反应详情

Benzyloxycarbonylglycylglycine (3.99 g, 15 mmole) was suspended in a solution of anhydrous sodium acetate (0.9 g, 11 mmole) in glacial acetic acid (75 ml). The mixture was stirred and ice-cooled while being electrolysed (two 5 sq. cm. platinum foil electrodes placed 2 mm apart) using a current of 200-250 mA for 5 hours. The acetic acid was evaporated under reduced pressure and the residue was dissolved in ethyl acetate (150 ml). The solution was washed with saturated sodium bicarbonate solution (5) ml portions, until the wash remained alkaline) and then with water (50 ml). The solution was dried (magnesium sulphate) and the solvent was evaporated under reduced pressure to yield the title compound as colourless crystals (1.85 g, 6.6 mmole).

1. temperatureice-cooled
2. customfor 5 hours
3. customThe acetic acid was evaporated under reduced pressure
4. dissolutionthe residue was dissolved in ethyl acetate (150 ml)
5. washThe solution was washed with saturated sodium bicarbonate solution (5) ml portions, until the wash
6. dry with materialThe solution was dried (magnesium sulphate)
7. customthe solvent was evaporated under reduced pressure