Iodosobenzene or iodobenzene diacetate and excess base when reacted with 17β-hydroxy-5α-androstane-3-one (1a) unexpectedly gave a good yield of Favorski acid (3a) and some (3b). 17β-hydroxy-5α-19-norandrostan-3-one (1b) gave mainly the expected dimethylketal of the 2α-hydroxy-3-ketosteroid (5).
Daum, Sol J.
p. 4725 - 4728
(2007/10/02)
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