6-[2-(4-benzo[D]isothiazol-3-yl-piperazin-1-yl)-ethyl]-7-fluoro-4,4,8-trimethyl-3.4-dihydro-1H-quinolin-2-one 、
甲烷磺酸 在
titled compound 作用下,
以
四氢呋喃 为溶剂,
反应 3.0h,
以to give 1.1945 g (2.177 mmol, 98%) of the titled compound a fine, white solid的产率得到6-[2-(4-benzo[D]isothiazol-3-yl-piperazin-1-yl)-ethyl]-7-fluoro-4,4,8-trimethyl-3.4-dihydro-1H-quinolin-2-one methanesulfonate