反应详情

500 mg of ethyl 2-aminobenzothiazole-6-carboxylate (Maybridge Co., UK) was stirred in 20 ml of 4 M hydrochloric acid at 80° C. for 5 hours. The solvent was evaporated, and the residue was washed with a solvent mixture of ethyl acetate/hexane to obtain the title compound.

1. customThe solvent was evaporated
2. washthe residue was washed with a solvent mixture of ethyl acetate/hexane