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Journal articles on the topic 'P-hydroxy benzaldehyde'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Doukeh, Rami, Maria Râpă, Ecaterina Matei, et al. "An Evaluation of Glycerol Acetalization with Benzaldehyde over a Ferromagnetic Heteropolyacid Catalyst." Catalysts 13, no. 4 (2023): 782. http://dx.doi.org/10.3390/catal13040782.

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Tungstophosphoric acid (H3PW12O40) supported on silica-coated magnetite nanoparticles has been prepared and used as a heterogeneous acid catalyst (Fe3O4@SiO2@HPW) in the condensation of benzaldehyde (B) with glycerol (Gly) for the production of cyclic acetals. Physicochemical techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier-transform infrared spectrometry (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and N2 physisorption were used to characterize the prepared catalyst. The effect of glycerol/benzaldehyde molar ratio

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2

Ranjana Sharma Goswami, Y. C. Goswami, and D. Kumar. "Synthesis of Zinc Sulfide Luminescent Nanoparticles Using Zinc Metal Complexes of S-benzyl Dithiocarbonate via Microwave Irradiation Route." International Journal of Nanoelectronics and Materials (IJNeaM) 16, no. 3 (2024): 725–36. http://dx.doi.org/10.58915/ijneam.v16i3.1339.

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This paper reported highly luminous zinc sulfide (ZnS) nanoparticles grown by microwave-irradiated single molecular precursors. The precursor was obtained by Schiff bases of S-benzyl dithiocarbazate (SBDTC) ligand using 5-Bromo-4-hydroxy-3-methoxy-2-nitro Benzaldehyde; 4NNbiscyno diethylamino benzaldehyde and p-amino acetophenone. The nanoparticles obtained were characterized by X-ray diffraction studies for structural analysis, transmission electron micrographs (TEM) for morphological analysis, and UV-Vis spectra for optical analysis. X-ray diffractograms exhibit mixed structures analysis (wu

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3

SAPNA, KUMARI, NAVIN KUMAR SHARMA, and SEEMA KOHLI. "Synthesis, Characterization and Antimicrobial Studies of Copper (II) Complexes of Semicarbazone and Thiosemicarbazone of m- Hydroxy Benzaldehyde and p-Hydroxy Benzaldehyde." Oriental Journal Of Chemistry 28, no. 2 (2012): 969–74. http://dx.doi.org/10.13005/ojc/280244.

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4

Tripathi, Mamta, Ashish Kumar Asatkar, Stalin Antony, et al. "Copper(ii) complexes supported by modified azo-based ligands: Nucleic acid binding and molecular docking studies." Open Chemistry 20, no. 1 (2022): 505–16. http://dx.doi.org/10.1515/chem-2022-0164.

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Abstract Two new copper(ii) complexes [CuL1] (1) and [CuL2] (2) derived from azo-based ligands 2-hydroxy-5-p-tolylazo-benzaldehyde (HL1) and 1-(2-hydroxy-5-p-tolylazo-phenyl)-ethan-one (HL2) were synthesized. These two ligands and their metal complexes were characterized by elemental analysis, nuclear magnetic resonance (1H and 13C), infrared, and UV/Vis spectroscopic techniques. Spectroscopy and other theoretical studies reveal the geometry of copper complexes, and their binding affinity towards nucleic acids are major groove binding.

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5

JEONG, EUN-YOUNG, KYOUNG-SHIK CHO, and HOI-SEON LEE. "Food Protective Effects of Periploca sepium Oil and Its Active Component against Stored Food Mites." Journal of Food Protection 75, no. 1 (2012): 118–22. http://dx.doi.org/10.4315/0362-028x.jfp-11-315.

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The aim of this study was to examine the acaricidal activity of Periploca sepium oil and its active component against Tyrophagus putrescentiae. Based on its 50% lethal dose (LD50) value, P. sepium oil (8.45 μg/cm2) was highly active against T. putrescentiae. The active constituent of P. sepium was isolated by chromatographic techniques and identified as 2-hydroxy-4-methoxybenzaldehyde. In the comparison with synthetic acaricides, the acaricidal activity of 2-hydroxy-4-methoxybenzaldehyde (0.94 μg/cm2) against T. putrescentiae was 12.2- and 31.2-fold greater than those of benzyl benzoate (11.45

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6

Mishra, Sonali, Nupur Srivastava, Velusamy Sundaresan, and Karuna Shanker. "Amruthapala (Decalepis arayalpathra (J. Joseph and V. Chandras.) Venter): A Comprehensive Review on Diversity, Therapeutic Uses, and Valorization of Bioactive Constituents." Current Pharmaceutical Biotechnology 20, no. 5 (2019): 376–89. http://dx.doi.org/10.2174/1389201020666190318115504.

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Background: Decalepis arayalpathra (J. Joseph and V. Chandras.) Venter is used primarily for nutrition besides its therapeutic values. Traditional preparations/formulations from its tuber are used as a vitalizer and blood purifier drink. The folklore medicinal uses cover inflammation, cough, wound healing, antipyretic, and digestive system management. A comprehensive review of the current understanding of the plant is required due to emerging concerns over its safety and efficacy. Objective: The systematic collection of the authentic information from different sources with the critical discuss

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7

Elsayed, Galal A., and Ali Kh Khalil. "Facile Synthesis of Chalcone Glycosides Isolated from Aerial Parts of Brassica rapa l. ‘hidabeni'." Current Organic Synthesis 15, no. 3 (2018): 423–29. http://dx.doi.org/10.2174/1570179414666170824161618.

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Background: The Cruciferous family of vegetables which includes Brassica Turnips showed antioxidant and hepatoprotective effects. The phytochemical investigations of the aerial parts of the traditional Japanese turnip vegetable (B. rapa L. 'hidabeni') revealed the presence of three chalcone glycosides, along with other glycoside components. As many natural products inhibited Ag-stimulated degranulation in cellular system, those chalcone glycosides have biological significance of suppressing antigen-stimulated degranulation in rat basophilic leukemia RBL-2H3 cells. Aim and Objective: Further in

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8

Journal, Baghdad Science. "Synthesis of Some new 2-(4-Aryliminophenoxy)N-Arylacetamide Via p-hydroxy benzaldehyde." Baghdad Science Journal 11, no. 2 (2014): 486–90. http://dx.doi.org/10.21123/bsj.11.2.486-490.

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Chloroacetamide derivatives (2a-g) have been prepared through reaction of chloroacetyl chloride(1) (which prepared by the reaction of chloroacetic acid with thionyl chloride) with primary aromatic amines and sulfa compounds to afford compounds (2a-g) which then reacted with p-hydroxy benzaldehyde via Williamson reaction to obtaine the new compounds 2-(4-formyl phenoxy)-N-aryl acetamide (3a-g). Finally , compounds (3a-g) will be use as a good synthon to prepare the Schiff bases represented by compounds 2-(4-aryliminophenoxy)-N-arylacetamide (4a-g). through , reaction with some primary aromatic

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9

Ban Mahdi Salih and Muna Abass Hadi. "Synthesis, Identification and Spectral Studies of Some New Schiff base ligand Complexes Contained 3,4-Diaminobenzophenone and pyridoxal hydrochloride Compounds." Journal of Kufa for Chemical Sciences 2, no. 9 (2023): 115–27. http://dx.doi.org/10.36329/jkcm/2022/v2.i9.13290.

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Anew Schiff base ligand. (HMPHM) 3-((4-chlorobenzylidene)amino)-4-((€-(3-hydroxy-5-(hydroxyl methyl)-2-Methyl)puridin-4-yl)methylene)amino)phenyl)(phenyl)methanon has been Prepared from reacting(3-amino-4-(((3-hydroxy-5-(hydroxylmethyl)-2-methylpyridin-4-yl)methylene)amino)phenyl)(phenyl)methanone with P-Chloro benzaldehyde Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Au(III) ions were used to create a new series of chelate complexes. The structures of the new Schiff base ligand and their transition metal complexes were characterized by using Fourier-transform infrared spectroscopy (FTIR), prot

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10

Anwar, Chairil, Yogo Dwi Prasetyo, Sabirin Matsjeh, Winarto Haryadi, Eti Nurwening Sholikhah, and Nendrowati Nendrowati. "Synthesis of Chalcone Derivatives and Their in vitro Anticancer Test Against Breast (T47D) and Colon (WiDr) Cancer Cell Line." Indonesian Journal of Chemistry 18, no. 1 (2018): 102. http://dx.doi.org/10.22146/ijc.26864.

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The synthesis of chalcone derivatives as target compounds and anticancer test against breast (T47D) and colon (WiDr) cell line had been performed. The synthesis was performed by Claisen-Schmidt condensation by using acetophenone and benzaldehyde derivatives. The anticancer activity test of chalcone derivatives was carried out by MTT assay against T47D and WiDr cell lines. The synthesis was started by reacting 4-hydroxyacetophenone and benzaldehyde derivatives such as p-anisaldehyde (chalcone A [(E)-4'-hydroxy-4-methoxychalcone]), veratraldehyde (chalcone B [(E)-4'-hydroxy-3,4-dimethoxychalcone

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11

Firyal W. Askar, Khitam J. Nabhan та Hammed H. Mohamed. "تحضير ودراسات مضادات الميكروبات للمجمعات المعدنية لقواعد شيف 2- (بنزيليدين) بنزوثيازول هيدرازون". Journal of the College of Basic Education 15, № 59 (2022): 1–12. http://dx.doi.org/10.35950/cbej.v13i59.6534.

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تضمن هذا البحث تحضير قاعدة شف 2- (benzylidine) benzothiazole hydrazone من تفاعل 2-hydrazinobenzothiazole مع p-hydroxy benzaldehyde جرى تشخيص قاعدة شف بطريق طيف الأشعة تحت الحمراء (IR ) وطيف الاشعة البنفسجية-المرئية (( UV-Vis و ثم استخدام هذه القاعدة كليكاند في تحضير المعقدات الجديدة مع ايونات عناصر البلاديوم , النيكل, البلاتين والنحاس الثنائية و. جرى تناسق هذه الأيونات مع الليكاند من خلال ذرتي نتروجين مجموعة الأزوميثين

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12

Kuroda, Chiaki, and Eriko Nishio. "Substituent Effect in Color of Ehrlich's Test of Tetrahydrobenzofuran." Natural Product Communications 2, no. 5 (2007): 1934578X0700200. http://dx.doi.org/10.1177/1934578x0700200514.

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Reaction of 4,5,6,7-tetrahydrobenzofuran derivatives, model compounds of furanoeremophilanes, with p-dimethylamino-benzaldehyde (Ehrlich's reagent) under acidic conditions was studied both on TLC and in a flask. 4-Hydroxy, 4-methoxy, and 4-acetoxy derivatives showed a pink/purple color, while 7-hydroxy, 7-methoxy, and 7-acetoxy derivatives showed a dark green color. The reaction of a 4-oxo derivative was slow showing an orange color on TLC. 7-Oxo derivatives and benzofuran were negative to Ehrlich's test. It was shown that an intermediate cation corresponding to the pink color was generated fr

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13

M., Yildtz, Dulger B., and Cinar A. "Synthesis and characterization of new crown ethers of Schiff base type and their complexes." Journal of Indian Chemical Society Vol. 82, May 2005 (2005): 414–20. https://doi.org/10.5281/zenodo.5829999.

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Department of Chemistry, Department of Biology, Faculty of Arts and Sciences, Canakkale Onsekiz Mart University, 17100 Canakkale, Turkey <em>Manuscript received 25 February 2004, revised 28 September 2004, accepted 2 February 2005</em> New crown ether ligands of Schiff base type (4-11) have been synthesised by the reaction of two equivalents of benzaldehyde, 2-hydroxybenzaldehyde, 2,3-di hydroxy benzaldehyde, 5-methoxy-2-hydroxy benzaldehyde, 5- hromo-2- hydroxybenzaldehyde, 5-nitro-2-hydroxybenzaldehyde, 4-hydroxybenzaldchyde or 2-hydroxy-l-naphthalckhyde with 2,3,5,6- di[ 4-aminobcnzo]-1,7,

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14

Aftab, Alam, Kumar D., Kumar Arvind, and Singh Kushwah Bhupendra. "Microwave-Assisted Synthesis of Zinc Sulfide Nanoparticles from s-benzyl--(4-hydroxy-3- methoxybenzylidene)dithiocarbazate Metal Complex and DFT Studies." International Journal of Innovative Science and Research Technology 8, no. 2 (2023): 1831–40. https://doi.org/10.5281/zenodo.7712902.

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In this paper, we have reported highly luminious Zinc sulphide nanoparticles grown by microwave irradiated single molecular precursors. The Schiff base S-benzyl-𝜷-N-(4-hydroxy-3- methoxybenzylidene)dithiocarbazate (ligand-IV) obtained from S-benzyl dithiocarbazate (SBDTC) and 4- Hydroxy-3-methoxy benzaldehyde. The nanoparticles obtained via thermal decomposition method and were characterized by X-ray diffraction patterns, Transmission electron micrographs (TEM) for morphological analysis and U-Vis spectra for optical analysis. X-ray diffractograms exhibit mixed structures analysis (Wurtzite an

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15

Rajesh, Kancherla, Bandapalli Palakshi Reddy, and Vijayaparthasarathi Vijayakumar. "Novel bipodal, tripodal, and tetrapodal 1,4-dihydropyridines — Microwave-assisted synthesis and structural confinements." Canadian Journal of Chemistry 89, no. 10 (2011): 1236–44. http://dx.doi.org/10.1139/v11-088.

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The one pot, three component reaction of p-hydroxy benzaldehyde, β-ketoester, and ammonium acetate afforded the corresponding monopodal 1,4-dihydropyridines as building blocks, which in turn converted into diversified novel bipodal, tripodal, and tetrapodal 1,4-dihydropyridines with different alkylating agents through conventional as well as microwave assisted reactions. The unambiguous structural confinements of the all the synthesized compounds were drawn out with the help of 2D NMR (H-H COSY and C-H COSY).

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16

Naureen, Humaira, Michel Feussi Tala, Khaled A. Shaaban, Mohamed Shaaban, Anja Schüffler, and Hartmut Laatsch. "A new furan carboxamide and two potential precursors from a terrestrial streptomycete." Zeitschrift für Naturforschung B 72, no. 3 (2017): 175–82. http://dx.doi.org/10.1515/znb-2016-0202.

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Abstract Three new bioactive metabolites, 1,6-dihydroxy- 2-methyl-heptan-4-one (1), 4-hydroxy-1-(2-methyl-oxiranyl)- pentan-2-one (2), and 2-(2-hydroxy-propyl)-4-methylfuran- 3-carboxylic acid amide (3) were isolated from the terrestrial Streptomyces sp. isolate ANK245, along with the new microbial constituent p-vinylanisol (4a) and the known metabolites p-vinyl-phenol (4b) and phenethyl alcohol. Analysis of the nonpolar part of the extract by gas chromatography/mass spectrometry (GC-MS) provided further evidence for tetradecanoic acid, 9-octadecenoic acid, hexadecanoic acid, 2-methoxy-4-vinyl

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17

Xu, Xiaotian, Chengqiong Wei, Yingying Yang, et al. "New discovery of anti-ulcerative colitis active ingredients of Nostoc commune: p-Hydroxy benzaldehyde." Journal of Functional Foods 77 (February 2021): 104327. http://dx.doi.org/10.1016/j.jff.2020.104327.

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18

Brandes, Benjamin, Sophie Hoenke, Michael Türk, et al. "A unified strategy for the synthesis of amorfrutins A and B and evaluation of their cytotoxicity." Mediterranean Journal of Chemistry 10, no. 9 (2020): 858. http://dx.doi.org/10.13171/mjc10902011171546rc.

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<p class="p1">3,5-Dimethoxy-benzaldehyde was used as a starting material to synthesize a central intermediate, 2-hydroxy-4-methoxy-6-phenethylbenzoic acid that was converted very quickly and with good yields into amorfrutins A and B. Furthermore, this compound was also used as a starting material to synthesize a piperazinyl-rhodamine B conjugate. The latter compound showed good cytotoxicity (EC<sub>50</sub> = 2.3–5.1 mM) and promising selective cytotoxicity (S = 2.1–4.6) for human tumor cell lines as compared to non-malignant fibroblasts (NIH 3T3).</p>

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19

Jaffer, et. al., Noor Dia. "Preparation, investigation and studying the (physical, spectral and biological activity) of new monomers and heterocyclic compounds containing nitrogen and oxygen." Periodicals of Engineering and Natural Sciences (PEN) 11, no. 2 (2023): 284–96. https://doi.org/10.21533/pen.v11.i2.119.

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This study involves the preparation of seven new compounds, some of them contain two functional groups that are considered condensation monomers. On the other hand, other compounds contain double bonds that are considered addition monomers. They started from 2- amino Thiazole with 2-hydroxy benzaldehyde (sa-licylaldehyde) in ethanol and hydrochloric acid to prepare azo compound (A), which reacted with acetophe-none derivatives (p-bromo, p-chloro and p-hydroxy acetophenone) to prepare chalcone monomers deriva-tives (H1-H3). Also, the work includes preparing seven-membered heterocyclic rings thr

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20

Yuosra K. Alasadi, Farouq Emam Hawais, and Ahmed A. ALKazmi. "Synthesis and Characterization of Some New Pyrazoline Derivatives Containing Azo Group by One Pot Method." Tikrit Journal of Pure Science 23, no. 3 (2018): 67–74. http://dx.doi.org/10.25130/tjps.v23i3.502.

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This research includes the preparation of some of pyrazoline derivatives containing the azo group by one pot method through the treatment of the compound 2-hydroxy-5-(m-tolyldiazenyl) benzaldehyde with p-chlorob enzylchloride to give the compound(1) using the Williamson reaction. The compound (1) is treated with a series of ketones and with phenylhydrazine in the base medium to give new derivatives of pyrazoline (2-11). The synthesized compounds were characterized by elemental analyses and FT-IR, 1H-NMR, 13C-NMR, 13C-DEPT.

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21

Anand, K. Halve, Bhaskar Bhuwan, Sharma Vasudha, Bhadauria Deepti, and Bhadauria Raman. "Facile synthesis and antimicrobial screening of some biorelevant thiosemicarbazone and its analogues." Journal of Indian Chemical Society Vol. 84, Oct 2007 (2007): 1032–34. https://doi.org/10.5281/zenodo.5827194.

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School of Studies in Chemistry, Jiwaji University, Gwalior-474 Oil, Madhya Pradesh, India <em>E-mail</em>: drhalve_chemjiwaji@rediffmail.com; bhuwan_bhaskar@jubl.com <em>Manuscript received 21 June 2006, revised 10 May 2007, accepted 20 July 2007</em> Few new thioscmicarbazones (2 and 3) have been synthesized by condensing 2-hydroxy-S-(substituted phenyl azo) benzaldehyde 1(i) and <em>p</em>-substituted phenyl thiosemicarbazide 1(ii) in DMSO to enhance its medicinal value. The compounds are reported along with their spectral data, antifungal and antibacterial activities.

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22

Alsamarrai, Khalaf Faris. "Spectrophotometric Determination of Metronidazole via Diazotization Reaction with p-Hydroxy Benzaldehyde as a Coupling Reagent." Research Journal of Pharmacology 6, no. 2 (2012): 25–29. http://dx.doi.org/10.3923/rjpharm.2012.25.29.

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23

Chandrasekhar, Vadapalli, Venkatasubbaiah Krishnan, Arunachalampillai Athimoolam, and Gurusamy Thangavelu Senthil Andavan. "New hybrid inorganic-organic polymers containing cyclophosphazenes as pendant groups: Cyclophosphazene ligands containing hydrazone linkages and their conversion to polymers." Canadian Journal of Chemistry 80, no. 11 (2002): 1415–20. http://dx.doi.org/10.1139/v02-099.

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The reaction of the cyclotriphosphazene N3P3Cl5[O-C6H4-p-C6H4-p-CH=CH2] (2) with 10 equiv of N-methylhydrazine proceeds in a regio-specific manner to afford the multi-functional hydrazide N3P3[N(Me)NH2]5[O- C6H4-p-C6H4-p-CH=CH2] (3). Condensation of 3 with o-hydroxy benzaldehyde or pyridine-2-carboxaldehyde affords the corresponding hydrazones N3P3[N(Me)N=CH-C6H4-o-OH]5[O-C6H4-p-C6H4-p-CH=CH2] (4) and N3P3[N(Me)N=CH-C6H4N]5[O-C6H4-p-C6H4-p-CH=CH2] (5), respectively. These hydrazones can be homopolymerized to afford polymers 6 and 7 containing multi-site coordinating cyclophosphazenes as pendan

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24

Ibrahem, Raghad Abdalrazaq, and Shetha F. N. Al Zobady. "SYNTHESIS AND CHARACTERIZATION OF NEW HETEROCYCLIC DERIVATIVES FROM 7- HYDROXY -4- METHYL COUMARIN AND STUDY ANTIOXIDANT ACTIVITY FOR SOME SYNTHETIC COMPOUNDS." Iraqi Journal of Market Research and Consumer Protection 15, no. 1 (2023): 120–31. http://dx.doi.org/10.28936/jmracpc15.1.2023.(11).

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ABSTRACT 7-Hydroxy-4-methyl coumarin(H1) compound have been synthesized by resorcinol and ethyl acetoacetate reaction. 4-methyl-2-oxo-2H-chromen-7-yl 2-chloroacetate(H2) is highly reactive compounds. It has been used as intermediate in some reactions. It has been synthesized and reacted with hydrazine hydrate to produce4-methyl-2-oxo-2H-chromen-7-yl 2-hydrazinylacetate (H3).Schiff Bases Compound (H4) is synthesized by reacting the compound (H3) with P-hydroxy benzaldehyde, then reacted(H4) with sodium azide, mercaptoacetic acid, chloroacetyl chloride and anhydrides such as (3- nitro phathalic

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Yang, Ai Mei, Hui Li, Jing Sun, Rui Wu, and Wei Jie Guo. "Chemical Constituents and Cytotoxic Activity of Gentiana farreri Balf.f." Advanced Materials Research 655-657 (January 2013): 1945–48. http://dx.doi.org/10.4028/www.scientific.net/amr.655-657.1945.

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Six compounds were isolated from Gentiana farrerii, which was used as traditonal herb medicine in the treatment of some diseases. Their structures were identified as: linoleic acid(1), dibutyl-phthalate(2), p-hydroxy benzaldehyde (3), hydroxyacetophenone (4), isoscoparin (5), 5,7,3',4'-tetrahydroxyflavone-6--D-glucopyranoside(6). All compounds were isolated from Gentiana farrerii for the first time. The cytotoxic activity on the growth of HepG-2 cells of all compounds were investigated in MTT assay, the results showed that compound 2, 5, 6 have weak cytotoxic activity, IC50 is 41.26, 96.74, 9

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Bharanidharan, S., H. Saleem, A. Nathiya, A. Arokiasamy, and V. Thanikachalam. "Spectroscopic Investigations of (E)-5-(2-Phenyldiazenyl)-2-Hydroxybenzaldehyde Using DFT Method." International Letters of Chemistry, Physics and Astronomy 60 (September 30, 2015): 168–81. http://dx.doi.org/10.56431/p-qw29cd.

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The Spectral Characterization of (E)-5-(2-phenyldiazenyl)-2-hydroxy benzaldehyde (PDHB) were carried out by using FT-IR, FT-Raman and UV-Vis spectroscopic techniques. All the recorded spectral results were compared with calculated results. The optimization has been performed on the title compound using B3LYP/6-311++G(d,p) level of theory. The optimized bond parameters of PDHB molecule was compared with X-ray diffraction data of related molecule. To study the intra-molecular charge transfers within the molecule the Lewis (bonding) and Non-Lewis (anti-bonding) structural calculation was performe

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Fathi, Anwar Abdulghani, Yassir Shakeeb Al Jawaheri, and Shaimaa Samir Ismaee. "Synthesis of some new substituted imines from aldehydes and ketones derived from quinolinic acid." Ecletica Quimica 48, no. 2 (2023): 49–65. http://dx.doi.org/10.26850/1678-4618eqj.v48.2.2023.p49-65.

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In this paper, some substituted imines compounds have been prepared from quinolinic acid as a starting material. Firstly, the quinolinic acid was treated with acetic anhydride and acetic acid to form furo[3,4-b]pyridine-5,7-dione (1); the resulting compound was heated with urea to form 5H-pyrrolo[3,4-b]pyridine-5,7(6H)-dione (2). After that, it was treated with potassium hydroxide to give potassium 5,7-dioxo-5,7-dihydropyrrolo[3,4-b]pyridin-6-dione, which was directly and easily converted to 6-(2-([1,1'-biphenyl]-4-yl)-2-oxoethyl)-5H-pyrrolo[3,4-b]pyridine-5,7(6H)-dione (3) by the reaction wit

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Journal, Baghdad Science. "Synthesis and Characterization of Some New Monemer and Polymers Containing Hetero Cyclic Rings With Study of Their Physical Properties." Baghdad Science Journal 13, no. 2 (2016): 172–80. http://dx.doi.org/10.21123/bsj.13.2.172-180.

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Number of new polyester and polyamide are prepared as derivatives from 5,5`-(1,4-phenylene)-bis-(1,3,4-thiadiazole-2-amine) [C1], three series of heterocyclic compounds were synthesized.The first series includes the Schiff base [C2] prepared from the reaction between compound [C1] with p-hydroxy benzaldehyde in presence of acetic acid and absolute ethanol , then these derivatives have reaction with maleic anhydride , phthalic anhydride and sodium azide, respectively to obtain the compounds [C3-5] contaning (oxazepine and tetrazole) rings.The third series of compounds [C1-5] has transformed to

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Xi-Shi, Tai, Meng Qing-Guo, and Liu Li-Li. "Synthesis, Crystal Structure and Spectroscopic Analysis of a New Sodium Coordination Polymer." Open Chemistry 14, no. 1 (2016): 274–78. http://dx.doi.org/10.1515/chem-2016-0031.

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AbstractA new sodium coordination polymer, [Na2(L)2(H2O)4]n(1), was synthesized by reflux reaction ofp-aminobenzene sulfonic acid,p-hydroxy benzaldehyde and NaOH in ethanol/water solution and characterized by elemental analysis, UV-vis, IR and X-ray single crystal diffraction analysis. The crystal of 1 belongs to monoclinic, space groupP21/cwitha= 17.765(4) Å,b=10.181(2) Å,c= 8.0450(16) Å,β= 91.67(3)°,V= 1454.5(5) Å3,Z= 4,Dc= 1.531 mg·,μ= 0.28 mm-1,F(000) = 696, and finalR1= 0.0327,ωR2= 0.0854. The molecules of 1 are extended to a 2D layer structure alongabplane. The 2D layers form 3D framewor

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30

Bharanidharan, S., H. Saleem, A. Nathiya, A. Arokiasamy, and V. Thanikachalam. "Spectroscopic Investigations of (E)-5-(2-Phenyldiazenyl)-2-Hydroxybenzaldehyde Using DFT Method." International Letters of Chemistry, Physics and Astronomy 60 (September 2015): 168–81. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.60.168.

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The Spectral Characterization of (E)-5-(2-phenyldiazenyl)-2-hydroxy benzaldehyde (PDHB) were carried out by using FT-IR, FT-Raman and UV-Vis spectroscopic techniques. All the recorded spectral results were compared with calculated results. The optimization has been performed on the title compound using B3LYP/6-311++G(d,p) level of theory. The optimized bond parameters of PDHB molecule was compared with X-ray diffraction data of related molecule. To study the intra-molecular charge transfers within the molecule the Lewis (bonding) and Non-Lewis (anti-bonding) structural calculation was performe

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Pelttari, Eila, Eliisa Karhumäki, Jane Langshaw, Hannu Peräkylä, and Hannu Elo. "Antimicrobial Properties of Substituted Salicylaldehydes and Related Compounds." Zeitschrift für Naturforschung C 62, no. 7-8 (2007): 487–97. http://dx.doi.org/10.1515/znc-2007-7-806.

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A systematic survey of the antimicrobial properties of substituted salicylaldehydes and some related aromatic aldehydes is reported. A total of 23 different compounds, each at four different concentrations, were studied using a panel of seven microbes (Aspergillus niger, Bacillus cereus, Candida albicans, Escherichia coli, Pseudomonas aeruginosa, Saccharomyces cerevisiae and Staphylococcus epidermidis) and employing the paper disc agar diffusion method. Several aldehydes, most notably halogenated, nitro-substituted and hydroxylated salicylaldehydes, displayed highly potent activity against the

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Ion, Emilia, Mirela Calinescu, Ana Emandi, Victoria Badea, and Dumitru Negoiu. "Copper(II) Complex Compounds with Mixed Hydrazone Ligands." Revista de Chimie 59, no. 1 (2008): 12–16. http://dx.doi.org/10.37358/rc.08.1.1697.

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Three Cu(II) complex compounds with mixed hydrazone ligands have been prepared and characterized in view of their potential biological activity. The complex compounds have the formulas: [Cu(HLa)(Lc)Br], [CuLaLc] and [CuLbLc] . Na, where HLa = 4-dimethylamino benzaldehyde-2-benzothiazolyl hydrazone, H2Lb = 2-hydroxybenzaldehyde-2-benzothiazolyl hydrazone and HLc = 2-hydroxy-1-naphthyliden-N,N-dimethyl hydrazone. The complexes have been characterized by elemental and thermogravimetrical analysis, infrared, electronic and EPR spectra. EPR spectral studies of the complexes gave axial symmetry, wit

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Minyaev, Mikhail E., Dmitrii M. Roitershtein, Ilya E. Nifant'ev, Ivan V. Ananyev, Tatyana V. Minyaeva, and Timofey A. Mikhaylyev. "A structural study of (1RS,2SR,3RS,4SR,5RS)-2,4-dibenzoyl-1,3,5-triphenylcyclohexan-1-ol chloroform hemisolvate and (1RS,2SR,3RS,4SR,5RS)-2,4-dibenzoyl-1-phenyl-3,5-bis(2-methoxyphenyl)cyclohexan-1-ol." Acta Crystallographica Section C Structural Chemistry 71, no. 6 (2015): 491–98. http://dx.doi.org/10.1107/s2053229615009857.

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(1RS,2SR,3RS,4SR,5RS)-2,4-Dibenzoyl-1,3,5-triphenylcyclohexan-1-ol or (4-hydroxy-2,4,6-triphenylcyclohexane-1,3-diyl)bis(phenylmethanone), C38H32O3, (1), is formed as a by-product in the NaOH-catalyzed synthesis of 1,3,5-triphenylpentane-1,5-dione from acetophenone and benzaldehyde. Single crystals of the chloroform hemisolvate, C38H32O3·0.5CHCl3, were grown from chloroform. The structure has triclinic (P-1) symmetry. One diastereomer [as a pair of (1RS,2SR,3RS,4SR,5RS)-enantiomers] of (1) has been found in the crystal structure and confirmed by NMR studies. The dichoromethane hemisolvate has

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Li, Yehong, Yiming Zhang, Zejun Zhang, Yupiao Hu, Xiuming Cui, and Yin Xiong. "Quality Evaluation of Gastrodia Elata Tubers Based on HPLC Fingerprint Analyses and Quantitative Analysis of Multi-Components by Single Marker." Molecules 24, no. 8 (2019): 1521. http://dx.doi.org/10.3390/molecules24081521.

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Gastrodia elata (G. elata) tuber is a valuable herbal medicine used to treat many diseases. The procedure of establishing a reasonable and feasible quality assessment method for G. elata tuber is important to ensure its clinical safety and efficacy. In this research, an effective and comprehensive evaluation method for assessing the quality of G. elata has been developed, based on the analysis of high performance liquid chromatography (HPLC) fingerprint, combined with the quantitative analysis of multi-components by single marker (QAMS) method. The contents of the seven components, including g

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Kumar, Gajendra, Dharmendra Kumar, C. P. Singh, Amit Kumar, and V. B. Rana. "Synthesis, physical characterization and antimicrobial activity of trivalent metal Shiff base complexes." Journal of the Serbian Chemical Society 75, no. 5 (2010): 629–37. http://dx.doi.org/10.2298/jsc090704037k.

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M(III) complexes of Cr, Mn and Fe with a Schiff base derived from 2-amino-4-ethyl-5-hydroxy benzaldehyde and thiocarbohydrazide were synthesized and characterized by several techniques, including elemental analysis (C,H,N), molar conductance measurements, magnetic measurements, and electronic, mass and IR spectral studies. Based on these studies, a fivecoordinated square pyramidal geometry for all the complexes was proposed. The Schiff base ligand and the complexes were also tested for their antimicrobial activity (against the bacteria Escherichia coli, Staphylococcus aureus, Pseudomonas aerug

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Cinar, Emine Berrin, Md Serajul Haque Faizi, Nermin Kahveci Yagci, et al. "Crystal structure, Hirshfeld surface analysis and DFT studies of (E)-4-methyl-2-{[(2-methyl-3-nitrophenyl)imino]methyl}phenol." Acta Crystallographica Section E Crystallographic Communications 76, no. 10 (2020): 1551–56. http://dx.doi.org/10.1107/s2056989020011652.

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The title compound, C15H14N2O3, was prepared by condensation of 2-hydroxy-5-methyl-benzaldehyde and 2-methyl-3-nitro-phenylamine in ethanol. The configuration of the C=N bond is E. An intramolecular O—H...N hydrogen bond is present, forming an S(6) ring motif and inducing the phenol ring and the Schiff base to be nearly coplanar [C—C—N—C torsion angle of 178.53 (13)°]. In the crystal, molecules are linked by C—H...O interactions, forming chains along the b-axis direction. The Hirshfeld surface analysis indicates that the most important contributions to the crystal packing are from H...H (37.2%

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Jumina, Jumina, Dwi Siswanta, Abdul Karim Zulkarnain, et al. "Development of C-Arylcalix[4]resorcinarenes and C-Arylcalix[4]pyrogallolarenes as Antioxidant and UV-B Protector." Indonesian Journal of Chemistry 19, no. 2 (2019): 273. http://dx.doi.org/10.22146/ijc.26868.

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Indonesia is rich with essential oils such as anise and clove leave oils. In respect to explore the potential utilization of these resources, it has been conducted the transformation of p-hydroxybenzaldehyde and vanillin (4-hydroxy-3-methoxy benzaldehyde) respectively derived from anise oil and clove leaves oil to a series of C-arylcalix[4]resorcinarenes and C-arylcalix[4]pyrogallolarene macrocycles. Treatment of these aldehydes with resorcinol in the presence of HCl in absolute ethanol at reflux for 8 h afforded C-4-hydroxyphenylcalix[4]resorcinarene (3a) and C-4-hydroxy-3-methoxy phenyl-cali

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Mazhar, Noreen, Mehwish Aftab, Tariq Mahmud, Muhammadasim Raza Basra, Mansoor Akhtar, and Liviu Mitu. "Synthesis, Characterization and Biological Evaluation of New Schiff Base Ligand derived from 3-hydroxy-benzaldehyde and p-toluidine and its Divalent Metal Ions." Revista de Chimie 71, no. 4 (2020): 47–58. http://dx.doi.org/10.37358/rc.20.4.8042.

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A new Schiff base ligand (L) and its transition divalent metal complexes were prepared by the condensation reaction; Reaction was carried out at 70-80 oC by refluxing equimolar ratio of toluidine and aldehyde by continuous stirring for 5-6 hours. Synthesized ligand and Ni(II), Fe(II), Co(II), Mn(II) and Zn(II) bimetallic complexes were characterized by using FT-IR, UV-visible spectroscopy, AAS, Single crystal X-ray analysis, 1H-NMR, molar conductance. Compounds were screened against two fungus Candida glabrata and Candida albicans by agar tube dilution protocol. In vivo anti-inflammatory activ

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Mandal, Swagata, Sangita Mandal, Satyajit Biswas, and Bidyut Saha. "Synthesis of 4-Hydroxy-4-(4-nitrophenyl)butan-2-one using p-Nitro Benzaldehyde and Acetone in Aqueous Micellar Media using L-Proline." Tenside Surfactants Detergents 55, no. 4 (2018): 325–30. http://dx.doi.org/10.3139/113.110566.

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Gâz-Florea, Șerban Andrei, Eleonora Mircia, and Lavinia Berţa. "Research Article. Precursor Synthesis of Some New Macrocyclic Compounds." Acta Medica Marisiensis 63, no. 1 (2017): 27–30. http://dx.doi.org/10.1515/amma-2017-0005.

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Abstract Objective: Development of new electronic devices with applications in computer science as well as new medical devices pushed the researcher to find new technologies. Based on those new techniques we have designed and synthesized compounds with possible application in the field of advanced materials. Material and method: Compounds were analyzed by TLC and NMR. Routine 1H NMR (250 MHz) spectra were recorded at room temperature in deuterated acetone, unless stated otherwise. Thin-layer chromatography (TLC) was carried out on aluminum sheets coated with silicagel 60 F254 Merck TLC plates.

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Su, Wenting, Weihua Ma, Qi Zhang, et al. "Honey Bee Foraging Decisions Influenced by Pear Volatiles." Agriculture 12, no. 8 (2022): 1074. http://dx.doi.org/10.3390/agriculture12081074.

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The interactions between plants and pollinators are complex. Flower volatiles as special olfactory cues could influence the foraging choices of pollinators. Here, we conducted bioassays to evaluate the role of flower volatiles on the attraction of honey bees (native Apis cerana and exotic Apis mellifera) to pears (native Pyrus bretschneideri and exotic Pyrus communis). Chemical and electrophysiological approaches were used to determine flower volatiles and evaluate the antennal responses of honey bees to volatiles from pear flowers. Bioassays demonstrated that flower volatiles were crucial for

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Kumari, Sumita, Amit Sharma, and Sonia Yadav. "Novel coumarin chalcone derivatives: synthesis, docking, and antimicrobial evaluation." Journal of Applied Pharmaceutical Research 13, no. 1 (2025): 62–74. https://doi.org/10.69857/joapr.v13i1.838.

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Background: This study synthesized and evaluated a series of coumarin chalcones for their antimicrobial efficacy against microbial and fungal strains. Methodology: Ten new coumarin chalcones were prepared by Claisen- Schmidt condensation by using 4-hydroxy coumarin as a precursor and followed by refluxing obtained intermediate (3-(4-aminophenyl)-3-oxo prop-1-enyl)-4-hydroxy-2H-chromen-one) with substituted aromatic benzaldehyde in the presence of piperidine as a catalyst. IR, 1HNMR, 13CNMR, and GCMS characterized all synthesized compounds. The agar well diffusion method assessed these compound

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43

Huang, Shan, Xiao Hou, Jiaojiao Li, Xiujuan Tian, Qing Yu, and Zhongwei Wang. "A novel curing agent based on diphenylphosphine oxide for flame-retardant epoxy resin." High Performance Polymers 30, no. 10 (2017): 1229–39. http://dx.doi.org/10.1177/0954008317745957.

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A phosphorous/nitrogen-containing diphenylphosphine oxide (DPO) derivative (DPO-SS) was designed and synthesized via a two-step reaction of 4,4′-diaminodiphenylsulfone, 2-hydroxy-benzaldehyde, and DPO. The structure of DPO-SS was confirmed by Fourier transform infrared spectroscopy (FTIR), 1H and 31P nuclear magnetic resonance (NMR) spectroscopy, and mass spectrometry (MS). DPO-SS was used as a flame retardant and curing agent for copolymerizing with diglycidyl ether of bisphenol-A. Thermal and flame-retardant properties of the obtained flame-retardant epoxy resin (F-EP) were investigated by t

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Oladimeji, Olawale Hakeem. "A Cycloalkanol from Derivatization Studies on Vanillin: Evaluation of Antioxidant Activity of Obtained Derivatives." Journal of Pharmaceutical Research Science & Technology 6, no. 1 (2022): 17–25. http://dx.doi.org/10.31531/jprst.1000157.

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Background: Vanillin is a white monoclinic crystalline compound whose chemical nomenclature is p-hydroxy-m-methoxy benzaldehyde. It is a phenolic aldehyde with a pleasant flavor and popularly found in vanilla beans and roasted coffee amongst many other sources. It serves as in addition; it possesses antitumor and particularly antioxidant activity which formed the essence of this study. Objectives: The insidious presence of free oxygenated and nitrogen radicals in the human body has become a worrisome concern. These chemical species continue to plague the human cells, tissues and organs resulti

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Oladimeji, OH Idiong ES Joseph UA et al. "A Cycloalkanol from Derivatization Studies on Vanillin: Evaluation of Antioxidant Activity of Obtained Derivatives." Journal of Pharmaceutical Research Science & Technology 6, no. 1 (2022): 17–25. https://doi.org/10.31531/jprst.1000157.

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Background: Vanillin is a white monoclinic crystalline compound whose chemical nomenclature is p-hydroxy-m-methoxy benzaldehyde. It is a phenolic aldehyde with a pleasant flavor and popularly found in vanilla beans and roasted coffee amongst many other sources. It serves as in addition; it possesses antitumor and particularly antioxidant activity which formed the essence of this study.  Objectives: The insidious presence of free oxygenated and nitrogen radicals in the human body has become a worrisome concern. These chemical species continue to plague the human cells, tissues and organs r

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46

Li, Yang, Chenxi Guang, Na Zhao, Xinchi Feng, and Feng Qiu. "LC–MS/MS Method for Simultaneous Determination of Linarin and Its Metabolites in Rat Plasma and Liver Tissue Samples: Application to Pharmacokinetic and Liver Tissue Distribution Study After Oral Administration of Linarin." Molecules 24, no. 18 (2019): 3342. http://dx.doi.org/10.3390/molecules24183342.

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Linarin, a flavone glycoside, is considered to be a promising natural product due to its diverse pharmacological activities. Recently, it has been brought into focus for its potential to treat liver failure. In this study, a rapid and sensitive liquid chromatography electrospray-ionization tandem mass spectrometry (LC–MS/MS) method was developed and validated for the simultaneous determination of linarin and its three metabolites (acacetin, apigenin, and p-hydroxy benzaldehyde) in plasma and liver tissue samples of normal rats and rats with d-galactosamine (d-GalN)-induced liver injury. After

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Fu, Chenying, Yiming Zou, Yixiang Zhang, Mengxiang Liao, Duhuang Chen, and Zebin Guo. "Comparison of Different Deodorizing Treatments on the Flavor of Paddy Field Carp, Analyzed by the E-Nose, E-Tongue and Gas Chromatography–Ion Mobility Spectrometry." Foods 13, no. 16 (2024): 2623. http://dx.doi.org/10.3390/foods13162623.

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Changes in the flavor and taste profiles of Paddy Field Carp after deodorization with perilla juice (PJ), cooking wine (CW) and a mixture of the two (PJ-CW) were analyzed using the E-nose, E-tongue, gas chromatography–ion mobility spectrometry (GC-IMS), free amino acid analysis and taste nucleotide analysis. The E-nose and E-tongue revealed that deodorization reduced the content of sulfur-containing compounds, enhanced umami, bitterness, sourness and astringency, and decreased saltiness. PCA and OPLS-DA analysis successfully distinguished between the effects of the treatments. Free amino acids

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Handayani, Sri, Sunarto, Sunarto,, and Susila Kristianingrum. "OPTIMIZATION OF TIME REACTION AND HYDROXIDE ION CONCENTRATION ON FLAVONOID SYNTHESIS FROM BENZALDEHYDE AND ITS DERIVATIVES." Indonesian Journal of Chemistry 5, no. 2 (2010): 163–68. http://dx.doi.org/10.22146/ijc.21825.

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The aim of this research is to determine the optimum time of reaction and concentration of hydroxide ion on chalcone, 4-methoxychalcone and 3,4-dimethoxychalcone synthesis. Chalcone and its derivatives were synthesized by dissolving KOH in ethanol followed by dropwise addition of acetophenone and benzaldehyde. Then, the mixture was stirred for several hours. Three benzaldehydes has been used, i.e : benzaldehyde, p-anysaldehyde and veratraldehyde. The time of reaction was varied for, 12, 18, 24, 30 and 36 hours. Furthermore, on the optimum reaction time for each benzaldehyde the hydroxyl ion co

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Rakesh, Samikannu, and Muthusamy Sarojadevi. "Synthesis and characterization of cyanate ester and its blends with bisphenol dicyanate ester." Chemistry & Chemical Technology 2, no. 4 (2008): 239–47. http://dx.doi.org/10.23939/chcht02.04.239.

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A new keto-ene functionalized 1, 5-bis (4-hydroxyphenyl)penta-1,4-dien-3-one (HPDO) was prepared from p-hydroxy benzaldehyde and acetone using boric acid as a catalyst. The prepared bisphenol was converted into 1,5-bis (4-cyanatophenyl) penta-1,4-diene-3-one (CPDO) by reacting with cyanogen bromide (CNBr) in the presence of triethylamine. The synthesized bisphenol and the dicyanate ester were characterized by Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance spectroscopy (1H-NMR and 13C-NMR) and elemental analysis (EA) techniques. CPDO was then blended with a commerci

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Alim, Mohammad Abdul, Md Abul Bashar, Partha Sarathi Roy, et al. "Synthesis, Physical, Spectral Characterization and Biological Studies of the complexes of Ni2+, Cu2+, Co2+ and Cd2+ions with Schiff Base Derived from p-hydroxybenzaldehyde and o-Phenyl-diamine." Oriental Journal Of Chemistry 40, no. 5 (2024): 1449–59. http://dx.doi.org/10.13005/ojc/400528.

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Together, ortho (o)-phenyldiamine and para (p)-hydroxy benzaldehyde generate a Schiff base (SB). In order to make transition metal complexes of Ni2+, Cu2+, Co2+ and Cd2+ ions, this Schiff base (SB) was employed as a ligand of choice. The generated transition metal complexes' chemical structure is examined using a variety of physical methods, such as fundamental analysis, conductivity (molar), susceptibility (magnetic), spectroscopy (IR), and electronic spin spectroscopy. According to the elemental data analysis, a 1:2 [M:2L] complex of the formula, is produced ( M2+ = Ni2+, Cu2+, Co2+ and Cd2+

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