反应详情

55 μl (0.397 mmol) of triethylamine and 40 mg (0.397 mmol) of succinic anhydride are added to a suspension of 100 mg (0.378 mmol) of 5-aminomethyl-2,3-dimethoxy-7-nitro-quinoxaline in 2 ml of tert-butyl methyl ether and the mixture is stirred for 3 hours at room temperature. The mixture is then filtered and the residue is washed twice with tert-butyl methyl ether. The filter residue is chromatographed on silica gel with dichloromethane/methanol/acetic acid (95:4.5:0.5). The title compound is obtained in the form of a beige powder.

1. filtrationThe mixture is then filtered
2. washthe residue is washed twice with tert-butyl methyl ether
3. customThe filter residue is chromatographed on silica gel with dichloromethane/methanol/acetic acid (95:4.5:0.5)