反应详情

温度

50 °C

To a stirred solution of 4-bromo-N-(3-methoxyphenyl)benzenesulphonamide (0.5 g 1.46 mmol) and K2CO3 (0.5 g) in anhydrous DMF (7 ml) MeI (1 ml) was added and this was stirred at 50° C. for 0.5 h. The mixture was diluted to 50 ml with H2O and extracted in EtOAc (50 ml). The organic layer was washed with H2O, dried over MgSO4, filtered and the filtrate was passed through silica gel bead. The filtrate was evaporated to dryness to give the product (0.5 g; 96%), as a pale solid. 1H-NMR (CDCl3) 3.14 (5, 3H); 3.75 (s, 3H); 6.58 (broad d, 1H), 6.69 (t, 1H, J=2.20 Hz); 6.80 (dd, 1H, J=2.5, 8.34, Hz); 7.18 (tr, 1H, J=8.15 Hz); 7.40 (d, 2H, J=8.67 Hz); 7.58 (d, 2H, J=8.64 Hz).

1. extractionextracted in EtOAc (50 ml)
2. washThe organic layer was washed with H2O
3. dry with materialdried over MgSO4
4. filtrationfiltered
5. customThe filtrate was evaporated to dryness
6. customto give the product (0.5 g; 96%)