反应详情

4-(4-Nitrophenyl)-2-(4-trifluoromethyl-phenyl)-pyrimidine. To 82.7 mg (3.60 mmol) of sodium metal dissolved in 3 mL of absolute EtOH was added 938 mg (3.60 mmol) of 4-trifluoromethylbenzamidine hydrochloride dihydrate followed by 4 mL of EtOH. After 30 min, 498 mg (2.26 mmol) of 3-dimethylamino-1-(4-nitrophenyl)-propenone was added and the mixture was heated at reflux approximately 66 h and was allowed to cool. The mixture was concentrated to a tan solid which was triturated under saturated sodium bicarbonate. The solid was collected and air dried to give 937 mg. It was then dissolved in chloroform/EtOAc and was passed over silica gel eluting with 7:3 chloroform/EtOAc to afford 710 mg (91%) of the title compound. 1H NMR ε 9.01 (d, J=5.3 Hz, 1H), 8.73 (d, J=8.2 Hz, 2H), 8.43 (s, 4H), 7.82 (d, J=8.1 Hz, 2H), 7.76 (d, J=5.2 Hz, 1H); EIMS 345 (M+, 100), 299 (57); mp 175-176.5° C. Anal. Calcd. for C17H10F3N3O2: C, 59.13; H, 2.92; N, 12.17. Found: C, 58.82; H, 2.63; N, 11.98.

1. temperaturethe mixture was heated
2. temperatureat reflux approximately 66 h
3. temperatureto cool
4. concentrationThe mixture was concentrated to a tan solid which
5. customwas triturated under saturated sodium bicarbonate
6. customThe solid was collected
7. customair dried
8. customto give 937 mg