Catalytic Pauson–Khand reaction in ionic liquids

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• 作者：Mastrorilli ; Piero ; Nobile ; Cosimo Francesco ; Paolillo ; Rossella ; Suranna ; Gian Paolo
• 关键词：Pauson&ndash ; Khand reaction ; Cyclocarbonylation ; Ionic liquids ; Cobalt
• 刊名：Journal of Molecular Catalysis A ; Chemical
• 出版年：2004
• 期刊代码：57_13811169
• 类别：ch
• 出版时间：May 18, 2004
• 卷：214
• 期：1
• 页码：103-106
• 文件大小：72.6 K

摘要

Ionic liquids (ILs) are suitable media for the Co₂(CO)₈-catalysed intramolecular and intermolecular Pauson–Khand (PK) annelation, provided that the reaction is carried out under a CO pressure of 10bar. Two diethyl allyl propargyl malonates were quantitatively converted into the relevant cyclopentenones, whereas heteroatom tethered enynes gave lower yields in their cyclocarbonylation products. A moderate yield in the corresponding Pauson–Khand product was obtained reacting phenylacetylene with norbornene.