Recyclable tridentate stable palladium(II) PCP-type catalysts supported on silica for the selective synthesis of lactones

被引:42
作者
Chanthateyanonth, R [1 ]
Alper, H [1 ]
机构
[1] Univ Ottawa, Dept Chem, Ctr Catalysis Res & Innovat, Ottawa, ON K1N 6N5, Canada
关键词
carbonylation; dendrimers; heterogeneous catalysts; immobilization; lactones; palladium;
D O I
10.1002/adsc.200404109
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Five- or seven-membered ring lactones are synthesized, in good selectivity and high yields, by the cyclocarbonylation reaction of 2-allylphenols, using a tridentate diphosphinoaryl ligand (PCP-type) palladium(II) catalyst immobilized on silica (A) and silica supported dendrimers (B, C and D). These immobilized catalysts, which are highly active and can be recycled by simple filtration in air, and reused with only moderate loss of activity, combine the advantages of heterogeneous and homogeneous catalysts. These complexes are also stable towards oxygen and moisture.
引用
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页码:1375 / 1384
页数:10
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