反应详情

A mixture of (S)-5-bromo-N-[methyl(oxo)phenyl-λ6-sulfanylidene]nicotinamide (105 mg, 0.31 mmol) and 1-ethynyl-2-fluorobenzene (75 mg, 0.62 mmol) in 2.0 mL EtOAc was degassed with argon at 70° C. Upon cooling to room temperature the reaction mixture was treated with triethylamine (0.16 mL, 1.1 mmol), dichlorobis(triphenylphosphine)palladium(II) (22 mg, 0.031 mmol) and copper(I) iodide (2 mg, 0.012 mmol). The reaction was heated at 70° C. for 20 hours then partitioned between EtOAc and H2O. The EtOAc layer was washed with acetic acid solution, saturated NaHCO3, brine, dried with anhydrous Na2SO4 and concentrated. The dark film obtained was purified by chromatography (silica gel, hexane/EtOAc) to give the title compound as a tan foam (110 mg, 94%).

1. customwas degassed with argon at 70° C
2. temperatureThe reaction was heated at 70° C. for 20 hours
3. customthen partitioned between EtOAc and H2O
4. washThe EtOAc layer was washed with acetic acid solution, saturated NaHCO3, brine
5. dry with materialdried with anhydrous Na2SO4
6. concentrationconcentrated
7. customThe dark film obtained
8. customwas purified by chromatography (silica gel, hexane/EtOAc)