反应详情

From 2 to 3 mmol of the appropriate 3-(pyridin-3-yloxy)propylamine in 5 ml of THF are admixed in succession with 500 mg of maleic anhydride (molecular mass: 98.06; 5.1 mmol) and 200 mg of p-toluenesulphonic acid hydrate (molecular mass: 190.22; 1.0 mmol). The solution is refluxed for 24 hours and concentrated to dryness. The residue is chromatographed on silica gel to give the desired 1-[3-(pyridin-3-yloxy)propyl]-pyrrole-2,5-dione derivative.

1. temperatureThe solution is refluxed for 24 hours
2. concentrationconcentrated to dryness
3. customThe residue is chromatographed on silica gel