[EN] NEW PROCESS FOR PREPARING 4-AMINOMETHYL-3-ALKOXYIMINOPYRROLIDINE METHANESULFONATE<br/>[FR] NOUVEAU PROCEDE DE PREPARATION DE 4-AMINOMETHYL-3-ALCOXYIMINOPYRROLIDINE METHANESULPHONATE
申请人:LG LIFE SCIENCES LTD
公开号:WO2004092129A1
公开(公告)日:2004-10-28
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。