2 + 1] cycloaddition takes place in the rhodium-catalyzed reaction of 1,6-enynes with borylsilanes bearing an alkoxy group on the silicon atoms, which react as synthetic equivalents of silylene. The reaction proceeds efficiently in 1,2-dichloroethane at 80–110 °C in the presence of a rhodium catalyst bearing bis(diphenylphosphino)methane (DPPM) as a ligand to afford 1-silacyclopent-2-enes in good to
烯烃-
炔烃-亚甲基[2 + 2 +1]的环加成反应是在
铑催化的1,6-
炔烃与在
硅原子上带有烷氧基的
硼烷基
硅烷的反应中进行的,这些
硅烷作为合成的甲
硅烷基等效物进行反应。在载有双(
二苯基膦基)
甲烷(
DPPM)作为
配体的
铑催化剂存在下,反应在80-110°C的
1,2-二氯乙烷中有效进行,从而以高收率或高收率得到1-silacyclopent-2-enes。