α-Diimines as nitrogen ligands for ruthenium-catalyzed allylation reactions and related (pentamethylcyclopentadienyl) ruthenium complexes

被引：41

作者：

Mbaye, MD ^{[1
]}

Demerseman, B ^{[1
]}

Renaud, JL ^{[1
]}

Bruneau, C ^{[1
]}

机构：

[1] Univ Rennes 1, Inst Chim Rennes, CNRS, UMR 6509, F-35042 Rennes, France

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2005年 / 690卷 / 08期

关键词：

allylation; regioselective; homochelate NN ligand; ligand effect; ruthenium;

D O I：

10.1016/j.jorganchem.2005.02.002

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The new Cp*Ru(II) (Cp*: pentamethylcyclopentadienyl) complexes Cp*(dab-R)RuCl, [Cp*(dab-R)(MeCN)Ru][PF6] (dab-R: RN=CH-CH=NR; R: iso-propyl, mesityl), and [Cp*(cod)(MeCN)Ru][PF6], are synthesized in high yields by reacting the corresponding alpha-diimine or 1,5-cyclooctadiene with [Cp*RuCl](4) and [Cp*(MeCN)(3)Ru][PF6], respectively. The alpha-diimine ligands are strongly bonded to the ruthenium centre as shown by the subsequent formation of the alkynyl derivatives Cp*(dab-R)RuC CR' (R' = tert-butyl or phenyl) and of the cationic derivatives [Cp*(dab-R)(L)Ru][PF6] (L = CO, PMe3). The neutral and cationic cc-diimine or 1,5-cyclooctadiene ruthenium complexes are compared as catalyst precursors for the ruthenium-catalyzed allylation of diethyl-sodiomalonate and diethylamine with cinnamyl acetate or ethyl cinnamyl carbonate. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：2149 / 2158

页数：10

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