Potassium Phosphate, Tribasic → N-(5-(2,2-difluoro-6-methylbenzo[d][1,3]dioxol-5-yl)pyrazin-2-yl)-2,6-difluorobenzamide

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Reaction Conditions

Reaction Steps

Palladium tetrakis-triphenylphosphine (23 mg, 20 μmol) was added to a degassed solution of bromide 17 (129 mg, 0.4 mmol) and boronate 14 (117 mg, 0.4 mmol) in dioxane:acetonitrile:water (9:9:2, 2.0 mL) and potassium phosphate (125 mg, 0.6 mmol). The resulting mixture was heated under argon at 80° C. with stiffing for 1.5 hours. The mixture was then cooled, extracted with dichloromethane (3×7 mL), dried with sodium sulfate and concentrated under reduced pressure. Flash chromatography (ISCO system, silica, 0-30% ethyl acetate in hexane) provided 10 (124 g, 78%) as a crystalline solid: LRESIMS 406.1 [M+H]+, calcd. for C19H12F4N3O3 406.1.

Provenance & Evidence