反应详情

温度

250 °C

4-Oxo-6-methoxy-2,3-dihydrofuro[3,2-c]quinoline (217 mg, 1.0 mmol) was dissolved in 10 ml of diethylene glycol in a pressure tube and of 2-methylaniline (282 μl, 2.5 mmol) was added under nitrogen. The reaction mixture was heated at 250° C. for 15 hours. The reaction mixture was diluted with 20 ml of salt water and the aqueous layer was extracted with methylene chloride (15 ml×3). After layer with water (15 ml×3), the organic layer was dried with anhydrous magnesium sulfate and filtrated to be concentrated under reduced pressure. The residue was purified with ethyl acetate as a development solution according to silica gel chromatography to obtain 260 mg of desired compound as solid in 81% of yield.

1. additionwas added under nitrogen
2. extractionthe aqueous layer was extracted with methylene chloride (15 ml×3)
3. dry with materialAfter layer with water (15 ml×3), the organic layer was dried with anhydrous magnesium sulfate
4. filtrationfiltrated
5. concentrationto be concentrated under reduced pressure
6. customThe residue was purified with ethyl acetate as a development solution