Sequential Ring Expansion and Ketene Elimination Reactions in the Novel Rhodium (I)-Catalyzed Carbonylation of Thiazolidines

K Khumtaveeporn, H Alper

Index: Khumtaveeporn, Kanjai; Alper, Howard Journal of the American Chemical Society, 1994 , vol. 116, # 13 p. 5662 - 5666

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Citation Number: 31

Abstract

Abstract: 1, 3-Thiazolidines react with carbon monoxide, in the presence of catalytic quantities of chloro (1, s-cyclooctadiene) rhodium (I) dimer and potassium iodide, to give thiazolidinones in 56-8896 yields. Reaction in the absence of KI afforded the six-membered ring thiazin-3-one. The rhodium (1) complex can catalyze the quantitative conversion of the thiazin-3-one to the thiazolidinone under carbon monoxide, with ketene as the reaction by ...