Metal complexes of chiral imidazolin-2-ylidene ligands

被引：137

作者：

Herrmann, WA

Goossen, LJ

Artus, GRJ

Kocher, C

机构：

来源：

ORGANOMETALLICS | 1997年 / 16卷 / 11期

关键词：

D O I：

10.1021/om960784i

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

N-Heterocyclic ''carbene'' Ligands derived from imidazole are promising alternatives and extensions for the well-established phosphine Ligands in organometallic catalysis. A general synthetic route to chiral 1,3-disubstituted imidazolin-2-ylidenes as well as the synthesis of several metal complexes of chiral imidazolin-2-ylidenes is reported. The retention of the chirality of the starting materials during the synthesis is proven by NMR data in combination with four X-ray structure determinations of chiral metal complexes. The N-heterocyclic carbenes are once again encountered as strong sigma-donor ligands that enhance pi-back-bonding in metal carbonyls.

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页码：2472 / 2477

页数：6

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