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Paper | Regular issue | Vol 31, No. 2, 1990, pp.267-276
Published online, 1st January, 1970
DOI: 10.3987/COM-89-5197
Reactions of 1,2-Diaminobenzimidazoles with β-Dielectrophiles: Synthesis of Pyrimido[1,2-a]benzimidazole Derivatives

Claudia Romano, Elena de la Guesta, and Carmen Avendaño*

*Departamento de Química OrgÁnica y Farmacéutica, Facultad de Farmacia, Universidad Complutense de Madrid, Ciudad Universitaria, 28040 Madrid, Spain

Abstract

1,2-Diaminobenzimidazoles react with malonic and β-ethoxymethylenemalonic acid derivatives to give pyrimido[1,2-a]benzimidazole derivatives.