4-[4-(4-Chloro-phenoxy)-benzenesulfonyl]-1-ethyl-piperidine-4-carboxylic acid ethyl ester → 4-[4-(4-Chloro-phenoxy)-benzenesulfonyl]-1-ethyl-piperidine-4-carboxylic acid
反応式
C([O:3][C:4]([C:6]1([S:14]([C:17]2[CH:22]=[CH:21][C:20]([O:23][C:24]3[CH:29]=[CH:28][C:27]([Cl:30])=[CH:26][CH:25]=3)=[CH:19][CH:18]=2)(=[O:16])=[O:15])[CH2:11][CH2:10][N:9]([CH2:12][CH3:13])[CH2:8][CH2:7]1)=[O:5])C>C1COCC1.CO.[OH-].[Na+]>[Cl:30][C:27]1[CH:26]=[CH:25][C:24]([O:23][C:20]2[CH:19]=[CH:18][C:17]([S:14]([C:6]3([C:4]([OH:5])=[O:3])[CH2:11][CH2:10][N:9]([CH2:12][CH3:13])[CH2:8][CH2:7]3)(=[O:15])=[O:16])=[CH:22][CH:21]=2)=[CH:29][CH:28]=1参加物
4
実験手順
4-[4-(4-Chloro-phenoxy)-benzenesulfonyl]-1-ethyl-piperidine-4-carboxylic acid was prepared starting from 4-[4-(4-chloro-phenoxy)-benzenesulfonyl]-1-ethyl-piperidine-4-carboxylic acid ethyl ester (3.02 g, 6.7 mmol) dissolved in THF:methanol (3:1 150 ml) and 10N NaOH (20 ml). The resulting reaction mixture was worked up as outlined in example 83. Yield 1.8 g (65%); white solid; mp 184° C.; MS: 423.9 (M+H)+