Acetaldehyde → 2-[N-(Methylmethylene)amino]-4methylpentanoic acid, tert-butyl ester
Reaktionsgleichung
[C:1]([O:5][C:6](=[O:13])[C@H:7]([CH2:9][CH:10]([CH3:12])[CH3:11])[NH2:8])([CH3:4])([CH3:3])[CH3:2].[CH:14](=O)[CH3:15].S([O-])([O-])(=O)=O.[Na+].[Na+]>>[CH3:14][CH:15]=[N:8][CH:7]([CH2:9][CH:10]([CH3:11])[CH3:12])[C:6]([O:5][C:1]([CH3:4])([CH3:3])[CH3:2])=[O:13]Komponenten
4
Versuchsvorschrift
A solution of leucine tert-butyl ester (2.0 g, 8.9 mmol) and acetaldehyde (999 ul, 17.9 mmol) was stirred at room temperature for 5 minutes. Anhydrous sodium sulphate was added and the mixture stirred at room temperature for 18 hours. The solid was removed by filtration and the solvent evaporated in vacuo to afford the title compound as an oil.