A Novel Feature in Phenyliodine Diacetate Oxidation
Phenyliodine diacetate (PIDA) oxidation of N-benzyl-N-benzyloxycarbonyltyrosine (4a) followed in one pot by quenching with aqueous sodium chloride or bromide solution gave the corresponding dihalodienone lactone (5a or 5b).With dihydrocinnamic acid simila