反应详情

4-Methoxybenzenesulfonyl chloride (341 mg, 1.7 mmol) was added to a solution of 1-(-2′,4′-difluoro-biphenyl-2-yl)ethylamine (350 mg, 1.5 mmol) and triethylamine (418 μL, 3 mmol) in acetonitrile. The reaction progress was monitored by LCMS and after 2 hours the reaction appeared to be complete. Water was added and the resulting solid was collected by filtration. The solid was dissolved in dichloromethane and purified by preparative liquid chromatography on a Biotage® 40 Mi column of prepacked silica gel (90 g), eluting with a gradient of 30%-50% methyl tert-butyl ether in hexane (35 min), to afford the title compound (473 mg, 78%) as a white solid, m.p. 154-155° C.;

1. filtrationthe resulting solid was collected by filtration
2. dissolutionThe solid was dissolved in dichloromethane
3. custompurified by preparative liquid chromatography on a Biotage® 40 Mi column of prepacked silica gel (90 g)
4. washeluting with a gradient of 30%-50% methyl tert-butyl ether in hexane (35 min)