反应详情

6 g of methyl 5-ethylthio-1,3-thiazole-4-carboxylate were dissolved in 100 ml of methanol and heated with 1.2 g of NaOH in 10 ml of water under reflux for about 1 h. After the solvent had been removed in a rotary evaporator, the solids were removed by filtration, and the filtrate was acidified with 2N HCl solution. After drying, 4.7 g of the title compound, of melting point 158°-9° C., were obtained.

1. temperatureunder reflux for about 1 h
2. customAfter the solvent had been removed in a rotary evaporator
3. customthe solids were removed by filtration
4. customAfter drying