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.
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页码：1647 / 1656
页数：10
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