反应详情

In a 3-L flask equipped with a stirrer and thermometer, 100 g (613 mmol) of N-hydroxyphthalimide, 53.3 g (674 mmol) of pyridine and 1100 g of 1,4-dioxane were placed and were stirred at room temperature. To the resulting mixture 94.8 g (674 mmol) of benzoyl chloride was added dropwise over 1 hour, and the resulting mixture was stirred at room temperature for further 2 hours. Subsequently, 1100 g of pure water was added dropwise over 30 minutes to dissolve by-produced salts and thereby yielded a crystal of the target N-benzoyloxyphthalimide. The mixture was stirred and aged for further 1 hour, the crystal was filtrated using a Nutsche, was rinsed with an appropriate amount of water, was dried at 60° C. under a reduced pressure and thereby yielded 162 g (604 mmol) of N-benzoyloxyphthalimide in a yield of 98.6% on the basis of N-hydroxyphthalimide.

1. customIn a 3-L flask equipped with a stirrer
2. stirringthe resulting mixture was stirred at room temperature for further 2 hours
3. dissolutionto dissolve
4. customby-produced salts