The orange obtained product from the reaction of phenylhydrazine with 3β,5α-dihydroxycholestan-6-one, described in the literature as the phenylhydrazone, is shown to be 6-phenylazocholest-5-en-3β-ol. The same product results from other 5α- and 5β-substituted cholestan-6-ones; the intermediate phenylhydrazones are isolable for the 5β-compounds.
J. Buckingham and R. D. Guthrie, J. Chem. Soc. C, 1967, 1700 DOI: 10.1039/J39670001700
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