USE OF PALLADIUM-CATALYZED COUPLING REACTIONS IN THE SYNTHESIS OF HETEROBIMETALLIC COMPLEXES - PREPARATION OF BIS(CYCLOPENTADIENYL)ACETYLENE HETERODINUCLEAR COMPLEXES

被引：64

作者：

LOSTERZO, C ^{[1
]}

STILLE, JK ^{[1
]}

机构：

[1] COLORADO STATE UNIV,DEPT CHEM,FT COLLINS,CO 80523

来源：

ORGANOMETALLICS | 1990年 / 9卷 / 03期

关键词：

Heterobimetallic Complexes - Palladium-Catalyzed Coupling Reactions;

D O I：

10.1021/om00117a025

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The palladium-catalyzed coupling reactions of η5-iodocyclopentadienyl complexes of Fe, W, Mn, and Re with Bu3SnC≡CH yield the corresponding η5-ethynylcyclopentadienyl derivatives (η5-HC=CC5H4)MLn (M = Fe, W, Mn, Re). Upon reaction with Et2NSnR3 (R = Me, Bu), the acetylenic proton is replaced with a trialkyltin group, forming the η5-[(trialkylstannyl)ethynyl] cyclopentadienyl derivatives (η5-R3SnC≡CC5H4)MLn. A second palladium-catalyzed coupling reaction between these trialkyltin derivatives and (η5-ioclocyclopentadienyl)metal complexes affords the heterobimetallic complexes LnM(η5-C5H4)C≡C-(η5-C5H4)M’Lm (M and M’ = Fe, W, Mo, Mn, Re). The crystal structure of Ph3P(CO)2Mn(η5-C5H4)C≡C(η5-C5H4)W(CO)3CH3 confirmed the general structure of these heterobimetallic complexes and showed that the two metals attached to the cyclopentadienyl rings were pointed in opposite directions. © 1990, American Chemical Society. All rights reserved.

引用

页码：687 / 694

页数：8

共 51 条

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