Hydrochloric Acid → 7-Fluoro-1,3-benzothiazol-2-amine

Participants

Reaction Steps

A mixture of 1-fluoro-3-nitro-2-thiocyanatobenzene 2 (3.96 g, 0.02 mol), ethanol (30 mL), water (25 mL) and conc. hydrochloric acid (25 mL) was refluxed gently during the addition of hydrogen-reduced iron powder (8 g). After refluxing for 16 hr, the liquor was filtered hot, cooled, the residue filtered, dissolved in hot water, and neutralized with ammonia and then extracted with EtOAc to get the compound 7-fluorobenzo[d]thiazol-2-amine (1 g) as a colorless oil. LC-MS: m/z 169.2 (M+H)+

Provenance & Evidence