Gold-Catalyzed Three-Component Tandem Process: An Efficient and Facile Assembly of Complex Butenolides from Alkynes, Amines, and Glyoxylic Acid
作者:Qiang Zhang、Ming Cheng、Xiaoyu Hu、Bo-Gang Li、Jian-Xin Ji
DOI:10.1021/ja101804p
日期:2010.6.2
An efficient and facile gold-catalyzed three-component tandem process for the assembly of two types of highly functionalized butenolides has been developed. In this reaction system, more than four chemical bonds are formed by a single gold catalyst. The present tandem protocol includes a direct coupling of alkynes, amines, and glyoxylic acid and subsequent exclusively endo-selective cycloisomerization