Investigations in the imidazole field |
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| Authors: | R M Palei P M Kochergin |
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| Institution: | (1) Ordzhonikidze All-Union Chemical and Pharmaceutical Scientific-Research Institute, Moscow |
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| Abstract: | It has been established that various inorganic and organic bases can be used for the cyclization of 1,2-dialkyl-3-( -oxoalkylaralkyl])benzimidazolium halides into derivatives of pyrrolo1,2-a]benzimidazole. The action of strong bases on quaternary benzimidazolium salts gives O-betaines—intermediates in the closure of the pyrrole ring.For part XL, see 1]. |
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