Tetrahedron Letters p. 4913 - 4916 (1992)
Update date:2022-07-30
Topics: Experimental Methylene Transformation Convenient access
Boivin, Jean
Chauvet, Christine
Zard, Samir Z.
16α-Bis(phenylsulphinyl) methyl pregnane derivative 7 gives, by a series of eliminations and rearrangements, the corresponding 16-methylene intermediate 4 on heating in the presence of triphenylphosphine.Regio- and stereoselective hydrogenation of the latter using Wilkinson's catalyst furnishes 16β-methyl corticosteroid 5.
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