Selective synthesis of sulfonylureas and carboxysulfamides a novel route to oxazolidinones.

JL Montero, G Dewynter, B Agoh, B Delaunay…

Index: Montero, Jean-Louis; Dewynter, Georges; Agoh, Bernadette; Delaunay, Barbara; Imbach, Jean-Louis Tetrahedron Letters, 1983 , vol. 24, # 30 p. 3091 - 3094

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Citation Number: 21

Abstract

Abstract Starting with chlorosulfonylisocyanate (CSI) two new series of 2-haloethyl carboxysulfamides 5 and 2-haloethyl oxosulfonylureas 6 have been prepared. The haloethyl carboxylate 5 underwent a novel cyclisation in the presence of Et 3 N to furnish quantitative yields of N-substituted oxazolidin-2-ones. This procedure constitutes a new route to these heterocycles.