反应详情

The second step involves treating a stirred solution of ethyl 2-[(tert-butoxycarbonyl)amino]-1,3-thiazole-5-carboxylate in tetrahydrofuran-methanol with 6N aqueous sodium hydroxide solution at room temperature for 24 hours. Most of the tetrahydrofuran-methanol were removed by distillation under reduced pressure and the aqueous solution was acidified with 6N hydrochloric acid to obtain a solid which was filtered, washed with water and ether, then air dried, followed by drying in vacuo to obtain 2-[(tert-butoxycarbonyl)amino]-1,3-thiazole-5-carboxylic acid.

1. customMost of the tetrahydrofuran-methanol were removed by distillation under reduced pressure
2. customto obtain a solid which
3. filtrationwas filtered
4. washwashed with water and ether
5. customair dried
6. customby drying in vacuo