α,β-不饱和醛的均相催化氢硅化反应

Hydrosilation of α, β-Unsaturated Aldehydes

氢硅化反应是形成硅碳键和还原羰基化合物的一种重要方法,待别是在选择性还原方面应用甚为广泛,三（三苯基膦）氯化铑是羰基化合物进行氢硅化反应的最有效催化剂。α,β-不饱和醛、酮的氢硅化反应既可发生1,2加成,也可发生1,4加成,加成位置的选择性取决于硅氢化物的结构,三烃基桂烷（R3SiH）

Homogeneous catalytic hydrosilation of α,β-unsaturated aldehydes was studied bypseudo lst order reaction of kineties and monitored by GC. Rate constants, activation en-ergy and activation entrop were determined. The relationship between reactivity and mole-culat structure of reactants was discussed.