Cobalt Carbonyl-Based Catalyst for Hydrosilylation of Carboxamides

被引:67
作者
Dombray, Thomas [1 ]
Helleu, Camille [1 ]
Darcel, Christophe [1 ]
Sortais, Jean-Baptiste [1 ]
机构
[1] Univ Rennes 1, Inst Sci Chim Rennes Team Organometall Mat & Cata, Ctr Catalysis & Green Chem, UMR CNRS 6226, F-35042 Rennes, France
关键词
amides; amines; cobalt; hydrosilylation; reduction; CARBOXYLIC-ACID DERIVATIVES; ASYMMETRIC HYDROSILYLATION; TERTIARY-AMINES; ENANTIOSELECTIVE HYDROSILYLATION; EFFICIENT HYDROSILYLATION; SELECTIVE REDUCTION; SECONDARY AMIDES; SILANE REDUCTION; IRON; COMPLEX;
D O I
10.1002/adsc.201300664
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
The cobalt carbonyl [Co-2(CO)(8)] complex is employed as a useful catalyst for the reduction of tertiary amides to the corresponding tertiary amines using 1,1,3,3-tetramethyldisiloxane (TMDS) and poly(methylhydrosiloxane) (PMHS) as silane reagents under thermal (100 degrees C) or photo-assisted conditions (UV, 350nm at room temperature). Of particular interest, a low catalytic amount (0.5mol%) of [Co-2(CO)(8)] is used to perform the reaction with 2.2equiv. of PMHS at 100 degrees C for 3h. This reaction is the first example of a cobalt-catalyzed hydrosilylation of amides.
引用
收藏
页码:3358 / 3362
页数:5
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