Planar chiral imidazolium salts in the asymmetric rhodium-catalyzed 1,2-addition of arylboronic acids to aldehydes

被引：110

作者：

Focken, T ^{[1
]}

Rudolph, J ^{[1
]}

Bolm, C ^{[1
]}

机构：

[1] Rhein Westfal TH Aachen, Inst Organ Chem, D-52056 Aachen, Germany

来源：

SYNTHESIS-STUTTGART | 2005年 / 03期

关键词：

2.2]paracyclophane; N-heterocyclic carbene; imidazolium salt; asymmetric catalysis; boronic acid; diarylmethanol;

D O I：

10.1055/s-2005-861800

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Planar chiral imidazolium salts 8 and 13 were used as precursors for N-heterocyclic carbene ligands, which were applied in rhodium-catalyzed additions of arylboronic acids to aromatic aldehydes. With pseudo-ortho-disubstituted [2.2]paracyclophane (S,R-p)-8b bearing a phosphinoyl substituent at the paracyclophane backbone, 38% ee has been achieved in this rather unexplored reaction.

引用

页码：429 / 436

页数：8

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