The dimerisation of monosubstituted α-hydroxyacetylenes by use of tris (triphenylphosphine) chlororhodium (I) as catalyst

H Singer, G Wilkinson

Index: Singer,H.; Wilkinson,G. Journal of the Chemical Society [Section] A: Inorganic, Physical, Theoretical, 1968 , p. 849 - 853

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Citation Number: 40

Abstract

It has been shown that catalytic amounts of tris (triphenylphosphine) chlororhodium (I), RhCl (PPh3) 3, in benzene, dichloromethane, or chloroform solution will convert monosubstituted α-hydroxyacetylenes predominantly into the dimers. In this way 3-methylbut-1-yn-3-ol yields 2, 7-dimethyloct-3-en-5-yne-2, 7-diol; by analogy dimers were obtained from 3-methylpent-1- yn-3-ol, but-1-yn-3-ol, and 1-ethynylcyclohexan-1-ol. Although phenylacetylene gives ...