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Paper | Regular issue | Vol 36, No. 9, 1993, pp.1979-1988
Published online, 1st January, 1970
DOI: 10.3987/COM-92-6137
Synthesis of N-(2-Dialkylaminoethyl)-2-oxo-2H-1-benzo(thio)pyran-3-carboxamidines

Youssef El-Ahmad, Jean-Daniel Brion,* and Pierre Reynaud

*Laboratoire de Chimie Thérapeutique, UFR des Sciences Pharmaceutiques, 1, rue G. Veil, 44035 Nantes Cedex, France

Abstract

An improved method for the preparation of N-(2-dialkylaminoalkyl)substituted 2-oxo-2H-benzo(thio)pyran-3-carboxamidines from the corresponding methyl(thio)coumarin-3-carboximidothioates is described.