A number of A-ring steroidal 1,4-dien-3-ones 7, 8, 9 and 10 have been aromatised in zinc/pyridine–water; the products depend upon the position and type of C-ring substituents and provide new evidence in support of a radical anion mechanism.
J. J. Harburn, G. C. Loftus and B. A. Marples, J. Chem. Res. (S), 1998, 424 DOI: 10.1039/A802562B
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