Treatment of 1-propenyltriphenylsilane with n-BuLi in THF-HMPA provides (triphenylsilyl)allyl anion which is identical with an anion derived from 2-propenyltriphenylsilane and base. Generation of (triphenylgermyl)allyl anion is also described. Addition of alkyl halides or carbonyl compounds to these anions gives the corresponding adducts regioselectively.
在 THF-HMPA 中用 n-BuLi 处理
1-丙烯基三苯基
硅烷提供(三苯基甲
硅烷基)烯丙基阴离子,该阴离子与衍生自 2-
丙烯基三苯基
硅烷和碱的阴离子相同。还描述了(
三苯基锗基)烯丙基阴离子的生成。将烷基卤化物或羰基化合物加成到这些阴离子上会区域选择性地产生相应的加合物。