Thiophene → HCID 12525776, compound

Participants

Reaction Steps

To a cooled solution of 58 mL of o-chlorobenzoyl chloride and 24 ml of thiophene in 700 mL of carbon disulfide, cooled to 0° C. under a nitrogen atmosphere, was added 134 g of aluminum trichloride portionwise over a 20-minute period. A delayed exotherm was noted and the resulting deep red mixture was stirred for one hour at room temperature. Reaction mixture was poured into 4.0 kg of ice-water, extracted with methylene chloride and the organic layer washed three times with 1N NaOH followed by a final water wash. The organic layer was dried (MgSO4), filtered and concentrated to a dark oil. Distillation under vacuum provided 55 g of the subject compound as a light green viscous liquid, B.P. 160° C. at 1.6 mm.

Provenance & Evidence