The present invention relates to a process for the preparation of 4-aminomethyl-3-alkoxyiminopyrrolidine methanesulfonate, a key intermediate of quinolone antibiotics. According to the process of the present invention, the total number of steps has been shortened to 2-3 steps, the solid separation is not required, and the use of costly chemicals, particularly (BOC)2O (t-butoxycarbonyl anhydride), several organic solvents and reactants, is eliminated.
本发明涉及一种制备喹诺
酮类抗生素关键中间体4-
氨基甲基-3-烷氧基
亚胺吡咯啉
甲磺酸盐的方法。根据本发明的方法,总步骤数量缩短至2-3步,无需固体分离,消除了使用昂贵
化学品,特别是(BOC)2O(叔丁氧羰基酸酐)、多种有机溶剂和反应物。