(3R,4S)-tert-butyl 3-(benzyloxycarbonylamino)-4-(bis(4-methoxyphenyl)(phenyl)methoxy)pyrrolidine-1-carboxylate → Benzyl (3r,4s)-4-hydroxypyrrolidin-3-ylcarbamate
Reaktionsgleichung
[CH2:1]([O:8][C:9]([NH:11][C@H:12]1[C@@H:16]([O:17]C(C2C=CC(OC)=CC=2)(C2C=CC(OC)=CC=2)C2C=CC=CC=2)[CH2:15][N:14](C(OC(C)(C)C)=O)[CH2:13]1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1>C(O)(C(F)(F)F)=O.ClCCl>[OH:17][C@H:16]1[CH2:15][NH:14][CH2:13][C@H:12]1[NH:11][C:9](=[O:10])[O:8][CH2:1][C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1Komponenten
3
Edukt 1
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A solution of (3R,4S)-tert-butyl 3-(benzyloxycarbonylamino)-4-(bis(4-methoxyphenyl)(phenyl)methoxy)pyrrolidine-1-carboxylate (2.18 g, 3.14 mmol) was stirred in a 10% TFA/dichloromethane solution (30 mL) for 30 minutes. The solution was concentrated under reduced pressure and the residue dissolved in ethyl acetate (15 mL) and treated with 2N HCl-diethyl ether (30 mL) for 1 hour. The resulting precipitate was collected by filtration and washed with ethyl acetate and dried to an off-white solid. The solid was dissolved in a 50% MeOH:dichloromethane solution (30 mL) and stirred with solid sodium carbonate (5 g) for 2.5 hours. The solids were collected by filtration and washed with 50% MeOH/dichloromethane solution and the filtrate concentrated under reduced pressure to give benzyl (3R,4S)-4-hydroxypyrrolidin-3-ylcarbamate (0.80 g, 99%).