Potassium Carbonate → (S)-tert-Butyl 5-chloro-4-((5-chloro-6-((1,1,1-trifluoropropan-2-yl)oxy)pyridin-3-yl)oxy)-2-fluorobenzoate

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Reaction Steps

tert-Butyl 5-chloro-2,4-difluorobenzoate (Preparation 59, 8.3 g, 33.4 mmol) was added to a solution of 5-chloro-6-[(1S)-2,2,2-trifluoro-1-methylethoxy]pyridin-3-ol (Preparation 231, 16.2 g, 66.8 mmol) and potassium carbonate (27.8 g, 200 mmol) in dimethyl sulfoxide (100 mL). The reaction mixture was stirred at room temperature for 18 hours then quenched with an aqueous solution of sodium hydroxide (1 M, 100 mL). A white precipitate formed and was collected by filtration to give the title compound as a white solid (9.2 g).

Provenance & Evidence