Propargyl bromide → Methyl 3,5-difluoro-4-(2-propynyloxy)benzoate

Participants

Reaction Steps

To 80 ml of acetonitrile were added 4.5 g of methyl 3,5-difluoro-4-hydroxybenzoate, 3.5 g of propargyl bromide and 9.4 g of cesium carbonate, and the mixture obtained was heated under reflux for 2 hours. The reaction mixture was filtered through Celite. The filtrate was concentrated under reduced pressure. The residue was subjected to silica gel column chromatography to obtain 5.5 g of methyl 3,5-difluoro-4-(2-propynyloxy)benzoate represented by the formula:

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