Jc. Blazejewski et al., ANGULAR TRIFLUOROMETHYL GROUP .6. STUDIES IN THE SERIES OF 19,19,19-TRIFLUOROANDROSTENEDIONE DERIVATIVES, Journal of the Chemical Society. Perkin transactions. I, (13), 1997, pp. 1913-1921
Efforts devoted to the preparation of 19,19,19-trifluoroandrost-4-ene-
3,17-dione starting from 9,9,9-trifluoro-Wieland-Miescher ketone 1, as
well as an improved synthesis of this latter compound are described.