Potassium Carbonate → 4-(1-Ethyl-3-(4-nitrophenyl)-1H-pyrazol-4-yl)-1H-pyrrolo[2,3-b]pyridine

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Reaction Steps

A solution of 1-ethyl-3-(4-nitrophenyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (7.5 mmol), 4-bromo-1H-pyrrolo[2,3-b]pyridine (Ref. Org. Lett. 5(26), 5023-5024, 2003) (6.3 mmol), and tetrakis(triphenylphosphine)palladium(0) (0.25 mmol) in a 1:1 solution of 1,4-dioxane (12 mL):2M potassium carbonate (12 mL) was stirred for 18 h at 100° C. in a sealed tube. Upon cooling to room temperature, product precipitated out of solution which was filtered and dried to provide the title product as a light yellow powder (80%). ESMS [M+H]+: 334.2

Provenance & Evidence