Olefin cyclopropanation catalysed by novel ruthenium-arene complexes containing phosphines with pendent arenes

被引：54

作者：

Simal, F ^{[1
]}

Jan, D ^{[1
]}

Demonceau, A ^{[1
]}

Noels, AF ^{[1
]}

机构：

[1] Univ Liege, Macromol Chem & Organ Catalysis Lab, CERM, B-4000 Liege, Belgium

来源：

TETRAHEDRON LETTERS | 1999年 / 40卷 / 09期

关键词：

cyclopropanation; olefins; diazo compounds; ruthenium and compounds;

D O I：

10.1016/S0040-4039(99)00057-X

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Ruthenium-arene complexes containing phosphines with pendent aryl groups [RuCl2(eta(6)-p-cymene)(PCy2(CH2)(3)Ar)]. Ar = C6H5 and 3,5-(CH3)(2)-C6H3 (1 and 3), and the resulting chelating complexes [RuCl2(PCy2(CH2)(3)-eta(6)-Ar)] (2 and 4) mediate the cyclopropanation of olefins with ethyl diazoacetate. Comparison of the reactivity patterns of these complexes indicates that p-cymene disengagement is likely the key step in the reactions catalysed by non-chelating complexes 1 and 3. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：1653 / 1656

页数：4

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