New cationic rhodium-amine complexes and their implication in the catalytic anti-Markovnikov oxidative amination of styrenes

被引：43

作者：

Beller, M ^{[1
]}

Trauthwein, H ^{[1
]}

Eichberger, M ^{[1
]}

Breindl, C ^{[1
]}

Muller, TE ^{[1
]}

Zapf, A ^{[1
]}

机构：

[1] Tech Univ Munich, Inst Anorgan Chem, D-85747 Garching, Germany

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1998年 / 566卷 / 1-2期

关键词：

amines; amination of olefins; anti-Markovnikov reaction; catalysis; oxidation; rhodium complexes;

D O I：

10.1016/S0022-328X(98)00745-1

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The oxidative anti-Markovnikov amination of styrenes catalyzed by cationic rhodium complexes provides a new access to enamines. As catalyst precursors [Rh(cod)(amine)(2)](+) complexes have been identified and characterized for the first time by X-ray crystallography and NMR. While piperazine, N-methylpiperazine, and thiomorpholine form 1:1 Rh-amine complexes, nonchelating amines such as piperidine and diethylamine form 1:2 Rh-amine complexes. The easier dissociation of the amine ligand explains why monodentate amines give good yields of the corresponding enamines in contrast to bidentate amines. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：277 / 285

页数：9

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