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Paper | Regular issue | Vol 29, No. 2, 1989, pp.281-286
Published online, 1st January, 1970
DOI: 10.3987/COM-89-4664
Synthesis of Some β-(1-Benzimidazolyl)- and β-(1-Benzotriazolyl)-α-amino Acid Derivatives

Mojca Dobnikar, Marijan Kocevar, Slovenco Polanc, Miha Tisler, and Bojan Vercek*

*Department of Chemistry and Chemical Technology, E. Kardelj University, Murnikova 6, 61000 Ljubljana, Slovenia


A convenient method for the preparation of methyl β-(1-benzimidazolyl)- and β-(1-benzotriazolyl)-α-benzoylaminoacrylates (5) from N-substituted o-phenylenediamine 2a is described. The synthesis of these two compounds proceeds either by ring opening of oxazolones 3 or by cyclization of acrylates 4.