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Journal articles on the topic '3-hydroxybenzaldehyde'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Li, Jing, Suan Shi, Sushil Adhikari, and Maobing Tu. "Inhibition effect of aromatic aldehydes on butanol fermentation by Clostridium acetobutylicum." RSC Advances 7, no. 3 (2017): 1241–50. http://dx.doi.org/10.1039/c6ra25706b.

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2

Paixão, J. A., A. Matos Beja, M. Ramos Silva, L. Alte da Veiga, and A. C. Serra. "3-Hydroxybenzaldehyde." Acta Crystallographica Section C Crystal Structure Communications 56, no. 11 (2000): 1348–50. http://dx.doi.org/10.1107/s0108270100010441.

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3

Li, Yong, Xinxi Zhang, Jun Zheng, and Xiaoling Wang. "3-Ethoxy-4-hydroxybenzaldehyde." Acta Crystallographica Section E Structure Reports Online 64, no. 10 (2008): o2008. http://dx.doi.org/10.1107/s1600536808030419.

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4

Metlay, Jessica B., and Joseph M. Tanski. "3-Bromo-2-hydroxybenzaldehyde." Acta Crystallographica Section E Structure Reports Online 68, no. 8 (2012): o2484. http://dx.doi.org/10.1107/s1600536812031510.

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The molecule of the title compound, C7H5BrO2, is almost planar (r.m.s. deviation from the plane of all the non-H atoms = 0.0271 Å) and displays intramolecular O—H...O hydrogen bonding between the phenol group and the aldehyde O atom. Packing is directed by weak intermolecular C—H...Br interactions and π-stacking between nearly parallel molecules [dihedral angle = 5.30 (6)° and centroid–centroid distance = 3.752 (1) Å].

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5

Fu, Wei-Wei. "3-Chloromethyl-2-hydroxybenzaldehyde." Acta Crystallographica Section E Structure Reports Online 68, no. 10 (2012): o2928. http://dx.doi.org/10.1107/s1600536812038421.

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6

van Otterlo, Willem A. L., Joseph P. Michael, Manuel A. Fernandes, and Charles B. de Koning. "Unforeseen formation of 2-bromo-3-hydroxybenzaldehyde by bromination of 3-hydroxybenzaldehyde." Tetrahedron Letters 45, no. 26 (2004): 5091–94. http://dx.doi.org/10.1016/j.tetlet.2004.04.174.

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7

Sychyeva, Ye S., and M. S. Mukanova. "SYNTHESIS AND CHEMICAL MODIFICATION OF NEW HYDROXYBEZALDEHYDE DERIVATIVES." Chemical Journal of Kazakhstan, no. 3 (September 15, 2023): 127–36. http://dx.doi.org/10.51580/2023-3.2710-1185.34.

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A high pharmacological ability of aromatic benzaldehydes makes them important intermediates for the synthesis of medicinal preparations, such as anticancer, bactericidal, antifungal, and herbicidal drugs. The purpose of this work is the synthesis of biologically active compounds, based on 4-hydroxybenzaldehyde and 4-hydroxy-3-methoxybenzaldehyde and the establishment of the structure of the synthesized compounds. Results and discussion. New carbonodithioates, based on O-aromatic systems have been synthesized by the interaction of 4-hydroxybenzaldehyde and 4-hydroxy-3-methoxybenzaldehyde with c

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8

Nowak, Patryk, and Artur Sikorski. "Structural diversity of cocrystals formed from acridine and two isomers of hydroxybenzaldehyde: 3-hydroxybenzaldehyde and 4-hydroxybenzaldehyde." RSC Advances 13, no. 29 (2023): 20105–12. http://dx.doi.org/10.1039/d3ra02300a.

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Based on experiments carried out using SCXRD, FTIR, and TG/DSC methods, it was demonstrated that acridine forms cocrystals with two isomers of hydroxybenzaldehyde: 3-hydroxybenzaldehyde and 4-hydroxybenzaldehyde in a molar ratio of 1 : 1.

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9

Ribeiro da Silva, Maria D. M. C., Mariana V. Gonçalves, and Manuel J. S. Monte. "Thermodynamic study on hydroxybenzaldehyde derivatives: 3- and 4-Hydroxybenzaldehyde isomers and 3,5-di-tert-butyl-2-hydroxybenzaldehyde." Journal of Chemical Thermodynamics 42, no. 4 (2010): 472–77. http://dx.doi.org/10.1016/j.jct.2009.10.009.

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10

Tran, Hieu Quang, Hien Cao Nguyen, Thin Van Nguyen, Thanh Thi Nguyen, Toan Ngoc Vo, and Cong Tien Nguyend. "Synthesis and Evaluation of Cytotoxic Activity on Mcf-7 Cell Line of Some Diesters Derived from 5-(Hydroxybenzylidene)Thiazolidine-2,4-Diones." Acta Chemica Iasi 26, no. 2 (2018): 233–48. http://dx.doi.org/10.2478/achi-2018-0015.

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Abstract Knoevenagel condensation of thiazolidine-2,4-dione, which were prepared from chloroacetic acid and thioure by 1,3 dipolar cycloaddition reaction, with 2-hydroxybenzaldehyde, 5-bromo-2-hydroxybenzaldehyde, 3-hydroxybenzaldehyde, 4-hydroxybenzaldehyde and 4-hydoxy-3-methoxybezaldehyde gave five corresponding 5-(hydroxybenzylidene)thiazolidine-2,4-dione compounds. The reaction of 5-(hydroxybenzylidene)thiazolidine-2,4-diones and ethyl chlorofomate or ethyl chloroacetate occurred at both NH and OH centers and gave ten corresponding diesters. The structures of the diesters were confirmed b

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11

Balasubramani, V., T. Vinuchakkaravarthy, Sreeraj Gopi, S. Narasimhan, and D. Velmurugan. "3-Bromo-5-tert-butyl-2-hydroxybenzaldehyde." Acta Crystallographica Section E Structure Reports Online 67, no. 12 (2011): o3375. http://dx.doi.org/10.1107/s1600536811048847.

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12

Hafeez, Abdul, Zareen Akhter, John F. Gallagher, Nawazish Ali Khan, Asghari Gul, and Faiz Ullah Shah. "Synthesis, Crystal Structures, and Spectroscopic Characterization of Bis-aldehyde Monomers and Their Electrically Conductive Pristine Polyazomethines." Polymers 11, no. 9 (2019): 1498. http://dx.doi.org/10.3390/polym11091498.

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Bis-aldehyde monomers 4-(4′-formyl-phenoxy)benzaldehyde (3a), 3-methoxy-4-(4′-formyl-phenoxy)benzaldehyde (3b), and 3-ethoxy-4-(4′-formyl-phenoxy)benzaldehyde (3c) were synthesized by etherification of 4-fluorobenzaldehyde (1) with 4-hydroxybenzaldehyde (2a), 3-methoxy-4-hydroxybenzaldehyde (2b), and 3-ethoxy-4-hydroxybenzaldehyde (2c), respectively. Each monomer was polymerized with p-phenylenediamine and 4,4′-diaminodiphenyl ether to yield six poly(azomethine)s. Single crystal X-ray diffraction structures of 3b and 3c were determined. The structural characterization of the monomers and poly(

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13

Yildiz, Mustafa, Aşkin Kĺraz, and Başaran Dülger. "Synthesis and antimicrobial activity of new crown ethers of Schiff base type." Journal of the Serbian Chemical Society 72, no. 3 (2007): 215–24. http://dx.doi.org/10.2298/jsc0703215y.

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New crown ether ligands of the Schiff base type (4a-d) were synthesized by the reaction of 2-hydroxybenzaldehyde, 3-hydroxybenzaldehyde, 4-hydroxybenzaldehyde and 2-hydroxy-1-naphthaldehyde with 6,7-dihydro-13H-dibenzo [e,h] [1,4]dioxonin-2,11-diamine (3). The structures of ligands were investigated by elemental analysis as well as IR, UV-visible, 1H-NMR, 13C-NMR and MS spectroscopic data. The antimicrobial and anti-yeast activities of the ligands were screened in vitro against the organisms Escherichia coli ATCC 11230, Staphylococcus aureus ATCC 6538, Klebsiella pneumoniae UC57, Micrococcus l

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14

Wang, Li-Hua, Fan-Yuan Kong, and Xi-Shi Tai. "Crystal Structure and Catalytic Activity of Poly[bis(3-bromo-2-hydroxybenzaldehyde)-2-aminopyrimidinemagnesium(II)] for Hydrogenation of 1,3-Butadiene." Bulletin of Chemical Reaction Engineering & Catalysis 16, no. 2 (2021): 260–66. http://dx.doi.org/10.9767/bcrec.16.2.10421.260-266.

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A new six-coordinated Mn(II) coordination polymer, [Mn(L1)(L2)2]n (L1 = 2-aminopyrimidine, HL2 = 3-bromo-2-hydroxybenzaldehyde) was synthesized by 3-bromo-2-hydroxybenzaldehyde, NaOH, 2-aminopyrimidine and manganese(II) acetate dihydrate. The Mn(II) coordination polymer was structural characterized by elemental analysis and single crystal X-ray diffraction. The results show that each Mn(II) ion is six-coordinated with two phenolic hydroxyl O atoms from two 3-bromo-2-hydroxybenzaldehyde ligands (O1 and O4), two formyl group O atoms from two 3-bromo-2-hydroxybenzaldehyde ligands (O2 and O3), and

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15

Berzas Nevado, J. J., C. Guiberteau Cabanillas, and F. Salinas López. "First Derivative of the Ratio Spectra Method for Resolving 3-Hydroxybenzaldehyde and 4-Hydroxybenzaldehyde in Binary Mixtures." Bulletin des Sociétés Chimiques Belges 100, no. 1 (2010): 79–91. http://dx.doi.org/10.1002/bscb.19911000112.

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16

Zhao, Lin-xiu, Jian-lan Cui, and Duan-lin Cao. "3-Ethoxy-2-hydroxybenzaldehyde 2,4-dinitrophenylhydrazoneN,N-dimethylformamide monosolvate." Acta Crystallographica Section E Structure Reports Online 66, no. 9 (2010): o2205. http://dx.doi.org/10.1107/s1600536810029983.

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17

Yenagi, Jayashree, Nandini V. Arlikatti, and J. Tonannavar. "Hydrogen bond, dimerization and vibrational modes in 2-chloro-3-hydroxybenzaldehyde and 3-chloro-4-hydroxybenzaldehyde from vibrational and ab initio studies." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 77, no. 5 (2010): 1025–33. http://dx.doi.org/10.1016/j.saa.2010.08.062.

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18

Wu, Hao, Jing Zhu, Yiwei Wang, Chengwei Chang, and Junsu Jin. "Measurement and modeling for solubility of 3-hydroxybenzaldehyde and its mixture with 4-hydroxybenzaldehyde in supercritical carbon dioxide." Fluid Phase Equilibria 409 (February 2016): 271–79. http://dx.doi.org/10.1016/j.fluid.2015.10.012.

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19

H. Al-Hazmi, Ghaferah. "Design, synthesis, and cytotoxic activity of some novel N-(substituted) benzamide derivatives bearing coumarin and 1-azocoumarin compounds." Bulletin of the Chemical Society of Ethiopia 37, no. 4 (2023): 1003–19. http://dx.doi.org/10.4314/bcse.v37i4.16.

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ABSTRACT. Among oxygen-containing heterocyclic compounds such as coumarin and azacoumarin derivatives, the scaffold has become an important construction motif for developing new drugs. Coumarin and its derivatives possess many types of biological activities and have been reported to show significant cytotoxic activity. N-(6,8-disubstituted coumarin-3-yl)benzamides (8a-c) namely (3-N-(benzoyl) aminocoumarin-6-ylmethyl acetate (8a); N-[6-(1-acetylpyrazol-3-yldiazineyl) coumarin-3-yl] benzamide (8b); N-(8-methoxy-6-bromo-coumarin-3-yl) benzamide (8c), were synthesized via a cyclocondensation reac

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20

Koyuncu, Hülya. "Adsorption kinetics of 3-hydroxybenzaldehyde on native and activated bentonite." Applied Clay Science 38, no. 3-4 (2008): 279–87. http://dx.doi.org/10.1016/j.clay.2007.03.010.

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21

Flakus, Henryk T., and Barbara Hachuła. "Effects of dynamical couplings in hydrogen bond systems in the polarized IR spectra of 3-hydroxybenzaldehyde and 4-hydroxybenzaldehyde crystals." Chemical Physics 368, no. 3 (2010): 133–45. http://dx.doi.org/10.1016/j.chemphys.2010.01.024.

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22

Nevado, J. J. Berzas, C. Guiberteau Cabanillas, and F. Salinas. "Spectrophotometric resolution of ternary mixtures of salicylaldehyde, 3-hydroxybenzaldehyde and 4-hydroxybenzaldehyde by the derivative ratio spectrum-zero crossing method." Talanta 39, no. 5 (1992): 547–53. http://dx.doi.org/10.1016/0039-9140(92)80179-h.

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23

Shaheen, Muhammad Ashraf, M. Nawaz Tahir, Rana Muhammad Irfan, Shahid Iqbal, and Mahreen Zaneb. "2-[(E)-N-(Adamantan-1-yl)carboximidoyl]-6-ethoxyphenol." Acta Crystallographica Section E Structure Reports Online 68, no. 8 (2012): o2588. http://dx.doi.org/10.1107/s1600536812033594.

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In the title compound, C19H25NO2, the 3-ethoxy-2-hydroxybenzaldehyde group is almost planar (r.m.s. deviation = 0.029 Å). An intramolecular O—H...N hydrogen bond generates anS(6) ring. There are no intermolecular hydrogen bonds.

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24

Kang, Nalae, Seong-Yeong Heo, Seon-Heui Cha, Ginnae Ahn, and Soo-Jin Heo. "In Silico Virtual Screening of Marine Aldehyde Derivatives from Seaweeds against SARS-CoV-2." Marine Drugs 20, no. 6 (2022): 399. http://dx.doi.org/10.3390/md20060399.

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Coronavirus disease 2019, caused by the outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is an ongoing global pandemic that poses an unprecedented threat to the global economy and human health. Several potent inhibitors targeting SARS-CoV-2 have been published; however, most of them have failed in clinical trials. This study aimed to assess the therapeutic compounds among aldehyde derivatives from seaweeds as potential SARS-CoV-2 inhibitors using a computer simulation protocol. The absorption, distribution, metabolism, excretion, and toxicity (ADME/Tox) properties of t

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25

Kong, Byung Soo, Soo Jung Im, Yang Jong Lee, et al. "Vasculoprotective Effects of 3-Hydroxybenzaldehyde against VSMCs Proliferation and ECs Inflammation." PLOS ONE 11, no. 3 (2016): e0149394. http://dx.doi.org/10.1371/journal.pone.0149394.

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26

Kato, Masahiro, Daisuke Kodama, Takeshi Ono, Hisako Serizawa, and Chiaki Yaginuma. "Vapor−Liquid Equilibrium Behaviors of 3-Ethoxy-4-hydroxybenzaldehyde in Alcohol." Journal of Chemical & Engineering Data 52, no. 5 (2007): 2094–95. http://dx.doi.org/10.1021/je700316s.

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27

Itoh, Takao. "Phosphorescence emission and excited states of 3- and 4-hydroxybenzaldehyde vapors." Journal of Molecular Spectroscopy 295 (January 2014): 26–30. http://dx.doi.org/10.1016/j.jms.2013.11.002.

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28

Jolivet-Dalmazzone, Christine, Pierre Guigon, Jean-François Large, and Danièle Clausse. "Solid-Phase Nucleation of Bulk and Dispersed 3-Methoxy-4-hydroxybenzaldehyde." Industrial & Engineering Chemistry Research 36, no. 3 (1997): 874–80. http://dx.doi.org/10.1021/ie960348w.

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29

Dauchy, Maxime, Michel Ferreira, Jérôme Leblond та ін. "New water-soluble Schiff base ligands based on β-cyclodextrin for aqueous biphasic hydroformylation reaction". Pure and Applied Chemistry 90, № 5 (2018): 845–55. http://dx.doi.org/10.1515/pac-2017-1205.

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Abstract The synthesis of water-soluble rhodium(I) salicylaldiminato and salicylhydrazonic complexes has been achieved employing two preparative routes. Schiff base condensation between 6A-deoxy-6A-amino-β-CD or 6A-deoxy-6A-hydrazino-β-CD and 5-sodiosulfonato-2-hydroxybenzaldehyde (sulfonated salicylaldehyde) (1) or 5-sodiosulfonato-3-tert-butyl-2-hydroxybenzaldehyde (sulfonated tBu-salicylaldehyde) (2) led to the formation of the corresponding imine or hydrazone ligands (3, 4, 5 and 6). Reaction of [Rh(COD)2+BF4−] with these new ligands in an alkaline solution formed the corresponding rhodium

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30

Wang, Yan Yan, Chang Zheng Zheng, Liang Wang, and Lei Xu. "Synthesis, Crystal Structure and Antibacterial Activity of 4-Hydroxy-Benzaldehyde Benzoyl Hydrazone." Advanced Materials Research 893 (February 2014): 3–6. http://dx.doi.org/10.4028/www.scientific.net/amr.893.3.

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A new aroylhydrazone compound of 4-hydroxybenzaldehyde benzoyl hydrazone was synthesized through the condensation of 4-hydroxybenzaldehyde and benzoyl hydrazine. The crystal structure was determined by single-crystal X-ray diffraction. It crystallizes in the orthorhombic system, space group Pbca with a=1.5514(3) nm, b=0.9318(16) nm, c=2.2921(4)nm, β=90.00o, Z=8, V=3.3137(10)nm3. Its crystal structure was determined and refined to a final R=0.0567 for 2725 independent reflections. The intermolecular hydrogen bonding interactions, C-O...N and O-H...O-C, connect the molecules into a layered netwo

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31

Hiwase, V. V., A. B. Kalambe, K. M. Khedkar, and S. D. Deosarkar. "Ion Exchange Properties of Resins Derived fromp-Hydroxybenzaldehyde, Resorcinol and Formaldehyde." E-Journal of Chemistry 7, no. 1 (2010): 287–94. http://dx.doi.org/10.1155/2010/830484.

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The terpolymeric resins were prepared by base catalyzed polycondensation ofp-hydroxybenzaldehyde, resorcinol and formaldehyde. Resin obtained by molar monomer composition,p-hydroxybenzaldehyde: resorcinol: formaldehyde as 1:1:3 was abbreviated as PHBRF-I and that prepared by 1:2:4 composition was abbreviated as PHBRF-II. These resins were characterized by physicochemical methods such as elemental analysis, UV-Vis, IR and NMR. ion-exchange study was carried out with Cu2+, Zn2+, Ni2+, Co2+, Pb2+& Cd2+by batch equilibrium method. The rate of metal ion uptake by PHBRF-II terpolymeric resin was

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32

Feuillastre, Sophie, Ludovic Raffier, Béatrice Pelotier, and Olivier Piva. "Formal enantioselective synthesis of nhatrangin A." Organic & Biomolecular Chemistry 18, no. 10 (2020): 1949–56. http://dx.doi.org/10.1039/c9ob02639h.

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A new and straightforward synthesis of the C<sub>1</sub>–C<sub>7</sub> core fragment of nhatrangin A was achieved in 14 steps from achiral 3-hydroxybenzaldehyde, without the need of chiral reagents or enzymatic resolution to introduce the chiral centers.

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33

Peng, Qingyun, Weihao Chen, Xiuping Lin, Jiao Xiao, Yonghong Liu, and Xuefeng Zhou. "Butenolides from the Coral-Derived Fungus Aspergillius terreus SCSIO41404." Marine Drugs 20, no. 3 (2022): 212. http://dx.doi.org/10.3390/md20030212.

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Five undescribed butenolides including two pairs of enantiomers, (+)-asperteretal G (1a), (−)-asperteretal G (1b), (+)-asperteretal H (2a), (−)-asperteretal H (2b), asperteretal I (3), and para-hydroxybenzaldehyde derivative, (S)-3-(2,3-dihydroxy-3-methylbutyl)-4-hydroxybenzaldehyde (14), were isolated together with ten previously reported butenolides 4–13, from the coral-derived fungus Aspergillus terreus SCSIO41404. Enantiomers 1a/1b and 2a/2b were successfully purified by high performance liquid chromatography (HPLC) using a chiral column, and the enantiomers 1a and 1b were new natural prod

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34

Valarmathy, G., R. Subbalakshmi, B. Sabarika, and C. Nisha. "Schiff bases derived from 4-amino-N-substituted benzenesulfonamide: synthesis, spectral characterisation and MIC evaluation." Bulletin of the Chemical Society of Ethiopia 35, no. 2 (2021): 435–48. http://dx.doi.org/10.4314/bcse.v35i2.16.

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ABSTRACT. The present study is aimed to synthesise Schiff bases from sulfathiazole/ sulfamethoxazole/ sulfadimidine with 2-hydroxybenzaldehyde. The synthesized Schiff bases were characterized by analytical data, IR, 1H-NMR, 13C-NMR, UV-Vis spectra, mass spectra and screened for antibacterial activity against gram positive bacteria Staphylococcus aureus and gram negative bacteria Salmonella typhiand antifungal activity against Candida albicans and Mucor by disc diffusion method. Zone of inhibition indicated that the Schiff base possessed highly potent antimicrobial activity when compared to sul

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35

Triggs, Christopher T., and Joseph M. Tanski. "Crystallographic and spectroscopic characterization of 3-chloro-5-fluorosalicylaldehyde." Acta Crystallographica Section E Crystallographic Communications 76, no. 12 (2020): 1810–12. http://dx.doi.org/10.1107/s2056989020014425.

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The title compound (systematic name: 3-chloro-5-fluoro-2-hydroxybenzaldehyde), C7H4ClFO2, is a dihalogenated salicylaldehyde derivative that has been studied for its antibacterial characteristics. The salicylaldehyde engages in intramolecular hydrogen bonding with an O—H...O distance of 2.6231 (19) Å while the molecules pack together via weak intermolecular C—H...O, C—H...F and F...O interactions and offset face-to-face π-stacking.

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36

Ahluwalia, Vivek, Jitendra Kumar, Virendra S. Rana, et al. "Synthesis and antimicrobial activity of esters of 3-ethoxy-4-hydroxybenzaldehyde oxime." Toxicological & Environmental Chemistry 99, no. 1 (2016): 1–9. http://dx.doi.org/10.1080/02772248.2016.1166227.

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37

Jiang, Li-Fang, Zun-Xing Huang та Jia-Hong Chen. "Bis(3-ethoxy-4-hydroxybenzaldehyde thiosemicarbazonato-κ2 S,N)nickel(II) monohydrate". Acta Crystallographica Section E Structure Reports Online 62, № 4 (2006): m799—m800. http://dx.doi.org/10.1107/s1600536806008348.

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In the crystal structure of the title compound, [Ni(C10H12N3O2S)2]·H2O, the NiII atom is located on an inversion center and is chelated by two hydroxyethoxybenzaldehyde thiosemicarbazonate anions in a square-planar geometry. The five-membered chelate ring assumes an envelope conformation, with the Ni atom lying at the flap position. The uncoordinated water molecule is disordered over another inversion center and is hydrogen bonded to the NiII complex.

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38

S., Vidyasagar Babu, and Hussain Reddy K. "Spectrophotometric determination of copper(II) and palladium(II) using 3-hydroxybenzaldehyde thiosemicarbazone." Journal of Indian Chemical Society Vol. 83, Jan 2006 (2006): 20–22. https://doi.org/10.5281/zenodo.5815117.

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Department of Chemistry, Sri Krishnadevaraya University, Anantapur-515 003, Andhra Pradesh, India <em>Manuscript received 23 June 2004, revised 22 August 2005, accepted 29 August 2005</em> The analytical properties of 3-hydroxybenzaldehyde thiosemicarbazones (HBT) are described for the first time. The reagent gives yellowish green coloured complexes with copper(II), palladium(ll) in sodium acetate-acetic acid buffer medium of pH 5.5 and 2.5 respectively. The molar absorptivities or copper and palladium complexes respectively are 8.75 x 10<sup>3</sup>, and 1.25 x 10<sup>4 </sup>L mol<sup>-1</su

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39

Shen, Xi-Hai, Li-Juen Shao, Zhao-Fu Zhu, and Li-Xue Zhu. "N′-(4-Diethylamino-2-hydroxybenzylidene)-4-methylbenzohydrazide." Acta Crystallographica Section E Structure Reports Online 68, no. 4 (2012): o1078. http://dx.doi.org/10.1107/s1600536812010690.

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The title compound, C19H23N3O2, was prepared by condensing 4-diethylamino-2-hydroxybenzaldehyde and 4-methylbenzohydrazide in methanol. The asymmetric unit contains two independent molecules in which the two benzene rings make dihedral angles of 30.3 (3) and 18.9 (3)°. Intramolecular O—H...N hydrogen bonds are observed in both molecules. The crystal structure is stabilized by N—H...O hydrogen bonds, which form chains along theaaxis.

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40

Linh, Bùi Thị Thùy, Nguyễn Tiến Công, and Huỳnh Thị Xuân Trang. "SYNTHESIS AND STRUCTURE OF SOME CHALCONES CONTAINING ACETAMIDE GROUP." Tạp chí Khoa học 17, no. 9 (2020): 1536. http://dx.doi.org/10.54607/hcmue.js.17.9.2789(2020).

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Hai chalcone là (E)-3-(2-hydroxyphenyl)-1-phenylprop-2-en-1-one (3a) và (E)-3-(4-hydroxyphenyl)-1-phenylprop-2-en-1-one (3b) đã được tổng hợp tương ứng từ phản ứng của acetophenone với 2-hydroxybenzaldehyde hoặc 4-hydroxybenzaldehyde. Phản ứng Williamson giữa (3a) hoặc (3b) với các N-aryl-2-chloroacetamide khác nhau đã tạo thành 8 hợp chất (E)-N-(4-aryl)-2-(2/4-(3-oxo-3-phenylprop-1-en-1-yl)phenoxy)acetamide; 7 trong số đó là chất mới: (E)-N-(4-bromophenyl)-2-(2-(3-oxo-3-phenylprop-1-en-1-yl)phenoxy)acetamide (5a), (E)-N-(4-chlorophenyl)-2-(2-(3-oxo-3-phenylprop-1-en-1-yl)phenoxy)acetamide (5b

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41

Schijndel, Jack van, Dennis Molendijk, Luiz Alberto Canalle, Erik Theodorus Rump, and Jan Meuldijk. "Temperature Dependent Green Synthesis of 3-Carboxycoumarins and 3,4-unsubstituted Coumarins." Current Organic Synthesis 16, no. 1 (2019): 130–35. http://dx.doi.org/10.2174/1570179415666180924124134.

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Aim and Objective: Because of the low abundance of 3,4-unsubstituted coumarins in plants combined with the complex purification process required, synthetic routes towards 3,4-unsubstituted coumarins are especially valuable. In the present work, we explore the possibilities of a solvent-free Green Knoevenagel condensation on various 2-hydroxybenzaldehyde derivatives and malonic acid without the use of toxic organocatalysts like pyridine and piperidine but only use ammonium bicarbonate as the catalyst. Materials and Methods: To investigate the scope of the Green Knoevenagel condensation for the

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42

Alakhras, Fadi, Huda Alghamdi, and Rabia Rehman. "Use of Chemically Modified Chitosan for the Adsorptive Removal of Toxic Metal Ions in Aqueous Solutions." Chemistry & Chemical Technology 17, no. 2 (2023): 407–19. http://dx.doi.org/10.23939/chcht17.02.407.

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Chemical modification of chitosan was successfully carried out using three derivatives namely: 3 hydroxybenzaldehyde, 2,3-dihydroxybenzaldehyde, and 3,5-di-tert-butyl-2-hydroxybenzaldehyde by a condensation reaction. Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) surface area, thermal gravimetric analysis (TGA), and X-ray diffraction (XRD) methods were performed for characterization of the chitosan-derived Schiff base adsorbent materials. The efficiency of the prepared adsorbents in removing cobalt and nickel ions from aqueous s

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Pawlaczyk, Mateusz, Rafał Frański, Michał Cegłowski, and Grzegorz Schroeder. "Mass Spectrometric Investigation of Organo-Functionalized Magnetic Nanoparticles Binding Properties toward Chalcones." Materials 14, no. 16 (2021): 4705. http://dx.doi.org/10.3390/ma14164705.

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Chalcones are naturally occurring compounds exhibiting multiple biological functions related to their structure. The investigation of complexes formed by chalcones, namely 2′,4′-dihydroxy-2-methoxychalcone (DH-2-MC) and 2′,4′-dihydroxy-3-methoxychalcone (DH-3-MC), with organo-functionalized Fe3O4 magnetic nanoparticles using mass spectrometric techniques is reported. The magnetic nanoparticles were obtained by the silanization of Fe3O4 particles with 3-aminopropyltrimethosysilane, which were subsequently reacted with 3-hydroxybenzaldehyde (3-HBA) or 2-pyridinecarboxaldehyde (2-PCA), resulting

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44

Peixoto, Juliana A. Barreto, Gerardo Álvarez-Rivera, Rita C. Alves, et al. "Comprehensive Phenolic and Free Amino Acid Analysis of Rosemary Infusions: Influence on the Antioxidant Potential." Antioxidants 10, no. 3 (2021): 500. http://dx.doi.org/10.3390/antiox10030500.

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The phenolics profile, free amino acids composition, and antioxidant potential of rosemary infusions were studied. Forty-four compounds belonging to nine different groups (hydroxybenzoic acids, hydroxycinnamic acids, flavan-3-ols, flavanones, flavones, phenolic diterpenes, hydroxybenzaldehydes, coumarins, and pyranochromanones) were identified by UHPLC-ESI-Q-TOF-MS. Of these, seven were firstly described in rosemary infusions: a rosmanol derivative, two dihydroxycoumarin hexosides, a hydroxybenzaldehyde, a dihydroxybenzoic acid hexoside, coumaric acid hexoside, and isocalolongic acid. The free

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Li, Huanxin, Yingnan Xie, Yan Xue, Peizhi Zhu, and Hongkun Zhao. "Solid–Liquid Ternary Phase Equilibrium of 3,5-Dibromo-4-hydroxybenzaldehyde + 3-Bromo-4-hydroxybenzaldehyde + N,N-Dimethylformamide/1,4-dioxane/dimethylsulfoxide: Determination and Model Correlation." Journal of Chemical & Engineering Data 66, no. 6 (2021): 2629–39. http://dx.doi.org/10.1021/acs.jced.1c00222.

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Ryan, John H., Nadia Spiccia, Leon S. M. Wong, and Andrew B. Holmes. "Synthesis of 5-Aryloxazolidines via 1,3-Dipolar Cycloaddition Reaction of a Non-Stabilized Azomethine Ylide with Aromatic Aldehydes." Australian Journal of Chemistry 60, no. 12 (2007): 898. http://dx.doi.org/10.1071/ch07282.

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The 1,3-dipolar cycloaddition reaction of a non-stabilized azomethine ylide 4a, formed in situ from N-(methoxymethyl)-N-(trimethylsilylmethyl)benzylamine 5 and a catalytic amount of trifluoroacetic acid, with aromatic aldehydes 3 gives rise to N-benzyl-5-aryloxazolidines 1. Under these conditions, 4-hydroxybenzaldehyde 3p undergoes two-fold addition of azomethine ylide 4a to afford bis adduct 11.

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Mauf, Ruwa M., and Neam H. Saleem. "PREPARATION, IDENTIFICATION AND STUDY THE BIOLOGICAL ACTIVITY OF NOVEL HETEROCYCLIC COMPOUNDS DERIVED FROM AZO–CHALCONE." Chemical Problems 23, no. 2 (2025): 272–85. https://doi.org/10.32737/2221-8688-2025-2-272-285.

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This work describes the preparation and spectroscopic investigation of new heterocyclic compounds derived from the 4-aminoantipyrene moiety. The compound (R1)3-((1,5-dimethyl-3-oxo-2phenyl-2,3-dihydro-1H-pyrazol-4-yl)diaz-enyl)-4-hydroxybenzaldehyde was prepared by reacting 4aminoantipyrene with 4-Hydroxybenzaldehyde according to the cold condition at (0-5) Celsius. This represents the starting point to create novel azo-chalcone compounds with a new nucleus as the alpha-beta unsaturated group, and the formation of compound (R2-6) via acetophenone derivatives using ethanol as a solvent under a

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48

Zhao, Meili. "Synthesis and Crystal Structure of 3-Bromo-2- hydroxybenzaldehyde-2-pyridinecarboxylic acid hydrazone." IOP Conference Series: Earth and Environmental Science 632 (January 14, 2021): 052034. http://dx.doi.org/10.1088/1755-1315/632/5/052034.

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Mart, H., T. Sökmen, and H. Yürük. "The synthesis and thermal properties of oligo-3-hydroxybenzaldehyde synthesized by oxidative polycondensation." Journal of Applied Polymer Science 101, no. 2 (2006): 892–97. http://dx.doi.org/10.1002/app.23537.

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S., I. JOGLEKAR, and D. SAMANT S. "New Route for the Preparation of 2H-3-Aryl-3,4- dihydro-1,3-benzoxazines and 2H-3-Aryl-3,4- dihydro-4-methyl- 1 ,3-benzoxazines." Journal of Indian Chemical Society Vol. 65, Feb 1988 (1988): 110–11. https://doi.org/10.5281/zenodo.6024759.

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Organic Chemistry Laboratory, University Department of Chemical Technology, Matunga, Bombay-400 019 <em>Manuscript recoiled 27 November 1986, revised 10 September 1987, accepted 11 December 1987</em> 2-Hydroxybenzaldehyde (1) and 1-(2-hydroxyphenyl)ethanone (2) on reaction with different primary aromatic amines gave 2-(arylimino)methylphenols (3) and 2-[1 -arylimino)ethyl]phenols (4), respectively. 3 and 4 on reduction with sodium borohydride gave 2-(arylamino)methylphenols (5) and 2-[1 (arylamino)ethyliphenols (6), which underwent cyclisation with formaldehyde to form 2<em>H</em>-3-aryl-

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