Potassium Phosphate, Tribasic → 1-[6-fluoro-2'-(trifluoromethoxy)-1,1'-biphenyl-3-yl]-5-methyl-1H-pyrazole-3-carboxamide

Participants

Reaction Conditions

Reaction Steps

To a solution of the carboxamide (from step 2) (0.063 g, 0.2 mmol) and 2-trifluromethoxyphenyl boronic acid (0.076 g, 0.37 mmol) in dioxane (1 mL) were added NiCl2(dppf)2 (0.002 g, 1 mole %) and potassium phosphate (0.158 g, 0.74 mmol) and the mixture was stirred at 95° C. for 16 hours. After cooling, the reaction was partitioned between EtOAc and water. The organic phase was washed with saturated sodium bicarbonate, brine and then dried over sodium sulfate. The crude product, obtained upon concentration of the organic phase, was purified by reverse phase HPLC (acetonitrile/water system) (gradient: 10% to 90% acetonitrile over 10 minutes) to yield the titled product (0.009 g, 9.5%).

Provenance & Evidence