反应详情

To a solution of 1.4 g (4.12 mmol) of 6-amino-4-(3-bromo-phenylamino)-[1.8]naphthyridine-3-carbonitrile and 1.67 g (16.5 mmol) of N-methyl-morpholine in a mixture of 6 ml of N,N-dimethylformamide and 35 ml of tetrahydrofuran was added with stirring at 0° C. a solution of 0.52 g (5.76 mmol) of acryloyl chloride in 10 ml of tetrahydrofuran over 10 min. After 3 hr at 0° C., the most of the solvent was removed saturated sodium bicarbonate was added. Solid was collected and washed with water. After air drying, the solid was extracted with 500 ml of boiling tetrahydrofuran. The tetrahydrofuran was removed and the residue was purified on a silica gel column eluting with ethyl acetate-methanol mixtures giving 0.29 g of the title compound as a yellow solid: mass spectrum (electrospray, m/e): M+H 394, 396.

1. additionwas added
2. customthe most of the solvent was removed saturated sodium bicarbonate
3. additionwas added
4. customSolid was collected
5. washwashed with water
6. customAfter air drying
7. extractionthe solid was extracted with 500 ml of boiling tetrahydrofuran
8. customThe tetrahydrofuran was removed
9. customthe residue was purified on a silica gel column
10. washeluting with ethyl acetate-methanol