A 2H n.m.r. study of the steroidal dienone–phenol rearrangement
Abstract
The extent of deuteriation is reported for the products of the dienone–phenol rearrangement of androsta-1,4-dien-3-ones using as catalysts (i) deuteriated acetic anhydride, acetic acid, and zinc chloride; (ii) deuterium bromide; and (iii) methan [2H]ol, ethyl orthoformate, and [2H2]sulphuric acid. The stereochemistry of the acid-catalysed enolization of 1 -dehydrotestosterone is also reported.