Triethylamine → benzyl N-[2-ethylhexanoyl]-(L)-pyroglutamate
Reaktionsgleichung
[NH:1]1[C:5](=[O:6])[CH2:4][CH2:3][C@H:2]1[C:7]([O:9][CH2:10][C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1)=[O:8].C(N(CC)CC)C.[CH2:24]([CH:26]([CH2:30][CH2:31][CH2:32][CH3:33])[C:27](Cl)=[O:28])[CH3:25]>C(Cl)(Cl)Cl>[CH2:24]([CH:26]([CH2:30][CH2:31][CH2:32][CH3:33])[C:27]([N:1]1[C:5](=[O:6])[CH2:4][CH2:3][C@H:2]1[C:7]([O:9][CH2:10][C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1)=[O:8])=[O:28])[CH3:25]Komponenten
5
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
39.4 g (180 mmol) of benzyl (L)-pyroglutamate, prepared according to Example II(1), are dissolved in 160 ml of chloroform and 28.4 g (28 mmol) of triethylamine at ordinary temperature. A solution of 29.3 g (180 mmol) of 2-ethylhexanoyl chloride in 40 ml of chloroform is run in and the mixture is heated under reflux for 5 hours.