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Journal articles on the topic 'Aromatic derivatives'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Jurczak, Janusz, Agnieszka Cholewiak, and Pawel Stepniak. "Linear Neutral Receptors for Anions: Synthesis, Structure and Applications." Synthesis 50, no. 23 (2018): 4555–68. http://dx.doi.org/10.1055/s-0037-1609943.

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A selective digest of linear anion receptors based on different aromatic skeletons is presented. Since the structures of anions vary from one to another, different strategies have been developed over recent years in order to bind anions efficiently and selectively. Rigidity, number of hydrogen bond donors, steric hindrance, and special preorganization of linear receptors are analyzed to shed light on the rational design of anion receptors.1 Introduction2 1,3- and 1,2-Benzene Derivatives3 1,3- and 5,7-Azulene Derivatives4 1,8-Naphthalene Derivatives5 1,8-Anthracene Derivatives6 2,6-Pyridine Der

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2

Berrío Escobar, Jhon Fernando, Victor Hugo Arango Carmona, Elkin Galeano Jaramillo, et al. "Synthesis and cytotoxic activity of tri-acyl ester derivatives of uridine in breast cancer cells." Ars Pharmaceutica (Internet) 57, no. 4 (2016): 183–91. http://dx.doi.org/10.30827/ars.v57i4.5560.

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Aims: Synthesize tri-acyl ester derivatives of uridine, and evaluate its cytotoxicity against breast cancer cells line. Methods: The tri-esterified uridine derivatives were obtained through Steglich esterification reaction by fatty and aromatic acids, and with acetic anhydride. An acetonide derivative from uridine was prepared with acid catalysis. Compounds were characterized by NMR spectroscopy (1H NMR and 13C NMR), and mass spectrometry. Derivatives were assessed in chinese hamster ovary (CHO-K1) and human breast cancer (MCF-7) cell lines. Results: Five tri-acyl ester derivatives of uridine

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3

Taylor, Roger. "Aromatic fullerene derivatives." Phys. Chem. Chem. Phys. 6, no. 2 (2004): 328–31. http://dx.doi.org/10.1039/b312502p.

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4

Tori, Motoo, Masakazu Sono, Keiko Takikawa, et al. "Oxidation Reactions of Marchantin A Trimethyl Ether and Some Aromatic Compounds using m-Chloroperbenzoic Acid. Formation of Muconic Acid Ester and m-Chlorobenzoate." Journal of Chemical Research 23, no. 8 (1999): 470–71. http://dx.doi.org/10.1177/174751989902300808.

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On treatment with m-chloroperbenzoic acid, dihydroeugenol methyl ether and marchantin A trimethyl ether afford muconic acid ester derivatives by oxidation of the aromatic ring as well as hydroxylated derivatives; the m-chlorobenzoate of the dihydroeugenol derivative is also observed for the former.

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5

Cao, Fengyi, Genxing Zhu, Meng Song, Xiaoli Zhao, Gangqing Ma, and Mengqing Zhang. "Study on the self-assembly of aromatic antimicrobial peptides based on different PAF26 peptide sequences." e-Polymers 22, no. 1 (2022): 276–84. http://dx.doi.org/10.1515/epoly-2022-0012.

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Abstract Antimicrobial peptide (AMP) self-assembly is an effective way to synthesis antimicrobial biomaterials. In previous studies, we found PAF26 AMP (Ac-RKKWFW-NH2) and its derivative K2–F2 peptide (Ac-KKRKKWFWFF-NH2) could both self-assemble into hydrogels, but they had distinct microscopic structures. Therefore, in this work five PAF26 peptide derivatives with different numbers of aromatic amino acids are designed to better understand the self-assembly mechanism of aromatic AMP. The transmission electron microscopy, infrared spectroscopy, circular dichroism, and fluorescence spectroscopy

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6

Simon, Péter, Bálint Lőrinczi, and István Szatmári. "Alkoxyalkylation of Electron-Rich Aromatic Compounds." International Journal of Molecular Sciences 25, no. 13 (2024): 6966. http://dx.doi.org/10.3390/ijms25136966.

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Alkoxyalkylation and hydroxyalkylation methods utilizing oxo-compound derivatives such as aldehydes, acetals or acetylenes and various alcohols or water are widely used tools in preparative organic chemistry to synthesize bioactive compounds, biosensors, supramolecular compounds and petrochemicals. The syntheses of such molecules of broad relevance are facilitated by acid, base or heterogenous catalysis. However, degradation of the N-analogous Mannich bases are reported to yield alkoxyalkyl derivatives via the retro-Mannich reaction. The mutual derivative of all mentioned species are quinone m

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7

Arsianti, Ade, Chie Aoki Utsubo, Fadilah Fadilah, et al. "SYNTHESIS AND ANTI-HEPATITIS C VIRUS ACTIVITY OF GALLIC ACID DERIVATIVES WITH CHIRAL CENTER." Asian Journal of Pharmaceutical and Clinical Research 10, no. 7 (2017): 164. http://dx.doi.org/10.22159/ajpcr.2017.v10i7.18162.

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Objective: In this work, we aim to synthesize gallic acid derivatives with chiral center and to evaluate its anti-hepatitis C virus (anti-HCV) activity.Methods: Synthesis of the target derivatives was started from esterification of commercially available boc deprotection (Boc)-L-threonine with allyl bromide, followed by Boc with HCl/EtOAc, amidation, and Sharpless asymmetric dihydroxylation with (DHQ)2PHAL or (DHQD)2PHAL as a ligand to give desired gallic acid derivatives. The synthesized gallic acid derivatives were then evaluated for anti-HCV activity and cytotoxicity.Results: The target der

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8

Cambie, RC, PS Rutledge, RJ Stevenson, and PD Woodgate. "Synthesis of Phthalide Derivatives of Podocarpic Acid Via Directed ortho Metalation: a Route to Highly Substituted Octahydrochrysene Derivatives." Australian Journal of Chemistry 47, no. 5 (1994): 913. http://dx.doi.org/10.1071/ch9940913.

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Two phthalide derivatives (7) and (8) have been prepared from podocarpic acid (1) via directed ortho metallation. The ring-c aromatic 16-oxa-17-oxo androstane analogue (8) was reacted with dimethyl acetylenedicarboxylate to give the 1,4-epoxy decahydrochrysene derivatives (9) and (10). The stereoisomer (10) was aromatized under acidic conditions to give the chrysen-1-ol derivative (11).

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9

Abdel-Latif, Nehad A. "Synthesis and Antidepressant Activity of Some New Coumarin Derivatives." Scientia Pharmaceutica 73, no. 4 (2005): 193–216. http://dx.doi.org/10.3797/scipharm.aut-05-15.

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The coumarin-3-cinnamoyl derivatives 2a-d were prepared via Claisen-Schmidt condensation of 3-acetylcoumarin 1 with different aromatic aldehydes. Cycloaddition reaction of 2b,e with guanidine and thiourea yielded the corresponding aminopyrmimidine 3a,b and thioxypyrimidine derivatives 4a,b, respectively. Compounds 4a,b were condensed with chloroacetic acid or 3-bromopropionic acid to yield coumarin 3-thiazolo-pyrimidine 5a,b and thiazinopyrimidine 6a,b derivatives, respectively. Compounds 4a,b were condensed with chloroacetic acid and aromatic aldehyde to yield the aryl methylene derivatives 7

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10

Afef, Meftah, Messaoudi Nassiba, Khelifa Foudil, Bourhane Djebar Abdallah, and Bachari Khaldoun. "The Attitude In Vitro of 10 Ubiquitous Bacteria in Seawater Polluted by Benzene and Toluene." INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGICAL SCIENCES 5, May & June 2021 (2021): 122–41. https://doi.org/10.5281/zenodo.5150052.

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<em>This study focuses on specifying a number of ubiquitous non-fastidious bacteria isolated from urine hospitalized patients for their abilities to degrade benzene and toluene. Using the MALDI-Tof technique (Bruker Daltonics), these opportunist bacteria have been identified. The bacteria were inoculated and incubated in sterile water contaminated with pure benzene and toluene for 63 days, at room temperature with continuous oxygenation. Analysis by Gas Chromatography/ Mass Spectrometry (GC / MS) HP6890 / HP 5973 MS (Agilent Technologies) allowed us to determine the concentration of each hydro

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11

Shoji, Taku, Mutsumi Takeuchi, Mayumi Uda, et al. "Synthesis of Azuleno[2,1-b]quinolones and Quinolines via Brønsted Acid-Catalyzed Cyclization of 2-Arylaminoazulenes." Molecules 28, no. 15 (2023): 5785. http://dx.doi.org/10.3390/molecules28155785.

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Quinolone and quinoline derivatives are frequently found as substructures in pharmaceutically active compounds. In this paper, we describe a procedure for the synthesis of azuleno[2,1-b]quinolones and quinolines from 2-arylaminoazulene derivatives, which are readily prepared via the aromatic nucleophilic substitution reaction of a 2-chloroazulene derivative with several arylamines. The synthesis of azuleno[2,1-b]quinolones was established by the Brønsted acid-catalyzed intramolecular cyclization of 2-arylaminoazulene derivatives bearing two ester groups at the five-membered ring. The halogenat

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12

Vincendon, Marc. "Scleroglucan derivatives: Aromatic carbamates." Journal of Polymer Science Part A: Polymer Chemistry 37, no. 16 (1999): 3187–92. http://dx.doi.org/10.1002/(sici)1099-0518(19990815)37:16<3187::aid-pola16>3.0.co;2-j.

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13

Jiao, Ti Feng, Yuan Yuan Xing, Jing Xin Zhou, and Wei Wang. "Synthesis and Characterization of Some Functional Luminol Derivatives with Aromatic Substituted Groups." Advanced Materials Research 197-198 (February 2011): 606–9. http://dx.doi.org/10.4028/www.scientific.net/amr.197-198.606.

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Some functional luminol derivatives with aromatic substituted groups have been designed and synthesized from the reaction of the corresponding aromatic acyl chloride precursors with luminol. It has been found that depending on the size of aromatic groups, the formed luminol derivatives showed different properties, indicating distinct regulation of molecular skeletons. UV and IR data confirmed commonly the formation of imide group as well as aromatic segment in molecular structures. Thermal analysis showed that the thermal stability of luminol derivatives with p-phthaloyl segment was the highes

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14

Lianguzov, A. Y., N. M. Malygina, A. M. Ivanov, and T. A. Petrova. "On Particular Regimens of Derivative UV-spectrophotometry for Comparative Analysis of Proteins." Прикладная биохимия и микробиология 59, no. 4 (2023): 418–24. http://dx.doi.org/10.31857/s0555109923040086.

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Bovine serum albumin and two oxygen transport proteins, hemocyanin from the snail Achatina fulica and bovine hemoglobin, were used to define what regimens of derivative UV-spectrophotometry are most appropriate for using it as an express technique for nondestructive comparative analysis of native proteins preparations. It was found that the fourth derivatives of proteins absorption spectra make it possible to detect the individual bands of aromatic amino acids in a way optimal for solving certain practical problems. An algorithm for calculating the fourth derivatives was selected experimentall

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15

Sooksimuang, Thanasat, Saeid J. Behroozi, and Braja K. Mandal. "New polyphenylated phthalocyanine derivatives." Journal of Porphyrins and Phthalocyanines 06, no. 08 (2002): 544–47. http://dx.doi.org/10.1142/s1088424602000671.

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A new class of polyphenylated phthalocyanine derivatives containing near-planar aromatic rings attached to the phthalocyanine core has been synthesized. The aromatic rings contributed to a significant red shift of the Q-band absorption. Linear optical and electrochemical properties of these derivatives are described.

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16

Swamy, M. Kumara, and K. Bhaskar. "Synthesis and Anticancer Activity of Novel Carbohydrazide and Carboxamide Derivatives of Pyridine Fused Heterocyclic Derivatives." Asian Journal of Chemistry 34, no. 10 (2022): 2683–87. http://dx.doi.org/10.14233/ajchem.2022.23875.

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A series of novel carbohydrazide and carboxamide derivatives of hetero-fused pyridine derivatives were synthesized starting from bis-trifluoromethyl containing pyridine 1. Compound 1 on Smiles rearrangement obtained compound 2, then compound 2 on coupling with diethyl ethoxymethylenemalonate (EMME), further reaction with POCl3 and hydrazine hydrate to obtain pyridopyrimidine hydrazide derivatives. This hydrazide derivative reacts with different substituted aromatic aldehydes to produce title carbohydrazide derivatives 6a-h. Pyridopyrimidine carboxylate compound on reaction with aliphatic amine

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17

Kmal, Rafid Q., Shaimaa A. Behget, and Meaad N. Husean. "Synthesis and Characterization of Formazan Derivatives from Schiff’s Base and Studying their Biological Activity." INTERNATIONAL JOURNAL OF DRUG DELIVERY TECHNOLOGY 12, no. 02 (2022): 782–88. http://dx.doi.org/10.25258/ijddt.12.2.56.

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A group of substituted formazine derivatives was prepared through several steps where the first step was the preparation of compound (1) by reacting chloroacetyl chloride with 2-aminopyrimidine, and the second step was the reaction of compound (1) with hydrazine hydrate to obtain the derivative (2) and in the third step was prepared Schiff’s base (3) by reaction of derivative (2) with para-dimethyl benzaldehyde and then a number of formazine derivatives were synthesized by reaction of derivative (3) with a number of substituted aromatic amines. The newly prepared derivatives are distinguished

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18

Bagdžiūnas, Gintautas, Sigitas Stončius, and Eugenijus Butkus. "Synthesis of Star-Shaped Aromatic Derivatives with Chirality Predetermined by Bicyclo[3.3.1]nonane Framework." Synlett 28, no. 20 (2017): 2790–94. http://dx.doi.org/10.1055/s-0036-1590833.

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Star-shaped aromatic derivatives of bicyclo[3.3.1]nonane with predetermined chirality were synthesized by employing the Suzuki and Sonogashira reactions. The C 3-symmetric trifunctional aromatic derivatives based on the lateral bicyclo[3.3.1]nonene moiety possess unique molecular structures. The chiroptical properties of the star-shaped compounds and the corresponding monomeric derivatives were studied, and the absolute configuration was confirmed by using the empirical octant rule for the carbonyl chromophore and the sector rule for the aromatic chromophore.

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19

Kuninobu, Yoichiro, Yuta Nishina, Atsushi Kawata, Makoto Shouho, and Kazuhiko Takai. "Rhenium-catalyzed synthesis of indene derivatives via C-H bond activation." Pure and Applied Chemistry 80, no. 5 (2008): 1149–54. http://dx.doi.org/10.1351/pac200880051149.

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Rhenium complex, [ReBr(CO)3(thf)]2-catalyzed reactions between aromatic imines and either acetylenes or α,β-unsaturated carbonyl compounds gave indene derivatives in good to excellent yields. These reactions proceed via C-H bond activation, insertion of acetylenes or α,β-unsaturated carbonyl compounds, intramolecular nucleophilic cyclization, and reductive elimination. Indene derivatives were also obtained from aromatic ketones and α,β-unsaturated carbonyl compounds in the presence of catalytic amounts of the rhenium complex and p-anisidine. Sequential ruthenium-catalyzed hydroamination of aro

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20

Patel, H. S., and H. D. Desai. "Synthesis of Some New Azetidinone Derivatives Containing Aryl Sulfonyloxy Group." E-Journal of Chemistry 1, no. 4 (2004): 194–98. http://dx.doi.org/10.1155/2004/258752.

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Some novel azetidinone derivatives containing aryl sulfonyloxy group have been prepared. The 4-sulfonyloxy aniline derivative (2) has been prepared by reaction of 4-nitro phenol (sodium salt) with N-acetyl sulfanilyl chloride (ASC) followed by hydrolysis by ethanolic HCl. This compound (2) undergoes facile condensation reaction with aromatic aldehydes to yield different Schiff’s bases (3a-h). Cyclocondensation of compounds (3a-h) with chloro acetyl chloride yields different 2-azetidinone derivatives (4a-h).

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21

Fan, Yunpeng, Wen Wan, Guobin Ma, et al. "Room-temperature Cu(ii)-catalyzed aromatic C–H azidation for the synthesis of ortho-azido anilines with excellent regioselectivity." Chem. Commun. 50, no. 43 (2014): 5733–36. http://dx.doi.org/10.1039/c4cc01481b.

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An efficient synthesis of ortho-aniline derivatives through aromatic C–H azidation catalyzed by Cu(OAc)<sub>2</sub> have been disclosed. The amino group plays an ortho-directing effect in the azidation reactions, regiospecifically affording the mono-azidated derivative as the sole products.

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22

Han, Yong Ping, and Qiang Lin. "Synthesis,Characterization, and Antibacterial Activity of Quaternized of N-Aromatic Chitosan Derivatives." Applied Mechanics and Materials 138-139 (November 2011): 1202–8. http://dx.doi.org/10.4028/www.scientific.net/amm.138-139.1202.

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The quaternized of N-aryl chitosan (CTS) derivatives containing different aromatic moieties were synthesized by two steps, N-aromatic Schiff and the quaternization. The chemical structures of all chitosan derivatives, N-vanillin Schiff’s base chitosan (NVCh), N-cinnamaldehyde Schiff’s base chitosan (NCCh), N-benzaldehyde Schiff’s base CTS (NBCh), and their quaternized of N-aromatic CTS derivatives were characterized by ATR-FTIR. The water solubility of the N-aromatic Schiff’s base CTS derivatives had very poor water solubility. But after quaternized, the water solubility of CTS derivatives was

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23

El Malah, Tamer, Randa E. Abdel Mageid, Hanem M. Awad, and Hany F. Nour. "Copper(i)-catalysed azide–alkyne cycloaddition and antiproliferative activity of mono- and bis-1,2,3-triazole derivatives." New Journal of Chemistry 44, no. 42 (2020): 18256–63. http://dx.doi.org/10.1039/d0nj04308g.

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A series of mono- and bis-1,2,3-triazole derivatives were prepared via the copper(i)-catalysed azide–alkyne cycloaddition between substituted aromatic derivatives, comprising one or two terminal alkyne groups and a selection of aromatic azides.

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24

Sokhraneva, V. A., D. A. Yusupova, V. S. Boriskin, and N. V. Groza. "Obtaining substituted phenol derivatives with potential antimicrobial activity." Fine Chemical Technologies 17, no. 3 (2022): 210–30. http://dx.doi.org/10.32362/2410-6593-2022-17-3-210-230.

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Objectives. With the growing resistance of pathogenic microorganisms to antibiotics, the development of new antimicrobial drugs offering specific mechanisms of action becomes an urgent task. Only few antimicrobials offer a broad spectrum of activity against gram-positive and gram-negative bacteria, molds, and yeasts. In this regard, the purpose of the work was to develop methods for synthesizing biologically active derivatives of alkyl-substituted phenols (reactions at the hydroxy group) to study their biological effect.Methods. The synthesis of imidazole acetates of substituted phenols was ca

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25

Carpov, A., G. Mocanu, S. Chapelle, L. Merle, and G. Muller. "Chemically modified pullulans II. New hydrophobically substituted derivatives." Canadian Journal of Chemistry 73, no. 11 (1995): 1933–40. http://dx.doi.org/10.1139/v95-238.

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New hydrophobically substituted pullulans were synthesized, such as (i) neutral derivatives obtained by direct esterification of pullulan with adenine and thymine butyric acid and (ii) ionic derivatives obtained by amidation of carboxymethyl pullulan with aromatic amines (aminopyrene and adenine). Rheological measurements in dilute solutions allowed us to test the influence of the hydrophobic aromatic substituents and of the ionicity of the parent support on the nature of the hydrophobic associations in dilute solutions. The rheological studies on the pullulan derivatives revealed mainly intra

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26

McCulla, Ryan, Sara Omlid, Ankita Isor, Kathryn Sulkowski, S. Chintala, and John Petroff. "Synthesis of Aromatic Disulfonic Acids for Water-Soluble Dibenzothiophene Derivatives." Synthesis 50, no. 12 (2018): 2359–66. http://dx.doi.org/10.1055/s-0036-1591969.

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There is a need for efficient methods for the synthesis of water-soluble dibenzothiophene (DBT) and dibenzothiophene S-oxide (DBTO) derivatives to allow for the study of atomic oxygen in biological applications. Attaining water-solubility of aromatic compounds is effectively achieved through functionalization with sulfonic acid groups. Three approaches for the synthesis were considered. An indirect approach was unsuccessful. A modular approach was found to be highly effective for one DBTO disulfonic acid derivative (>99% pure). The direct approach was the most straightforward and highest-yi

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27

Jiao, Ti Feng, Xu Hui Li, Jing Xin Zhou, Jing Ya Liang, and Jing Ren. "Synthesis and Characterization of Some Functional Schiff Base Derivatives with Azobenzene Substituted Groups." Advanced Materials Research 197-198 (February 2011): 623–26. http://dx.doi.org/10.4028/www.scientific.net/amr.197-198.623.

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Some functional Schiff base derivatives with azobenzene substituted groups have been designed and synthesized from the reaction of aminoazobenzene with different aromatic aldehydes. It has been found that depending on the size of aromatic groups, the formed Schiff base derivatives showed different properties, indicating distinct regulation of molecular skeletons. UV and IR data confirmed commonly the formation of Schiff base as well as aromatic segment in molecular structures. Thermal analysis showed that the thermal stability of Schiff base molecules with naphthalene segment increased slightl

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28

Sklavounos, Constantine, Neil Demers, Joanne Lukaszewicz, and Mark Nowakowski. "Photoisomerization of Aromatic Doramectin Derivatives." Journal of Agricultural and Food Chemistry 42, no. 5 (1994): 1228–31. http://dx.doi.org/10.1021/jf00041a034.

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29

Hoke, Steven H., Jay Molstad, Gregory L. Payne, et al. "Aromatic hydrocarbon derivatives of fullerences." Rapid Communications in Mass Spectrometry 5, no. 10 (1991): 472–74. http://dx.doi.org/10.1002/rcm.1290051010.

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30

Bøgesø, Klaus P., and Michael Bech Sommer. "The effect of aromatic substitution on neuroleptic activity in 1-piperazino-3-phenylindans. A comparison based on a new D-2 receptor model with corresponding 10-piperazino-10,11-dihydrodibenzo[b,f]thiepins." Collection of Czechoslovak Chemical Communications 56, no. 11 (1991): 2456–67. http://dx.doi.org/10.1135/cccc19912456.

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The validity of a new dopamine D-2 receptor interaction model based on conformational analysis and least-squares superimposition studies of the indan derivative tefludazine and the thiepin derivative octoclothepin was further tested by comparison of the effect of aromatic substitution on D-2 antagonistic activity in two series of indan and thiepin derivatives. The indan series include new derivatives substituted in the 4-, 7-, 2’- and 3’-position. The substitution effects were largely parallel with one important exception: Only 6-substituted indans have significant neuroleptic activity while b

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Najm, Reem Suhail, Qader Abdullah Shannak, and Adil Hussein Dalaf. "Synthesis and Decoration of Aromatic Derivatives Nano Platelets by the Electric Method." Azerbaijan Pharmaceutical and Pharmacotherapy J 22, no. 2 (2023): 92–97. http://dx.doi.org/10.61336/appj/22-2-22.

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The present work consists of synthesizing a five-decorated aromatic amine derivatives. The decoration involves aromatic derivatives nano-platelets through an electric process using aromatic amine derivatives such as Sulfamethoxazole, \(2\)-Amino-\(6\)-chloro benzothiole, Trimethoprim, \(2\)-Amino benzoic acid, and \(4\)-Amino phenol. This process occurs in an electric cell containing platinum electrodes with a voltage of \(1.6\) volts, resulting in the production of compound \((R1,R5)\). These compounds were characterized and diagnosed using physical and spectroscopic methods, including infrar

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32

Buján, Elba I., and María Laura Salum. "A simple synthesis of benzimidazole N-oxides from 2-nitroaniline derivatives Scope and limitations." Canadian Journal of Chemistry 82, no. 8 (2004): 1322–27. http://dx.doi.org/10.1139/v04-083.

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Several benzimidazole N-oxide derivatives were synthesized in very good yield by heating at reflux the corresponding N-alkyl-2-nitroaniline derivative with NaOH in 60% 1,4-dioxanewater. The effect of substituents on the aromatic ring and amino group on the reaction is discussed.Key words: synthesis, benzimidazole N-oxides.

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33

Vadla, Balakishan, Naveen Puram, and Sailu Betala. "Novel trifluoromethyl-thieno[2,3-b]pyridine-2-carboxamide and Schiff’s base derivatives and their anticancer activity." Research Journal of Chemistry and Environment 27`, no. 9 (2023): 69–74. http://dx.doi.org/10.25303/2709rjce069074.

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A series of novel trifluoromethyl-thieno[2,3-b] pyridine-2-carboxamide 3a-h and Schiff’s base derivatives 5a-g was prepared starting from 6-methyl-2-oxo-4-(trifluoromethyl)-1,2-dihydropyridine-3-carb onitrile 1. Compound 1 on reaction with bromoethyl acetate produced ester derivative 2 on reaction with different amines produced amide derivatives 3. Ester derivative 2 which on reaction with hydrazine hydrate gave hydrazide 4 derivative. Further this compound on reaction with different substituted aromatic aldehydes formed Schiff’s base derivatives 5. All the products 3a-h and 5a-f were screened

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34

Farat, Oleg, Svetlana Varenichenko, Ekaterina Zaliznaya, and Victor Markov. "REARRANGEMENT OF SUBSTITUTED 1,3-BENZOXAZINES INTO XANTHENE-TYPE COMPOUNDS." Ukrainian Chemistry Journal 86, no. 2 (2020): 111–22. http://dx.doi.org/10.33609/0041-6045.86.2.2020.111-122.

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The rearrangement patterns of new 1,3-benzoxazines derivatives obtained by condensation of substituted salicylamides with cyclic ketones under the influence of Vilsmeier-Haack reagent has been studied. The influence of angel strain in a 4-membered spirocycle prevents the rearrangement of spiro [1,3-benzoxazine-2,1'-cyclobutan]-4(3H)-one under the action of a formylating agent. 1,3-Benzoxazines derivatives with ring sizes from 5- to 8-membered under the action of a formylating agent have formed formylxanthene derivative. Their formation reaction rate depends on the presence of electronegativity

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35

Krompiec, Stanisław, Aneta Kurpanik-Wójcik, Marek Matussek, Bogumiła Gołek, Angelika Mieszczanin, and Aleksandra Fijołek. "Diels–Alder Cycloaddition with CO, CO2, SO2, or N2 Extrusion: A Powerful Tool for Material Chemistry." Materials 15, no. 1 (2021): 172. http://dx.doi.org/10.3390/ma15010172.

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Phenyl, naphthyl, polyarylphenyl, coronene, and other aromatic and polyaromatic moieties primarily influence the final materials’ properties. One of the synthetic tools used to implement (hetero)aromatic moieties into final structures is Diels–Alder cycloaddition (DAC), typically combined with Scholl dehydrocondensation. Substituted 2-pyranones, 1,1-dioxothiophenes, and, especially, 1,3-cyclopentadienones are valuable substrates for [4 + 2] cycloaddition, leading to multisubstituted derivatives of benzene, naphthalene, and other aromatics. Cycloadditions of dienes can be carried out with extru

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Tu, Borong, Nana Cao, Bingjie Zhang, et al. "Synthesis and Biological Evaluation of Novel Fusidic Acid Derivatives as Two-in-One Agent with Potent Antibacterial and Anti-Inflammatory Activity." Antibiotics 11, no. 8 (2022): 1026. http://dx.doi.org/10.3390/antibiotics11081026.

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Fusidic acid (FA), a narrow-spectrum antibiotics, is highly sensitive to various Gram-positive cocci associated with skin infections. It has outstanding antibacterial effects against certain Gram-positive bacteria whilst no cross-resistance with other antibiotics. Two series of FA derivatives were synthesized and their antibacterial activities were tested. A new aromatic side-chain analog, FA-15 exhibited good antibacterial activity with MIC values in the range of 0.781–1.563 µM against three strains of Staphylococcus spp. Furthermore, through the assessment by the kinetic assay, similar chara

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Oslovsky, Vladimir, Ekaterina Savelieva, Mikhail Drenichev, Georgy Romanov, and Sergey Mikhailov. "Distinct Peculiarities of In Planta Synthesis of Isoprenoid and Aromatic Cytokinins." Biomolecules 10, no. 1 (2020): 86. http://dx.doi.org/10.3390/biom10010086.

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The biosynthesis of aromatic cytokinins in planta, unlike isoprenoid cytokinins, is still unknown. To compare the final steps of biosynthesis pathways of aromatic and isoprenoid cytokinins, we synthesized a series of nucleoside derivatives of natural cytokinins starting from acyl-protected ribofuranosyl-, 2′-deoxyribofuranosyl- and 5′-deoxyribofuranosyladenine derivatives using stereoselective alkylation with further deblocking. Their cytokinin activity was determined in two bioassays based on model plants Arabidopsis thaliana and Amaranthus caudatus. Unlike active cytokinins-bases, cytokinin

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Strøm, Morten B., Bengt Erik Haug, Øystein Rekdal, Merete L. Skar, Wenche Stensen, and John S. Svendsen. "Important structural features of 15-residue lactoferricin derivatives and methods for improvement of antimicrobial activity." Biochemistry and Cell Biology 80, no. 1 (2002): 65–74. http://dx.doi.org/10.1139/o01-236.

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This review focuses on important structural features affecting the antimicrobial activity of 15-residue derivatives of lactoferricins. Our investigations are based on an alanine-scan of a 15-residue bovine lactoferricin derivative that revealed the absolute necessity of two tryptophan residues for antimicrobial activity. This "tryptophan-effect" was further explored in homologous derivatives of human, caprine, and porcine lactoferricins by the incorporation of one additional tryptophan residue, and by increasing the content of tryptophan in the bovine derivative to five residues. Most of the r

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Kharbangar, Iadeishisha. "KF-Al2O3 catalyzed One-Pot Synthesis of Benzo[α]xanthene-11-ones". Spectrum: Science and Technology 9, № 1 (2022): 11–24. http://dx.doi.org/10.54290/spect/2022.v9.1.0002.

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KF-Al2O3 as a recyclable basic catalyst for the one-pot synthesis of benzoxanthenone derivatives by the reaction of aromatic aldehydes, β-naphthol and dimedone in the presence of a catalyst in ethanol under microwave irradiation. The protocol is environmentally benign, offering access to a range of benzoxanthenone derivaties in good to excellent yields.

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Kikushima, Kotaro, Haruka Koyama, Kazuki Kodama, and Toshifumi Dohi. "Nucleophilic Aromatic Substitution of Polyfluoroarene to Access Highly Functionalized 10-Phenylphenothiazine Derivatives." Molecules 26, no. 5 (2021): 1365. http://dx.doi.org/10.3390/molecules26051365.

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Nucleophilic aromatic substitution (SNAr) reactions can provide metal-free access to synthesize monosubstituted aromatic compounds. We developed efficient SNAr conditions for p-selective substitution of polyfluoroarenes with phenothiazine in the presence of a mild base to afford the corresponding 10-phenylphenothiazine (PTH) derivatives. The resulting polyfluoroarene-bearing PTH derivatives were subjected to a second SNAr reaction to generate highly functionalized PTH derivatives with potential applicability as photocatalysts for the reduction of carbon–halogen bonds.

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Ibrahim, Mohamed N., and Hazem K. Al - Deeb. "Synthesis, Characterization and Study of the Biological activity of Some Aldimines Derivatives." E-Journal of Chemistry 3, no. 4 (2006): 257–61. http://dx.doi.org/10.1155/2006/618718.

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A number of imines derivatives have been synthesized, they were obtained by condensation of aromatic aldehyde derivatives with primary aromatic amine derivatives. Their structures have been characterised by IR,1H NMR in addition to the elemental analysis. The biological activity of these imines (which are also known as Schiff bases) were examined against different type of microorganisms and they found to have considerable activity in comparison with the most commonly used antibiotics.

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Veličković, Dušan, Mowei Zhou, Jonathan S. Schilling, and Jiwei Zhang. "Using MALDI-FTICR-MS Imaging to Track Low-Molecular-Weight Aromatic Derivatives of Fungal Decayed Wood." Journal of Fungi 7, no. 8 (2021): 609. http://dx.doi.org/10.3390/jof7080609.

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Low-molecular-weight (LMW) aromatics are crucial in meditating fungal processes for plant biomass decomposition. Some LMW compounds are employed as electron donors for oxidative degradation in brown rot (BR), an efficient wood-degrading strategy in fungi that selectively degrades carbohydrates but leaves modified lignins. Previous understandings of LMW aromatics were primarily based on “bulk extraction”, an approach that cannot fully reflect their real-time functions during BR. Here, we applied an optimized molecular imaging method that combines matrix-assisted laser desorption ionization (MAL

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Mingyan, Yang, Wang Daoquan, and Wang Mingan. "The Electron Effect of Aromatic Group: Control Conformation of 2-Aromatic Cyclododecanone Derivatives." Current Organic Chemistry 24, no. 10 (2020): 1139–47. http://dx.doi.org/10.2174/1385272824999200607175514.

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2-Phenylcyclododecanone and 2-cyclohexylcyclododecanone derivatives were synthesized and characterized by 1H NMR, 13C NMR, HR-ESI-MS and X-ray diffraction. Their preferred conformations were analyzed by the coupling constants in the 1H NMR spectra and X-ray diffraction, which showed the skeleton ring of these derivatives containing [3333]-2-one conformation, and the phenyl groups were located at the side-exo position of [3333]-2-one conformation due to the strong π-π repulsive interaction between the π- electron of benzene ring and π-electron of carbonyl group. The cyclohexyl groups were locat

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Hashmi, Imran Ali, Wolfgang Frey, Ivo C. Ivanovc, and Willi Kantlehner. "One-pot, Three-component Synthesis of 7H-[1,3,4]Thiadiazolo[ 3,2-a]pyridines from 2-Phenacyl-[1,3,4]thiadiazole Derivatives and Arylmethylene-cyanoacetic Acid Derivatives." Zeitschrift für Naturforschung B 62, no. 10 (2007): 1298–304. http://dx.doi.org/10.1515/znb-2007-1011.

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Generally, arylmethylene-cyanoacetic acid derivatives react with enols and aromatic or heteroaromatic hydroxy compounds to afford 2-amino-4H-pyran derivatives of type 6. In contrast, a ring closure with the nitrogen atom of the thiadiazole ring occurs when 2-phenacyl-1,3,4-thiadiazoles (1a - d) act on derivatives of arylmethylene-cyanoacetic acid giving rise to the formation of 7H- [1,3,4]thiazolo[3,2-a]pyridine derivatives 5a - r. The same products are obtained if 2-phenacyl-1,3,4- thiadiazoles react with aromatic or heteroaromatic aldehydes and cyanoacetic acid derivatives. The constitution

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Zhou, Zhongyue, Mingfeng Xie, Zhandong Wang, and Fei Qi. "Determination of absolute photoionization cross-sections of aromatics and aromatic derivatives." Rapid Communications in Mass Spectrometry 23, no. 24 (2009): 3994–4002. http://dx.doi.org/10.1002/rcm.4339.

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Solà, Miquel, Jordi Poater, Deshuang Tu, Hong Yan, Clara Viñas, and Francesc Teixidor. "(Invited) 3D Aromaticity in Borane and Carborane Derivatives." ECS Meeting Abstracts MA2023-01, no. 11 (2023): 1240. http://dx.doi.org/10.1149/ma2023-01111240mtgabs.

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We will start discussing the difference between 3D aromatic species and those that should be described as 2D-aromatic with three-dimensional molecular structures (abbr. 2D-aromatic-in-3D) and not as truly 3D-aromatic [1]. Then, we will show the connection between archetypal polycyclic aromatic hydrocarbons (PAH) and closo boranes to conclude that the 4n+2 Wade-Mingos rule for three-dimensional closo boranes is connected to the (4n+2)π Hückel rule for bidimensional PAHs [2]. Next, we will analyze the aromaticity of closo and nido boranes and carboranes. Quantum chemical calculations reveal that

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Sarma, Madhushree Das, and Subhojit Ghosh. "Mechanochemistry in Action: Exploitation of Internal Acid Catalysis in Solvent-Free Synthesis of Imines and Evaluation of Radical Scavenging Activities of Imino Derivatives." Asian Journal of Chemistry 33, no. 2 (2021): 345–49. http://dx.doi.org/10.14233/ajchem.2021.23009.

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Mechanochemical protocol has been exploited to accomplish the synthesis of imino derivatives from aromatic amines with acidic functionalities and different aromatic aldehydes in excellent to nearly quantitative yields. Presence of acidic groups in the aromatic amines has been found to have profound influence on the course of the reaction. The prepared imines were screened for in vitro antioxidant activity using 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical. Some of the prepared imino derivatives displayed good to moderate antioxidant property when compared with standard natural antioxidant (L-a

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Cao, Ban-Peng, Gang-Ren Huang, Xue-Ping Tao, Hiroaki Okamoto, and Qiang Xiao. "Facile Synthesis of Semifluoroalkyl Triazole Derivatives for the Separation of Oil and Water." Journal of Nanomaterials 2022 (March 28, 2022): 1–4. http://dx.doi.org/10.1155/2022/2856977.

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Semifluoroalkyl triazole derivatives have been facilely synthesized by copper-catalyzed alkyne-azide cycloaddition reaction, which can gelate some organic solvents at weight concentrations of down to 0.5 wt.%. The gelation abilities of triazole derivatives with/without a semifluoroalkyl and an aromatic group were fully characterized. We found that triazole derivatives containing semifluoroalkyl chains and aromatic groups are typically effective in forming supramolecular organogels. Moreover, the gelator in ethyl acetate can solidify oil from an oil-water biphasic mixture for about 1 min.

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V. Kanchana, L. Mayavan, A. Kistan, and S. Mohan. "SPECTRAL ELUCIDATION, ANTIMICROBIAL AND ANTIOXIDANT STUDY OF NEWLY SYNTHESIZED PYRAZOLINE DERIVATIVES." RASAYAN Journal of Chemistry 17, no. 01 (2024): 281–87. http://dx.doi.org/10.31788/rjc.2024.1718720.

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The preparation of Chalcones and Pyrazoline derivatives from different aromatic ketones and substituted aldehydes is detailed. Chalcones were produced by reacting aldehydes with substituted aromatic ketones, such as acetophenones, in the Claisen-Schmidt condensation reaction. Cyclohexenone derivatives are produced when ethyl aceto aromatic ketones undergo base-catalyzed cyclo-condensation to Chalcones under microwave radiation. The synthesized compounds are characterized using spectrum techniques from 1H NMR, 13C NMR, and IR. These are examined for their antioxidant qualities as well as their

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Arii, Hidekazu, Takashi Kurihara, Kunio Mochida, and Takayuki Kawashima. "Silylium ion-promoted dehydrogenative cyclization: synthesis of silicon-containing compounds derived from alkynes." Chem. Commun. 50, no. 50 (2014): 6649–52. http://dx.doi.org/10.1039/c4cc01648c.

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