Gold-Catalyzed Cycloisomerization of Siloxy Enynes to Cyclohexadienes
作者:Liming Zhang、Sergey A. Kozmin
DOI:10.1021/ja046112y
日期:2004.9.1
We have described the first Au-catalyzed cycloisomerization of 1-siloxy-5-en-1-ynes. The reaction is efficiently catalyzed by AuCl (1 mol %) to afford siloxy cyclohexadienes, which can be readily converted to the corresponding 1,2- and 1,3-cyclohexenones. The catalytic process displays a broad substrate scope and exceedingly mild reaction conditions (30 min, 20 degrees C). The presence of a siloxy