Palladium carbene complexes derived from imidazolium-linked ortho-cyclophanes

被引：130

作者：

Baker, MV ^{[1
]}

Skelton, BW ^{[1
]}

White, AH ^{[1
]}

Williams, CC ^{[1
]}

机构：

[1] Univ Western Australia, Dept Chem, Nedlands, WA 6907, Australia

来源：

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 2001年 / 02期

关键词：

calixarenes; crown ethers; cryptands; cyclophanes; heterocycles; organometallic; structural studies; palladium;

D O I：

10.1039/b007293l

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of imidazolium-linked ortho-cyclophanes with nickel(II) and palladium(II) salts in the presence of acetate base led to the formation of complexes where a metal centre is bound by a pair of heterocyclic carbenes which themselves are part of a cyclophane skeleton. These cyclophane-metal complexes have been characterised by NMR spectroscopy and (for five complexes) X-ray diffraction studies. The complexes are highly active as promoters of Heck and Suzuki couplings, with preliminary studies showing Heck reactions with turnover numbers approaching 10(7).

引用

页码：111 / 120

页数：10

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