Bromine → 4-Fluoro-1,3-benzothiazol-2-amine

Participants

Reaction Steps

To a suspension of (2-fluorophenyl)thiourea (1.7 g, 10.0 mmol) in chloroform (25ml) was added a solution of bromine (0.51 mL; 10.0 mmol) dropwise at room temperature. The resulting mixture was heated under reflux for 3 hrs. The solvent was evaporated, water was added and the mixture was neutralized with ammonium hydroxide. The resulting white precipitation was collected by filtration and dried to yield 1.2 g (72%) of the title compound which was used in the subsequent step without further purification.

Provenance & Evidence