反应详情

A mixture of 1.52 g of ethyl 2-(2-chlorobenzoyl)amino-1,3-thiazole-4-carboxylate, 0.68 g of potassium hydroxide, 1.8 mL of water and 9 mL of ethanol was stirred at room temperature for 4 hrs. After the reaction mixture was diluted with water, it was washed with ethyl acetate. The separated aqueous phase was acidified with an aqueous 2N-hydrochloric acid solution and the precipitated crude product was washed with water and dried to obtain 0.96 g of the aimed 2-(2-chlorobenzoyl)amino-1,3-thiazole-4-carboxylic acid.

1. washwas washed with ethyl acetate
2. customthe precipitated crude product
3. washwas washed with water
4. customdried