反应详情

A solution of F1 (1.5 eq), F2 (1 eq) and NaHCO3 (2.5 eq) in a mixture of CH3CN and H2O (20:1) was heated at reflux for 12 hrs and then the MeCN was removed under reduced pressure. The resulting residue was diluted with DCM, washed with 1N HCl solution (2×) and then with brine; dried (Na2SO4), filtered and concentrated under reduced pressure. The resulting residue was purified by Biotage system eluting with EtOAc/petrol ether to obtain the desired compound. MS (ES) C24H19ClFN3O3 requires: 451, found: 452 (M+H)+. 1H NMR (400 MHz, DMSOd6) δ: 11.92 (1H, br. S), 7.91 (1H, dd, J=6.2, 1.9 Hz), 7.78-7.71 (1H, m), 7.54 (1H, t, J=9.0 Hz), 7.17-7.11 (1H, m), 7.07-7.04 (1H, m), 6.62-6.57 (1H, m), 6.56-6.20 (2H, m), 4.75 (2H, br. S), 4.46 (2H, br. S), 3.81-3.72 (6H, m).

1. temperaturewas heated
2. temperatureat reflux for 12 hrs
3. customthe MeCN was removed under reduced pressure
4. additionThe resulting residue was diluted with DCM
5. washwashed with 1N HCl solution (2×)
6. dry with materialdried (Na2SO4)
7. filtrationfiltered
8. concentrationconcentrated under reduced pressure
9. customThe resulting residue was purified by Biotage system
10. washeluting with EtOAc/petrol ether