Platinum-catalyzed elimination-addition reactions of trisilylethenes

Article abstract of DOI:10.1016/0022-328X(91)80078-X

(E)-1-Hexyldimethylsilyl-1,2-bis(trimethylsilyl)ethene (1) and (E)-1-(3'-butyl-1',3'-tetramethyldisiloxanyl)-1,2-bis(trimethylsilyl)ethene (7) undergo isomerization-redistribution reactions catalyzed by platinum.Each of them is converted into its (Z)-isomer and ethenes bearing one trimethylsilyl group and two substituted silyl groups as major products.The proposed mechanism for the reactions involves a sequence of eliminations of hydrosilanes from the ethenes and re-addition to them.Oxygen greatly affects the reaction apparently accelerating anti-elimination of hydrosilanes.