Sodium Hydroxide → [2-(4-Chloro-phenyl)-2,4,5,6-tetrahydro-cyclopentapyrazol-3-yl]-cyclohexyl-acetic acid
반응식
C([O:3][C:4](=[O:27])[CH:5]([C:12]1[N:13]([C:20]2[CH:25]=[CH:24][C:23]([Cl:26])=[CH:22][CH:21]=2)[N:14]=[C:15]2[CH2:19][CH2:18][CH2:17][C:16]=12)[CH:6]1[CH2:11][CH2:10][CH2:9][CH2:8][CH2:7]1)C.[OH-].[Na+]>CO>[Cl:26][C:23]1[CH:22]=[CH:21][C:20]([N:13]2[C:12]([CH:5]([CH:6]3[CH2:11][CH2:10][CH2:9][CH2:8][CH2:7]3)[C:4]([OH:27])=[O:3])=[C:16]3[CH2:17][CH2:18][CH2:19][C:15]3=[N:14]2)=[CH:25][CH:24]=1참가 물질
4
실험 절차
A solution of [2-(4-chloro-phenyl)-2,4,5,6-tetrahydro-cyclopentapyrazol-3-yl]-cyclohexyl-acetic acid ethyl ester (1 g, 2.6 mmol; example 1.3) in MeOH (56 ml) and 4 N aqueous NaOH (9.7 ml, 39 mmol) was stirred at ambient temperature for 14 h. The solvent was removed under reduced pressure, ice water/TBME 1/1 was added and the layers were separated. The aqueous layer was extracted one more time with TBME. The aqueous layer was acidified with 1 N aqueous HCl solution and extracted two times with iPrOAc. The combined extracts were washed with ice water/brine 1/1 and dried over Na2SO4. After filtration the solvent was removed under reduced pressure to give the title compound (570 mg, 1.59 mmol; 61%) as yellow oil which was sufficiently pure to be used in the next step. MS: m/e=359.2 [M+H+].