Results 21 to 30 of about 212,860 (340)

CHEMICAL PROPERTIES AND APPLICATIONS OF NITROPYRIDINES

Siberian Journal of Life Sciences and Agriculture, 2023
Background. Pyridines are one of the most common heterocycles, the derivatives of which are widely used in pharmaceuticals, agrochemistry, and also in the production of new materials.
Evgeniya V. Ivanova, Irina I. Surova, Maria B. Nikishina, Loik G. Mukhtorov, Irina V. Shahkeldyan, Yuri M. Atroshchenko   +5 more
doaj   +1 more source

Pyridine-Based Heterocycles. Synthesis of New Pyrido [4',3':4,5]thieno[2,3-d]pyrimidines and Related Heterocycles

Molecules, 2010
The synthesis of the title compounds was achieved using ethyl 2-amino-6-methyl-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate (1) as starting material.
Hussein El-Kashef, Abdel-Rahman Farghaly, Ahmed Al-Hazmi, Thierry Terme, Patrice Vanelle   +4 more
doaj   +1 more source

The Synthesis of Diverse Annulated Pyridines with 6-Membered Functionalized Saturated Cycles for Medical Chemistry Research

Журнал органічної та фармацевтичної хімії, 2023
The article describes a set of pyridines annulated with functionalized 6-membered saturated rings, which are attractive building blocks for the synthesis of diversified compound libraries in medical chemistry.
Dmytro V. Yehorov, Andrii I. Subota
doaj   +1 more source

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

Synthesis of Chitosan-La₂O₃ Nanocomposite and Its Utility as a Powerful Catalyst in the Synthesis of Pyridines and Pyrazoles

Molecules, 2021
Recently, the development of nanocatalysts based on naturally occurring polysaccharides has received a lot of attention. Chitosan (CS), as a biodegradable and biocompatible polysaccharide, is considered to be an excellent template for the design of a ...
Khaled D. Khalil, Sayed M. Riyadh, Mariusz Jaremko, Thoraya A. Farghaly, Mohamed Hagar   +4 more
doaj   +1 more source

Skeletal editing of pyridines through atom-pair swap from CN to CC

Nature Chemistry
Skeletal editing is a straightforward synthetic strategy for precise substitution or rearrangement of atoms in core ring structures of complex molecules; it enables quick diversification of compounds that is not possible by applying peripheral editing ...
Qiang Cheng, Debkanta Bhattacharya, Malte Haring, Hui Cao, Christian Mück‐Lichtenfeld, A. Studer   +5 more
semanticscholar   +1 more source

Synthesis, Molecular Docking Study, and Cytotoxicity Evaluation of Some Novel 1,3,4-Thiadiazole as Well as 1,3-Thiazole Derivatives Bearing a Pyridine Moiety

Molecules, 2022
Pyridine, 1,3,4-thiadiazole, and 1,3-thiazole derivatives have various biological activities, such as antimicrobial, analgesic, anticonvulsant, and antitubercular, as well as other anticipated biological properties, including anticancer activity.
Amr S. Abouzied, Jehan Y. Al-Humaidi, Abdulrahman S Bazaid, Husam Qanash, Naif K. Binsaleh, Abdulwahab Alamri, Sheikh Muhammad Ibrahim, Sobhi M. Gomha   +7 more
doaj   +1 more source

Recent Strategies in the Nucleophilic Dearomatization of Pyridines, Quinolines, and Isoquinolines

Chemical Reviews
Dearomatization reactions have become fundamental chemical transformations in organic synthesis since they allow for the generation of three-dimensional complexity from two-dimensional precursors, bridging arene feedstocks with alicyclic structures. When
Marcos Escolano, Daniel Gaviña, Gloria Alzuet-Piña, Santiago Díaz-Oltra, María Sánchez-Roselló, C. Pozo   +5 more
semanticscholar   +1 more source

Electron-Deficient Acetylenes as Three-Modal Adjuvants in S_N^H Reaction of Pyridinoids with Phosphorus Nucleophiles

Molecules, 2021
Publications covering a new easy metal-free functionalization of pyridinoids (pyridines, quinolines, isoquinolines, acridine) under the action of the system of electron-deficient acetylenes (acetylenecarboxylic acid esters, acylacetylenes)/P-nucleophiles
Boris A. Trofimov, Pavel A. Volkov, Anton A. Telezhkin   +2 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