Oxidation of non-enolizable α, β-unsaturated carbonyl compounds and enolizable β- monosubstituted α, β-unsaturated carbonyl compounds with phenyl iodine (III) diacetate (PIDA) in methanolic potassium hydroxide gave α-hydroxydimethylacetal β-methoxy products, and oxidation of enolizable β, β-disubstituted α, β-unsaturated carbonyl compounds under the same conditions gaveα'-hydroxy products.
![5,6-二氢[1,1'-联苯]-3(4H)-酮结构式](https://image.chemsrc.com/caspic/412/10345-87-6.png)
