1-Propanol → 2-(3-Propoxypyridin-4-yl)-5-(trifluoromethyl)benzoxazole

Participants

Reaction Steps

A mixture of 0.28 g of 2-(3-fluoropyridin-4-yl)-5-(trifluoromethyl)benzoxazole, 0.27 g of potassium carbonate, and 3 ml of propanol was heated to reflux while stirring for six hours. The reaction mixture was cooled to room temperature, and then concentrated under reduced pressure. Water was added the reaction mixture, followed by extraction with ethyl acetate twice. The combined organic layers were washed with a saturated sodium chloride solution, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was subjected to silica gel column chromatography to give 0.25 g of 2-(3-propoxypyridin-4-yl)-5-(trifluoromethyl)benzoxazole (hereinafter, referred to as “active compound 71”).

Provenance & Evidence