Tetrahedron Letters

Ligand effects in the rhodium-catalyzed addition of alkynes to aldehydes and diketones. Modification of the β-diketonate ligand

PK Dhondi, P Carberry, JD Chisholm

Index: Dhondi, Pawan K.; Carberry, Patrick; Chisholm, John D. Tetrahedron Letters, 2007 , vol. 48, # 49 p. 8743 - 8746

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Citation Number: 7

Abstract

A catalytic amount of dicarbonylacetonato rhodium (I) and a phosphine ligand bearing bulky electron-donating alkyl groups has been shown to generate an effective catalyst for the addition of alkynes to aldehydes and activated ketones under mild, neutral conditions. While previous studies have shown that modification of the phosphine has significant effects on the activity of the catalyst, the role of the β-diketonate ligand has not been probed. Six different ...

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