反应详情

To 2.0 g of 4-chloro-6-fluoro-[1.7]naphthyridine-3-carbonitrile in 50 mL of methanol was added 1.9 g of 2,4-dichloroaniline. After refluxing the reaction under an inert atmosphere for 2 hours, the reaction mixture was poured into a mixture of brine and saturated aqueous sodium bicarbonate and the resultant crystals were filtered and washed with water. The product was then recrystallized from chloroform/hexanes. Drying in vacuo yielded 2.6 g (80%) of 4-(2,4-dichloro-phenylamino)-6-fluoro-[1.7]naphthyridine-3-carbonitrile as yellow needles: melting point 206-208° C.; mass spectrum (m/e): M+H 332.8.

1. temperatureAfter refluxing
2. customthe reaction under an inert atmosphere for 2 hours
3. filtrationthe resultant crystals were filtered
4. washwashed with water
5. customThe product was then recrystallized from chloroform/hexanes
6. customDrying in vacuo