Chemistry of Heterocyclic Compounds p. 891 - 893 (1990)
Update date:2022-08-05
Topics:
Povstyanoi, M. V.
Kruglenko, V. P.
Fedosenko, E. N.
Klyuev, N. A.
By reaction of 2-chlorobenzimidazole with methyl-, ethyl-, and 2-hydroxyethylhydrazine we have synthesized the corresponding 2-(1'-alkylhydrazino)benzimidazoles for the first time.By refluxing the latter in alcohols with acetyl(benzoyl)acetone they form 1-(2-benzimidazolyl)-1-alkyl hydrazones and, without solvent, form 1,3,5-trisubstituted 1,2,4-triazepino<4,3-a>benzimidazoles.
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