Steroids and Walden inversion. Part LXI. Chlorination of 5α-cholestan-2-one
作者:C. W. Shoppee、S. C. Sharma
DOI:10.1039/j39670002385
日期:——
Monochlorination of 5α-cholestan-2-one yields 78% of the axial 3α-chloro-ketone, 19% of the equatorial 3β-chloro-ketone, and a little of the 3,3-dichloro-ketone under conditions in which the 3α-chloro-ketone is stable. Chlorination of the enol acetate of 5α-cholestan-2-one affords 3α-chlorocholestan-2-one, with traces of the 3β-chloro-ketone. 1α-Chloro-, 1α,3α-dichloro-, 1α,3β-dichloro-, 3,3-dichloro-