Reaction of polymethyl-substituted acryloylbenzenes (1) with fuming nitric acid in acetic anhydride gave the products (2) derived from selective side-chain nitration at the ortho-position; the subsequent intramolecular Michael reaction leads to exclusive formation of 4-nitrotetralones (3).
T. Keumi, T. Inagaki, N. Nakayama, T. Morita and H. Kitajima, J. Chem. Soc., Chem. Commun., 1987, 1091 DOI: 10.1039/C39870001091
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