1-(4-Bromo-2-thienyl)-1-propanol → 4-Bromo-2-propionylthiophene

Participants

Reaction Steps

33.5 g (151 mmol) of 1-(4-bromo-2-thienyl)-1-propanol are dissolved in 400 mL of dichloromethane. 130 g (1.5 mol) of manganese dioxide are then added portionwise and the medium is stirred at room temperature for 24 hours. After filtration through Celite and then concentration and chromatography on silica gel (eluent: 9 heptane/1 ethyl acetate), the desired product is obtained in the form of white crystals (m=26.6 g; Y=80%).

Provenance & Evidence