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Journal articles on the topic 'Ammonium acetate ir'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

A. Bawa, Ramadan, and Amany H. Elgroshi. "Preparation and Antifungal Study of Some Ammonium Salts Derived from Acetic Acid and Trichloroacetic Acid." مجلة العلوم الاساسية و التطبيقية, no. 15 (June 16, 2025): 25–30. https://doi.org/10.36602/jsba.2023.15.17.

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This work is concerned with the preparation of a number of organic ammonium acetate and trichloroacetate salts (ionic liquids; ILs) throughout a reaction of the acetic acid and trichloroacetic acid with some aliphatic and aromatic amines including the ammonia. Ten organic ammonium carboxylate salts were obtained, some of them were in the form of solid salts, whereas others were as liquids (ionic liquids; ILs) at room temperature. The yields of the resulting organic salts ranged from (21%) to (79%). However, some attempts towards the preparation of other organic salts were not successful. The o

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2

MONINA, A. P., K. V. APRYATINA, O. N. SMIRNOVA, and L. A. SMIRNOVA. "Biodegradable composite material based on the starch-g-vinyl acetate copolymer." Plasticheskie massy, no. 7-8 (October 26, 2022): 20–22. http://dx.doi.org/10.35164/0554-2901-2022-7-8-20-22.

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A native potato starch was modififi ed with vinyl acetate by graft polymerization in alkaline medium with pH 10 in the mode of temperature change from 70 to 80°C for 4 hours. The initiator of the process was ammonium persulfate (NH4)2S2O8. The conversion of vinyl acetate was 91,5%. The chemical structure of graft copolymer (Starch:Vinyl acetate) was confifi rmed by IR-spectroscopy. Composite materials of modififi ed starch and triethyl citrate with tensile strength of 24 MPa were obtained. Under natural environmental conditions, materials undergo biodegradation of 96% in 28 days.

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3

Nimbalkar, Seijas, Vazquez-Tato, and Nikalje. "Ultrasound-Assisted One Pot Synthesis of Novel 5-(1-(Substituted phenyl)-4,5-diphenyl-1H-imidazol-2-yl)-4-methylthiazole." Proceedings 9, no. 1 (2018): 63. http://dx.doi.org/10.3390/ecsoc-22-05795.

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This work reports synthesis of ten novel derivatives of 5-(1-(substituted phenyl)-4,5-diphenyl-1H-imidazol-2-yl)-4-methylthiazole 5(a–o). The reaction of benzil, primary aryl amines, 4-methylthiazole-5-carbaldehyde and ammonium acetate was carried out in one pot in the presence of eco-friendly catalyst Ceric ammonium nitrate in solvent ethanol to give final compounds. The structures of the synthesized compounds were confirmed by spectral characterization such as IR, 1H-NMR, 13C-NMR and mass spectral studies.

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4

Nosova, N. V., М. О. Starovoytova, R. R. Mahmudov, V. V. Novikova, М. V. Dmitriev, and V. L. Gein. "Synthesis and biological activity of substituted 5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxamides." Žurnal obŝej himii 94, no. 5 (2024): 559–68. http://dx.doi.org/10.31857/s0044460x24050032.

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A four-component solvent-free reaction of acetoacetic acid amide with dimedone, aromatic aldehydes and ammonium acetate leads to new substituted 5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxamides. The structures of the products were proved using IR, 1H and 13C NMR spectroscopy, mass spectrometry and X-ray diffraction analysis. The synthesized compounds were tested for antimicrobial and antinociceptive activities.

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5

Bhadrachar, Somashekara, Giriyapura R. Vijayakumar, Kittappa M. Mahadevan, and Thippeswamy Basavaraja. "Synthesis, Molecular Docking and Radical Scavenging Activity of 1,2,4,5-Tetrasubstituted Imidazole Derivatives." Asian Journal of Chemistry 31, no. 11 (2019): 2448–52. http://dx.doi.org/10.14233/ajchem.2019.22107.

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A series of 1,2,4,5-tetrasubstituted imidazoles (2a-g) were synthesized using 1,2-diketone, 1-naphthaldehyde, substituted aromatic amine and ammonium acetate in the presence of ceric ammonium nitrate as a catalyst. The synthesized compounds were characterized by FT-IR, 1H NMR, Mass spectra and explored for their antioxidant activity by DPPH free radical scavenging assay method. Among the synthesized compounds 2a, 2e and 2f exhibit good antioxidant activities. Molecular docking study was also been performed to know the possible interactions between the synthesized compound and antioxidant recep

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6

Hemmesi, Leila. "Preparation and Characterization of NiCoFe2O4 Nanoparticles as an Effective Catalyst for the Synthesis of Trisubstituted Imidazole Derivatives Under Solvent-free Conditions." Acta Chimica Slovenica 69, no. 4 (2022): 876–83. http://dx.doi.org/10.17344/acsi.2022.7633.

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In this study, NiCoFe2O4 nanoparticles were prepared and used as a reactive catalyst for the synthesis of trisubstituted imidazoles. The multicomponent reactions of aromatic aldehydes, benzil and ammonium acetate were carried out under solvent-free and conventional heating conditions. In this reaction, some imidazole derivatives with high purity, short reaction times and high yields were obtained. The prepared nanocatalyst was characterized by FT-IR, XRD, EDX, VSM and SEM techniques. Moreover, the organic products were identified by melting point, FT-IR and 1H NMR analyzes.

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7

Ehsanifar, Sepideh, and Masoud Mokhtary. "3-Carboxy-1-sulfopyridin-1-ium chloride ([CPySO3H]+Cl−): an efficient catalyst for one-pot synthesis of hexahydroquinoline-3-carboxamides." Heterocyclic Communications 24, no. 1 (2018): 27–29. http://dx.doi.org/10.1515/hc-2017-0211.

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Abstract 3-Carboxy-1-sulfopyridin-1-ium chloride ([CPySO3H]+Cl−) was synthesized and evaluated as a recoverable catalyst for one-pot synthesis of hexahydroquinoline-3-carboxamide derivatives by a four-component reaction of an arylaldehyde, dimedone, acetoacetanilide and ammonium acetate. The [CPySO3H]+Cl− catalyst was characterized by infrared (IR), 1H nuclear magnetic resonance (NMR), 13C NMR, elemental analysis and thermal gravimetric analysis (TGA).

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8

Fan, Rui, and Jin Shui Yao. "Synthesis and Characterization of Optically Active Poly(N-Acryloyl-L-alanine) in Ionic Lliquids." Advanced Materials Research 1035 (October 2014): 464–68. http://dx.doi.org/10.4028/www.scientific.net/amr.1035.464.

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The chiral monomer,N-acryloyl-L alanine, was synthesized by condensation reaction between acryloyl chloride and L-alanine using ethyl acetate and water as two-phase solvents, tetrabutyl ammonium bromide as phase transfer catalyst and ethyl acetate as the extraction solvent.And then, poly (N-acryloyl-L-alanine) was successfully prepared by free radical polymerization of above synthesized monomer using 2,2'-Azobis (2-methylpropionitrile) AIBN as initiator in ionic liquids. Their structures were characterized by1HNMR and IR. Optically activities were tested with Rotary Spectrometer. Melting point

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9

M., K. Gupta, K. Gupta A., Gupta Vandana, and C. Gupta K. "Synthesis of some new 2,4,6-trisubstituted phenyl pyrimidines using 4-nitro and 4-fluorophenacyldimethylsulfonium bromides with aromatic aldehydes." Journal of Indian Chemical Society Vol. 84, Mar 2007 (2007): 299–302. https://doi.org/10.5281/zenodo.5816595.

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Dnepartment of Applied Chemistry, Birla Institute of Engineering and Technology, Jhansi-284 001, Uttar Pradesh, India Department of Chemistry, D. V. (P.G.) College, Orai-285 001, Uttar Pradesh, India <em>Manuscript received 6 February 2006, revised 14 November 2006, accepted 2 February 2007</em> 4-Nitrophenacyldimethylsulfonium bromide and 4-fluorophenacyldimethylsulfonium bromide have been prepared by the reaction of dimethyl sulfide with 4-substitutedphenacyl bromide in benzene at reflux temperature under nitrogen atmosphere. These sulfonium salts on treatment with NaOH gave 4- itrophenacyli

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10

Miao, Jiao Jiao, Yong Qi Yu, and Li Ping Zhang. "A New Solvent for the Industrial Production of Cellulose Fibers: Quaternary Ammonium Acetate." Materials Science Forum 852 (April 2016): 1256–64. http://dx.doi.org/10.4028/www.scientific.net/msf.852.1256.

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Tetrabutylammonium acetate, a new solvent, can dissolve cellulose (8 wt%) within 5 min at 40°C with dimethyl sulfoxide as coslovent without any pretreatment or inert gas atmosphere. The dissolution detail was recorded by Confocal Laser Scanning Microscope. And the viscosity of cellulose solution prepared from the new solvent was only 10% of that prepared from [BMIM]Cl. Moreover, the influence of molecular weight on the rheology of the cellulose solution was investigated. With the increase of the molecular weight, the viscosity was increasing and the cross-over point of the storage modulus (G′)

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11

Karabasanagouda, T., Vasudeva Adhikari, and G. Parameshwarappa. "Synthesis of some biologically active 2,4'-bipyridine-5-carbonitriles carrying the 4-hydroxyphenylthio moiety." Journal of the Serbian Chemical Society 74, no. 7 (2009): 733–43. http://dx.doi.org/10.2298/jsc0907733k.

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A series of new 4-aryl-2'-[(4-hydroxyphenyl)thio]-6oxo-1,6-dihydro- 2,4'-bipyridine-5-carbonitriles (3a-k) and 6-amino-4aryl-2'-[(4-hydroxyphenyl) thio]-2,4'-bipyridine-5-carbonitriles (4a-h) were synthesized from 4-hydroxythiophenol (1). The reaction of 4-hydroxythiophenol with 4-acetyl-2-chloropyridine yielded 1-{2-[(4-hydroxyphenyl)thio]pyridin-4-yl}ethanone (2). Further treatment of 2 with ethyl cyanoacetate in the presence of ammonium acetate with various aromatic aldehydes furnished the compounds 3a-k. On the other hand, condensation of 2 with aromatic aldehydes in the presence of alcoho

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12

Qu, Yuanzhi, Ren Wang, Shifeng Gao, et al. "Study on the Shale Hydration Inhibition Performance of Triethylammonium Acetate." Minerals 12, no. 5 (2022): 620. http://dx.doi.org/10.3390/min12050620.

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Shale inhibitor is an additive for drilling fluids that can be used to inhibit shale hydration expansion and dispersion, and prevent wellbore collapse. Small molecular quaternary ammonium salt can enter the interlayer of clay crystal, and enables an excellent shale inhibition performance. In this paper, a novel ionic shale inhibitor, triethylammonium acetate (TEYA), was obtained by solvent-free synthesis by using acetic acid and triethylamine as raw materials. The final product was identified as the target product by Fourier transform infrared spectroscopy (FT-IR). The inhibition performance o

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13

Chinta, Bhargavi, T. N. V. S. S. Satyadev, and G. V. Adilakshmi. "Zn(OAc)2•2H2O-catalyzed one-pot synthesis of divergently substituted Imidazoles." Current Chemistry Letters 12, no. 1 (2023): 175–84. http://dx.doi.org/10.5267/j.ccl.2022.8.007.

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Wide range of 2,4,5-trisubstituted imidazoles were synthesized using eco-friendly, readily available, inexpensive Zn(OAc)2•2H2O (5 mol%) under solvent-free conditions in moderate to excellent yields by condensation from aldehyde, ammonium acetate and benzil at 70 0C. The optimized reaction parameters were successfully applied for the synthesis of divergent 1,2,4,5-tetrasubstitued imidazoles using aromatic amine as fourth component. All the imidazole derivatives were sufficiently characterized by IR, NMR and Mass spectral analyses.

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14

Pandey, Himanshu, and S. P. Shrivastava. "One Pot Synthesis, Characterization of Benzothiazole/ Benzimidazole Tethered Imidazole Derivatives using Clay as Catalyst." Oriental Journal Of Chemistry 37, no. 3 (2021): 583–88. http://dx.doi.org/10.13005/ojc/370309.

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A Green approach for benzothiazole / benzimidazole tethered imidazole derivative synthesis utilizing brick derived clay as a catalyst. Brick clay catalyst used in this synthesis has shown excellent catalytic activity by increasing efficiency, reducing the reaction time and most importantly it is reusable for further reaction runs. These derivatives were synthesized by four component condensation reaction that involvebenzil, aldehyde, 2-aminobenzimidazole / 2-amino-6-nitrobenzothiazole and ammonium acetate. The clay catalyst is characterized by FT-IR while the synthesized derivatives were chara

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15

Cui, Jingmin, Xia Ji, Yingqi Mi, et al. "Antimicrobial and Antioxidant Activities of N-2-Hydroxypropyltrimethyl Ammonium Chitosan Derivatives Bearing Amino Acid Schiff Bases." Marine Drugs 20, no. 2 (2022): 86. http://dx.doi.org/10.3390/md20020086.

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N-2-hydroxypropyltrimethyl ammonium chloride chitosan (HACC), a cationic quaternary ammonium salt polymer exhibiting good solubility in water, is widely used because of its low toxicity and good biocompatibility. Herein, through ion exchange reaction, we prepared N-2-hydroxypropyltrimethyl ammonium chitosan derivatives bearing amino acid Schiff bases with good biological activities. The accuracy of the structures was verified by FT-IR and 1H NMR. The antibacterial activity, antifungal activity, and scavenging ability of DPPH radical and superoxide radical of HACC derivatives were significantly

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16

Bhadani, Vijay N., Piyush A. Patel, Heta D. Purohit, and Dipak M. Purohit. "Synthesis and Antimicrobial Screening 6-Aryl-2-(Amino/Methoxy)-4-[(4′-Difluoro Methoxy) (3′-Hydroxy) Phenyl] Nicotinonitrile." International Letters of Chemistry, Physics and Astronomy 50 (May 2015): 35–42. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.50.35.

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A series of an easy and efficient route for the synthesis of some new 2-amino-3-cyanopyridine (4a-4i) and 2-methoxy-3-cyanopyridine (5a-5i) derivatives were synthesized through the reaction of various chalcone (3a-3i) with malononitrile in presence of ammonium acetate and sodium methoxide, respectively. The constitutions of the all synthesized compounds have been established by the IR, 1H-NMR, Mass spectral data and Elemental analysis. Furthermore, all the synthesized products were screened for their antimicrobial activity.

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17

Bhadani, Vijay N., Piyush A. Patel, Heta D. Purohit, and Dipak M. Purohit. "Synthesis and Antimicrobial Screening 6-Aryl-2-(Amino/Methoxy)-4-[(4′-Difluoro Methoxy) (3′-Hydroxy) Phenyl] Nicotinonitrile." International Letters of Chemistry, Physics and Astronomy 50 (May 3, 2015): 35–42. http://dx.doi.org/10.56431/p-ft6gk2.

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A series of an easy and efficient route for the synthesis of some new 2-amino-3-cyanopyridine (4a-4i) and 2-methoxy-3-cyanopyridine (5a-5i) derivatives were synthesized through the reaction of various chalcone (3a-3i) with malononitrile in presence of ammonium acetate and sodium methoxide, respectively. The constitutions of the all synthesized compounds have been established by the IR, 1H-NMR, Mass spectral data and Elemental analysis. Furthermore, all the synthesized products were screened for their antimicrobial activity.

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18

Pandey, Himanshu, Kaushal Kumar, Neha Mishra, Ritu Yadav, and S. P. Shrivastava. "Sonochemical Synthesis, Characterization and Molecular Docking of Thiazole and Triazole Tethered Tetra-Substituted Imidazoles." Oriental Journal Of Chemistry 38, no. 6 (2022): 1445–52. http://dx.doi.org/10.13005/ojc/380616.

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Sonochemical synthesis of tetra-substituted imidazole derivatives tethered with thiazole and triazole moieties carried out by condensation reaction, involving aldehyde, benzil, ammonium acetate and selected amino azole moiety with brick clay as catalyst. The synthesized tetra-substituted imidazole derivatives were characterized using FT-IR, NMR spectroscopy. Molecular docking studies of the synthesized tetra-substituted imidazole derivatives for their antimicrobial potency were also performed. These derivatives scored satisfactorily and can be the possible lead for the future drug candidate ag

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19

Aute, Dilip, Amol Parhad, Vitthal Vikhe, Bhagwat Uphad, and Anil Gadhave. "Aluminized polyborate catalyzed efficient solvent-free synthesis of 1,8-dioxo-decahydroacridines via hantzsch condensation." Current Chemistry Letters 13, no. 2 (2024): 417–24. http://dx.doi.org/10.5267/j.ccl.2023.10.004.

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In this work we report, aluminized polyborate catalyzed facile and efficient one-pot four component Hantzsch synthesis of 1,8-dioxo-decahydroacridines using substituted aromatic aldehydes (1 mmol), dimedone (2 mmol) and ammonium acetate (1.5 mmol) at 95-100oC under solvent-free condition. The prominent advantages of this methodology are good product yields (85-95%), eco-friendliness, mild reaction conditions and use of inexpensive catalyst. The structures of the targeted molecules were examined by FT-IR, 1H-NMR and mass spectral techniques.

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VlJAI, N. PATHAK, K. GOYAL MAHENDRA, JAIN MEENAKSHI, and C. JOSHI KRISHNA. "Synthesis of some New Fluorine containing Oxazoles, Oxadiazoles, Thiadiazoles and Triazines." Journal of Indian Chemical Society Vol.70, Jun 1993 (1993): 539–42. https://doi.org/10.5281/zenodo.5913958.

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Department of Chemistry, University of Rajasthan, Jaipur-300 004 <em>Manuscript received 31 March 1992, revised 16 October 1992, accepted 8 February 1993</em> Treatment of fluorine containing phenacyl bromides with urea or substituted arylureas afforded the corresponding 2-(amino/<em>N</em>-arylamino)-4-(fluoroaryl)oxazoles, and with ammonium acetate in glacial acetic acid yielded 2-methyl- 4-(fluoroaryl)oxazoles. Fluorinated arylglyoxals on refluxing with semicarbazide or thiosemicarbazide afforded arylglyoxalsemicarbazones/or thiosemicarbazones, cyclisation of these with potassium carbonate

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21

Nagalakshmi, G. "Synthesis and Pharmacological Evaluation of 2-(4-Halosubstituted phenyl)-4,5-diphenyl-1H-imidazoles." E-Journal of Chemistry 5, no. 3 (2008): 447–52. http://dx.doi.org/10.1155/2008/921256.

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In the present study, 2-(4-halosubstituted phenyl)-4,5-diphenyl-1Himidazoles have been synthesized by refluxing benzil and ammonium acetate with different 4-halosubstituted aromatic aldehydes in glacial acetic acid. The structural assignment of this compound has been made on the basis of elemental analysis, UV, IR,1H NMR and Mass spectral data. Toxicity of the compound has been determined. The synthesized compound was evaluated for antiinflammatory activity against carrageenan induced paw oedema and anticonvulsant activity against maximal electro-shock-induced convulsions in rats.

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22

Zhou, Pan, Biao Hu, Lingling Lu, Rong Huang, and Fuchao Yu. "One-Pot Synthesis of Functionalised 4-Spiro-1,4-Dihydropyridines Via [1+2+1+2]-Cyclisation." Journal of Chemical Research 41, no. 9 (2017): 513–16. http://dx.doi.org/10.3184/174751917x15027935057969.

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A simple and efficient approach for the synthesis of 4-spiro-1,4-DHP derivatives has been developed, involving one-pot three-component reaction of isatins, N,N-dimethylenaminones with ammonium acetate in EtOH–water solution promoted by acetic acid. Compared with the previous [1+2+3]-cyclisation method, this [1+2+1+2]-cyclisation procedure has advantages as it is more environmentally friendly, has easier operational simplicity, and requires milder reaction conditions. Moreover, these novel compounds have been obtained in moderate to good yields and their structures have been confirmed by 1H NMR

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23

Robertson, R. M., J. A. de Haseth, and R. F. Browner. "MAGIC-LC/FT-IR Spectrometry with Buffered Solvent Systems." Applied Spectroscopy 44, no. 1 (1990): 8–13. http://dx.doi.org/10.1366/0003702904085886.

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The first demonstration of identifiable infrared (IR) spectra obtained from buffered (volatile and nonvolatile buffers) mobile phases using the Monodisperse Aerosol Generator Interface for Combining Liquid Chromatography with Fourier Transform Infrared (MAGIC-LC/FT-IR) spectrometry is described. Ammonium acetate, a volatile buffer, was used to buffer an 80:20 acetonitrile: water mobile phase to pH 5.0. Caffeine was deposited from this buffered mobile phase, and the spectrum was used as a reference to compare with caffeine spectra obtained from nonvolatile buffered mobile phases. The two nonvol

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Ghasemzadeh, Mohammad A., Mohammad H. Abdollahi-Basir, and Zahra Elyasi. "Synthesis of some Novel Imidazoles Catalyzed by Co3O4 Nanoparticles and Evaluation of their Antibacterial Activities." Combinatorial Chemistry & High Throughput Screening 21, no. 4 (2018): 271–80. http://dx.doi.org/10.2174/1386207321666180330164942.

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Aim and Objective: The multi-component condensation of benzil, primary amines, ammonium acetate and various aldehydes was efficiently catalyzed using cobalt oxide nanoparticles under ultrasonic irradiation. This approach describes an effective and facile method for the synthesis of some novel 1,2,4,5-tetrasubstituted imidazole derivatives with several advantages such as high yields and short reaction times and reusability of the catalyst. Moreover, the prepared heterocyclic compounds showed high antibacterial activity against some pathogenic strains. Materials and Method: The facile and effici

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Khurram, Shahzad, Abbas Faheem, Pandey Digvijay, Ajmal Sanila, Khadim Mudassar, and Usman Tahir Muhammad. "Synthesis, characterization and biological evaluation of novel tetrasubsituted Imidazole compounds." Journal of PeerScientist 3, no. 1 (2020): e1000019. https://doi.org/10.5281/zenodo.3901332.

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New classes of tetrasubsituted imidazole based compounds were synthesized using multicomponent one pot synthesis scheme through cyclocondensation reaction of benzil, aromatic primary amines, aldehydes and ammonium acetate in glacial acetic acid. The synthesized compounds have been analyzed and characterized by melting point, color, conductivity method, CHN analysis, FT-IR and UV-Visible. The reaction proceeding was examined by TLC after regular intervals of period. To test biological activity, the synthesized compounds have been examined against various bacterial strains. From the analysis of

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Hitesh, B. Vala, Upadhayay Jatin, and Rajyaguru Cheatana. "Synthesis, Characterization and Antimicrobial Activity of Some New Dihydropyridine Derivatives." Pharmaceutical and Chemical Journal 7, no. 6 (2020): 1–5. https://doi.org/10.5281/zenodo.13956338.

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Synthesis  of 4-(3-(aryl)–1–phenyl-1<em>H</em>–pyrazol–4–yl)-3,5–dimethyl-1,4,7,8–tetrahydro dipyrazolo [3,4-b:4',3'-e] pyridine by the reaction of different substituted 3-(aryl)–1-phenyl-1<em>H</em>-pyrazole-4-carbaldehyde with 2 mole of 3-methyl-1<em>H</em>-pyrazol-5(4<em>H</em>)-one in presence of ammonium acetate and methanol as a solvent. The constitution of all the synthesized compounds has been characterized by using IR, MASS,<sup> 1</sup>H<sup> </sup>NMR spectroscopy. All synthesized compounds were screened for their antimicrobial ac

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Başkan, M. Halim, Murat Aydın, Dilek Çanakçı, and Şemsettin Osmanoğlu. "Electron paramagnetic resonance and FT-IR spectroscopic studies of DL-2-aminoadipic acid and ammonium acetate powders." Radiation Effects and Defects in Solids 169, no. 3 (2013): 256–64. http://dx.doi.org/10.1080/10420150.2013.860977.

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Mao, Cui Ping, and Shu Bin Wu. "Adsorption of Polyvinyl Acetate (PVAc) Adhesive Emulsion from Aqueous Solution by Lignin-Phenol Based Cationic Surfactant Modified Organic Kieselguhr." Applied Mechanics and Materials 472 (January 2014): 861–66. http://dx.doi.org/10.4028/www.scientific.net/amm.472.861.

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The kieselguhr was modified by the lignin-based cationic surfactant which obtained from the Mannich reaction. Modified organic kieselguhr exhibited favorable adsorption to adhesive and fine colloidal substance. Dissolved and colloidal substances (DCS) appeared in the secondary fibre reuse process interfered the pulping and papermaking seriously. The organic clay could remove the stickies substances through adsorption approach technically. In this paper, PVAc was chosen as the simulacrum of stickies because of its wide application as the adhesives in wood, textile, paint, paper processing and o

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Bagwan, S. M., S. M. Patil, and Mohamad Asif. "PREPARATION OF 2,4,5-TRIARYLIMIDAZOLE DERIVATIVES USING GREEN Syzygium Cumini SEED CATALYST." RASAYAN Journal of Chemistry 15, no. 03 (2022): 1861–66. http://dx.doi.org/10.31788/rjc.2022.1537016.

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A simple, efficient, one-pot, and green synthesis of 2, 4, 5-triaryl imidazole was carried by three constituent reactions of benzil, ammonium acetate, and substituted aromatic aldehyde by using Syzygium cumini seed extract as a catalyst under reflux. The aqueous extract of Syzygium cumini seed as a biocatalyst is associated with high to excellent yield, green synthetic roughness, low reaction time, and eco-friendly operation. The catalyst contains different phytochemical contents, which are detrimental to improving the acidity of aqueous extract. The seed extract is nonhazardous, non-inflammab

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Ilavarasan, L., A. Ravi, M. Ganapathi, et al. "A Convenient Method of Synthesis of 3-(4, 5-diphenyl-1H imidazole2-yl) From Benzil in Absence of Catalyst." South Asian Journal of Engineering and Technology 7, no. 3 (2018): 20–27. http://dx.doi.org/10.26524/sa3.

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In this study new imidazoles derivatives were synthesized.The first stage involved preparation of 3-(4,5-diphenyl-1Himidazole-2-yl)phenol(AA1)by reacting Benzil with Substituted benzaldehyde in presence of sodium cyanide catalyst .The second stage involved the synthesis of Synthesis of 3-(4, 5 - diphenyl-1H imidazole-2-yl) sulfonamide(AA2) using TEA in glacial acetic acid. Finally the compound were synthesized using the three component system (Compound AA2), Substituted benzaldehyde and ammonium acetate. The structure of all compounds were confirmed by elemental analysis ,NMR and IR data and b

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Alipour, Mandana, Zinatossadat Hossaini, Samad Khaksar, and Faramarz Rostami-Charati. "3,5-Bis(trifluoromethyl) Phenylammonium triflate(BFPAT) as a Novel Organocatalyst for the Efficient Synthesis of 2,3-dihydroquinazolin-4(1H)-one Derivatives." Current Organic Synthesis 17, no. 1 (2020): 40–45. http://dx.doi.org/10.2174/1570179417666191218115126.

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Aim and Objective: A one-pot synthesis of 2,3-dihydroquinazolin-4(1H)-one derivatives by threecomponent cyclo-condensation of isatoic anhydride, aldehydes and amine or ammonium acetate has been developed using 3,5-Bis(trifluoromethyl) phenylammonium triflate (BFPAT) as a new organocatalyst. Material and method: All of the obtained products are known compounds and identified by IR, 1HNMR, 13CNMR and melting points. Results: A wide variety of structurally different aldehydes reacted easily and rapidly to result in the relating 2,3-dihydroquinazolin-4(1H)-ones in good to excellent yield. Conclusi

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Tope, Dipak R., Shilpa L. Sangle, Yogita R. Shelke, and Ashok V. Borhade. "One Pot Efficient Synthesis of Adridinedione derivatives using Flyash-ZrO2 Catalyst under solvent free condition." Research Journal of Chemistry and Environment 27, no. 7 (2023): 106–12. http://dx.doi.org/10.25303/2707rjce1060112.

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An efficient one pot green methodology for the synthesis of acridinedione derivatives has been achieved by multicomponent condensation of dimedone, substituted aromatic aldehydes and ammonium acetate in the presence of Flyash-ZrO2 catalyst under solvent free condition. It is clean, eco-friendly, high-yield efficiency procedure with simple work-up, and easy purification method. The synthesized acridinedione derivatives are characterized using spectroscopic analyses like FTIR, 1H NMR, 13C NMR, and mass spectrometry techniques. The synthesized catalyst was characterized using IR, SEM, TEM, BET an

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Patil, Ravindra M., and Deepak V. Nagarale. "One-pot multicomponent synthesis of 2-amino-5,6,7,8-tetrahydro-4-phenylquinoline-3-Carbonitrile Derivatives." International Journal of Research 10, no. 5 (2023): 261–69. https://doi.org/10.5281/zenodo.8025979.

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<em>We report simple, efficient and one pot multicomponent protocol for the synthesis of the highly substituted 2-amino-5,6,7,8-tetrahydro-4-phenylquinoline-3-carbonitrile derivatives via the reaction of various aromatic aldehydes, malanonitrile, cyclic ketones and ammonium acetate in the presence of catalytic amount of cellulose based cerium (</em><em>IV</em><em>) as reusable catalyst at room temperature. For this transformation we used ethanol as green solvent and considering green chemistry approach.</em><em> The synthesized compounds were characterized by FT- IR technique. The ad

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Atlaskina, Maria E., Artem A. Atlaskin, Olga V. Kazarina, et al. "Synthesis and Comprehensive Study of Quaternary-Ammonium-Based Sorbents for Natural Gas Sweetening." Environments 8, no. 12 (2021): 134. http://dx.doi.org/10.3390/environments8120134.

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The present study provides a solvent-free organic synthesis of quaternary ammonium salts: bis(2-hydroxyethyl)dimethylammonium taurate ([BHEDMA][Tau]) and bis(2-hydroxyethyl)dimethylammonium acetate ([BHEDMA][OAc]). These ionic compounds are promising materials for carbon dioxide capture processes, as mono sorbents, supplemental components in the conventional process of chemical absorption, and in the combined membrane approach for improving sorption efficiency. The synthesized compounds were characterized by 1H NMR and FT-IR spectroscopies and elemental analysis. Afterward, the sorption proper

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Bogdanoviciene, Irma, Kaia Tőnsuaadu, Valdek Mikli, Inga Grigoraviciute-Puroniene, Aldona Beganskiene, and Aivaras Kareiva. "pH impact on the sol-gel preparation of calcium hydroxyapatite, Ca10(PO4)6(OH)2, using a novel complexing agent, DCTA." Open Chemistry 8, no. 6 (2010): 1323–30. http://dx.doi.org/10.2478/s11532-010-0113-0.

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AbstractAqueous sol-gel chemistry routes — based on ammonium hydrogen phosphate as the phosphorus precursor, calcium acetate monohydrate as the source of calcium ions, and 1,2-diaminocyclohexanetetraacetic acid monohydrate (DCTA) as the complexing agent — have been used to prepare calcium hydroxyapatite (HA). The sol-gel process was performed in aqueous solution at different pH values followed by calcination of the dry precursor gels for 5 h at 1000°C. Phase transformations, composition, and structural changes in the polycrystalline samples were studied by thermoanalytical methods (TG/DTA), in

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A., S. Aswar, and A. Ladole C. "Preparation and characterization of doped Sr.2Co.8Fe12O19 hexaferrite: An efficient heterogeneous catalyst for one pot synthesis of 1,4-dyhydropyridine derivatives." Journal of India Chemical Society Vol. 95, Dec 2018 (2018): 1525–30. https://doi.org/10.5281/zenodo.5644653.

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Department of Chemistry, Sant Gadge Baba Amravati University, Amravati-444 602, Maharashtra, India <em>E-mail</em>: aswaranand@gmail.com <em>Manuscript received online 01 November 2018, accepted 19 November 2018</em> A clean and efficient method has been developed for the synthesis of 1,4-dihydropyridine derivatives using aromatic aldehyde, ethyl acetoacetate, and ammonium acetate using cobalt doped strontium hexaferrite under microwave irradiation conditions. This process offers an easy and efficient synthesis of 1,4-dihydropyridine derivatives with high yields. The advantages of this protoco

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37

Gümüş, M. K., S. Kansız, G. B. Tulemisova, and N. Dege. "SYNTHESIS, CRYSTAL STRUCTURE, AND HIRSHFELD SURFACE ANALYSIS OF 4,4A,5,6,7,8-HEXAHYDRO-4A-METHYL-2,5,7-TRIPHENYL-2H-PYRIDO[4,3-D][1,3]OXAZINE." Журнал структурной химии 66, no. 2 (2025): 139916. http://dx.doi.org/10.26902/jsc_id139916.

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The synthesis of the 2,6-diphenyldpiperidin-4-one derivative of the title compound, 4,4a,5,6,7,8-hexahydro-4a-methyl-2,5,7-triphenyl-2H-pyrido[4,3-d][1,3]oxazine (HMTPO), was developed using the reaction of 4-hydroxy-3-methyl-2-butanone, benzaldehyde, and ammonium acetate in ethanol as a solvent. The molecular structure of HMTPO was determined by single-crystal X-ray diffraction. The chemical structure was confirmed by employing IR, 1H NMR, 13C NMR, and mass spectral data. To gain deeper insight into the bonding interactions within the compound, Hirshfeld surface analysis and two-dimensional f

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Ramanathan, N.*1 Nivetha B.2 Praveen Kumar K. C.3 Raghul Gandhi P.4 Ragul E.5 RajKumar N.6. "Synthesis, Characterisation, Biological Evaluation and Analogizing the Antimycotic Activity of 2,4,5-Triphenylimidazole Derivatives." International Journal of Pharmaceutical Sciences 3, no. 3 (2025): 324–32. https://doi.org/10.5281/zenodo.14986869.

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Microwave Assisted Synthesis (MWAS) technique which significantly lowers the chemical waste and reaction time. MWAS has been utilized to synthesize the 2,4,5-Triphenylimidazole by Debus-Radziszewski imidazole synthesis. From the literature survey, 2,4,5-Triphenylimidazole derivatives were synthesized under MWAS using Benzil, Ammonium Acetate and Aldehydes like Benzaldehyde, 4-chlorobenzaldehyde,                               4-Nitrobenzaldehyde a

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Paennarin, H., and S. L. Seet. "Structural Analysis of Strontium-Substituted Hydroxyapatites." Advanced Materials Research 506 (April 2012): 210–13. http://dx.doi.org/10.4028/www.scientific.net/amr.506.210.

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In this work, the effects of pH on the formation of hydroxyapatite (HA) and Sr-substituted HA (Sr-HA) were studied. Calcium nitrate tetrahydrate and strontium acetate were dissolved in ethanol at the Ca:Sr mole ratio of 9.5:0.5. Diammonium hydrogen phosphate was dissolved in deionized water. The two solutions were mixed thoroughly and the ammonium solution was added in order to adjust the pH of the solution. After precipitation, the system was subjected to the heat until the dried powder was obtained and then calcined at 600°C for 2 h. From XRD study, HA was found as the main phase in all calc

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MF, Afify, Abd El-Ghaffar MA, and Youssef EAM. "High performance metal stearates thermal stabilizers for poly vinyl chloride." International Journal of Petrochemical Science & Engineering 4, no. 4 (2019): 162–68. http://dx.doi.org/10.15406/ipcse.2019.04.00116.

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Low thermal stability of poly vinyl chloride (PVC) is one of the most serious problems that facing its processing. In the present study some single and mixed metal stearate soaps were prepared, characterized and evaluated for their performance in enhancing and imparts the thermal stability of PVC. Accordingly, calcium stearate, barium stearate, zinc stearate and also the mixed metal stearate salt of calcium, zinc and barium were prepared by the double decomposition of sodium stearate and single or mixed metal acetate solutions. The prepared metal stearates were characterized via spectroscopic

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Ghodsi, Mohammadi Ziarani. "Green method for the synthesis of indeno[1,2-b]pyridines using Fe3O4@SiO2@Pr-SO3H as nanomagnetic catalyst." Iranian Journal of Catalysis 10, no. 1 (2020): 65–70. https://doi.org/10.5281/zenodo.3971586.

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The acidic agent (SO<sub>3</sub>H) was stabilized on the silica coated Fe<sub>3</sub>O<sub>4</sub> magnetic nanoparticles to produce Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>@Pr-SO<sub>3</sub>H, as a heterogeneous acidic catalyst, was designed, and then fully studied and characterized by FT-IR, XRD, TGA, DTA, TEM, and SEM analysis. Subsequently, the catalytic activity of Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>@PrSO<sub>3</sub>H was investigated by the one-pot four- component condensation reaction between 1,3-indandione, aromatic aldehydes, acetophenone or propiophenone and ammonium

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Baghel, Madhuri, Meenakshi Bharkatiya, Falguni Tandel, and Sadhana J. Rajput. "Isolation and Characterization of Novel Degradation Product of Pidotimod." Asian Journal of Chemistry 34, no. 9 (2022): 2386–92. http://dx.doi.org/10.14233/ajchem.2022.23878.

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A synthetic dipeptide, pidotimod (3-L-pyroglutamyl-L-thiaziolidine-4-carboxylic acid, PTD) is an immunomodulator and it possesses anti-infective activity against variety of infections. The objective of this study was to explore into and identify pidotimod’s major degradation product. Pidotimod was degraded in ICH prescribed stress conditions. pidotimod was degraded 90% in 1.0 N NaOH at 80 ºC for 6 h and the degradation product (DP2) was determined using HPLC. The HPLC method was used to separate the primary and subsidiary degradation products and carried out on a C18 column with a mobile phase

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Dutta, Satyajit. "Synthesis and anthelmintic activity of some novel 2-substituted-4,5-diphenyl imidazoles." Acta Pharmaceutica 60, no. 2 (2010): 229–35. http://dx.doi.org/10.2478/v10007-010-0011-1.

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Synthesis and anthelmintic activity of some novel 2-substituted-4,5-diphenyl imidazolesA series of 2-substituted-4,5-diphenyl imidazoles1a-jwere synthesized by refluxing benzil with different substituted aldehydes in the presence of ammonium acetate and glacial acetic acid. Structures of the synthesized compounds were confirmed on the basis of IR,1H NMR and mass spectral data. Compounds1a-jwere screened for anthelmintic activity. Test results revealed that compounds showed paralysis time of 0.24 to 1.54 min and death time of 0.39 to 4.40 min while the standard drugs albendazole and piperazine

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Wang, Xue Chuan, Xiao Li Hao, and Tao Tao Qiang. "Preparation and Sizing Performance of the Modified Collagen Surface Sizing Agent." Applied Mechanics and Materials 271-272 (December 2012): 367–71. http://dx.doi.org/10.4028/www.scientific.net/amm.271-272.367.

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Using collagen as the raw material, methyl acrylate and vinyl acetate as the soft and hard monomers, ammonium persulfate as the initiator, a surface sizing agent was prepared by the emulsion polymerization method to modified the collagen. The optimum prepared conditions were got by the single factor experiment, follow as m(soft monomer)/m(hard monomer) for 1:2 or 1:1, m(collagen)/m(monomer) for 1:2, the dosage of initiator for 0.8% of monomers amount, the reaction time for 2h. The FT-IR showed that the grafting reaction between vinyl monomers and collagen happened and the vinyl monomers reacte

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45

Kapil, Bohra, Sharma Deepti, Kumar Banty, E. Olsen Carl, S. Parmar Virinder, and K. Prasad Ashok. "Multi-component one-pot synthesis of novel coumarinyldihydropyridines under solvent free conditions†." Journal of Indian Chemical Society Vol. 90, Oct 2013 (2013): 1885–91. https://doi.org/10.5281/zenodo.5792091.

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Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110 007, India <em>E-mail</em> : ashokenzyme@yahoo.com University of Copenhagen, Faculty of Life Sciences, Department of Natural Sciences, DK-1871 Frederiksberg C, Denmark <em>Manuscript received 18 July 2013, accepted 20 July 2013</em> A library of fourteen 4-coumarinyl-1,4-dihydropyridines (coumarinyl-1,4-DHP) has been synthesized under modified Hantzsch 1,4-dihydropyridine synthesis condition by the condensation of 4-formylcoumarin, alkyl acetoacetate and ammonium acetate in the presence of Ba(NO<sub>3</sub>)<sub>2</

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46

Wu, Yan Bo, Cheng Fei Lv, and Mei Na Han. "Synthesis and Performance Study of Polybasic Starch Graft Copolymerization Function Materials." Advanced Materials Research 79-82 (August 2009): 43–46. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.43.

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The graft copolymerization of mixed grafting monomers vinyl acetate and butyl acrylate onto grafting skeleton of corn starch have been investigated using ammonium persulfate as initiator. Starch based wood adhesive prepared by in emulsion synthesis have green material, superior property, low cost. The effects of various factors on the graft copolymerization were studied such as reaction time, reaction temperature, initiator concentration as well as match of mixed monomers. By single-factor tests, the optimum graft copolymerization conditions with higher grafting efficiency and grafting percent

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Achagar, Redouane, Abdelhakim Elmakssoudi, Abderrahmane Thoume, et al. "Nanostructured Na2CaP2O7: A New and Efficient Catalyst for One-Pot Synthesis of 2-Amino-3-Cyanopyridine Derivatives and Evaluation of Their Antibacterial Activity." Applied Sciences 12, no. 11 (2022): 5487. http://dx.doi.org/10.3390/app12115487.

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A facile and novel synthesis of thirteen 2-amino-3-cyanopyridine derivatives 5(a–m) by a one-pot multicomponent reactions (MCRs) is described for the first time, starting from aromatic aldehydes, malononitrile, methyl ketones, or cyclohexanone and ammonium acetate in the presence of the nanostructured diphosphate Na2CaP2O7 (DIPH) at 80 °C under solvent-free conditions. These compounds were brought into existence in a short period with good to outstanding yields (84–94%). The diphosphate Na2CaP2O7 was synthesized and characterized by different techniques (FT-IR, XRD, SEM, and TEM) and used as a

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Abbasov, Vagif, Nargiz Orujova, Ayaz Mammadov, et al. "The synthesis, antimicrobial activity and theoretical calculations of 4-(4,5-diphenyl-1-(4-(phenyldiazenyl)phenyl)-1H-imidazol-2-yl)-N,N-dimethylaniline." News of Pharmacy 108, no. 2 (2024): 18–24. http://dx.doi.org/10.24959/nphj.24.147.

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Aim. To synthesize 4-(4,5-diphenyl-1-(4-(phenyldiazenyl)phenyl)-1H-imidazol-2-yl)-N,N-dimethylaniline, as well as make theoretical calculations of its structure and study its antimicrobial properties. Materials and methods. The synthesis procedures were performed in the presence of ionic liquid catalysts and under microwave conditions. The catalysts included 1-butyl-3-methylimidazolehydrosulfate, N-methylpyrrolidone perchlorate, and 1,4-dimethylpiperazinedihydrosulfate ionic liquids. Benzyl, ammonium acetate, p-aminoazobenzene and 4-(dimethylamino)benzaldehyde were taken as reagents. Ethanol w

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Rucins, Martins, Martins Kaukulis, Aiva Plotniece, Karlis Pajuste, Nadiia Pikun, and Arkadij Sobolev. "1,1′-{[3,5-Bis(dodecyloxycarbonyl)-4-(naphthalen-2-yl)-1,4-dihydropyridine-2,6-diyl]bis(methylene)}bis{4-[(E)-2-(naphthalen-2-yl)vinyl]pyridin-1-ium}dibromide." Molbank 2022, no. 3 (2022): M1396. http://dx.doi.org/10.3390/m1396.

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Synthesis of a double-charged cationic amphiphilic 1,4-dihydropyridine derivative with dodecyl ester groups at positions 3 and 5 of the 1,4-DHP ring was performed starting from Hantzsch type cyclization of dodecyl acetoacetate, 2-naphthaldehyde and ammonium acetate. Bromination of this compound followed by nucleophilic substitution of bromine with (E)-4-(2-(naphthalen-2-yl)vinyl)pyridine gave the desired cationic amphiphilic 1,1′-{[3,5-bis(dodecyloxycarbonyl)-4-(naphthalen-2-yl)-1,4-dihydropyridine-2,6-diyl]bis(methylene)}bis{4-[(E)-2-(naphthalen-2-yl)vinyl]pyridin-1-ium}dibromide. The obtaine

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50

Ramírez, Hegira, Katiuska Charris, Esteban Fernandez-Moreira, et al. "One-Pot Multicomponent Synthesis of Methoxybenzo[h]quinoline-3-carbonitrile Derivatives; Anti-Chagas, X-ray, and In Silico ADME/Tox Profiling Studies." Molecules 26, no. 22 (2021): 6977. http://dx.doi.org/10.3390/molecules26226977.

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Several methoxybenzo[h]quinoline-3-carbonitrile analogs were designed and synthesized in a repositioning approach to developing compounds with anti-prostate cancer and anti-Chagas disease properties. The compounds were synthesized through a sequential multicomponent reaction of aromatic aldehydes, malononitrile, and 1-tetralone in the presence of ammonium acetate and acetic acid (catalytic). The effect of the one-pot method on the generation of the target product has been studied. The compounds were in vitro screened against bloodstream trypomastigotes of T. cruzi (NINOA and INC-5 strains) and

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