Heterocyclic Quinones in the Nenitzescu Reaction. Synthesis of Furo- and Pyrrolobenzothiazoles from 2-Methyl-4,7-dioxobenzothiazole |
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| Authors: | T I Mukhanova L M Alekseeva A S Shashkov V G Granik |
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| Institution: | (1) Federal Unitary Enterprise,  NIOPIK State Science Center, Moscow, 123995, Russia;(2) N. D. Zelinsky Organic Chemistry Institute, Russian Academy of Sciences, Moscow, 117913, Russia |
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| Abstract: | Treatment of the enamines of acetylacetone and benzoylacetone with 2-methyl-4,7-dioxobenzothiazole under Nenitzescu reaction conditions gave furo2,3-e]benzothiazoles (in acetic acid) and pyrrolo2,3-e]benzothiazoles (in nitromethane). Using enamines of acetoacetic ester gave exclusively pyrrolo2,3-e]benzothiazoles.__________Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 252–258, February, 2005. |
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| Keywords: | benzothiazole enamines pyrrolo[2 3-e]benzothiazole furo[2 3-e]benzothiazole Nenitzescu reaction |
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