反应详情

Sodium hydride (5.0 g, 0.21 mol) in N,N-Dimethylformamide (370 mL) was treated portion wise with N-(5-Fluoro-pyridin-2-yl)-4-methyl-benzenesulfonamide (compound a, 50 g, 0.2 mol). After stirring for 20 minutes, iodoacetamide (30 g, 0.2 mol) was added in one portion. The reaction stirred overnight at room temperature. The solvent was removed to give a brown solid. The crude material was diluted with 500 ml of ethyl acetate and 100 mL of water and stirred for 2 hours. The solid was collected by filtration and dried to afford 36 g of 2-(5-fluoro-2-(tosylimino)pyridin-1(2H)-yl)acetamide. Rf 0.37, neat ethyl acetate MS m/z 324 (M+H).

1. stirringThe reaction stirred overnight at room temperature
2. customThe solvent was removed
3. customto give a brown solid
4. stirringstirred for 2 hours
5. filtrationThe solid was collected by filtration
6. customdried