Cs2CO3 promoted direct C-H bond sulfenylation of imidazo[1,2-a]pyridines and related heteroarenes in ionic liquid
An efficient and novel method was developed for the synthesis of 3-sulfenyl imidazo[1,2-a]pyridines in good to excellent yields via a Cs2CO 3 promoted direct sulfenylation of imidazo[1,2-a]pyridines. The reaction proceeds smoothly with a wide range of structurally diverse heteroarenes and disulfides. This protocol is environmentally friendly because it is free of transition-metal catalysts and utilizes aryl-substituted imidazolium-based ionic liquid rather than volatile organic solvents.
Gao, Zhaochang,Zhu, Xun,Zhang, Ronghua
p. 19891 - 19895
(2014/05/20)
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