The pinacol–pinacolone rearrangement is a method for converting a 1,2-diol to a carbonyl compound in organic chemistry. The 1,2-rearrangement takes place under acidic conditions. The name of the rearrangement reaction comes from the rearrangement of pinacol to pinacolone.[1]
This reaction was first described by Wilhelm Rudolph Fittig (of Fittig reaction fame) in 1860.[2]