Silver-Mediated Direct C–H Cyanation of Terminal Alkynes with <i>N</i>-Isocyanoiminotriphenylphosphorane
作者:Hannan Wang、Pengbing Mi、Wanjun Zhao、Ravi Kumar、Xihe Bi
DOI:10.1021/acs.orglett.7b02743
日期:2017.10.20
A direct cyanation of terminal alkynes for the synthesis of propionitrile derivatives, with the aid of silver salt using water additive, has been achieved. The cyano source used is N-isocyanoiminotriphenylphosphorane, which is nontoxic, safe, and easy to handle. This protocol is characterized by its operational simplicity, high efficiency with excellent yields, broad substrate scope, and greater functional group tolerance.