反应详情

To a stirred solution of 3-bromo aniline (6 g, 34.87 mmol) in dry DCM (200 ml) at 10° C. was added pyridine (4.13 mg, 52.31 mmol) followed by methane sulfonyl chloride (5.194 g, 45.34 mmol) and stirred at RT for 15 h. The reaction was monitored by TLC (35% Ethyl acetate in hexane). The reaction mixture was diluted with DCM (50 ml) and washed with 1N HCl (25 ml). The organic layer was dried over Na2SO4, and concentrated under reduced pressure to afford 8.45 g (96.3% yield) of N-(3-bromophenyl) methanesulfonamide. 1H NMR (DMSO-d6, 300 MHz): δ 10.01 (s, 1H), 7.368 (s, 1H), 7.365-7.19 (m, 3H), 3.03 (s, 1H). MS: m/z=251.8 (M+1).

1. washwashed with 1N HCl (25 ml)
2. dry with materialThe organic layer was dried over Na2SO4
3. concentrationconcentrated under reduced pressure