trimethysilyl chloride and a bicyclic 1,1-dibromocyclopropane in the presence of bulk magnesium affords 1-trimethylsilyl-1-bromocyclopropanes in 72–93% yield. The sonochemical reactions proceed stereoselectively to afford as the major product the product in which the trimethylsilyl group is cis to the hydrogen atoms at the ring juncture.
在存在大量
镁的情况下,用超声波照射同时含有三甲基甲
硅烷基
氯和双环1,1-二
溴环丙烷的THF溶液,可以以72-93%的收率得到1-三甲基甲
硅烷基-1-
溴环丙烷。声
化学反应立体选择性地进行,以提供主要产物,其中三甲基甲
硅烷基在环结处与氢原子成顺式。