反应详情

A mixture of Example 126B (760 mg, 2.1 mmol), 3-fluorobenzenesulfonyl chloride (600 mg, 3.1 mmol) in dichloromethane (10 mL) was treated with pyridine (0.690 mL, 8.5 mmol), stirred for 18 hours, diluted with dichloromethane (90 mL), washed with 0.5M HCl (2×100 mL) and brine, dried (Na2SO4), filtered, concentrated and purified on a Biotage silica gel cartridge (40 g) with 50-75% dichloromethane in hexanes to provide the desired product. MS (ESI(+)) m/e 478, 480 (M+H)+, 495, 497 (M+NH4)+, 500, 502 (M+Na)+; (ESI(−)) m/e 476, 478 (M−H)−; 1H NMR (300 MHz, DMSO-d6) δ 10.23 (s, 1H), 7.64-7.35 (m, 10H), 6.83 (d, 1H), 5.25 (s, 2H), 2.19 (s, 3H).

1. washwashed with 0.5M HCl (2×100 mL) and brine
2. dry with materialdried (Na2SO4)
3. filtrationfiltered
4. concentrationconcentrated
5. custompurified on a Biotage silica gel cartridge (40 g) with 50-75% dichloromethane in hexanes