反应详情

温度

60 °C

A mixture of 2-{3-bromo-5-[1-(triphenylmethyl)(1,2,4-triazol-3-yl)]-1H-indazolyl}perhydro-2H-pyran (300 mg, 0.508 mmol), 4-trifluoromethylphenylboronic acid (144 mg 0.758 mmol, 1.49 equiv.), [1,1′-bis(diphenylphosphino)-ferrocene}dichloropalladium (II) complex with dichloromethane (Aldrich), 41.5 mg (0.0508 mmol, 0.100 equiv.), 2.53 mL of anhydrous DME, and powdered potassium phosphate (K3PO4, 535 mg, 2.52 mmol, 4.96 equiv.) were refluxed for 5 days. The reaction was diluted with CH2Cl2, washed with 2×sat. aq. NaHCO3, dried (Na2SO4), filtered, and concentrated. The crude material was purified by silica gel using 30–40% EtOAc in hexanes. To the purified material was added 5.00 mL of MeOH, and 5.00 mL of 6.0 N aq. HCl. The mixture was heated at 60° C. for 24 h. The reaction mixture was filtered. The solid was further purified by silica gel chromatography using EtOAc affording the title compound (69.3 mg). Further purification by prep HPLC afforded the title compound (18.9 mg, 11.3% yield): 1H NMR (CDCl3/CD3OD) δ 8.74 (s, 1H), 8.41–7.97 (m, 4H), 7.78 (d, 2H), 7.66 (d, 1H); ES-MS (m/z) 330 [M+1]+.

1. temperaturewere refluxed for 5 days
2. washwashed with 2×
3. dry with materialaq. NaHCO3, dried (Na2SO4)
4. filtrationfiltered
5. concentrationconcentrated
6. customThe crude material was purified by silica gel using 30–40% EtOAc in hexanes
7. additionTo the purified material was added 5.00 mL of MeOH, and 5.00 mL of 6.0 N aq. HCl
8. filtrationThe reaction mixture was filtered
9. customThe solid was further purified by silica gel chromatography
10. customFurther purification by prep HPLC