Babler-Dauben Oxidation

The Babler oxidation also known as the Babler-Dauben oxidation. In this reaction, tertiary allylic alcohols oxidized to enones (high yield more than 75%) using pyridinium chlorochromate (PCC).

Mechanism of Babler-Dauben Oxidation

Mechanism takes place in the following steps-
Step-1: The cyclic tertiary allylic alcohol adds to PCC to form the corresponding chromate ester.
Step-2: 1,3-oxidative transposition converted into the 3-alkyl α,β-unsaturated ketone.