反应详情

2,2-Dimethylpropionic acid [1-(2,2-dimethylpropionyloxymethyl)-7-(2-formylphenyl)-2,6-dioxo-1,2,6,7-tetrahydropurin-3-yl]methyl ester (2.50 g) and N-chlorosuccinimide (896 mg) were dissolved in N,N-dimethylformamide (25 ml), and the mixture was stirred at room temperature for 8 hours. The reaction mixture was diluted with ethyl acetate and washed with water. The organic layer was dried over anhydrous magnesium sulfate and filtered. The filtrate was concentrated under reduced pressure and the residue was purified by silica gel column chromatography to give 2.0 g of the title compound from the elution fraction of hexane-ethyl acetate (2:1).

1. washwashed with water
2. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
3. filtrationfiltered
4. concentrationThe filtrate was concentrated under reduced pressure
5. customthe residue was purified by silica gel column chromatography