Stereoselective Synthesis of Vinylsilanes by a Gold(I)-Catalyzed Acetylenic Sila-Cope Rearrangement
作者:Yoshikazu Horino、Michael R. Luzung、F. Dean Toste
DOI:10.1021/ja0636800
日期:2006.9.1
tri-tert-butylphosphinegold(I) serves as a catalyst in the sila-Cope rearrangement of acetylenic allylsilanes. When phenol is employed as a nucleophile, the reaction allows for the stereoselective synthesis of vinylsilanes. Alternatively, use of methanol as a nucleophile leads to cyclic vinylsilanes, which can be viewed as latent vinylsilanes that are revealed on treatment with a mild Lewis acid. Thus, both of these
阳离子三叔丁基膦金 (I) 在炔属烯丙基硅烷的 sila-Cope 重排中用作催化剂。当苯酚用作亲核试剂时,该反应允许乙烯基硅烷的立体选择性合成。或者,使用甲醇作为亲核试剂会产生环状乙烯基硅烷,可以将其视为潜在的乙烯基硅烷,用温和的路易斯酸处理后会显露出来。因此,这两种试剂都可用作通过过渡金属催化的交叉偶联反应立体选择性合成三取代烯烃的有用试剂。