Trifluoroacetic acid → 1-(2-aminoethyl)-2,3-dihydro-1H-imidazol-2-one; trifluoroacetic acid
Reaktionsgleichung
[F:1][C:2]([F:7])([F:6])[C:3]([OH:5])=[O:4].C(OC(=O)[NH:14][CH2:15][CH2:16][N:17]1[CH:21]=[CH:20][NH:19][C:18]1=[O:22])(C)(C)C>ClCCl>[F:1][C:2]([F:7])([F:6])[C:3]([OH:5])=[O:4].[NH2:14][CH2:15][CH2:16][N:17]1[CH:21]=[CH:20][NH:19][C:18]1=[O:22]Komponenten
4
Versuchsvorschrift
Add trifluoro-acetic acid (10 mL) to a solution of [2-(2-oxo-2,3-dihydro-imidazol-1-yl)-ethyl]-carbamic acid tert-butyl ester (2.5 g, 11 mmol) in dichloromethane (10 mL). Stir the mixture for 3 hours. Remove most of the solvent and trifluoro-acetic acid on a rotovap and dry the yellowish thick oil under vacuum to get the product. GCMS (EI) m/z 127 M+.