反应详情

温度

150 °C

A mixture of 5.0 g of 1-nitro-2-(1,3-pentadienyl)benzene and 2.9 g of maleic anhydride was stirred at 150° C. for 5 hours. Thereto were added 150 ml of toluene and 3.2 ml of benzylamine. The resulting mixture was azeotropically refluxed for 2 hours, and then cooled to room temperature. Thereto were added 150 ml of ethyl acetate and 100 ml of water. The organic layer was separated and dried over anhydrous magnesium sulfate. The solvent was removed by distillation under reduced pressure. The residue was purified by column chromatography (eluant: toluene/ethyl acetate=1/0 to 20/1) to obtain 3.0 g (yield: 30%) of N-benzyl-3-methyl-6-(2-nitrophenyl)-1,2,3,6-tetrahydrophthalimide as colorless crystals.

1. temperatureThe resulting mixture was azeotropically refluxed for 2 hours
2. temperaturecooled to room temperature
3. customThe organic layer was separated
4. dry with materialdried over anhydrous magnesium sulfate
5. customThe solvent was removed by distillation under reduced pressure
6. customThe residue was purified by column chromatography (eluant: toluene/ethyl acetate=1/0 to 20/1)