反应详情

(2-(trifluoromethyl)phenyl)hydrazine (CAS no. 365-34-4) (102 mg, 0.58 mmol) was added to 4,6-diphenoxypyrimidine-5-carbaldehyde (Intermediate Z2) (169 mg, 0.58 mmol) in THF (2 mL) the resulting solution was stirred at room temperature for 5 minutes. 2-tert-butylimino-2-diethylamino-1,3-dimethyl-perhydro-1,3,2-diazaphosphorine on polystyrene (526 mg, 1.16 mmol) was added and sealed into a microwave tube. The reaction was heated to 150° C. for 10 hours in a microwave reactor and cooled to RT. The reaction mixture was filtered and evaporated to dryness. The crude product was purified by flash silica chromatography, eluting with 10 to 80% ethyl acetate in isohexane to afford the product (88 mg, 42.7%). 1H NMR (400 MHz, CDCl3) δ 7.29-7.33 (2H, m), 7.34-7.39 (1H, m), 7.49-7.58 (3H, m), 7.67-7.71 (1H, m), 7.74-7.78 (1H, m), 7.90-7.92 (1H, m), 8.08 (1H, s), 8.56 (1H, s); m/z (ES+) (M+H)+=357; HPLC tR=2.66 min.

1. customsealed into a microwave tube
2. temperatureThe reaction was heated to 150° C. for 10 hours in a microwave reactor
3. temperaturecooled to RT
4. filtrationThe reaction mixture was filtered
5. customevaporated to dryness
6. customThe crude product was purified by flash silica chromatography
7. washeluting with 10 to 80% ethyl acetate in isohexane