Naphthalene → 2-Methyl-1-(1-naphthalenyl)-1-propanone

Participants

Reaction Conditions

Reaction Steps

Aluminium chloride (28.0 g, 0.21 mole) was suspended in 200 ml of anhydrous dichloromethane and was cooled to −30° C. A solution of naphthalene (25.6 g, 0.2 mole) and isobutyryl chloride (21.3 g, 0.20 mole) in 50 ml of anhydrous dichloromethane was slowly added to this suspension. After the addition was completed, the reaction mixture was stirred at −30° C. for 1 h. The reaction mixture was then allowed to warm up to room temperature. The reaction mixture was poured onto 300 g of ice water, and the organic layer was separated. The organic layer was successively washed twice with a 5 wt % aqueous hydrochloric acid solution (150 ml) and once with a 2 wt % aqueous sodium bicarbonate solution (150 ml). After drying over anhydrous magnesium sulfate the solution was concentrated under reduced pressure. The yield of 2-methyl-1-(1-naphthalenyl)-1-propanone was 39.7 g or 98%.

Provenance & Evidence