Oxidation of 1-aminobenzimidazoles. Synthesis and properties of 1,1′-azobenzimidazoles |
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| Authors: | A F Pozharskii I M Nanavyan V V Kuz'menko A I Chernyshev Yu V Orlov N A Klyuev |
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| Institution: | (1) Rostov State University, 344006 Rostov-on-Don;(2) Research Institute for Physical and Organic Chemistry, Rostov State University, Rostov-on-Don |
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| Abstract: | 1-Amino-2-R-benzimidazoles are oxidized by lead tetraacetate to give, depending on the substituent in the 2-position, either to 1,1 -azobenzimidazoles (R=H, CH3, C6H5, Cl, N(CH3)2) or 3-R-benzo-1,2,4-triazines (R=NH2, NHCH3, NHC6H5, OH). The factors affecting the course of the reaction are discussed. The physicochemical properties of the 1,1-azobenzimidiazoles obtained have been examined.For preliminary communication, see 1].Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1486–1499, November, 1989. |
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