1-Butyl-4-[4-(4-chloro-phenoxy)-benzenesulfonyl]-piperidine-4-carboxylic acid ethyl ester → 1-Butyl-4-[4-(4-chloro-phenoxy)-benzenesulfonyl]-piperidine-4-carboxylic acid
反応式
C([O:3][C:4]([C:6]1([S:16]([C:19]2[CH:24]=[CH:23][C:22]([O:25][C:26]3[CH:31]=[CH:30][C:29]([Cl:32])=[CH:28][CH:27]=3)=[CH:21][CH:20]=2)(=[O:18])=[O:17])[CH2:11][CH2:10][N:9]([CH2:12][CH2:13][CH2:14][CH3:15])[CH2:8][CH2:7]1)=[O:5])C>C1COCC1.CO.[OH-].[Na+]>[CH2:12]([N:9]1[CH2:10][CH2:11][C:6]([S:16]([C:19]2[CH:24]=[CH:23][C:22]([O:25][C:26]3[CH:31]=[CH:30][C:29]([Cl:32])=[CH:28][CH:27]=3)=[CH:21][CH:20]=2)(=[O:18])=[O:17])([C:4]([OH:5])=[O:3])[CH2:7][CH2:8]1)[CH2:13][CH2:14][CH3:15]参加物
4
実験手順
1-Butyl-4-[4-(4-chloro-phenoxy)-benzenesulfonyl]-piperidine-4-carboxylic acid was prepared starting from 1-butyl-4-[4-(4-choro-phenoxy)-benzenesulfonyl]-piperidine-4-carboxylic acid ethyl ester (3.3 g, 6.9 mmol) dissolved in THF:methanol (3:1 150 ml) and 10 N NaOH (25 ml). The resulting reaction mixture was worked up as outlined in example 83. Yield 2.08 g (67%); white solid; mp 201° C.; MS: 451.9 (M+H)+