反应详情

2-Benzyl-4-chloro-5-[4-(methylsulfonyl)phenyl]-3(2H)-pyridazinone prepared in Example 78 (150 mg, 0.4 mmol), thiophene-3-boronic acid (66.5 mg, 0.52 mmol), CsF (145.8 mg, 0.96 mmol), and tetrakis-(triphenylphosphine)-palladium(0) (13.9 mg, 0.012 mmol) in DME (25 mL) were stirred at reflux for 6 hours TLC (1CH2Cl2:1 hexanes:1.5 ethyl acetate) indicated that all starting materials were consumed. The reaction mixture was cooled to room temperature and concentrated under reduced pressure. The residue was partitioned between water and ethyl acetate. The organic layer was washed with brine, dried over MgSO4, and filtered. The filtrate was concentrated under reduced pressure. The residue was purified using a silica gel column (0.5:2.5:0.5 CH2Cl2/hexanes/ethyl acetate). A yellow powder was obtained (yield: 50 mg, 31%). 1H NMR (300 MHz, CDCl3) δ 3.09 (s, 3H), 5.41 (s, 2H), 6.72 (dd, J=1.5 Hz, 9 Hz, 1H), 7.13 (dd, J=3 Hz, 3 Hz, 1H), 7.3-7.45 (m, 5H), 7.5-7.6 (m, 3H), 7.78 (s, 1H), 7.92 (d, 9 Hz, 2H). MS (DCI/NH3) m/z 423 (M+H)+. Anal. calc. for C22H18N2O3S2.0.5H2O: C, 6.23; H, 4.43; N, 6.49. Found C, 61.29; H, 4.40; N, 6.16.

1. customwere consumed
2. concentrationconcentrated under reduced pressure
3. customThe residue was partitioned between water and ethyl acetate
4. washThe organic layer was washed with brine
5. dry with materialdried over MgSO4
6. filtrationfiltered
7. concentrationThe filtrate was concentrated under reduced pressure
8. customThe residue was purified
9. customA yellow powder was obtained (yield: 50 mg, 31%)