Selective liquid-phase semihydrogenation of functionalized acetylenes and propargylic alcohols with silica-supported bimetallic palladium-copper catalysts

被引：84

作者：

Spee, MPR

Boersma, J

Meijer, MD

Slagt, MQ

van Koten, G

Geus, JW

机构：

[1] Univ Utrecht, Dept Met Mediated Synth, Debye Inst, NL-3584 CH Utrecht, Netherlands

[2] Univ Utrecht, Dept Inorgan Chem, Debye Inst, NL-3584 CA Utrecht, Netherlands

来源：

JOURNAL OF ORGANIC CHEMISTRY | 2001年 / 66卷 / 05期

关键词：

D O I：

10.1021/jo001246p

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Silica-supported, bimetallic palladium-copper catalysts were prepared in solution under mild conditions by reacting lithium di(4-tolyl)cuprate with palladium acetate in the presence of silica particles. Small bimetallic palladium-copper particles were deposited on the silica surface as confirmed with TEM-EDAX and EXAFS. The new material has been applied as catalyst in the liquid-phase semihydrogenation of mono- and disubstituted alkynes and showed high selectivity toward the cis-alkenes. The influence of addition of quinoline or potassium hydroxide to the semihydrogenation reaction mixture and the effects of exposure of the catalyst to air before use have been investigated.

引用

页码：1647 / 1656

页数：10

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