STUDY OF UNSATURATED AZOLES. 16. SYNTHESIS AND REACTIONS OF 2-STYRYLBENZIMIDAZOLES

Abstract

Fusion of 1-methyl-2-styrylbenzimidazole with KOH leads to separation of the phenylvinyl or the N-methyl group to give 1-methylbenzimidazol-2-one or 2-styrylbenzimidazole in the ratio 1∶1. Decomposition of the perbromides of benzimidazoles by heating in water gives 5(6)-bromobenzimidazoles and, in the presence of KI, to 5(6)-iodobenzimidazoles. Methods are presented for the synthesis of 5(6)-bromo- and 5(6)-iodo-2-styryl- and also 2-α-bromo- and 2-α-iodostyrylbenzimidazoles.

How to Cite
Popov, I. I. Chem. Heterocycl. Compd. 1997, 33, 949. [Khim. Geterotsikl. Soedin. 1997, 1088.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF02253167