Highly Efficient and Practical Thiocyanation of Imidazopyridines Using an<i>N</i>-Chlorosuccinimide/NaSCN Combination
作者:Hailei Zhang、Qian Wei、Shiqiang Wei、Jingping Qu、Baomin Wang
DOI:10.1002/ejoc.201600485
日期:2016.7
C–H thiocyanation of imidazo[1,2-a]pyridines, and a practical sequential one-pot condensation/C–H thiocyanation process, using a combination of N-chlorosuccinimide/NaSCN for the synthesis of 3-thiocyanatoimidazo[1,2-a]pyridines have been developed. The reactions are environmentally friendly, and easy to carry out. They use readily available starting materials and mild reaction conditions, show a wide
Catalyst and additive-free regioselective oxidative C–H thio/selenocyanation of arenes and heteroarenes with elemental sulfur/selenium and TMSCN
作者:Chengtao Feng、Ya Peng、Guangrong Ding、Xiangxiao Li、Chang Cui、Yizhe Yan
DOI:10.1039/c8cc07905f
日期:——
A regioselective oxidative C–H thio/selenocyanation of arenes and heteroarenes with TMSCN and elemental sulfur/selenium was demonstrated under catalyst-free and additive-free conditions. Dimethyl sulfoxide (DMSO) was employed as the mild oxidant as well as the solvent. The reaction is operationally simple and scalable with a broad substrate scope.