Results 21 to 30 of about 24,216 (244)

Synthesis of Some New 1,3,4-Thiadiazole, Thiazole and Pyridine Derivatives Containing 1,2,3-Triazole Moiety

Molecules, 2017
In this study, 1-(5-Methyl-1-(p-tolyl)-1H-1,2,3-triazol-4-yl)ethan-1-one, was reacted with Thiosemicarbazide, alkyl carbodithioate and benzaldehyde to give thiosemicarbazone, alkylidenehydrazinecarbodithioate and 3-phenylprop-2-en-1-one-1,2,3-triazole ...
Nadia A. Abdelriheem, Ali M. M. Mohamed, Abdou O. Abdelhamid   +2 more
doaj   +1 more source

Substituted pyridines

Chemistry of Heterocyclic Compounds, 1966
A number of amides and hydrazides of 4-phenyl-2,5-pyridine dicarboxylic acids are synthesized. © 1966 The Faraday Press, Inc.
Prostakov N.S., Mikheeva N.N., Phalgumani D., Mathew K.J.   +3 more
openaire   +3 more sources

New Aspects of the Reaction of Thioacetamide and N-Substituted Maleimides

Molecules, 2022
N-Arylmaleimides are universal substrates for the synthesis of various heterocyclic compounds with a wide spectrum of biological activity. However, their reactions with thioacetamides have not been comprehensively studied.
Yulia V. Aseeva, Nadezhda V. Stolpovskaya, Dmitriy Y. Vandyshev, Vladimir B. Sulimov, Mikhail A. Prezent, Mikhail E. Minyaev, Khidmet S. Shikhaliev   +6 more
doaj   +1 more source

COMPARATIVE SOLUBILITIES IN WATER, IN PYRIDINE AND IN AQUEOUS PYRIDINE. [PDF]

Journal of the American Chemical Society, 1917
n ...
openaire   +1 more source

Intramolecular carbolithiation of N-allyl-ynamides: an efficient entry to 1,4-dihydropyridines and pyridines – application to a formal synthesis of sarizotan

Beilstein Journal of Organic Chemistry, 2012
We have developed a general synthesis of polysubstituted 1,4-dihydropyridines and pyridines based on a highly regioselective lithiation/6-endo-dig intramolecular carbolithiation from readily available N-allyl-ynamides.
Wafa Gati, Mohamed M. Rammah, Mohamed B. Rammah, Gwilherm Evano   +3 more
doaj   +1 more source

Oxidative Aromatization of Some 1,4-Dihydropyridine Derivatives Using Pyritic Ash in Eco-Sustainable Conditions

Chemistry Proceedings, 2023
Hantzsch 1,4-dihydropyridines (Hantzsch 1,4-DHP), have been utilized as starting material in organic synthesis. In addition, several 1,4-DHP based drugs (Nifedipine, Niguldipine, Amlodepine besylate) have been recognized for the treatment of ...
Juan Enrique Tacoronte Morales, Carla Bernal Villavicencio, Xavier Leopoldo Gracia Cervantes, Maria Elizabeth Canchingre, Maria Teresa Cabrera Pedroso   +4 more
doaj   +1 more source

Iron-Catalyzed Sulfonylmethylation of Imidazo[1,2-α]pyridines with N,N-Dimethylacetamide and Sodium Sulfinates

Molecules
Functionalized imidazo[1,2-α]pyridines are important scaffolds in pharmaceuticals. Herein, we present an efficient 3-sulfonylmethylation protocol for imidazo[1,2-α]pyridines by sodium sulfinates in DMA and H2O (2:1) via an FeCl3-catalyzed three-component
Shengnan Sun, Hexia Ye, Haibo Liu, Junchen Li, Xiaojing Bi   +4 more
doaj   +1 more source

Über 1-Aza-bicyclo-heptane

CHIMIA, 1976
A simple way to synthesize 7-phenyl-1-aza-bicyclo[2,2,1]heptanes out of 4-benzoyl-pyridines is described. The corresponding 3- benzoyl-pyridines did not yield the expected 7-phenyl-1-azabicyclo [3,1,1] heptanes.
A. Marxer
doaj   +1 more source

New Pyridine Derivatives from Essential Oils

CHIMIA, 1992
Four new pyridines 1–4 have been isolated from jonquil absolute and their structures confirmed by synthesis. These pyridines also occur in other essential oils.
Bruno Maurer, Arnold Hauser
doaj   +2 more sources

Introduction of the difluoromethyl group at the meta- or para-position of pyridines through regioselectivity switch

Nature Communications
Difluoromethyl pyridines have gained significant attention in medicinal and agricultural chemistry. The direct C−H-difluoromethylation of pyridines represents a highly efficient economic way to access these azines.
Pengwei Xu, Zhe Wang, Shu-Min Guo, Armido Studer   +3 more
doaj   +1 more source