(4-bromo-4'-bromomethylbiphenyl-3-yl)difluoromethanesulfonamide 、
thioacetic acid S-{3-bromo-4-[(2,2-dimethylpropoxysulfonyl)difluoromethyl]benzyl} ester 在
sodium hydroxide 作用下,
以
乙醇 、
氯仿 为溶剂,
反应 0.5h,
以83%的产率得到{2-bromo-4-[4'-bromo-3'-(sulfamoyldifluoromethyl)biphenyl-4-ylmethylsulfanylmethyl]phenyl}difluoromethanesulfonic acid 2,2-dimethylpropyl ester