Methanol → HCID 15840441、化合物

反応式

C(O[N:6]1[CH2:11][CH2:10][CH:9]([O:12][C:13]2[CH:18]=[CH:17][C:16]([CH2:19][C:20]([O:22]C)=[O:21])=[C:15]([O:24][CH2:25][C:26]([F:29])([F:28])[F:27])[CH:14]=2)[CH2:8][C:7]1=C=O)(C)(C)C.[OH-:32].[Na+].[CH3:34][OH:35]>>[C:16]([O:32][C:34]([N:6]1[CH2:7][CH2:8][CH:9]([O:12][C:13]2[CH:18]=[CH:17][C:16]([CH2:19][C:20]([OH:22])=[O:21])=[C:15]([O:24][CH2:25][C:26]([F:29])([F:28])[F:27])[CH:14]=2)[CH2:10][CH2:11]1)=[O:35])([CH3:19])([CH3:17])[CH3:15]

参加物

反応物 3

HCID 887Methanol

HCID 14798Sodium Hydroxide

HCID 86754650HCID 86754650、化合物

生成物 1

HCID 15840441HCID 15840441、化合物

実験手順

To a stirred solution of methyl 4-(N-tert-butyloxy-carbonyl-4-piperidinyloxy)-2-(2,2,2-trifluoroethoxy)phenylacetate (3.0 g, MW=435, 6.90 mmol) from Step 7 above in MeOH (25 mL) was added a solution of aqueous NaOH (6.9 mL of a 2.0 N solution, 13.8 mmol). The mixture was refluxed for 3 h and then cooled to ambient temperature. The solvents were removed under reduced pressure and the residue was partitioned between EtOAc (100 mL) and 0.25 M aqueous citric acid (75 mL). The organic phase was separated and washed with H2O (25 mL) and brine (25 mL). The organic phase was dried (MgSO4), filtered, and the solvent was removed under reduced pressure. 4-(N-tert-butyloxycarbonyl-4-piperidinyloxy)-2-(2,2,2-trifluoroethoxy)phenylacetic acid was obtained as an amorphous solid (HPLC retention time=9.4 min (method A)).