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

共 27 条

[11] HOMOLEPTIC CARBENE COMPLEXES .6. BIS(1,2'-METHYLENE-3,3'-DIALKYL-DIIMIDAZOLIN-2,2'-DIYLIDENE)PALLADIUM CHELATE COMPLEXES BY THE FREE CARBENE ROUTE [J].

FEHLHAMMER, WP ;

BLISS, T ;

KERNBACH, U ;

BRUDGAM, I .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1995, 490 (1-2) :149-153

[12] N-heterocyclic carbenes.: 19 -: Dicationic chelating N-heterocyclic carbene complexes of palladium:: new catalysts for the copolymerisation of C2H4 and CO [J].

Gardiner, MG ;

Herrmann, WA ;

Reisinger, CP ;

Schwarz, J ;

Spiegler, M .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1999, 572 (02) :239-247

[13] A route to new methylpalladium(II) carbene complexes [J].

Green, MJ ;

Cavell, KJ ;

Skelton, BW ;

White, AH .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1998, 554 (02) :175-179

[14] Palladium complexes with bridged and unbridged benzimidazolin-2-ylidene ligands [J].

Hahn, FE ;

Foth, M .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1999, 585 (02) :241-245

[15]

HALL SR, 1995, XTAL 3 4 USERS MANUA

[16] METAL-COMPLEXES OF N-HETEROCYCLIC CARBENES - A NEW STRUCTURAL PRINCIPLE FOR CATALYSTS IN HOMOGENEOUS CATALYSIS [J].

HERRMANN, WA ;

ELISON, M ;

FISCHER, J ;

KOCHER, C ;

ARTUS, GRJ .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1995, 34 (21) :2371-2374

[17] N-heterocyclic carbenes [J].

Herrmann, WA ;

Kocher, C .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 1997, 36 (20) :2162-2187

[18] N-heterocyclic carbenes. 23. High yield syntheses of sterically demanding bis(N-heterocyclic carbene) complexes of palladium [J].

Herrmann, WA ;

Schwarz, J ;

Gardiner, MG .

ORGANOMETALLICS, 1999, 18 (20) :4082-4089

[19] N-heterocyclic carbenes.: 20.: Homoleptic chelating N-heterocyclic carbene complexes of palladium and nickel [J].

Herrmann, WA ;

Schwarz, J ;

Gardiner, MG ;

Spiegler, M .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1999, 575 (01) :80-86

[20] Chiral oxazoline/imidazoline-2-ylidene complexes [J].

Herrmann, WA ;

Goossen, LJ ;

Spiegler, M .

ORGANOMETALLICS, 1998, 17 (11) :2162-2168

← 1 2 3 →