Abstract
It is shown that; in agreement with the results of molecular orbital calculations, hydroxylation to form the corresponding imidazolones (III, IV and V) occurs by the action of anhydrous potassium hydroxide on benzo[1,2-d: 3,4-d′]diimidazole derivatives (I and II). However, these compounds do not undergo direct animation. 2-Amino-3,6-dimethyl- and 2-amino-3, 6,7-trimethylbenzo[1,2-d: 3,4-d′]diimidazoles are obtained by the cyclization of the appropriate diamine of the benzimidazole series (VIa, b) with cyanogen bromide.
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See [1] for communication I.
Translated from Khimiya Geterotsiklicheskikh Soedinenu, No. 8, pp. 1132–1135, August, 1971.
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Koshchienko, Y.V., Simonov, A.M. & Pozharskii, A.F. Benzo[1,2-d: 3, 4-d′] diimidazole derivatives. Chem Heterocycl Compd 7, 1064–1067 (1971). https://doi.org/10.1007/BF00477399
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DOI: https://doi.org/10.1007/BF00477399