反应详情

To a stirred mixture of 2-aminothiazole (2 g, 20 mmol), pyridine (10 mL), and anhydrous dichloromethane (20 mL) was added phenyl chloroformate (3 mL, 24 mmol) under argon at 0° C. The mixture was stirred at the same temperature for 5 min and at rt overnight before saturated aqueous sodium bicarbonate solution (30 mL) was added slowly. After mixed with heptanes (30 mL), the mixture was stirred for 30 min. The solid was filtered, washed with water (3×3 mL) and then diethylether (3×3 mL), and dried to give phenyl thiazol-2-ylcarbamate (3.4 g, 15 mmol, 75% yield) as an off-white solid.

1. additionwas added slowly
2. filtrationThe solid was filtered
3. washwashed with water (3×3 mL)
4. dry with materialdiethylether (3×3 mL), and dried