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Journal articles on the topic 'Treatment of acetylacetone'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Abdallah, H., M. S. Shalaby, and A. M. H. Shaban. "Performance and Characterization for Blend Membrane of PES with Manganese(III) Acetylacetonate as Metalorganic Nanoparticles." International Journal of Chemical Engineering 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/896486.

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This study describes the preparation, characterization, and evaluation of performance of blend Polyethersulfone (PES) with manganese(III) acetylacetonate Mn(acac)3to produce reverse osmosis blend membrane. The manganese(III) acetylacetonate nanoparticles were prepared by a simple and environmentally benign route based on hydrolysis of KMnO4followed by reaction with acetylacetone in rapid stirring rate. The prepared nanoparticle powder was dissolved in polymer solution mixture to produce RO PES/Mn(acac)3blend membrane, without any treatment of Polyethersulfone membrane surface. The membrane mor

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2

Wang, Zhao, Wu, and Duan. "Preparation of Micro-Patterned CaMn7O12 Ceramic Films via a Photosensitive Sol-Gel Method." Coatings 9, no. 10 (2019): 650. http://dx.doi.org/10.3390/coatings9100650.

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Mn/acetylacetone chelate was synthesized using Mn(CH3COO)2·4H2O as raw material, methanol as the solvent, and acetylacetone as the chelating agent. The ultraviolet (UV)-absorption peak of the synthesized chelate was found around 298 nm. CaMn7O12 sol was subsequently prepared using the Mn/AcAc chelate as the Mn source and calcium nitrate as the calcium source. The UV test indicates that the CaMn7O12 sol has the UV-sensitive characteristics. Owing to its photo-sensitivity, micro-patterned CaMn7O12 ceramic film can be prepared without photoresist, only through dip-coating, drying, UV-irradiation,

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3

Wu, Bingdang, Guoyang Zhang, and Shujuan Zhang. "Fate and implication of acetylacetone in photochemical processes for water treatment." Water Research 101 (September 2016): 233–40. http://dx.doi.org/10.1016/j.watres.2016.05.083.

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4

HIMATKUMAR, V. PATEL, and S. FERNANDES P. "Synthesis and Biological Activities of some Substituted Pyrazolylmethylene- 1 ,2,4-triazoles, - 1 ,3,4-thiadiazoles and -1 ,3,4-oxadiazoles." Journal of Indian Chemical Society Vol. 67, May 1990 (1990): 401–3. https://doi.org/10.5281/zenodo.6163751.

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N. S. B Laboratory, Department of Chemistry, St Xavier's College, Bombay-400 001 <em>Manuscript received 19 May 1989, revised 28 December 1989, accepted 1 January 1990</em> 3,5-Dimethyl-1-(4-nitrophenyl)-1<em>H</em>-4-pyrazoleacetic acid hydrazide (2) on treatment with aldehydes give the <em>N</em>-benzylidene derivatives (3a -g). The hydrazide (2) reacts either with acetylacetone or with ethyl acetoacetate to give 1[3,5-dimethyl-1- (4-nitrophenyl)-1<em>H</em>-pyrazol-4-yl]acetyl-3-metbyl-1<em>H</em>-pyrazoles (6,7). Compound 2 on treatment with isothiocyanates give <em>N</em>-(3,5-di

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5

Shakeri, Amid, Hossein Abdizadeh, and Mohammad Reza Golobostanfard. "Effects of Calcination Parameters on the Microstructure and Morphology of PZT Nanoparticles Prepared by Modified Sol–Gel Method." Advanced Materials Research 576 (October 2012): 326–29. http://dx.doi.org/10.4028/www.scientific.net/amr.576.326.

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Lead zirconate titanate nanopowder Pb(Zr0.53Ti0.47)O3 (PZT) was prepared by modified sol-gel method with 1-propanol as solvent and acetylacetone as stabilizer. The microstructure and particle size measurements at different heat treatment conditions were characterized by field emission scanning electron microscopy and x-ray diffraction analysis. It was found that the PZT nanoparticles calcinated at 600 °C showed mean diameter of 75-125 nm with high crystallinity of perovskite-type structure.

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6

Wang, Jixi, Yangbiao Liu, Xiudi Xiao, et al. "An efficient post-treatment strategy with acetylacetone for low temperature CsPbI2Br solar cells." Solar Energy 216 (March 2021): 7–13. http://dx.doi.org/10.1016/j.solener.2020.12.066.

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7

Yang, Fei, Bo Sheng, Zhaohui Wang, et al. "Performance of UV/acetylacetone process for saline dye wastewater treatment: Kinetics and mechanism." Journal of Hazardous Materials 406 (March 2021): 124774. http://dx.doi.org/10.1016/j.jhazmat.2020.124774.

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8

Wang, Shengchao, Guiqiang Qi, Zhichen Zhang, et al. "cRGD-Conjugated GdIO Nanoclusters for the Theranostics of Pancreatic Cancer through the Combination of T1–T2 Dual-Modal MRI and DTX Delivery." Molecules 28, no. 16 (2023): 6134. http://dx.doi.org/10.3390/molecules28166134.

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Clinically, magnetic resonance imaging (MRI) often uses contrast agents (CAs) to improve image contrast, but single-signal MRI CAs are often susceptible to calcification, hemorrhage, and magnetic sensitivity. Herein, iron acetylacetone and gadolinium acetylacetone were used as raw materials to synthesize a T1–T2 dual-mode imaging gadolinium-doped iron oxide (GdIO) nanocluster. Moreover, to endow the nanoclusters with targeting properties and achieve antitumor effects, the cyclic Arg-Gly-Asp (cRGD) peptide and docetaxel (DTX) were attached to the nanocluster surface, and the efficacy of the dec

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9

Bedair, A. H., Abd El-Wahab, A. M. El-Agrody, F. M. Ali, A. H. Halawa, and G. M. El-Sherbiny. "Binary heterocyclic systems containing the ethylideneamino linkage: synthesis of some new heterocyclic compounds bearing the naphtho-[2,1-b]furan moiety." Journal of the Serbian Chemical Society 71, no. 5 (2006): 459–69. http://dx.doi.org/10.2298/jsc0605459b.

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Ethylidene hydrazine (4a,b) and thiazolidin-4-one (5) derivatives were synthesized by the reaction of ethylidenethiosemicarbazide derivative (3a) with ?-haloketone/ethyl bromoacetate, respectively. Hetrocyclization of ethylideneacetohydrazide derivative (7) with o-phenolic aldehydes gave the corresponding coumarin derivatives (8,9). The interaction of 7 with acetylacetone afforded the corresponding pyridine derivative (10). Treatment of the arylidene derivative 11b with malononitrile afforded the corresponding pyran derivative (12). The new products 3-12 were subjected to IR, 1H NMR and mass s

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10

Badr, M. ZA, A. A. Geies, M. S. Abbady, and A. A. Dahy. "New heterocycles from thienopyridocinnolines." Canadian Journal of Chemistry 76, no. 4 (1998): 469–76. http://dx.doi.org/10.1139/v98-048.

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3-Cyano-4-(p-tolyl)pyrido[3,2-c]cinnolin-2(1H) thione 3 was reacted with α -halo ketones, esters, or amides to give the intermediates, S-alkylated products 5b-h, respectively, which underwent intramolecular ring closure reactions with ethanolic sodium ethoxide to give thienopyridocinnolines 6a-h. Pyrimidothienopyridocinnolines 9 and 11 were obtained by treatment of oxazino compound 8 with hydrazine hydrate and ammonium acetate. Treatment of hydrazino derivative 13 with acetylacetone, triethylorthoformate, carbon disulphide, ethyl chloroformate, and acetic anhydride afforded triazolopyrimidothi

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11

Konno, Tsutomu, Mitsuru Tanikawa, Takashi Ishihara, and Hiroki Yamanaka. "Fluorine-Containing Allenylpalladium Complexes. Synthesis of Optically Active Fluoroalkylated Allenes and Furan Derivatives." Collection of Czechoslovak Chemical Communications 67, no. 10 (2002): 1421–35. http://dx.doi.org/10.1135/cccc20021421.

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The reaction of fluoroalkylated propargyl mesylates with various nucleophiles, such as zinc reagents and enolates derived from 1,3-dicarbonyl compounds, in the presence of a palladium catalyst was investigated in detail. Various zinc reagents participated in the coupling reaction to give the corresponding fluoroalkylated allenes in good yields. When chiral mesylates were employed, the corresponding optically active allenes were obtained without any loss of enantiomeric purity in the reaction. On the other hand, treatment of trifluoromethylated propargyl mesylate with stabilized carbanions deri

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12

Pandey, Ashutosh, Anjana Pandey, Peter Mayer та Wolfgang J. Parak. "Synthesis and Structural Characterisation of a Hexanuclear GdIII Compound Gd6(μ3-OH)6(acac)12·1.25 CHCl3 as a Potential Precursor for Gd2O3 Nanomaterials". Zeitschrift für Naturforschung B 64, № 3 (2009): 263–68. http://dx.doi.org/10.1515/znb-2009-0302.

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While aging the reaction mixture of gadolinium tri-isopropoxide with acetylacetone (pentane-2,4- dione, acacH) in a 1 : 2 molar ratio in toluene for crystalisation, crystals of Gd6(μ3-OH)6(acac)12・1.25 CHCl3 (1) were obtained in high yield. The crystal structure analysis reveals that 1 has a M6O12 core which is constituted of two distorted, tricapped, face-sharing cubane units (each with one missing edge) wherein the metal atoms are octacoordinated with a distorted square-antiprismatic geometry. In a sol-gel treatment the amorphous xerogel obtained from 1 was transformed into a nano-crystallin

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13

Radmehr, Roya, Mohammad Rafiee, and Ahmadreza Yazdanbakhsh. "Comparing the performance of UV/Acetylacetone and UV/O3 processes for treatment of olive mill wastewater." Environmental Health Engineering and Management 9, no. 2 (2022): 115–23. http://dx.doi.org/10.34172/ehem.2022.13.

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Background: Olive mill wastewater (OMW) is characterized by its high organic content and refractory compounds. The aim of this study was to evaluate and compare the efficiency of UV/O3 and UV/ acetylacetone (UV/AcAc) processes for treatment of pretreated OMW by coagulation/microfiltration (C&M) process. Methods: In this study, a laboratory-scale UV plug flow reactor with ancillary equipment was fabricated. The experimental factors including initial pH (5-9), O3 dosages (1.5-4.5 g/h), and AcAc concentrations (0.01-0.03 M) were measured. For both processes, a reaction time of 120 min was con

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14

RAJEEV, JAIN, TOMAR SANDEEP, and BHADAURIA JYOTI. "Synthesis of some Potential Antibacterial Sulphonamoylazopyrimidines." Journal of Indian Chemical Society Vol. 74, Aug 1997 (1997): 643. https://doi.org/10.5281/zenodo.5891923.

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School of Studies in Chemistry, Jiwaji University, Gwalior-474 011 <em>Manuscript received 27 May 1996, accepted 19 June 1996</em> Synthesis of some Potential Antibacterial Sulphonamoylazopyrimidines.

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15

Okumura, Yasuko, Chifumi Oi, Wataru Sakamoto, and Toshinobu Yogo. "Synthesis of SrTiO3 nanoparticle/polymer composite film using direct current field." Journal of Materials Research 23, no. 1 (2008): 127–32. http://dx.doi.org/10.1557/jmr.2008.0006.

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Nanocrystalline SrTiO3 particle/polymer composite film was synthesized from a titanium–organic film and strontium ion in aqueous solution by applying a direct current (dc) field. The titanium–organic precursor was synthesized from acetylacetone-modified titanium isopropoxide and a methacrylate derivative. Ultraviolet treatment of the titanium–organic film decreased the leaching of Ti moieties from the precursor film during dc treatment. Crystalline SrTiO3 particles were formed in the precursor films on stainless-steel substrates under a dc field above 40 °C without a high-temperature process.

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16

Li, Yuwen, Mei Qiu, Yubin Bai, Shaoqi Qu, and Zhihui Hao. "Improved synthesis of quinocetone and its two desoxymetabolites." Journal of the Serbian Chemical Society 83, no. 3 (2018): 265–70. http://dx.doi.org/10.2298/jsc170614118l.

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Oxidation of o-nitroaniline with sodium hypochlorite afforded benzofurazan oxide in 96 % yield, and treatment of benzofurazan oxide with acetylacetone in the presence of triethylamine gave 2-acetyl-3-methyl-quinoxaline- -1,4-dioxide in 94 % yield. Finally, condensation of 2-acetyl-3-methyl-quinoxaline- 1,4-dioxide with benzaldehyde using 4-(dimethylamino)pyridinium acetate as a catalyst led to quinocetone in 95 % yield. Subsequently, reduction of the synthesized quinocetone with sodium dithionite resulted in two deoxy derivatives, 1-(3-methyl-4-oxido-2-quinoxalinyl)-3-phenyl-2-propen-1-one and

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17

Prasadarao, Alamanda V., Ulagaraj Selvaraj, and Sridhar Komarnenici. "Fabrication of Sr2Nb2O7 thin films by sol-gel processing." Journal of Materials Research 10, no. 3 (1995): 704–7. http://dx.doi.org/10.1557/jmr.1995.0704.

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Sol-gel Sr2Nb2O7 thin films were deposited on Si(100) and Pt-coated Si substrates for the first time by spin-coating. The Sr2Nb2O7 precursor solution was prepared from strontium metal dissolved in 2-methoxyethanol, acetylacetone, and niobium ethoxide. The formation of phase pure Sr2Nb2O7 occurred via an intermediate perovskite phase of composition close to Sr0.82NbO3. Crack-free Sr2Nb2O7 films of ∼0.4 μm thickness were deposited on these substrates using a single-coating followed by heat treatment at 850 °C for 12 h. SEM microstructure and thin film XRD results indicated the deposition of a gr

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18

Wasfy, Ashraf A. F., Mohamed M. H. Arief, Mahassen S. Amine, Shafey G. Donia та Aly A. Aly. "γ-Oxo Carboxylic Acids in Heterocyclic Synthesis, III. Synthesis of Biologically Active 4-Benzylamino-6-(5,5-dioxodibenzothiophen- 2-yl)-2,3,4,5-tetrahydropyridazin-3-ones". Zeitschrift für Naturforschung B 57, № 6 (2002): 668–76. http://dx.doi.org/10.1515/znb-2002-0613.

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α-Benzylamino-β-(5,5-dioxodibenzothiophen-2-carbonyl)propionic acid (1) has been synthesized by treating the corresponding β-aroylacrylic acid with benzylamine in dry benzene. On treatment with hydrazine hydrate the keto acid 1 furnishes the corresponding pyridazinone derivative 2. The behaviour of 2 towards carbon electrophiles, namely, ethyl chloroacetate, acrylonitrile, formaldehyde and secondary amines (under Mannich reaction conditions), aromatic aldehydes and carbon nucleophiles, namely, POCl3/PCl3 and P2S5 has been investigated. The 3-chloropyridazine derivative 13 reacts with hydrazine

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19

Sopyan, Iis. "Silica -Titania Glass Fibers from Polytitanosiloxanes: Effect of Polymerization Mechanism on Mechanical Properties." Materials Science Forum 517 (June 2006): 73–76. http://dx.doi.org/10.4028/www.scientific.net/msf.517.73.

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SiO2 -TiO2 glass fibers have been prepared via dry spinning of the viscous solutions of polytitanosiloxanes followed by steam treatment and pyrolysis at 500, 700, and 900 °C for 1 h under ambient condition. The polymer was prepared via polycondensation of partially hydrolyzed tetraethoxysilane (TEOS) and an acetylacetone-chelated titan compound at various H2O/TEOS and Si/Ti ratios. Gel fibers formed shown tensile strength as low as 200 MPa and increased around 3 times after pyrolysis. The higher degree of TEOS hydrolysis the higher tensile strength of the fibers. The polymer with higher Si/Ti

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20

Olukan, Tuza, Jekaterina Sydorenko, Atanas Katerski, et al. "Insights into TiO₂ thin film photodegradation from Kelvin Probe AFM maps." Applied Physics Letters 121, no. 3 (2022): 031901. http://dx.doi.org/10.1063/5.0098788.

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The synthesis of TiO2 thin films by the chemical spray pyrolysis method at different titanium isopropoxide (TTIP) to acetylacetone (AcacH) ratios has been shown to lead to the highest photodegradation at 1 (TTIP):8 (AcacH). These films hold promise in the field of indoor pollution treatment. Carbon incorporation into the surface and into the TiO2 lattice could be responsible for the observed performance, but the mechanism is still to be elucidated. Here, we report the correlation of contact potential difference (CPD) contrast maps as produced using Kelvin Probe Force Microscopy, and the observ

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21

Rodríguez-Gutiérrez, Sofía Vanessa, Olalla Barreiro-Costa, Christian David Alcívar León, and Jorge Heredia-Moya. "Synthesis and Leishmanicidal Activity of Molecular Hybrids 1,2,3-Triazole-Chalcones." Chemistry Proceedings 3, no. 1 (2020): 55. http://dx.doi.org/10.3390/ecsoc-24-08356.

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Leishmaniasis is a largely neglected infection caused by Leishmania spp. parasites. The first-line treatment, antimoniate meglumine, has a large number of adverse effects, high cost and is prone to resistance development, hence the necessity of new alternatives. We report the synthesis of (2E)-1-[1-(4-methoxyphenyl)-5-methyl-1H-1,2,3-triazol-4-yl]-3-arylprop-2-en-1-one derivatives and the in vitro evaluation of their leishmanicidal activities. A series of 16 compounds were synthesized in three steps starting from p-anisidine with moderate to good yields and their biological activities were eva

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22

Brothers, Penelope J., Clifton E. F. Rickard, Claire M. Strange, and David C. Ware. "Two New Tripodal Ligands with an N4S3 Donor Set. The X-Ray Crystal Structure of 4,4′,4′′- [Nitrilotris(ethyleneimino)]tris(pent-3-ene-2-thione)." Australian Journal of Chemistry 50, no. 4 (1997): 373. http://dx.doi.org/10.1071/c96134.

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Two new compounds with a tripodal ligand architecture and with the potential to act as heptadentate N4S3 donor ligands are reported. H3S3trac (4,4′,4′′-[nitrilotris(ethyleneimino)]tris(pent-3-ene-2-thione)) is prepared by the reaction of acetylacetone with tren (tris(2-aminoethyl)amine), followed by treatment with P2S5. H3trimda (3,3′,3′′-[nitrilotris(ethyleneimino)]tris(2-phenylpropenethial)) is prepared by the reaction of 4-phenyl-1,2-dithiolium perchlorate with tren. A crystal structure of H3S3trac shows it to be monoclinic, P 21/c, a 11·443(7), b 11·7757(14), c 19·285(3) Å, β 106·68(2)°, Z

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23

Tseng, Ching-Fang, and Chih-Wen Lee. "Influences of acetylacetone and annealing treatment on the synthesis of Mg(Zr0.05Ti0.95)O3dielectric thin films by sol–gel method." Japanese Journal of Applied Physics 53, no. 11S (2014): 11RG02. http://dx.doi.org/10.7567/jjap.53.11rg02.

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24

M., Z. A. BADR, A. MAHGOUB S., M. ATTA F., S. MOUSTAFA O., and M. ABO EL-LATIF F. "Synthesis and Chemistry of 3-Amino- and 3-Hydrazocarbonylquinoxalinone Derivatives." Journal of Indian Chemical Society Vol. 71, Oct 1994 (1994): 617–19. https://doi.org/10.5281/zenodo.5896678.

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Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt <em>Manuscript received 4 June 1993, accepted 18 August 1993</em> 3-Ethoxycarbonyl-2(1<em>H</em>)-quinoxalinone (1) reacts with nucleophiles, namely, dimethylamine, diethylamine, <em>o</em>- phenylenediamine and/or p-phenylenediamine to produce the corresponding 3-<em>N</em>-substituted-aminocarbonyl-2(1<em>H)</em>-quinoxalinones (3-6). Treatment of 1 with hydrazine hydrate produces the 2(1<em>H</em>)-quinoxalinone-3-carbohydrazide (2) with acylating reagents, namely, acetic anhydride, acetic acid or acetyl chloride/pyr

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25

Mutlu, I. H., R. E. Goddard, and Y. S. Hascicek. "ESEM Hot Stage Evaluation of Sol-Gel Insulation Coatings for High Field HTS Magnets." Microscopy and Microanalysis 3, S2 (1997): 607–8. http://dx.doi.org/10.1017/s1431927600009922.

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High temperature, thin ceramic insulation coatings are necessary for the application of High Temperature Superconductors (HTS) in high field magnet technology. Especially in the so called “wind and react” technology, insulation coatings have to withstand the final heat treatment at about 900°C, otherwise turn to turn insulation will be broken. We have developed a sol-gel coating method for HTS tape conductors at NHMFL. Excellent adhesion at the interface due to the significant interfacial reactions, indicates that this sol-gel route is a feasible method for applying zirconia coatings. Sol-gel

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26

Bakhite, Etify A., Abdu E. Abdel-Rahman, and Elham A. Al-Taifi. "Fluorine-Containing Heterocycles: Part I. Synthesis of New 7-(2-thienyl)-9-Trifluoromethylpyrido[3′,2′:4,5]Thieno[3,2-d]Pyrimidines and Related Fused Tetracyclic Systems." Journal of Chemical Research 2005, no. 3 (2005): 147–54. http://dx.doi.org/10.3184/0308234054213726.

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3-amino-6-(2-thienyl)-4-trifluoromethylthieno[2,3-b]pyridine-2-carboxamide (3) and 2-carbonitrile analogue 5 were prepared by reaction of 3-cyano-6-(2-thienyl)-4-trifluoromethylpyridine-2(1H)-thione (1) with chloroacetamide or chloroacetonitrile respectively. Heating compound 3 with triethyl orthoformate led to the formation of pyridothienopyrimidinone derivative 6. Reaction of 6 with phosphorus oxychloride produced 4-chloropyrimidine derivative 7 which underwent some nucleophilic displacements upon treatment with thiourea, piperidine, morpholine or hydrazine hydrate to give the target 4-subst

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27

Awad, Ibrahim M. A., Abdu E. Abdel-Rahman, and Etify A. Bakhite. "Synthesis and application of some new S-(substituted)thio- and thienoquinoline derivatives as antimicrobial agents." Collection of Czechoslovak Chemical Communications 56, no. 8 (1991): 1749–60. http://dx.doi.org/10.1135/cccc19911749.

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Ethyl (4-aryl-3-cyano-5,6,7,8-tetrahydro-2-quinolinylthio) acetate (IIa, IIb) were prepared and reacted with hydrazine hydrate to give hydrazines IIIa, IIIb which underwent cyclization into thienoquinoline derivatives IVa, IVb. Reaction of IIIa, IIIb with phenyl isocyanate yielded semicarbazides Va, Vb. Similarly, IIIa, IIIb and IVb were interacted with methyl/phenyl isothiocyanates affording the corresponding thiosemicarbazide derivatives VIa - VId and XIVa, XIVb respectively. On the other hand, condensation of IIIb with acetylacetone gave the pyrazole VII treatment with ethoxide furnished VI

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28

Raduly, Florentina Monica, Valentin Raditoiu, Alina Raditoiu, et al. "Half-Curcuminoids Encapsulated in Alginate–Glucosamine Hydrogel Matrices as Bioactive Delivery Systems." Gels 10, no. 6 (2024): 376. http://dx.doi.org/10.3390/gels10060376.

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The therapeutic effects of curcumin and its derivatives, based on research in recent years, are limited by their low bioavailability. To improve bioavailability and develop the medical field of application, different delivery systems have been developed that are adapted to certain environments or the proposed target type. This study presents some half-curcuminoids prepared by the condensation of acetylacetone with 4-hydroxybenzaldehyde (C1), 4-hydroxy-3-methoxybenzaldehyde (C2), 4-acetamidobenzaldehyde (C3), or 4-diethylaminobenzaldehyde (C4), at microwaves as a simple, solvent-free, and eco-f

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29

Karakuscu, Aylin, and Macit Ozenbas. "Characterization of Iron Oxide Thin Films Prepared by Sol–Gel Processing." Journal of Nanoscience and Nanotechnology 8, no. 2 (2008): 901–6. http://dx.doi.org/10.1166/jnn.2008.d027.

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Iron oxide thin films were prepared by spin-coating a gel solution of iron(III) nitrate dissolved in 2-methoxyethanol and acetylacetone on glass and quartz substrates. The film thickness was adjusted by changing the spinning rate of the spin coater. Annealing was carried out between 300 °C to 600 °C to investigate the phases present in the films. Viscosity of the main solution was found as 0.0035 Pa·s by viscosity measurement. TGA/DTA analyses showed that heat treatment should be done between 330 &degC and 440 °C in order to produce maghemite thin films. SEM studies showed that single laye

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30

Al-Humaidi, Jehan Y., Mohamed G. Badrey, Ashraf A. Aly, et al. "Evaluation of the Binding Relationship of the RdRp Enzyme to Novel Thiazole/Acid Hydrazone Hybrids Obtainable through Green Synthetic Procedure." Polymers 14, no. 15 (2022): 3160. http://dx.doi.org/10.3390/polym14153160.

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The viral RNA-dependent RNA polymerase (RdRp) complex is used by SARS-CoV-2 for genome replication and transcription, making RdRp an interesting target for developing the antiviral treatment. Hence the current work is concerned with the green synthesis, characterization and docking study with the RdRp enzyme of the series of novel and diverse hydrazones and pyrazoles. 4-Methyl-2-(2-(1-phenylethylidene)hydrazineyl)thiazole-5-carbohydrazide was prepared and then condensed with different carbonyl compounds (aldehydes and ketones either carbocyclic aromatic or heterocyclic) afforded the correspond

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31

Obregón-Mendoza, Marco A., William Meza-Morales, Yair Alvarez-Ricardo, M. Mirian Estévez-Carmona, and Raúl G. Enríquez. "High Yield Synthesis of Curcumin and Symmetric Curcuminoids: A “Click” and “Unclick” Chemistry Approach." Molecules 28, no. 1 (2022): 289. http://dx.doi.org/10.3390/molecules28010289.

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The worldwide known and employed spice of Asian origin, turmeric, receives significant attention due to its numerous purported medicinal properties. Herein, we report an optimized synthesis of curcumin and symmetric curcuminoids of aromatic (bisdemethoxycurcumin) and heterocyclic type, with yields going from good to excellent using the cyclic difluoro-boronate derivative of acetylacetone prepared by reaction of 2,4-pentanedione with boron trifluoride in THF (ca. 95%). The subsequent cleavage of the BF2 group is of significant importance for achieving a high overall yield in this two-step proce

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32

El-mahdy, Kamelia, Azza El-Kazak, Mohamed Abdel-Megid, Magdy Seada, and Osama Farouk. "Synthesis, Characterization and Biological Evaluation of some New Thieno[2,3-d]Pyrimidine Derivatives." JOURNAL OF ADVANCES IN CHEMISTRY 5, no. 1 (2009): 581–91. http://dx.doi.org/10.24297/jac.v5i1.937.

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10-Oxo-4,6,7,8,9,10-hexahydroprazolo[1,5-a][1]benzothieno[2,3-d]pyrimidine-3-carbaldehyde (2) was prepared by Vilsmeier-Haack reaction of 3-amino-2-methyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidin-4(3H)-one (1). Reaction of carbaldehyde derivative 2 with malononitrile afforded arylidene malononitrile 3. Cyclization of the latter compound with thiourea yielded pyrimidinethione 4. Interaction of carbaldehyde derivative 2 in presence of thiourea with keto- compounds such as ethyl acetoacetate, or acetylacetone, or dimedone or ethyl cyanoacetate gave pyrimidine derivatives 5-8. Hydrazinolys

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Muangnoi, Chawanphat, Pahweenvaj Ratnatilaka Na Bhuket, Ponsiree Jithavech, et al. "Scale-Up Synthesis and In Vivo Anti-Tumor Activity of Curcumin Diethyl Disuccinate, an Ester Prodrug of Curcumin, in HepG2-Xenograft Mice." Pharmaceutics 11, no. 8 (2019): 373. http://dx.doi.org/10.3390/pharmaceutics11080373.

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Previously, we synthesized curcumin and a succinate ester prodrug of curcumin namely curcumin diethyl disuccinate (CurDD) in the lab scale, which yielded hundred milligrams to few grams of the compounds. CurDD was found to be more stable in a phosphate buffer pH 7.4 and exhibited better cytotoxicity against Caco-2 cells than curcumin. Here, the one-pot syntheses of curcumin and CurDD were scaled up to afford multigram quantities of both compounds for preclinical studies using a 10-L chemical reactor. The key steps for the synthesis of curcumin were the formation of boron-acetylacetone complex

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Guo, Lei, Yifan Niu, Jianjun Hu, Shaohua Ju, Yongwan Gu, and Wenjin Tan. "A New Process for Efficient Recovery of Rhodium from Spent Carbonyl Rhodium Catalyst by Microreactor." Materials 16, no. 18 (2023): 6271. http://dx.doi.org/10.3390/ma16186271.

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Triphenylphosphine acetylacetone carbonyl rhodium (ROPAC) is an important catalyst in the petrochemical industry, and its deactivated waste catalyst holds significant value for recovery. This study focuses on the existing forms of rhodium (Rh) in waste catalysts and the current status of traditional processes. A green, efficient, and continuous recovery technique was developed using a sealed stainless steel microchannel reactor. The influence of reaction temperature, reaction time, and phase ratio on the Rh recovery rate was investigated, and the process parameters were optimized using respons

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Neeraj, Sharma, Sharma Vipin, S. Bhatt S., and Chaudhry S.C. "Reactivity of some di- and triphenyltin(IV) hydroxamates with ligands containing labile protons." Journal of Indian Chemical Society Vol. 76, Oct 1999 (2022): 469–71. https://doi.org/10.5281/zenodo.5852589.

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Department of Chemistry, Himachal Pradesh University, Summer Hill, Shimla-171 005, India <em>Manuscript received 18 December 1998, revised 22 June 1999, accepted 29 June 1999</em> The reactivity of di- and triphenyltin(IV) hydroxamate complexes of composition <strong>(C<sub>6</sub>H<sub>5</sub>)<sub>2</sub>SnCl<sub>2-n</sub>(XBHA)<sub>n</sub></strong> and <strong>(C<sub>6</sub>H<sub>5</sub>)<sub>3</sub>Sn(XBHA) </strong>(<em>n</em> = 1 and 2; X = <em>p</em>-OMe, <em>o</em>-Cl, <em>p</em>-NO<sub>2</sub>; BHA = anion of <strong>XArCONHOK</strong>) with ligands containing labile protons such as a

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Alsayari, Abdulrhman, Abdullatif Bin Muhsinah, Yahya I. Asiri, et al. "Arylhydrazono/Aryldiazenyl Pyrazoles: Green One-Pot Solvent-Free Synthesis and Anticancer Evaluation." Letters in Organic Chemistry 17, no. 10 (2020): 772–78. http://dx.doi.org/10.2174/1570178617666200320104923.

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The aim of this study was to synthesize and evaluate the biological activity of pyrazole derivatives, in particular, to perform a “greener” one-pot synthesis using a solvent-free method as an alternative strategy for synthesizing hydrazono/diazenyl-pyridine-pyrazole hybrid molecules with potential anticancer activity. Effective treatment for all types of cancers is still a long way in the future due to the severe adverse drug reactions and drug resistance associated with current drugs. Therefore, there is a pressing need to develop safer and more effective anticancer agents. In this context, s

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Ahmed, Nesreen S., Alaadin E. Sarhan, Aisha A. K. Al-Ashmawy, Abd El-Galil E. Amr, Mogedda E. Haiba, and Elsayed A. Elsayed. "Synthesis and Characterization of New Dihydronaphthalene Candidates as Potent Cytotoxic Agents against MCF-7 Human Cancer Cells." BioMed Research International 2020 (December 23, 2020): 1–10. http://dx.doi.org/10.1155/2020/8649745.

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In the present work, a new series of dihydronaphthalene derivatives were synthesized starting with 6-methoxy-1-tetralone 1, and the corresponding hydrazine derivative 2. Reaction of compound 2 with aryl isothiocyanates produced thiosemicarbazides 3a-d, which were reacted with ethyl chloroacetate to give thiazolidinone derivatives 4a-d. Pyrano thiazolecarbonitrile derivatives 5a-f were prepared by heating a mixture of compounds 4a or 4c, aryl aldehydes, and malononitrile utilizing distilled water in the presence of catalytic amount of potassium hydrogen phthalate. Also, treatment of 4a with DMF

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Abdel-Rahman, Abdu E., Etify A. Bakhite, and Elham A. Al-Taifi. "Fluorine-containing Heterocycles: Part II Synthesis and Reactions of New Thieno[2,3-b]Pyridine Derivatives Bearing Trifluoromethyl Group." Journal of Chemical Research 2005, no. 7 (2005): 461–68. http://dx.doi.org/10.3184/030823405774309014.

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Ethyl [3-cyano-6-(2-thienyl)-4-trifluoromethylpyridin-2-ylthio]acetate (2) and ethyl 3-amino-6-(2-thienyl)-4-trifluoromethylthieno[2,3-b]pyridine-2-carboxylate (3) were prepared by reaction of 3-cyano-6-(2-thienyl)-4-trifluoromethylpyridine-2(1H)-thione (1) with ethyl chloroacetate. The reaction of both 2 and 3 with hydrazine hydrate under different conditions was studied. The main products were [3-cyano-6-(2-thienyl)-4-trifluoromethyl-2-pyridinylthio]acetohydrazide (4) and 3-amino-6-(2-thienyl)-4-trifluoromethylthieno[2,3-b]pyridine-2-carbohydrazide (5). The condensation of acethydrazide 4 wi

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Sophy, Mohamed Ahmed Elian, and Mohamed Ahmed Mahmoud Abdel Reheim. "Synthesis of Some New 1, 3, 4-Oxadiazole, Pyrazole, and Pyrimidine Bearing Thienopyrazole Moieties." Current Organic Synthesis 17, no. 8 (2020): 661–70. http://dx.doi.org/10.2174/1570179417999200730215318.

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Aim and Objective: According to the literature survey, pyrazole is a unique template that is associated with several biological activities. This article highlighted the research work of many researchers reported in the literature for synthesis and different pharmacological activities of the pyrazole nucleus. In the present work, pyrazol- 3-one 1 was reacted with cyanoacetic acid hydrazide and elemental sulfur to afford the corresponding thieno[3,2-c]pyrazol-6-carbohydrazide 3 derivatives. The latter compound reacted with some electrophilic reagents such as DMF-DMA, triethylorthoformate, arylid

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Bhawana, Thadhaney, Sharma Shweta, Sharma Chirag, and L. Talesara G. "Facile synthesis and biological evaluation of some ethoxyphthalimide derivatives of pyrazolylthiazoloisoxazoles and pyrazolylthiadiazoles." Journal of Indian Chemical Society Vol. 86, Nov 2009 (2009): 1204–13. https://doi.org/10.5281/zenodo.5820812.

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Synthetic Organic Chemistry Laboratory, Department of Chemistry, M. L. Sukhadia University, Udaipur-313 001, Rajasthan, India <em>E-mail </em>: gtalesara@yahoo.com <em>Manuscript received 15 December 2008, revised 15 May 2009, accepted 26 June 2009</em> Reaction of acetylacetone with hydrazine hydrate gave 3,5-dimethyl-1<em>H</em>-pyrazole (1) which when reacted with ethylchloroacetate in acetone and thiosemicarbazide yielded ethyl-3,5-dimethyl-1<em>H</em>-pyrazol-l-yl-acetate (2) and 2-[(3,Sdimethyl-1<em>H</em>-pyrazol-1-yl)acetyl]hydrazine carbothioamide (3) respectively. Compound 3 acted as

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Lenarda, M., R. Ganzerla, L. Storaro, R. Frattini, and S. Enzo. "Structural studies of Al-based powders prepared by chemical methods." Journal of Materials Research 7, no. 9 (1992): 2418–23. http://dx.doi.org/10.1557/jmr.1992.2418.

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Finely dispersed metal powders have been obtained after chemical reduction of Ni and Co acetylacetonate by lithium aluminum hydride in tetrahydrofuran at low temperature. The Al/Ni and Al/Co stoichiometry of the as-reduced powders was 1.1 and 1.2, respectively. The structure and thermal stability of the as-reduced powders were affected by the temperature of reduction. For the NiAl powders it was found that the thermal treatment initially induces a separation of highly unstable Ni(Al) and Al(Ni) solid solutions, which subsequently react to give a single NiAl phase of cubic structure not reporte

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Hou, Yi, Yani Zhang, Xiaoqing Du, et al. "Flexible Fe3Si/SiC ultrathin hybrid fiber mats with designable microwave absorption performance." RSC Advances 8, no. 59 (2018): 33574–82. http://dx.doi.org/10.1039/c8ra06941g.

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Flexible Fe<sub>3</sub>Si/SiC ultrathin fiber mats have been fabricated by electrospinning and high temperature treatment (1400 °C) using polycarbosilane (PCS) and ferric acetylacetonate (Fe(acac)<sub>3</sub>) as precursors.

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Zhu, Yuner, and Philip D. Evans. "Surface Protection of Wood with Metal Acetylacetonates." Coatings 11, no. 8 (2021): 916. http://dx.doi.org/10.3390/coatings11080916.

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Metal acetylacetonates are coordination complexes of metal ions and the acetylacetonate anion with diverse uses including catalysts, cross-linking agents and adhesion promotors. Some metal acetylacetonates can photostabilize polymers whereas others are photocatalysts. We hypothesize that the ability of metal acetylacetonates to photostabilize wood will vary depending on the metal in the coordination complex. We test this hypothesis by treating yellow cedar veneers with different acetylacetonates (Co, Cr, Fe, Mn, Ni, and Ti), exposing veneers to natural weathering in Australia, and measuring ch

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Hayashi, Mikio, Dennis T. Lee, Matheus Dorneles Mello, J. Anibal Boscoboinik, and Michael Tsapatsis. "ZIF‐8 Membrane Permselectivity Modification by Manganese(II) Acetylacetonate Vapor Treatment." Angewandte Chemie International Edition 60, no. 17 (2021): 9316–20. http://dx.doi.org/10.1002/anie.202100173.

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Hayashi, Mikio, Dennis T. Lee, Matheus Dorneles Mello, J. Anibal Boscoboinik, and Michael Tsapatsis. "ZIF‐8 Membrane Permselectivity Modification by Manganese(II) Acetylacetonate Vapor Treatment." Angewandte Chemie 133, no. 17 (2021): 9402–6. http://dx.doi.org/10.1002/ange.202100173.

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Tsogoo, Ariunzaya, Solongo Batmandakh, Erdene Ochir Ganbold, et al. "Comparison Study on Antimicrobial and Photocatalytic Activity of Different Shaped ZnO Nanoparticles." Solid State Phenomena 288 (March 2019): 87–97. http://dx.doi.org/10.4028/www.scientific.net/ssp.288.87.

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ZnO nanoparticles (ZnO NPs) were synthesized through surfactant free non-hydrolytic organic phase method in which zinc acetate and zinc acetylacetonate were selected as precursors. Structural and size analysis of the as-prepared nanoparticles performed on X-ray diffractometer, transmission electron microscopy, scanning electron microscopy with energy dispersive X-ray spectroscopy and Fourier transform infrared spectroscopy showed that the obtained nanoparticles were crystalline particles with all reflections matching to wurtzite. TEM images revealed that ZnO NPs from synthesis in which zinc ac

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Dhere, Sunetra L., Uzma K. H. Bangi, Sanjay S. Latthe, and A. Venkateswara Rao. "Enhancement in hydrophobicity of silica films using metal acetylacetonate and heat treatment." Journal of Physics and Chemistry of Solids 72, no. 1 (2011): 45–49. http://dx.doi.org/10.1016/j.jpcs.2010.10.086.

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Prasadarao, A. V., Ulagaraj Selvaraj, Sridhar Komarneni, and Amar S. Bhalla. "Sol-gel synthesis of Ln2(Ln = La, Nd)Ti2O7." Journal of Materials Research 7, no. 10 (1992): 2859–63. http://dx.doi.org/10.1557/jmr.1992.2859.

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Lanthanum and neodymium titanates were prepared by a sol-gel route. Synthesis of La2Ti2O7 from pure alkoxide precursors yielded an intermediate perovskite type phase, La(1–x)TiO3, which partially transformed to La2Ti2O7 on heating to 1500 °C. Substitution of the lanthanum acetylacetonate for alkoxide precursor yielded La2Ti2O7 without any intermediate phase at a very low temperature of 700 °C. Sintering of the La2Ti2O7 gel powder yielded a highly dense ceramic with ∼97% theoretical density. Similar sintering treatment resulted in ∼92% theoretical density for Nd2Ti2O7.

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Baird, Ian R., Steven J. Rettig, Brian R. James та Kirsten A. Skov. "Synthesis and X-ray structural characterization of the ruthenium β-diketonato complexes: Ru(hfac)3, cis-Ru(hfac)2(MeCN)2, and cis-Ru(hfac)(acac)(MeCN)2". Canadian Journal of Chemistry 77, № 11 (1999): 1821–33. http://dx.doi.org/10.1139/v99-175.

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Ru(hfac)3 (2) was synthesized via peroxide oxidation of the Ru(II) species [Na][Ru(hfac)3] (1) (hfac = 1,1,1,5,5,5-hexafluoroacetylacetonate). Treatment of either 1 or 2 with CF3SO3H in MeCN generated cis-Ru(hfac)2(MeCN)2 (3). Ru(acac)2(hfac) (4) (acac = acetylacetonate) was generated by addition of hfac to an EtOH solution of cis-[Ru(acac)2(MeCN)2][CF3SO3]. Subsequent treatment of 4 with CF3SO3H in MeCN yielded cis-Ru(acac)(hfac)(MeCN)2 (7). Syntheses of [Na][Ru(hfac)2(acac)] (5) and Ru(hfac)2(acac) (6) are also reported. The complexes were characterized generally by elemental analysis, cycli

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Cloet, V., M. C. Cordero-Cabrera, T. Mouganie, et al. "Sol-Gel Ink-Jet Printing Technique for Synthesis of Buffer Layers of Coated Conductors." Advances in Science and Technology 47 (October 2006): 153–58. http://dx.doi.org/10.4028/www.scientific.net/ast.47.153.

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In this present work, two buffer layers (La2Zr2O7 and CeO2) were deposited by a non-contact computer-controlled ink-jet coating technique with sol-gel precursors on highly textured Ni-5%W Rolling Assisted Biaxially Textured substrates (RABiTS). Lanthanum acetate and cerium acetylacetonate were used as precursors for the LZO and CeO2 sol respectively. After a high temperature heat treatment (heating at 900°C for LZO and at 1100°C for CeO2) under reducing atmosphere, epitaxial textured buffer layers were obtained. XRD and pole figures were used to analyse the texture of the films, the microstruc

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