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。