反应详情

To a solution of [6-chloro-4-(4-fluoro-2-methoxy-phenyl)-pyridazin-3-yl]-methyl-amine (95 mg, 355 μmol) in dichloromethane (5 mL) was added 3-methanesulfonyl-5-trifluoromethyl-benzoic acid (95.2 mg, 355 mmol) and 2-bromo-1-ethylpyridinium tetrafluoroborate (117 mg, 426 μmol, CAS RN 878-23-9) and N-ethyldiisopropyl-amine (91.7 mg, 124 μL, 710 μmol). The reaction mixture was stirred at room temperature for 72 hours and then poured on 30 mL 10% aqueous bicarbonate solution and 30 mL dichloromethane and the layers were separated. The aqueous layer was extracted a second time with 30 mL dichloromethane. The organic layers were washed with 30 mL brine, dried over magnesium sulfate, filtered and concentrated under vacuum. The compound was purified by silica gel chromatography on a 20 g column using a MPLC system (CombiFlash Companion, Isco Inc.) eluting with a gradient of n-heptane:ethyl acetate (100:0 to 0:100). Colorless solid (63 mg, 34.3%). MS (ESI+): m/z=518.056 ([M+H]+).

1. customthe layers were separated
2. extractionThe aqueous layer was extracted a second time with 30 mL dichloromethane
3. washThe organic layers were washed with 30 mL brine
4. dry with materialdried over magnesium sulfate
5. filtrationfiltered
6. concentrationconcentrated under vacuum
7. customThe compound was purified by silica gel chromatography on a 20 g column
8. washeluting with a gradient of n-heptane:ethyl acetate (100:0 to 0:100)