Compounds having a vinyldimethylsilyl group at both terminals have been successfully cyclized by ruthenium hydride catalysts to give selectively disilacycles of various ring sizes via a metathetical reaction, i.e. ethene elimination from the two terminal vinyl groups, not involving metallocarbeneâmetallacyclobutane type intermediates.
在氢化
钌催化剂的作用下,两个末端都带有
乙烯基二甲基
硅烷基团的化合物成功地发生了环化反应,通过元反应(即从两个末端
乙烯基基团中消除
乙烯,不涉及茂
金属
环丁烷类中间体)选择性地生成了各种环尺寸的二二甲基环。