PHOTOREARRANGEMENTS OF SOME METHYL-SUBSTITUTED CHOLEST-5-EN-3 beta -OL NITRITES.

Article abstract of DOI:10.1246/bcsj.56.3349

Photolysis of 6-methylcholest-5-en-3 beta -ol nitrite and 4,4,6-trimethylcholest-5-en-3 beta -ol nitrite in benzene with monochromatic light respectively gave a seven-membered cyclic hydroxamic acid arising from rearrangement albeit in low yields. Photolysis of 3 alpha -methylcholest-5-en-3 beta -ol nitrite and 3 alpha ,4,4-trimethylcholest-5-en-3 beta -ol nitrite respectively gave a nitroso dimer arising from beta -scission.