Electrochemical reduction of N-(2-nitro-4-R-phenyl)pyridinium salts using redox-mediators
作者:A. A. Sokolov、R. S. Begunov、M. A. Syroeshkin、L. V. Mikhal’chenko、M. Yu. Leonova、V. P. Gul’tyai
DOI:10.1007/s11172-016-1286-2
日期:2016.1
Electrochemical reduction of N-(2-nitroaryl)pyridinium chlorides was accomplished in acidic aqueous alcoholic medium in the galvanostatic mode using tin, titanium, vanadium, and iron chlorides as redox-mediators. The use of SnCl2 as a mediator catalyst made it possible to shorten the electrosynthesis time as compared to the direct electroreduction on an electrode and prepare the intramolecular cyclization
Effect of temperature and the nature of protonating agent on reduction of N-(2-nitroaryl)pyridinium chlorides
作者:R. S. Begunov、A. A. Sokolov、A. A. Sazhina
DOI:10.1134/s1070428015080266
日期:2015.8
Effect of reducer’s nature on the reduction of N-(2-nitrophenyl)pyridinium chlorides
作者:R. S. Begunov、A. A. Sokolov、T. V. Shebunina
DOI:10.1134/s1070428013050291
日期:2013.5
Synthesis of Pyrido[1,2-a]benzimidazoles by Electroreductive Heterocyclization of 1-(2-nitroaryl)pyridinium Chlorides
作者:Aleksandr A. Sokolov、Mikhail A. Syroeshkin、Roman S. Begunov、Nadezhda N. Rusakova、Vadim P. Gultyai
DOI:10.1016/j.mencom.2012.11.011
日期:2012.11
The electrochemical reduction of N-(2-nitro-4-R-phenyl)pyridinium chlorides (R = CF3, CN, CO2Et) at a lead cathode in HCl/(PrOH)-O-i/H2O affords the corresponding 7-R-pyrido[1,2-a]benzimidazoles in 70-94% yields.