反应详情

A mixture of 8-(2-chloroethoxy)-4-(2,4-dichloro-5-methoxyanilino)-7-methoxybenzo[b][1,8]naphthyridine-3-carbonitrile (202 mg, 0.40 mmol) and sodium iodine (70 mg, 0.47 mmol) in 4 mL of morpholine is heated at reflux for 2 hours. The reaction mixture is concentrated in vacuo and partitioned between ethyl acetate and water. The organic layer is washed with saturated sodium bicarbonate, dried over magnesium sulfate, filtered and concentrated in vacuo. Ethyl acetate is added to the residue and the orange solid is collected by filtration to provide 105 mg (47%) of 4-(2,4-dichloro-5-methoxyanilino)-7-methoxy-8-[2-(4-morpholinyl)ethoxy]benzo[b][1,8]naphthyridine-3-carbonitrile, mp 242-244° C. dec.

1. temperatureis heated
2. temperatureat reflux for 2 hours
3. concentrationThe reaction mixture is concentrated in vacuo
4. custompartitioned between ethyl acetate and water
5. washThe organic layer is washed with saturated sodium bicarbonate
6. dry with materialdried over magnesium sulfate
7. filtrationfiltered
8. concentrationconcentrated in vacuo
9. additionEthyl acetate is added to the residue
10. filtrationthe orange solid is collected by filtration