Chemistry Letters

RHODIUM CARBONYL-CATALYZED CARBONYLATION OF ACETYLENES IN THE PRESENCE OF OLEFINS AND PROTON DONORS. SYNTHESIS OF 5-ALKYL-2 ( …

P Hong, T Mise, H Yamazaki

Index: Hong, Pangbu; Mise, Takaya; Yamazaki, Hiroshi Chemistry Letters, 1981 , p. 989 - 992

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Citation Number: 31

Abstract

Rhodium carbonyl-catalyzed reactions of internal acetylenes with ethylene and CO in protic solvents, eg, ethanol, gave 3, 4-disubstituted-5-ethyl-2 (5H)-furanones in good yields. By using propylene or methyl acrylate instead of ethylene, small amounts of 5-n-/iso-propyl-2 (5H)-furanones or 5-[2-(methoxycarbonyl) ethyl]-2 (5H)-furanone were obtained.