Triethylamine → 4-Cyano-2-methoxyphenyl trifluoromethanesulfonate

Participants

Reaction Conditions

Reaction Steps

A mixture of 5-cyano-2-hydroxyanisole (600 mg, mmol) and triethylamine (1.40 mL, 10.0 mmol) was dissolved in anhydrous tetrahydrofuran (20 mL) under argon atomosphere. Trifluoromethanesulfonyl chloride (642 μL, 6.03 mmol) were added thereto at −10° C., and stirred at the same temperature for 1 hour. Ethyl acetate (100 mL) and water (100 mL) were added to the reaction mixture and partitioned. The organic layer was washed with saturated brine (50 mL), dried over anhydrous magnesium sulfate, and then the solvent was removed under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane-ethyl acetate) to give the titled reference compound (979 mg) as a colorless solid. (Yield 87%)

Provenance & Evidence