5-bromo-2-(4-methoxy-benzenesulfonylamino)-3-methyl-benzoic acid methyl ester 、
碘甲烷 以
乙醚 为溶剂,
以provided 22.06 g (86%) of the desired product as a white solid after trituration with ether的产率得到5-bromo-2-[(4-methoxy-benzenesulfonyl)-methyl-amino]-3-methyl-benzoic acid methyl ester