Lithium Hydroxide → HCID 22933861, Verbindung

Reaktionsgleichung

[NH:1]1[C:9]2[C:4](=[CH:5][C:6]([O:10][CH:11]3[CH2:16][CH2:15][CH:14]([C:17]([O:19]CC)=[O:18])[CH2:13][CH2:12]3)=[CH:7][CH:8]=2)[CH:3]=[N:2]1.[OH-].[Li+]>CO.O1CCCC1>[NH:1]1[C:9]2[C:4](=[CH:5][C:6]([O:10][CH:11]3[CH2:12][CH2:13][CH:14]([C:17]([OH:19])=[O:18])[CH2:15][CH2:16]3)=[CH:7][CH:8]=2)[CH:3]=[N:2]1

Komponenten

Versuchsvorschrift

The ethyl 4-(1H-indazol-5-yloxy)cyclo-hexanecarboxylate (728.4 mg, 2.53 mmol) obtained in Example 367 was dissolved in a mixture of methanol (2.5 ml) and tetrahydrofuran (2.5 ml), and a 2M-aqueous lithium hydroxide solution (2.53 ml, 5.05 mmol) was added dropwise thereto. After 2 hours, the reaction mixture was concentrated under reduced pressure and the resulting residue was dissolved in water (5 ml). The resulting aqueous solution was adjusted to pH 4 with a 0.5M-aqueous potassium hydrogensulfate solution. The crystals formed were filtered under reduced pressure and then dried to obtain 4-(1H-indazol-5-yloxy)cyclohexanecarboxylic acid (381 mg, 58%).