Manganese(III) acetate oxidation of substituted diethyl benzylmalonates in the presence of alkynes affords tetrahydronaphthalene derivatives 3, 6, 7 and spiro[4,5]decatriene derivatives 4 or 5, through competitive 1,5 and 1,6 intramolecular aromatic substitution by vinyl radicals.
A. Citterio, R. Sebastiano, A. Maronati, R. Santi and F. Bergamini, J. Chem. Soc., Chem. Commun., 1994, 1517 DOI: 10.1039/C39940001517
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