反应详情

To a solution of morpholine (12.04 g, 0.14 mol) and Et3N (13.97 g, 0.14 mol) in EtOAc was added 3,4-difluoronitrobenzene (20.0 g, 0.13 mol) dropwise in an ice bath. The reaction mixture was warmed to rt slowly, stirred at rt overnight, and then filtered. The filter cake was washed with water, dried in vacuo to obtain the 1st crop of product. The organic phase was separated from the filtrate, and the water phase was washed with EtOAc. The combined organic phases were dried over anhydrous Na2SO4 and concentrated in vacuo to obtain the 2nd crop of product. The solids of 1st crop and 2nd crop were combined to give the title compound as a yellow solid (28.0 g, 99%).

1. filtrationfiltered
2. washThe filter cake was washed with water
3. customdried in vacuo
4. customto obtain the 1st crop of product
5. customThe organic phase was separated from the filtrate
6. washthe water phase was washed with EtOAc
7. dry with materialThe combined organic phases were dried over anhydrous Na2SO4
8. concentrationconcentrated in vacuo
9. customto obtain the 2nd crop of product