反应详情

温度

65 °C

To a solution of 3-cyano-N-(2,4-dimethoxybenzyl)-4-(5,5-dimethyl-1,3,2-dioxaborinan-2-yl)-N-1,2,4-thiadiazol-5-ylbenzenesulfonamide (Preparation 29, 100 mg, 0.19 mmol) in tetrahydrofuran (2 mL) was added a 2 M aqueous solution of potassium carbonate (270 μL, 0.54 mmol) and 4-[2-(bromomethyl)-5-(trifluoromethyl)phenyl]pyridazine (Preparation 33, 57 mg, 0.18 mmol). The solution was sparged with nitrogen before the addition of tetrakis(triphenylphosphine)palladium (0) (20.8 mg, 0.018 mmol). The reaction mixture was heated at 65° C. for 6 hours. The reaction mixture was cooled to ambient temperature and partitioned between a saturated aqueous solution of ammonium chloride (5 mL) and ethyl acetate (2×10 mL). A saturated aqueous solution of sodium chloride was added to aid the separation. The combined organic layer was dried over anhydrous magnesium sulphate, filtered and concentrated in vacuo to give a brown oil. The material was purified by silica gel column chromatography (ISCO™ companion, 12 g column, 0-30% ethyl acetate in heptane gradient elution). Fractions containing product were combined and concentrated in vacuo to obtain the title compound as a foam.

1. temperatureThe reaction mixture was cooled to ambient temperature
2. custompartitioned between a saturated aqueous solution of ammonium chloride (5 mL) and ethyl acetate (2×10 mL)
3. additionA saturated aqueous solution of sodium chloride was added
4. customthe separation
5. dry with materialThe combined organic layer was dried over anhydrous magnesium sulphate
6. filtrationfiltered
7. concentrationconcentrated in vacuo
8. customto give a brown oil
9. customThe material was purified by silica gel column chromatography (ISCO™ companion, 12 g column, 0-30% ethyl acetate in heptane gradient elution)
10. additionFractions containing product
11. concentrationconcentrated in vacuo