Sulfuric Acid → 4-[3-(Trifluoromethyl)phenyl]-2,3-dihydro-1,3-thiazol-2-one

Participants

Reaction Steps

A mixture of 26.42 g (107.74 mmole) of 2-thiocyanato-1-(3-trifluoromethyl-phenyl)-ethanone, 11 mL of 50% aqueous sulfuric acid and 55 mL of acetic acid was heated at reflux for 1 hour. The mixture was cooled, poured into 500 mL of ice water mixture and stirred for 30 minutes. The solid was collected by filtration, washing with water to give 24 g of 4-(3-trifluoromethyl-phenyl)-3H-thiazol-2-one as a light orange-brown solid.

Provenance & Evidence