Synthesis of palladium(II) and platinum(II) complexes with crown ether phosphane ligands:: Stille coupling of aryl iodides in water

被引:16
作者
Fresneda, J [1 ]
de Jesús, E [1 ]
Gómez-Sal, P [1 ]
Mardomingo, CL [1 ]
机构
[1] Univ Alcala de Henares, Dept Quim Organ, Madrid 28871, Spain
关键词
aqueous-phase catalysis; crown compounds; C-C coupling; palladium; phosphane ligands;
D O I
10.1002/ejic.200400906
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The crown ether phosphanes (PArPh2)-Ph-* (1) and PAr(*)2R [Ar-* = 3,4-(18-crown-6)-phenyl; R = Me (2); R = Ph (3)], prepared from PCl2R and (ArLi)-Li-*, have been studied. The syntheses and characterization of their oxides (4-6), and their BH3 (7-9), PdCl2 (10-12), and PtCl2 (13-15) complexes are reported. The molecular structure of the borane complex (PAr2PhBH3)-Ph-*-B-. (9) has been determined by X-ray structural analysis. Spectroscopic data suggest that phosphanes 1-3 have similar electronic properties and steric requirements to the corresponding phenylphosphane ligands PPh2Me and PPh3. Crown ether methylphosphane 2 and its complexes are remarkably water soluble, but 1 and 3 are only slightly soluble. Palladium(II) complexes 14 and 15 have been tested as catalysts in the Stille coupling of phenyltrichlorostannanes and aryl iodides in water. ((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005).
引用
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页码:1468 / 1476
页数:9
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