Improved sonogashira C-C coupling through clay supported palladium complexes with tridentate pincer bis-carbene ligands

被引:60
作者
Mas-Marzá, E [1 ]
Segarra, AM [1 ]
Claver, C [1 ]
Peris, E [1 ]
Fernandez, E [1 ]
机构
[1] Univ Rovira & Virgili, Dept Quim Fis & Inorgan, E-43005 Tarragona, Spain
关键词
Sonogashira coupling; aryl halides; acetylenes; palladium; tridenatate pincer bis-carabene ligands; clays; immobilization;
D O I
10.1016/S0040-4039(03)01686-1
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Highly active recyclable Pd catalysts modified with a rigid C,N,C-tridentate pincer carbene ligand were successfully applied to the coupling of aryl halides with terminal acetylenes. The immobilization of Pd(11) complexes onto clays has beneficial effects on the recyclability of the catalytic activity over consecutive runs and also on the catalyst's stability, preventing it from Pd(0) formation. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码:6595 / 6599
页数:5
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