Trifluoroacetic acid → HCID 57222681, Verbindung
Reaktionsgleichung
[CH2:1]([C@H:8]([NH:19]C(=O)OC(C)(C)C)[C@H:9]([OH:18])[CH2:10][NH:11][O:12][CH:13]([CH2:16][CH3:17])[CH2:14][CH3:15])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.FC(F)(F)C(O)=O>>[NH2:19][C@@H:8]([CH2:1][C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1)[C@H:9]([OH:18])[CH2:10][NH:11][O:12][CH:13]([CH2:16][CH3:17])[CH2:14][CH3:15]Komponenten
3
Versuchsvorschrift
A mixture of tert-butyl (1S,2R)-1-benzyl-3-[(1-ethylpropoxy)amino]-2-hydroxypropylcarbamate (3.285 g, 8.98 mmol) and trifluoroacetic acid (25 mL) was stirred at ambient temperature under Argon for approximately 30 minutes. The reaction was evaporated in vacuo and the residue was partitioned between dichloromethane and aqueous sodium hydroxide (1N). The phases were separated and the aqueous phase was extracted with dichloromethane. The combined organic phases were dried over anhydrous sodium sulfate, filter, evaporated in vacuo and dried under high vacuum to provide (2R,3S)-3-amino-1-[(1-ethylpropoxy)amino]-4-phenyl-2-butanol (2.455 g, 100%) as a solid. H1-NMR (chloroform-D3): 0.94 (m, 6H), 1.56 (m, 4H), 2.55 (m, 1H), 3.01 (m, 2H), 3.22 (m, 2H), 3.51 (m, 1H), 3.81 (m, 1H), 7.30 (m, 5H). MS(ESI): 267(M+H).