Mn(OAc)3-mediated alkoxycarbonylation of indoles, pyrimidinones, and pyridinones with alkyl carbazates is reported. The reactions proceed through a radical process to afford regioselectively 3-carboxylated indoles, 5-carboxylated pyrimidinones, and 3-carboxylated pyridinones in moderate to good yields under mild reaction conditions.
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