Phosphorus pentachloride → HCID 23372722, compound

Participants

Reaction Steps

A mixture of 5-(4-fluorophenyl)-4-[4-(methylsulfonyl)phenyl]thiophene-2-carboxylic acid (7.1 g) and phosphorus pentachloride (4.1 g) in toluene (100 ml) and tetrahydrofuran (25 ml) was stirred at ambient temperature for 1 hour. The mixture was concentrated to dryness to give pale yellow crystals of 5-(4-fluorophenyl)-4-[4-(methylsulfonyl)phenyl]thiophene-2-carbonyl chloride (8.1 g).

Provenance & Evidence