Bull. Russ. Acad. Sci. Div. Chem. Sci. (Engl. Transl.) p. 588 - 589 (1992)
Update date:2022-08-05
Topics:
Baikalova, L. V.
Domnina, E. S.
Afonin, A. V.
The reaction of 2-aminobenzimidazole (1) with acetylene under pressure proceeds with the formation of vinyl monomers, corresponding to amine and imine forms, 1-vinyl-2-amino- and 1,3-divinyl-2-iminobenzimidazoles, depending on the reaction conditions. 1,3-Divinyl-2-benzimidazolone was also isolated in aqueous dioxane in addition to the monovinyl derivative of 1.Cyclization of the divinyl derivative of 1 with acetylene preceeds to give 9-vinyl-1,2-dimethylimidazo<1,2-a>benzimidazole. Keywords: 2-aminobenzimidazole, acetylene, vinyl monomers.
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