Rhodium N-heterocyclic carbene complexes:: Synthesis, structure, NMR studies and catalytic activity

被引：33

作者：

Allen, DP

Crudden, CM ^{[1
]}

Calhoun, LA

Wang, RY

Decken, A

机构：

[1] Queens Univ, Dept Chem, Kingston, ON K7L 3N6, Canada

[2] Univ New Brunswick, Dept Chem, Fredericton, NB E3B 6E2, Canada

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2005年 / 690卷 / 24-25期

基金：

加拿大创新基金会; 加拿大自然科学与工程研究理事会;

关键词：

N-heterocyclic carbene; catalysis; hydrogenation; rhodium; phosphine exchange; saturation transfer;

D O I：

10.1016/j.jorganchem.2005.07.037

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The solid state structure, phosphine dissociation rates and catalytic activity of several Rh-N-heterocyclic carbene complexes were studied. Catalytic activity for the hydrogenation of P-methylstyrene was improved by up to two orders of magnitude upon the addition of copper chloride. The catalyst with the highest inherent activity was found to be [Rh(IMes)(P-p-FC6H4)(3)], although the p-methoxy derivative benefited the most from the addition of CuCl, giving turnover numbers of over 400 h(-1) (c) 2005 Published by Elsevier B.V.

引用

页码：5736 / 5746

页数：11

共 19 条

[1] Irreversible cleavage of a carbene-rhodium bond in Rh-N-heterocyclic carbene complexes:: implications for catalysis [J].