反应详情

温度

0 °C

1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (192 mg, 1.0 mmol) was added to a solution of 6-amino-4[(3-bromophenyl)amino]quinazoline (158 mg, 0.5 mmol) and 4,4,4,-trifluorobut-2-enoic acid (153 mg, 1.1 mmol) in THF/DMF (4:1, 2.5 mL), stirred under nitrogen at 0° C. After 1 hour water (10 mL) was added and after 15 minutes the precipitate was collected by Buchner filtration. The residue was rinsed with water (2×5 mL) and ether (10 mL) and air dried. The solid was suspended in EtOAc, (10 mL) refluxed briefly, and sonicated for 10 minutes, and the solid was collected by Buchner filtration, rinsed with EtOAc (5 mL) and dried in a vacuum oven at 75° C. for 1.5 hours to give N-[4-[(3-bromophenyl)amino]-quinazolin-6-yl]4,4,4-trifluorobut-2-enamide 0.4 hydrochloride (76 mg, 33%) as a light yellow solid, mp 273-278° C.

1. filtrationwas collected by Buchner filtration
2. washThe residue was rinsed with water (2×5 mL) and ether (10 mL) and air
3. customdried
4. temperaturerefluxed briefly
5. customsonicated for 10 minutes
6. filtrationthe solid was collected by Buchner filtration
7. washrinsed with EtOAc (5 mL)
8. customdried in a vacuum oven at 75° C. for 1.5 hours