Trifluoroacetic acid → HCID 23387586, Verbindung
Reaktionsgleichung
[C:1]([NH:11][C@H:12]([C:16]([O:18][C@@H:19]([CH3:32])[C:20]([O:22]CC1C=CC(OC)=CC=1)=[O:21])=[O:17])[CH:13]([CH3:15])[CH3:14])([O:3][CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1)=[O:2].FC(F)(F)C(O)=O>ClCCl>[C:1]([NH:11][C@H:12]([C:16]([O:18][C@@H:19]([CH3:32])[C:20]([OH:22])=[O:21])=[O:17])[CH:13]([CH3:14])[CH3:15])([O:3][CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1)=[O:2]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
To a solution of 4-methoxybenzyl (S)-(+)-2-(N-CBz-L-valyloxy)propionate (14.0 g, 31.5 mmole) in dichloromethane (50 ml) was added trifluoroacetic acid (25 ml) and the solution was stirred for five hours at room temperature. The solution was evaporated under reduced pressure and coevaporated two times with toluene. The product was isolated by silica gel column chromatography. Yield: 9.4 g=92%