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Journal articles on the topic 'Dihydroxybenzaldehyde'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Liu, Haibo, Jiaqian Wang, Yonglin He, et al. "Investigation of the binding properties of 3,4-dihydroxybenzaldehyde from Salvia miltiorrhiza (Bunge) with human serum albumin via multi-spectroscopic and molecular docking techniques." BioResources 17, no. 2 (2022): 2680–95. http://dx.doi.org/10.15376/biores.17.2.2680-2695.

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To investigate the binding properties of 3,4-dihydroxybenzaldehyde with human serum albumin, as well as the structural changes of human serum albumin under a simulated physiological pH value (a pH of 7.4) and a high 3,4-dihydroxybenzaldehyde concentration, a series of techniques, i.e., fluorescence, synchronous fluorescence, ultraviolet-visible absorption, Fourier-transform infrared spectroscopy, and molecular docking simulation, were employed. Steady state fluorescence showed that 3,4-dihydroxybenzaldehyde quenched the intrinsic fluorescence of human serum albumin via a static mechanism. The

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2

Ng, Seik Weng. "2,3-Dihydroxybenzaldehyde." Acta Crystallographica Section E Structure Reports Online 61, no. 7 (2005): o2301—o2302. http://dx.doi.org/10.1107/s1600536805019719.

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3

Kretz, Tonia, Hans-Wolfram Lerner, and Michael Bolte. "2,5-Dihydroxybenzaldehyde." Acta Crystallographica Section E Structure Reports Online 63, no. 12 (2007): o4673. http://dx.doi.org/10.1107/s160053680705595x.

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4

Tan, Kong Wai, Yang Farina, Chew Hee Ng, Mohd Jamil Maah, and Seik Weng Ng. "3,4-Dihydroxybenzaldehyde thiosemicarbazone." Acta Crystallographica Section E Structure Reports Online 64, no. 6 (2008): o1073. http://dx.doi.org/10.1107/s160053680801386x.

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5

O'Connor, Kevin E., Bernard Witholt, and Wouter Duetz. "p-Hydroxyphenylacetic Acid Metabolism inPseudomonas putida F6." Journal of Bacteriology 183, no. 3 (2001): 928–33. http://dx.doi.org/10.1128/jb.183.3.928-933.2001.

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ABSTRACT Pseudomonas putida F6 was found to metabolizep-hydroxyphenylacetic acid through 3,4-dihydroxyphenylacetic acid, 3,4-dihydroxymandelic acid, and 3,4-dihydroxybenzaldehyde. Cell extracts of P. putida F6 catalyze the NAD(P)H-independent hydroxylation ofp-hydroxyphenylacetic acid to 3,4-dihydroxyphenylacetic acid which is further oxidized to 3,4-dihydroxymandelic acid. Oxidation and decarboxylation of the latter yields 3,4-dihydroxybenzaldehyde. A red-brown color accompanies all of the above enzyme activities and is probably due to the polymerization of quinone-like compounds. 3,4-Dihydro

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6

Liu, Dong Wang, Xiao Ji Wang, Shuang Ping Huang, Lin Jun Tang, Shi Peng Chen, and Jian Ting Zhang. "Design and Synthesis of (E)-2-Hydroxy-4-Alkoxyl Salicylaldoxime Copper Extractant." Advanced Materials Research 785-786 (September 2013): 109–12. http://dx.doi.org/10.4028/www.scientific.net/amr.785-786.109.

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Synthesis of the series of compounds, which could be put into extract copper , contained hydroformylation, etherification, oximation. Resorcinol as the starting material was transformed to 2,4-dihydroxybenzaldehyde, and then converted to 2,4-dihydroxybenzaldehyde, which oximated to (E)-2-hydroxy-4-alkoxybenzaldehyde oxime.

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7

Tan, Kong Wai, Chew Hee Ng, Mohd Jamil Maah, and Seik Weng Ng. "2,5-Dihydroxybenzaldehyde 4-methylthiosemicarbazone." Acta Crystallographica Section E Structure Reports Online 64, no. 7 (2008): o1344. http://dx.doi.org/10.1107/s1600536808018801.

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8

Tan, Kong Wai, Yang Farina, Chew Hee Ng, Mohd Jamil Maah, and Seik Weng Ng. "3,4-Dihydroxybenzaldehyde 4-phenylthiosemicarbazone." Acta Crystallographica Section E Structure Reports Online 64, no. 6 (2008): o1035. http://dx.doi.org/10.1107/s1600536808013287.

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9

Tan, Kong Wai, Chew Hee Ng, Mohd Jamil Maah, and Seik Weng Ng. "2,4-Dihydroxybenzaldehyde 4-ethylthiosemicarbazone." Acta Crystallographica Section E Structure Reports Online 64, no. 11 (2008): o2123. http://dx.doi.org/10.1107/s160053680803300x.

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10

Tan, Kong Wai, Chew Hee Ng, Mohd Jamil Maah, and Seik Weng Ng. "2,4-Dihydroxybenzaldehyde 4-methylthiosemicarbazone." Acta Crystallographica Section E Structure Reports Online 64, no. 11 (2008): o2224. http://dx.doi.org/10.1107/s1600536808033308.

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11

Swesi, Abdurazag T., Yang Farina, Mohammad Kassim, and Seik Weng Ng. "2,3-Dihydroxybenzaldehyde thiosemicarbazone hemihydrate." Acta Crystallographica Section E Structure Reports Online 62, no. 12 (2006): o5457—o5458. http://dx.doi.org/10.1107/s1600536806045776.

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12

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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13

Kayed, Safa'a Fares, Yang Farina, Ibrahim Baba, and Jim Simpson. "(E)-3,4-Dihydroxybenzaldehyde 4-ethylthiosemicarbazone." Acta Crystallographica Section E Structure Reports Online 64, no. 5 (2008): o824—o825. http://dx.doi.org/10.1107/s1600536808009148.

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14

Farina, Yang, and Jim Simpson. "(E)-3,4-Dihydroxybenzaldehyde 4-methylthiosemicarbazone." Acta Crystallographica Section E Structure Reports Online 64, no. 11 (2008): o2184—o2185. http://dx.doi.org/10.1107/s1600536808034326.

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15

Arsenyev, Max, Eugene Baranov, Sergey Chesnokov, and Gleb Abakumov. "4,6-Di-tert-butyl-2,3-dihydroxybenzaldehyde." Acta Crystallographica Section E Structure Reports Online 69, no. 10 (2013): o1565. http://dx.doi.org/10.1107/s1600536813025488.

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16

Cabanes, J., A. Sanchez-Ferrer, R. Bru, and F. García-Carmona. "Chemical and enzymic oxidation by tyrosinase of 3,4-dihydroxymandelate." Biochemical Journal 256, no. 2 (1988): 681–84. http://dx.doi.org/10.1042/bj2560681.

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Tyrosinase usually catalyses the conversion of monophenols into o-diphenols and the oxidation of diphenols to the corresponding o-quinones. Sugumaran [(1986) Biochemistry 25, 4489-4492] has previously proposed an unusual oxidative decarboxylation of 3,4-dihydroxymandelate catalysed by tyrosinase. Our determination of the intermediates involved in the reaction demonstrated that 3,4-dihydroxybenzaldehyde is not the first intermediate appearing in the medium during the enzymic reaction. Re-examination of this new activity of tyrosinase has demonstrated that the product of the enzyme action is the

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17

Gad, Hanem M., S. M. El Rayes, and Ehab A. Abdelrahman. "Modification of silica nanoparticles by 2,4-dihydroxybenzaldehyde and 5-bromosalicylaldehyde as new nanocomposites for efficient removal and preconcentration of Cu(ii) and Cd(ii) ions from water, blood, and fish muscles." RSC Advances 12, no. 30 (2022): 19209–24. http://dx.doi.org/10.1039/d2ra03177a.

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18

Sugumaran, M., H. Dali, and V. Semensi. "Mechanistic studies on tyrosinase-catalysed oxidative decarboxylation of 3,4-dihydroxymandelic acid." Biochemical Journal 281, no. 2 (1992): 353–57. http://dx.doi.org/10.1042/bj2810353.

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Mushroom tyrosinase, which is known to convert a variety of o-diphenols into o-benzoquinones, has been shown to catalyse an unusual oxidative decarboxylation of 3,4-dihydroxymandelic acid to 3,4-dihydroxybenzaldehyde [Sugumaran (1986) Biochemistry 25, 4489-4492]. The mechanism of this reaction was re-investigated. Although visible-region spectral studies of the reaction mixture containing 3,4-dihydroxymandelic acid and tyrosinase failed to generate the spectrum of a quinone product during the steady state of the reaction, both trapping experiments and non-steady-state kinetic experiments provi

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19

Wang, Li Ping, Dong Wang Liu, Gao Peng Wang, Shuang Lin Qin, Shuang Ping Huang, and Xiao Ji Wang. "Study on Synthesis of 6-Bromo-2, 3-Dihydroxybenzaldehyde." Advanced Materials Research 1033-1034 (October 2014): 552–54. http://dx.doi.org/10.4028/www.scientific.net/amr.1033-1034.552.

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20

Jung, Hyun-Joo, Yun-Seon Song, Chang-Jin Lim, and Eun-Hee Park. "Evaluation on Pharmacological Activities of 2,4-Dihydroxybenzaldehyde." Biomolecules and Therapeutics 17, no. 3 (2009): 263–69. http://dx.doi.org/10.4062/biomolther.2009.17.3.263.

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21

Mendelson, Wilford L., Monica Holmes, and Jack Dougherty. "The Regioselective 4-Benzylation of 2,4-Dihydroxybenzaldehyde." Synthetic Communications 26, no. 3 (1996): 593–601. http://dx.doi.org/10.1080/00397919608003653.

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22

Zhang, Zhao-Li, Jinglei Chen, Qiongming Xu, Cui Rao, and Chunhua Qiao. "Efficient Synthesis of Hydroxytyrosol from 3,4-Dihydroxybenzaldehyde." Synthetic Communications 42, no. 6 (2011): 794–98. http://dx.doi.org/10.1080/00397911.2010.531369.

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23

Bowes, Eric G., Graham M. Lee, Christopher M. Vogels, Andreas Decken, and Stephen A. Westcott. "Palladium salicylaldimine complexes derived from 2,3-dihydroxybenzaldehyde." Inorganica Chimica Acta 377, no. 1 (2011): 84–90. http://dx.doi.org/10.1016/j.ica.2011.07.051.

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24

Tanc, Muhammet, Fabrizio Carta, Andrea Scozzafava, and Claudiu T. Supuran. "6-Substituted 1,2-benzoxathiine-2,2-dioxides are isoform-selective inhibitors of human carbonic anhydrases IX, XII and VA." Organic & Biomolecular Chemistry 13, no. 1 (2015): 77–80. http://dx.doi.org/10.1039/c4ob02155j.

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A series of 6-substituted 2-benzoxathiine-2,2-dioxides were synthesized starting from 2,5-dihydroxybenzaldehyde, and then screened in vitro for their inhibition properties against five human carbonic anhydrase (hCA, EC 4.2.1.1) isoforms.

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25

Talakokkula, Anil, Karunakar Baikadi, and A. Narsaiah. "First Total Synthesis of Artekeiskeanol A, C and Altissimacoumarin D." SynOpen 03, no. 02 (2019): 49–54. http://dx.doi.org/10.1055/s-0037-1610873.

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The total syntheses of artekeiskeanol A and C, and altissimacoumarin D have been achieved. The syntheses commenced from commercially available starting materials, 2,4-dihydroxybenzaldehyde and geraniol. The key steps involve Wittig and Riley oxidation reactions.

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26

Yüksel, Esranur, Ali Bilici, İbrahim Halil Geçibesler, and İsmet Kaya. "Synthesis and antioxidant activities of phenolic Schiff base monomers and polymers." Canadian Journal of Chemistry 98, no. 3 (2020): 151–57. http://dx.doi.org/10.1139/cjc-2019-0307.

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In this work, synthesis, characterization, and antioxidant activities of two Schiff base monomers (1 and 2) and their corresponding oxidation products (3 and 4) were reported. The monomers were prepared by condensation of 8-amino-2-naphthol with 2,4-dihydroxybenzaldehyde and 3,4-dihydroxybenzaldehyde, and then, they were oxidized to in alkaline medium by NaOCl to obtain the corresponding oxidation products. The compounds 1–4 were characterized by various spectral techniques. The analysis results indicated that the oxidation products had a chain structure consisting of randomly ordered phenylen

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27

Zhang, Yingying, Chao Zhang, Yingnan Wu, Bing Zhao, Liyan Wang, and Bo Song. "A novel water-soluble naked-eye probe with a large Stokes shift for selective optical sensing of Hg2+ and its application in water samples and living cells." RSC Advances 9, no. 40 (2019): 23382–89. http://dx.doi.org/10.1039/c9ra03924d.

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A water-soluble and colorimetric fluorescent probe with a large Stokes shift (139 nm) for rapidly detecting Hg<sup>2+</sup>, namely Hcy-mP, was synthesized by using an indole derivative and 2,4-dihydroxybenzaldehyde as starting materials.

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28

Al-Wasidi, Asma S., Maram T. Basha, Reem M. Alghanmi, Eida S. Al-Farraj, and Ehab A. Abdelrahman. "Functionalization of Sodium Magnesium Silicate Hydroxide/Sodium Magnesium Silicate Hydrate Nanostructures Using 2,3-Dihydroxybenzaldehyde as a Novel Nanocomposite for the Efficient Removal of Cd(II) and Cu(II) Ions from Aqueous Media." Separations 10, no. 2 (2023): 88. http://dx.doi.org/10.3390/separations10020088.

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Cd(II) and Cu(II) ions cause many diseases in humans. Therefore, they should be removed from water sources using simple and cost-effective adsorbents. Consequently, sodium magnesium silicate hydroxide/sodium magnesium silicate hydrate nanostructures were synthesized and functionalized using 2,3-dihydroxybenzaldehyde as a novel nanocomposite. Several instruments were used to characterize the synthetic products, such as an X-ray diffractometer (XRD), a Fourier-transform infrared spectrophotometer (FT-IR), an N2 adsorption/desorption analyzer, a CHN elemental analyzer, an energy-dispersive X-ray

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29

M., S. MAYADEO, H. SINHA C., and S. KALE S. "Stability Constants of some Bivalent Metal Ion Chelates of Schiff Bases derived from : 2,4-Dihydroxybenzaldehyde." Journal of Indian Chemical Society Vol. 63, Jul 1986 (1986): 694–96. https://doi.org/10.5281/zenodo.6275233.

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Department of Chemistry, Ramnarain Ruia College, Matunga, Bombay-400 019 <em>Manuscript received 19 February 1986, revised .17 June 1986, accepted 25 June 1986</em> Stability Constants of some Bivalent Metal Ion Chelates of Schiff Bases derived from : 2,4-Dihydroxybenzaldehyde

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30

Nowak, Patryk, and Artur Sikorski. "Synthesis, Structural Characterization, Hirshfeld Surface Analysis, and Evaluation of Nonlinear Optical Properties of Novel Cocrystal of Acridine with 2,4-Dihydroxybenzaldehyde." Materials 18, no. 7 (2025): 1492. https://doi.org/10.3390/ma18071492.

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A cocrystal of acridine with 2,4-dihydroxybenzaldehyde (2:1 stoichiometric ratio) was synthesized, spectrally and structurally characterized using TG, DSC, ATR-FTIR and Single-Crystal XRD methods and Hirshfeld surface analysis, and its nonlinear optical properties were investigated by DFT at the B3LYP/6-311++Glevel. The obtained compound crystallizes in the noncentrosymmetric P21 monoclinic space group, with two molecules of acridine and one molecule of 2,4-dihydroxybenzaldehyde in the asymmetric unit. The strong O(aldehyde)–H⋯N(acridine) and weak C(aldehyde)–H⋯O(aldehyde) and C(aldehyde)–H⋯O(

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31

Kiriyak, Ludmila, Natalia Cecoi, Tatiana Cazac, and Mihail Revenco. "Adsorption Wave of Vanadium Complex with 2,3–Dihydroxybenzaldehyde." Chemistry Journal of Moldova 4, no. 2 (2009): 24–27. http://dx.doi.org/10.19261/cjm.2009.04(2).16.

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The polarographic behavior of the complex formed by V(V) and 2,3–dihydroxybenzaldehyde (2,3–DHBA) in the solution containing acetate buffer (pH 5,2) has been investigated. By means of a.c. polarography, chronovoltammetry and other techniques, it has been shown that the electrode process is complicated by the adsorption of 2,3-DHBA and its vanadium complex. The kinetic and adsorption parameters of the electrode process have been determined: adsorption equilibrium constant B= 1,32⋅105 mol-1⋅dm3, the attraction constant γ = 1,2, the maximum surface concentration Гmax = 9,10⋅10-11 mol⋅ cm-2; the s

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32

Syafni, Nova, Deddi Prima Putra, and Dayar Arbain. "3,4-DIHYDROXYBENZOIC ACID AND 3,4-DIHYDROXYBENZALDEHYDE FROM THE FERN Trichomanes chinense L.; ISOLATION, ANTIMICROBIAL AND ANTIOXIDANT PROPERTIES." Indonesian Journal of Chemistry 12, no. 3 (2012): 273–78. http://dx.doi.org/10.22146/ijc.21342.

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3,4-dihydroxybenzoic acid (1) and 3,4-dihydroxybenzaldehyde (2) have been isolated from ethyl acetate fraction of methanolic fractions of leaves, stems and roots of the fern Trichomanes chinense L. (Hymenophyllaceae). These two compounds also showed significant antioxidant using DPPH and antimicrobial activities using the disc diffusion assay.

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33

Gad, Hanem M., S. M. El Rayes, and Ehab A. Abdelrahman. "Correction: Modification of silica nanoparticles by 2,4-dihydroxybenzaldehyde and 5-bromosalicylaldehyde as new nanocomposites for efficient removal and preconcentration of Cu(ii) and Cd(ii) ions from water, blood, and fish muscles." RSC Advances 12, no. 32 (2022): 20762–64. http://dx.doi.org/10.1039/d2ra90073d.

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Correction for ‘Modification of silica nanoparticles by 2,4-dihydroxybenzaldehyde and 5-bromosalicylaldehyde as new nanocomposites for efficient removal and preconcentration of Cu(ii) and Cd(ii) ions from water, blood, and fish muscles' by Hanem M. Gad et al., RSC Adv., 2022, 12, 19209–19224, https://doi.org/10.1039/D2RA03177A.

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34

Enders, Dieter, Jeanne Fronert, Tom Bisschops, and Florian Boeck. "Asymmetric total synthesis of smyrindiol employing an organocatalytic aldol key step." Beilstein Journal of Organic Chemistry 8 (July 18, 2012): 1112–17. http://dx.doi.org/10.3762/bjoc.8.123.

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The first organocatalytic asymmetric synthesis of smyrindiol, by using an (S)-proline catalyzed enantioselective intramolecular aldol reaction as the key step, is described. Smyrindiol was synthesized from commercially available 2,4-dihydroxybenzaldehyde in 15 steps, with excellent stereoselectivity (de = 99%, ee = 99%). In the course of this total synthesis a new and mild coumarin assembly was developed.

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35

Mendelson, Wilford L., and Stuart Hayden. "Preparation of 2,4-Dihydroxybenzaldehyde by the Vilsmeier-Haack Reaction." Synthetic Communications 26, no. 3 (1996): 603–10. http://dx.doi.org/10.1080/00397919608003654.

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36

Li, Xiufang, Bin Xiang, Ting Shen, et al. "Anti-neuroinflammatory effect of 3,4-dihydroxybenzaldehyde in ischemic stroke." International Immunopharmacology 82 (May 2020): 106353. http://dx.doi.org/10.1016/j.intimp.2020.106353.

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37

MENDELSON, W. L., M. HOLMES, and J. DOUGHERTY. "ChemInform Abstract: The Regioselective 4-Benzylation of 2,4-Dihydroxybenzaldehyde." ChemInform 27, no. 24 (2010): no. http://dx.doi.org/10.1002/chin.199624117.

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38

Zhang, Zhao-Li, Jinglei Chen, Qiongming Xu, Cui Rao, and Chunhua Qiao. "ChemInform Abstract: Efficient Synthesis of Hydroxytyrosol from 3,4-Dihydroxybenzaldehyde." ChemInform 43, no. 32 (2012): no. http://dx.doi.org/10.1002/chin.201232222.

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39

B., K. PATEL, and M. PATEL M. "2,4-Dihydroxybenzaldehyde -Formaldehyde Copolymers and their Ion-exchange Properties." Journal of Indian Chemical Society Vol. 65, Sep 1988 (1988): 651–54. https://doi.org/10.5281/zenodo.6045038.

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Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar-388 120 <em>Manuscript received 10 February 1988, revised 25 April 1988, accepted 6 July 1988</em> Copolymers were synthesised by the condensation of 2,4-dihydroxy- benzaldehyde (2,4-DB) and formaldehyde (F) in the presence of H<sub>2</sub>SO<sub>4</sub> (1.5 <em>M</em>) and HCI (2 <em>M</em>) as catalyst with varied molar ratios of the reacting monomers. The copolymers were characterised by ir spectra, \(\overline{M}\)<sub>n </sub>was determined by vapour pressure osmometry as well as by non-aqueous condu

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40

Ghodsi, Razieh, Morteza Safarnejad, Sina Omid Malayeri, and Sima Golmakanion. "3,3′-(Arylmethylene)bis(2-hydroxynaphthalene-1,4-dione) as the Main Product of the Mannich Reaction of 2-Hydroxy-1,4-Naphthoquinone with 4H-1,2,4-Triazol-4-Amine and Various Aldehydes." Journal of Chemical Research 42, no. 4 (2018): 224–26. http://dx.doi.org/10.3184/174751918x15242406216491.

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The Mannich reaction of lawsone with various aldehydes and 4 H-1,2,4-triazol-4-amine gave unexpected 3,3′-(arylmethylene)bis(2-hydroxynaphthalene-1,4-dione) derivatives. With 2,4-dihydroxybenzaldehyde under the same conditions, it led to the formation of 3-hydroxy-12-(3-hydroxy-1,4-dioxo-1,4-dihydronaphthalen-2-yl)-6 H-benzo[ b]xanthene-6,11(12 H)-dione instead of various triazolylaminonaphthoquinones.

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41

Novoselova, Julia V., Anatoliy A. Vereshchagin, Arseniy Y. Kalnin, Daniil A. Lukyanov, and Oleg V. Levin. "2-Hydroxy-3-octyloxybenzaldehyde." Molbank 2021, no. 3 (2021): M1264. http://dx.doi.org/10.3390/m1264.

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Herein, we report the chromatography-free synthesis of 2-hydroxy-3-octyloxybenzaldehyde by the alkylation of 2,3-dihydroxybenzaldehyde as a promising precursor for new SalEn-type complexes with transition metals. The structure of the product is elucidated by means of 1H and 13C-NMR spectra, high-resolution mass spectrometry with electrospray ionization (ESI-HRMS) and Fourier-transform infrared spectroscopy (FTIR).

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42

Flores-Morales, Virginia, Eduardo D. Ayala-Medrano, José García-Elías, Margarita L. Martínez-Fierro, Edgar Marquez, and José Mora. "Understanding the Lack of Reactivity of 2,4-Dihydroxybenzaldehyde Towards the Biginelli Adduct Using Density Functional Theory Molecular Modeling." Processes 7, no. 8 (2019): 521. http://dx.doi.org/10.3390/pr7080521.

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The Biginelli reaction is a multicomponent reaction for obtaining dihydropyrimidinthiones quickly, with multiple substitution patterns. The reaction mechanism remains unclear. Three possible pathways proposed for the reaction are the iminium route, an enamine intermediate, and the Knoevenagel pathway. However, when thiourea was used, no theoretical calculations were reported. Thus, based on the literature, the iminium pathway was used to obtain evidence explaining the lack of reactivity of 2,4-dihydroxybenzaldehyde towards the Biginelli adduct, compared with 4-hydroxybenzaldehyde. This computa

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43

FRIEDMAN, MENDEL, PHILIP R. HENIKA, and ROBERT E. MANDRELL. "Antibacterial Activities of Phenolic Benzaldehydes and Benzoic Acids against Campylobacter jejuni, Escherichia coli, Listeria monocytogenes, and Salmonella enterica." Journal of Food Protection 66, no. 10 (2003): 1811–21. http://dx.doi.org/10.4315/0362-028x-66.10.1811.

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We evaluated the bactericidal activities of 35 benzaldehydes, 34 benzoic acids, and 1 benzoic acid methyl ester against Campylobacter jejuni, Escherichia coli O157:H7, Listeria monocytogenes, and Salmonella enterica when these compounds were substituted on the benzene ring with 0, 1, 2, or 3 hydroxy (OH) and/or methoxy (OCH3) groups in a pH 7.0 buffer. Dose-response plots were used to determine the percentage of the sample that induced a 50% decrease in CFU after 60 min (BA50). Of the 70 compounds tested, 24 were found to be active against all four pathogens, and additional 4, 10, and 12 were

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44

Si, Yu Hui, Gang Chun Sun, Ge Song, Wen Peng Mai, and Zhi Cheng Li. "Synthesis and Characterization of Novel Roflumilast Analogues." Advanced Materials Research 781-784 (September 2013): 1190–93. http://dx.doi.org/10.4028/www.scientific.net/amr.781-784.1190.

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A series of new roflumilast analogues with Crown ether structures were designed and synthesized. Crown-ether-type benzaldehydes were first prepared from 3,4-dihydroxybenzaldehyde with 1-bromo-3-chloropropane and 1-chloro-2-(2-chloroethoxy) ethane respectively, then after oxidation, acylation and amidation as the last step with 3,5-dichloropyridin-4-amine the roflumilast analogues were obtained. These compounds were characterised by1H NMR, IR, ESI-MS and elemental analysis.

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45

Tahir, Muhammad Nawaz, Hazoor Ahmad Shad, Abdul Rauf, and Abdul Haleem Khan. "Crystal structure of 3-{(E)-[(3,4-dichlorophenyl)imino]methyl}benzene-1,2-diol." Acta Crystallographica Section E Crystallographic Communications 71, no. 2 (2015): o137—o138. http://dx.doi.org/10.1107/s2056989015001401.

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In the title Schiff base, C13H9Cl2NO2, which arose from the condensation of 3,4-dichloroaniline with 2,3-dihydroxybenzaldehyde, the dihedral angle between the aromatic rings is 44.74 (13)°. Intramolecular O—H...O and O—H...N hydrogen bonds closeS(5) andS(6) rings, respectively. In the crystal, inversion dimers linked by pairs of O—H...O hydrogen bonds generateR22(10) loops. A weak C—H...π interaction is also observed.

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Schneider, Tobias, Joshua Martin, Patrick Durkin, Vladimir Kubyshkin, and Nediljko Budisa. "The Regioselective Synthesis of o-Nitrobenzyl DOPA Derivatives." Synthesis 49, no. 12 (2017): 2691–99. http://dx.doi.org/10.1055/s-0036-1588766.

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Photocaged DOPA derivatives may serve for non-invasive unmasking of the catechol fragment in biological systems. This would enable efficient control of the redox and metal-coordinating properties associated with the free catechol moiety, in particular, in biosynthetically produced adhesive proteins and synthetic peptides. Synthetic routes towards photocaged DOPA derivatives are reported herein. A new method for preparing para-alkylated DOPA starting from 3,4-dihydroxybenzaldehyde is described for the first time.

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47

Topić, Edi, Vladimir Damjanović, Katarina Pičuljan, Višnja Vrdoljak, and Mirta Rubčić. "Succinyl and Adipoyl Dihydrazones: A Solid-State, Solution and Antibacterial Study." Crystals 12, no. 8 (2022): 1175. http://dx.doi.org/10.3390/cryst12081175.

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A series of aryl-functionalized alkyl dihydrazones was prepared by condensation of succinyl or adipoyl dihydrazide and selected ortho-hydroxybenzaldehydes (2-hydroxybenzaldehyde, 2-hydroxy-1-naphthaldehyde, 2,3-dihydroxybenzaldehyde, and 2,4-dihydroxybenzaldehyde) in solution. The obtained products were structurally characterized in the solid state by single-crystal X-ray diffraction (SC-XRD), thermal analysis (TGA-DSC), and Fourier transform infrared (FTIR) spectroscopy and in DMSO-d6 solution by nuclear magnetic resonance (NMR) techniques. Combined FTIR and crystal structure data point to a

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48

Wang, Hui, Xin Du, Yuanyuan Liu, et al. "An Environmentally Friendly Supramolecular Glue Developed from Natural 3,4-Dihydroxybenzaldehyde." Polymers 14, no. 5 (2022): 916. http://dx.doi.org/10.3390/polym14050916.

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Liquid adhesive suffers from the emission of volatile organic compounds (VOCs) that have detrimental effects on human beings. Herein, an environmentally friendly glue containing a novel supramolecule dissolved in non-toxic ethanol is developed. Poly (ether amine) (PEA) and 3,4-dihydroxybenzaldehyde (dhba) is utilized to synthesize catechol-terminated PEA, and subsequent complexation by Fe3+ results in the supramolecular component (PEA-dhba-Fe3+). The Fourier transform infrared (FTIR) spectrum together with the UV-vis spectrum reveal the existence of quinone converted from catechol. Raman spect

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Jin, Hai-Shan, Li-Ming Zhang, Zhi-Wei Yan, and Feng-Yan Ma. "Synthesis of 4-Methoxysalicylaldehyde via Selective Monomethylation of 2,4-Dihydroxybenzaldehyde." Journal of Chemical Research 36, no. 3 (2012): 144–45. http://dx.doi.org/10.3184/174751912x13295680217793.

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4-Methoxysalicylaldehyde, a naturally occurring product, has a range of industrial applications in the preparation of organic compounds, drugs and therapeutic agents. 4-Methoxysalicylaldehyde can be synthesised via selective monomethylation of 2,4-dihydroxybenzaldehyde in toluene in the presence of NaHCO3 in higher yield using cheaper reagents with little production of dimethylation product compared to previous methods. The location of the methoxyl group was confirmed by conversion to 3-acetyl-7-methoxycoumarin by condensation with ethyl acetoacetate.

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Loupy, Andre, and Mustapha Majdoub. "MONOMETHYLATION OF 3,4-DIHYDROXYBENZALDEHYDE AS AN ALTERNATE ROUTE TO ISOVANILLIN." Organic Preparations and Procedures International 22, no. 1 (1990): 99–102. http://dx.doi.org/10.1080/00304949009356674.

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