Results 71 to 80 of about 26,379 (326)
Molecules, 2010 A microwave-induced iodine-catalyzed simple, rapid and convenient synthesis of different types of quinoxalines via condensation of 1,2-diamines with 1,2-dicarbonyl compounds has been accomplished with an excellent yield.
Debasish Bandyopadhyay +3 more
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Vanillin: A Promising Biosourced Building Block for the Preparation of Various Heterocycles
Frontiers in Chemistry, 2022 The preparation of heterocyclic compounds often involves the use of petroleum-based or non-renewable sources. Considering the actual societal and environmental awareness towards sustainable chemistry, new and green sources of organic carbon are sought ...
David Gendron
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Quinoxaline: A comprehension of current pharmacological advancement in medicinal chemistry
European Journal of Medicinal Chemistry Reports, 2022 Quinoxaline is a fused heterocycle ring template present in diverse pharmacophore and widely used in medicinal chemistry. Owing to its vast pharmaceutical profile, several quinoxalines analogous displayed their distinct pharmacological activities. In the
Suresh Kumar Suthar +4 more
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Palladium-catalyzed difluoromethylation of heteroaryl chlorides, bromides and iodides. [PDF]
, 2017 A palladium-catalyzed difluoromethylation of a series of heteroaryl chlorides, bromides and iodides under mild conditions is described. A wide range of heteroaryl halides such as pyridyl, pyrimidyl, pyrazyl, funanyl, thienyl, pyazolyl, imidazolyl ...
Gu, Yang +4 more
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Results in Chemistry, 2023 Medicinal chemistry is a basic science that involves identification, synthesis and development of new drugs for therapeutic use. Biological importance of heterocycles makes them more crucial in pharmaceutical industries.In this work heterocyclics like ...
Geethavani Meka, Ramakrishna Chintakunta
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New opportunities for the synthesis of quinoxaline derivatives
Chimica Techno Acta, 2019 Convenient methods for the synthesis of quinoxaline derivatives with the use of nucleophilic aromatic substitution of hydrogen in heteroaromatic part of molecule in conditions of the acid catalysis were elaborated.
Olga S. Koptyaeva +4 more
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New quinoxaline derivatives as potential MT₁ and MT₂ receptor ligands. [PDF]
, 2012 Ever since the idea arose that melatonin might promote sleep and resynchronize circadian rhythms, many research groups have centered their efforts on obtaining new melatonin receptor ligands whose pharmacophores include an aliphatic chain of variable ...
Aldana, I. (Ignacio) +7 more
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Functionalization of diazines and benzo derivatives through deprotonated intermediates.
, 2008 International audienceThis critical review targets as a readership researchers generally oriented toward organic synthesis and in particular those active in heterocyclic chemistry.
Chevallier, Floris, Mongin, Florence
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Small Band Gap Polymers Synthesized via a Modified Nitration of 4,7-Dibromo-2,1,3-benzothiadiazole [PDF]
, 2010 The nitration of 4,7-dibromo-2,1,3-benzothiadiazole was modified by using CF3SO3H and HNO3 as the nitrating agent, and the related yield was improved greatly.
Andersson, Mats R. +7 more
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Beilstein Journal of Organic Chemistry, 2019 The LANCA three-component reaction of lithiated alkoxyallenes LA, nitriles N and carboxylic acids CA leads to β-ketoenamides KE in good to excellent yields.
Tilman Lechel +4 more
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