Trifluoroacetic acid → 5-Chloro-1H-indole-2-carboxylic acid (1-benzyl-2-oxo-2-piperazin-1-yl-ethyl)-amide
Reaktionsgleichung
FC(F)(F)C(O)=O.C(OC([N:15]1[CH2:20][CH2:19][N:18]([C:21](=[O:43])[CH:22]([NH:30][C:31]([C:33]2[NH:34][C:35]3[C:40]([CH:41]=2)=[CH:39][C:38]([Cl:42])=[CH:37][CH:36]=3)=[O:32])[CH2:23][C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)[CH2:17][CH2:16]1)=O)(C)(C)C>>[CH2:23]([CH:22]([NH:30][C:31]([C:33]1[NH:34][C:35]2[C:40]([CH:41]=1)=[CH:39][C:38]([Cl:42])=[CH:37][CH:36]=2)=[O:32])[C:21](=[O:43])[N:18]1[CH2:17][CH2:16][NH:15][CH2:20][CH2:19]1)[C:24]1[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=1Komponenten
3
Versuchsvorschrift
Trifluoroacetic acid (4 ml) was added to 4-{2-[(5-chloro-1H-indole-2-carbonyl)-amino]-3-phenyl-propionyl}-piperazine-1-carboxylic acid tert-butyl ester (0.6 mmol) at 0° C. and the resulting solution was stirred for 0.3 hours and concentrated. The residue was partitioned between ethyl acetate and 2 N NaOH, the organic layer separated and washed with brine, dried over Na2SO4, concentrated and the resulting solid triturated with ether: Yield 189 mg, 77%; HPLC (60/40) 2.63 minutes (99%);
Aufarbeitung
- concentrationconcentrated
- custom