An Unusual Selectivity Change in the Acetylation of 1,8-Dihydroxy-3,7-dimethyl-9- (2’,6’ 6’-trimethylcyclohexen-1’-yl)nona-2,4,6-triene under Phase-transfer Catalysis
Аннотация:
During acetylation of an intermediate in vitamin A synthesis under phase-transfer catalysis in the solid-liquid system, only monosubstitution occurs in contrast to acetylation in the homogeneous system.