Direct oxidation of 4-methylpyrrole-2-carboxylates with DDQ in the presence of a glycol

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Abstract

Oxidation of 4-methylpyrrole-2-carboxylates with DDQ in the presence of a glycol proceeded smoothly on the methyl group at the C4 position regioselectively to afford the corresponding pyrrole-2,4-dicarboxylates directly. Direct oxidation of a methyl group of 2,4,6-trimethylphenol and 3-methyl-9H-carbazole into carboxylates was also demonstrated. © 2012 The Japan Institute of Heterocyclic Chemistry.

Journal

  • Heterocycles

    Heterocycles 86 (2), 1031-1038, 2012-01-01

    Japan Institute of Heterocyclic Chemistry / Elsevier

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