Stereoselective three-component cascade synthesis of α-substituted 2,4-dienamides from <i>gem</i>-difluorochloro ethanes
作者:Shyamsundar Das、Nakeun Ko、Eunsung Lee、Sang Eun Kim、Byung Chul Lee
DOI:10.1039/c9cc07100h
日期:——
Herein, we describe a new transition metal-free Claisen rearrangement for the synthesis of α-substituted 2,4-dienamides. The one-pot, stereoselective three-component cascade reaction between a series of propargyl alcohols, amines, and gem-difluorochloro ethane derivatives afforded various polysubstituted 2,4-dienamides in good yields. This synthetic method for 1,1-captodative dienes, α-substituted