Abstract
With [RuCl2(p-cymene)]2 as a catalyst, extremely high regio- and stereoselectivity was observed in the hydrosilylation reaction of various terminal alkynes under mild conditions to afford β-(Z)-vinylsilanes in excellent yields. A dramatic directing effect was also observed when alkynes having a hydroxyl group at the β position to the triple bond were employed as a substrate, and in these cases regioisomeric α-vinylsilanes were generated with excellent selectivity.