An Efficient C−H Oxidation Protocol for α-Hydroxylation of Cyclic Steroidal Ethers
摘要:
Various C-16 hydroxy steroids have been prepared with the aid of CrO3/Bu4NIO4. Out of the two possible reaction courses, transition state B is favored because of less steric interference between substrate and CrO4. Thus, C-H bonds at C-16 are oxidized selectively.