Axially chiral bidentate N-heterocyclic carbene ligands derived from BINAM: rhodium and iridium complexes in asymmetric ketone hydrosilylation

被引：125

作者：

Chianese, AR ^{[1
]}

Crabtree, RH ^{[1
]}

机构：

[1] Yale Univ, Dept Chem, New Haven, CT 06520 USA

来源：

ORGANOMETALLICS | 2005年 / 24卷 / 18期

关键词：

D O I：

10.1021/om050323+

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

New bis(N-heterocyclic carbene) and N-heterocyclic carbene-naphthoxy ligands are synthesized in two steps from (S)-1,1'-diamino-2,2'-binaphthyl. Rhodium and iridium complexes of the carbene-naphthoxy ligands were applied to the catalytic asymmetric hydrosilylation of acetophenone with diphenylsilane. Low enantioselectivities (12-13% ee) were observed for the rhodium-catalyzed reaction, but moderate enantioselectivities (50-60% ee) were seen for iridium.

引用

页码：4432 / 4436

页数：5

共 47 条

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