Catalytic Hydrosilylation of the Carbonyl Functionality via a Transient Nickel Hydride Complex

被引:115
作者
Tran, Ba L. [1 ]
Pink, Maren [1 ]
Mindiola, Daniel J. [1 ]
机构
[1] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA
关键词
H OXIDATIVE ADDITION; ASYMMETRIC HYDROSILYLATION; ENANTIOSELECTIVE HYDROSILYLATION; HOMOGENEOUS CATALYSIS; ALPHA; BETA-UNSATURATED KETONES; SILICON HYDRIDES; REDUCTION; LIGANDS; ALKYL; HYDROSILATION;
D O I
10.1021/om801160j
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
We report the syntheses and characterization of two new sterically demanding chelate ligands, denoted PNMe3 (N-(2-(diisopropylphosphino)-4-methylphenyl)-2,4,6-trimethylanilide) and PNiPr3 (N-(2-(diisopropylphosphino)-4-methylphenyl)-2,4,6-triisopropylanilide), as well as the preparation of their nickel(II) halide complexes [(PNiPr3)Ni(mu(2)-Br)](2) (1) and [(PNMe3)Ni(mu(2)-Cl)](2) (2). The combination of complex 1 with (KOBu)-Bu-t and Et3SiH as the hydride source can promote the hydrosilylation of a variety of carbonyl compounds in excellent yield and in a catalytic manner. The reactivity for a scope of substrates and a plausible mechanism along the hydrosilylation reaction are discussed in this work.
引用
收藏
页码:2234 / 2243
页数:10
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