Tetrahedron letters

Ruthenium catalyzed selective synthesis of enol carbamates by fixation of carbon dioxide

T Mitsudo, Y Hori, Y Yamakawa, Y Watanabe

Index: Mitsudo, Take-aki; Hori, Yoji; Yamakawa, Yasushi; Watanabe, Yoshihisa Tetrahedron Letters, 1987 , vol. 28, # 38 p. 4417 - 4418

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Citation Number: 90

Abstract

Abstract Secondary amines react with carbon dioxide and terminal alkynes in the presence of a catalytic amount of 4-1, 5-cyclooctadiene)(6-1, 3, 5-cyclooctatriene) ruthenium [Ru (COD)(COT)] and tertiary phosphine in toluene to give enol carbamates in good yields with high regio-and stereoselectivity. Cyclic enol carbamates, 5-methylene-2-oxazolidinones are obtained from N-substituted propargylamines and carbon dioxide in high yields.