Ethyl 1-(3-tert-butoxycarbonylamino-4,6-difluorophenyl)-6,7-difluoro-5,8-dimethyl-4-oxo-1,4-dihydroquinoline-3-carboxylate → 1-(3-amino-4,6-difluorophenyl)-6,7-difluoro-5,8-dimethyl-4-oxo-1,4-dihydroquinoline-3-carboxylic Acid
반응식
C(OC([NH:8][C:9]1[CH:10]=[C:11]([N:17]2[C:26]3[C:21](=[C:22]([CH3:30])[C:23]([F:29])=[C:24]([F:28])[C:25]=3[CH3:27])[C:20](=[O:31])[C:19]([C:32]([O:34]CC)=[O:33])=[CH:18]2)[C:12]([F:16])=[CH:13][C:14]=1[F:15])=O)(C)(C)C>Cl>[NH2:8][C:9]1[CH:10]=[C:11]([N:17]2[C:26]3[C:21](=[C:22]([CH3:30])[C:23]([F:29])=[C:24]([F:28])[C:25]=3[CH3:27])[C:20](=[O:31])[C:19]([C:32]([OH:34])=[O:33])=[CH:18]2)[C:12]([F:16])=[CH:13][C:14]=1[F:15]참가 물질
3
반응물 1
생성물 1
시약·촉매·용매 1
실험 절차
To 1.8 g of the ethyl 1-(3-tert-butoxycarbonylamino-4,6-difluorophenyl)-6,7-difluoro-5,8-dimethyl-4-oxo-1,4-dihydroquinoline-3-carboxylate obtained in the Reference Example 15 was added 10 ml of 12N hydrochloric acid, and the mixture was stirred under heating and reflux condition for 4 hours. After allowing to cool, the solid precipitate was collected by filtration, washed with water and ethanol successively, and dried to obtain 1.2 g of the title compound.