有机锡二聚体对醛的选择性催化  

Hydrosilylation of Aldehydes Catalyed Selectively by μ-Hydroxo Organotin Dimer

作　　者：张正华[1] 徐伟箭[1] 熊远钦[1] 安德烈[1] 彭志鸿[1] 

机构地区：[1]湖南大学化学化工学院,长沙410082

出　　处：《高等学校化学学报》2008年第2期301-304,共4页Chemical Journal of Chinese Universities

摘　　要：以Bu2SnO与CF3SO3H(TfOH)直接反应合成了有机锡二聚体[Bu2Sn(OH)(OTf)(H2O)]2,以[Bu2Sn(OH)(OTf)(H2O)]2为催化剂考察了醛的硅氢化反应.与传统的路易斯酸催化剂相比,有机锡二聚体催化剂不仅具有合成简单、贮存容易、使用方便、易于分离、用量少和催化效率高等优点,而且对醛基的还原催化具有很高的选择性,且不受分子内和反应体系中其它羰基化合物或可还原基团的影响.A kind of μ-hydroxo organotin dimmer [ Bu2Sn （OH） （OTf） （H2O） ] 2 （ 1 ） was prepared from Bu2SnO and CF3SO3H（TfOH）, and the hydrosilylation of aldehydes catalyzed by compound 1 were studied. The conditions of hydrosilylation catalyzed by compound 1 were discussed. Compound 1 can catalyze hydrosilylation of aromatic aldehydes as well as aliphatic aldehydes without byproducts such as ether or alkyl forming. Compared with conventional Lewis acid catalysts,μ-hydroxo organotin dimer as an efficient catalyst has some merit as follow： the catalyst can be synthesized in a simple way; due to its stability in water and air, the catalyst can be saved and used conveniently; the catalyst concentration is very low and high chemoselectivity is readily attained. The hydrosilylation of aldehydes can be catalyzed exclusively but the other carbonyl compounds and some reductive groups in one molecular or in one reaction system couldn＇t be catalyzed.

关 键 词：有机锡二聚体 选择性催化剂 醛 硅氢化反应 

分 类 号：O627.42[理学—有机化学]