Microwave induced selective enolization of steroidal ketones and efficient acetylation of sterols in semisolid state
作者:Padma Marwah、Ashok Marwah、Henry A. Lardy
DOI:10.1016/s0040-4020(03)00207-2
日期:2003.3
Under microwave irradiation steroidal enones, more specifically, position three carbonyls were efficiently and selectively converted to the corresponding enol acetates in the presence of additional enolizable carbonyl functions at other positions, using aceticanhydride and a catalytic amount of toluene-p-sulfonic acid. Acetylation of hydroxyl groups of the sterols, including those at the hindered