Synthesis of Ru(II) complexes of the new 1-[(P-diphenyl)-2-phosphinoethyl]-3,5-dimethylpyrazole ligand and study of their reactivity toward terminal alkynes

被引：31

作者：

Esquius, G

Pons, J

Yáñez, R

Ros, J ^{[1
]}

Mathieu, R

Lugan, N

Donnadieu, B

机构：

[1] Univ Autonoma Barcelona, Dept Quim, Bellaterra 08193, Barcelona, Spain

[2] CNRS, Chim Coordinat Lab, F-31077 Toulouse 4, France

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2003年 / 667卷 / 1-2期

关键词：

ruthenium; P-N ligands; hemilabile ligands; vinylidenes; allenylidenes;

D O I：

10.1016/S0022-328X(02)02156-3

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reaction between [RuCl2(PPh3)(3)] and one or two equivalent amounts of 1-[(P-diphenyl)-2-phosphinoethyl]-3,5-dimethylpyrazole (1) in dichloromethane gave [RuCl2(PPh3)(1)] (2) or [RuCl2(1)(2)] (3), respectively, in good yields. Activation of propargylic alcohol derivatives by 3 in refluxing dichloromethane and in the presence of NaBPh4 lead to the new allenylidene ruthenium complexes [RuCl(1)(2)(C=C=CPhCH3)][BPh4] ([4][BPh4]) and [RuCl(1)(2)(C=C=CPh2)][BPh4] ([5][BPh4]). The reaction between 3 and phenylacetylene in dichloromethane and in the presence of KPF6 affords the vinylidene complex [RuCl(1)(2)(C-CHPh)][PF6] ([6][PF6]). The X-ray diffraction studies of 2, 3, and [5][BPh4] are reported. (C) 2002 Elsevier Science B.V. All rights reserved.

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页码：126 / 134

页数：9

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