Lithium Hydroxide → HCID 56589687, Verbindung
Reaktionsgleichung
C[O:2][C:3](=[O:41])[C:4]1[CH:9]=[CH:8][C:7]([O:10][C:11]2[S:15][C:14]([NH:16][C:17](=[O:40])[CH:18]([C:28]3[CH:33]=[CH:32][C:31]([S:34]([CH:37]4[CH2:39][CH2:38]4)(=[O:36])=[O:35])=[CH:30][CH:29]=3)[O:19][C:20]3[CH:25]=[CH:24][C:23]([F:26])=[CH:22][C:21]=3[F:27])=[N:13][CH:12]=2)=[CH:6][CH:5]=1.[Li+].[OH-]>C1COCC1.CO>[CH:37]1([S:34]([C:31]2[CH:30]=[CH:29][C:28]([CH:18]([O:19][C:20]3[CH:25]=[CH:24][C:23]([F:26])=[CH:22][C:21]=3[F:27])[C:17]([NH:16][C:14]3[S:15][C:11]([O:10][C:7]4[CH:6]=[CH:5][C:4]([C:3]([OH:41])=[O:2])=[CH:9][CH:8]=4)=[CH:12][N:13]=3)=[O:40])=[CH:33][CH:32]=2)(=[O:35])=[O:36])[CH2:38][CH2:39]1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
4-{2-[2-(4-Cyclopropanesulfonyl-phenyl)-2-(2,4-difluoro-phenoxy)-acetylamino]thiazol-5-yloxy}-benzoic acid methyl ester (1.4 g, 2.33 mmol, obtained in example A74) was taken in THF: MeOH (1:1, 20 mL), to it was added aqueous solution of LiOH (0.34 g, 7.94 mmol in 10 mL water) and stirred for 1-4 h. After completion of the reaction, organic solvent was removed under reduced pressure. The aqueous layer was washed with diisopropyl ether then acidified with 1 N HCl to pH 2. The solid formed was filtered, washed with water, followed by washing with diisopropyl ether & dried under vacuum to get the title compound (1.17 g, 86%).