Potassium Carbonate → 3-Bromo-4-[(5-chloro-6-isopropoxypyridin-3-yl)oxy]benzonitrile

Participants

Reaction Conditions

Reaction Steps

To a solution of 5-chloro-6-isopropoxypyridin-3-ol (Preparation 35, 350 mg, 1.87 mmol) in dimethyl sulfoxide (2 mL) was added 3-bromo-4-fluorobenzonitrile (333 mg, 1.87 mmol) and potassium carbonate (386 mg, 2.80 mmol). The reaction was stirred at 50° C. for 4 hours and then partitioned between water (100 mL) and EtOAc. The aqueous phase was separated and extracted with EtOAc (2×25 mL). The combined organic extracts were dried over anhydrous sodium sulfate, filtered and concentrated in vacuo to afford the title compound as a colourless oil which crystallised on standing (920 mg) and which was used without further purification in the next step.

Provenance & Evidence