Potassium Carbonate → (2S, 4S)-4-Hydroxy-2-methyl-pyrrolidine-1-carboxylic acid tert-butyl ester
반응식
C([O:9][C@@H:10]1[CH2:14][N:13]([C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16])[C@@H:12]([CH3:22])[CH2:11]1)(=O)C1C=CC=CC=1.C([O-])([O-])=O.[K+].[K+]>CO>[OH:9][C@@H:10]1[CH2:14][N:13]([C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16])[C@@H:12]([CH3:22])[CH2:11]1참가 물질
4
실험 절차
To a solution of the ester of step B (1.0 g, 3.48 mmol) in MeOH (30 mL) was added K2CO3 (1.2 g, 8.7 mmol). After being stirred at room temperature for 4 hours, the solution was concentrated. The residue was taken up in ether. The resulting solution was washed with brine, dried over MgSO4 and concentrated. Flash chromatography eluting with a gradient of 0% to 20% to 40% EtOAc/hexanes provided 0.56 g of the title compound. MS calculated (M+H)+ 202, found 202.1.