Temperature-Controlled Chalcogenation and Chalcogenocyanation of Imidazopyridines in Water under Transition Metal-Free Conditions
作者:Yu-Shen Zhu、Yuting Xue、Wannian Liu、Xinju Zhu、Xin-Qi Hao、Mao-Ping Song
DOI:10.1021/acs.joc.0c01035
日期:2020.7.17
A sustainable and transitionmetal-freeapproach for C3 chalcogenation and chalcogenocyanation of imidazopyridines with KXCN (X = S or Se) has been developed under mild conditions. Importantly, this reaction was performed in the presence of catalytic iodine in aqueous medium, which afforded either chalcogenated or chalcogenocyanated imidazopyridines under temperature control. The current protocol featured
Triselenium dicyanide from malononitrile and selenium dioxide. One-pot synthesis of selenocyanates
作者:Andrey V. Kachanov、Oleg Yu. Slabko、Olga V. Baranova、Evgenia V. Shilova、Vladimir A. Kaminskii
DOI:10.1016/j.tetlet.2004.04.071
日期:2004.5
Triselenium dicyanide is formed by the interaction of malononitrile and selenium dioxide in dimethylsulfoxide or dimethylformamide. Addition of aromatic amines, indoles and some active methylene compounds to this reaction mixture gives the corresponding selenocyanates in one-pot. (C) 2004 Elsevier Ltd. All rights reserved.
Frolov, A. N.; Smirnov, E. V.; Kul'bitskaya, O. V., Journal of Organic Chemistry USSR (English Translation), 1980, vol. 16, p. 1963 - 1969
作者:Frolov, A. N.、Smirnov, E. V.、Kul'bitskaya, O. V.、El'tsov, A. V.