Benzyl (isobutylcarbamoyl)glycinate → (Isobutylcarbamoyl)glycine
反応式
[CH2:1]([NH:5][C:6]([NH:8][CH2:9][C:10]([O:12]CC1C=CC=CC=1)=[O:11])=[O:7])[CH:2]([CH3:4])[CH3:3]>[Pd].C(O)(C)C>[CH2:1]([NH:5][C:6]([NH:8][CH2:9][C:10]([OH:12])=[O:11])=[O:7])[CH:2]([CH3:4])[CH3:3]参加物
4
反応条件
- 温度
- 60 °C
実験手順
Charge benzyl 2-(isobutylcarbamoylamino)acetate (200 g; 98.1% assay), dry Pd/C (20 g; 10% w/w), and isopropyl alcohol (2000 ml) into an autoclave. Degas under vacuum and purge with hydrogen three times. Stir at 60° C. under 50-60 psi of H2 for 4 hours. Cool the mixture to 20-30° C. and filter through diatomaceous earth and concentrate the filtrate under reduced pressure at 45-50° C. to 1-2 Vol. Add acetonitrile (1000 ml) and concentrate under reduced pressure at 45-50° C. to 2-3 Vol. Cool the mixture to 5-10° C. and filter. Dry the cake under reduced pressure at 45-50° C. to give of 2-(isobutylcarbamoylamino)acetic acid (112 g; 95.2% assay; 82.5% yield).