反应详情

To 753 mmol fuming nitric acid at 0° C. was added dropwise 150 ml 20% oleum. 150.6 mmol 5-fluoro-isoindole-1,3-dione was then added portionwise and the resulting suspension was allowed to warm to room temperature over 4 hours and then stirred for a further 16 h at room temperature and finally was heated at 50° C. for 3 h. The reaction mixture was poured onto ice and the resulting mixture was filtered and the filter cake dried in vacuo to afford the title compound as a yellow solid (68% yield). MS (m/e): 209.1 ([M−H]−, 100%).

1. temperaturefinally was heated at 50° C. for 3 h
2. additionThe reaction mixture was poured onto ice
3. filtrationthe resulting mixture was filtered
4. customthe filter cake dried in vacuo