Direct Transformation of Terminal Alkynes into Amidines by a Silver-Catalyzed Four-Component Reaction
作者:Binbin Liu、Yongquan Ning、Matteo Virelli、Giuseppe Zanoni、Edward A. Anderson、Xihe Bi
DOI:10.1021/jacs.8b11039
日期:2019.1.30
An unprecedented conversion of terminal alkynes into N-sulfonimidamides (amidines) is reported by a silver-catalyzed, one-pot, four-component reaction with TMSN3, sodium sulfinate, and sulfonylazide. The reaction scope includes both aromatic and aliphatic alkynes. A possible cascade reaction mechanism, consisting of alkyne hydroazidation, sulfonyl radical addition, 1,3-dipolar cycloaddition by TMSN3