反应详情

温度

70 °C

To a solution of 2,4-dichloro-6-methylquinoline (2.11 g, 10 mmol) and 1,3-diethyl propanedioate (2.64 g, 20 mmol) in N,N-dimethylformamide (40 mL) was added anhydrous potassium carbonate (2.8 g, 20 mmol). The mixture was stirred at 70° C. for 3 hours, then poured into ice/water (100 mL) and extracted with ethyl acetate (100 mL×3). The combined organic layers were washed with brine (150 mL×2), dried over sodium sulfate. The residue was purified by flash column chromatography on silica gel (eluting with 20-30% ethyl acetate in petroleum ether) to afford 1.34 g of the desired product (yield was 40%). MS obsd. (ESI+) [(M+H)+] 336.

1. extractionextracted with ethyl acetate (100 mL×3)
2. washThe combined organic layers were washed with brine (150 mL×2)
3. dry with materialdried over sodium sulfate
4. customThe residue was purified by flash column chromatography on silica gel (eluting with 20-30% ethyl acetate in petroleum ether)