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Communication | Regular issue | Vol 55, No. 9, 2001, pp.1641-1651
Published online, 1st January, 1970
DOI: 10.3987/COM-01-9264
Synthesis of N-Functionalized Carbodiimides, Hydantoins, 1,3-Diazetidines, and Imidazolidine Derivatives from N-Vinylic Phosphazenes Derived from β-Amino Acids

Francisco Palacios,* Marta Legido, Itziar Pérez de Heredia, José María Ezpeleta, and Gloria Rubiales

* Departamento de Química Orgánica, Facultad de Farmacia, Universidad del País Vasco, Apartado 450, 01080 Vitoria-Gasteiz, Spain

Abstract

Synthesis of N-vinylic carbodiimides through Aza-Wittig reaction of N-vinylic phosphazenes with isocyanates is reported. These heterocumulenes are used for the preparation of unsymmetrical ureas and nitrogen heterocycles such as hydantoins, 1,3-diazetidines, imidazolidinones, and bis-imidazolidinone azines.