Water → HCID 86668198, compound

Participants

Reaction Conditions

Reaction Steps

A solution of the crude product containing 2-methoxy-5-(4-methyltetrahydro-2H-pyran-4-yl)benzaldehyde (0.719 g) in ethyl acetate (10.0 mL) was cooled to −40° C., and nitronium tetrafluoroborate (0.597 g, 4.49 mmol) was added thereto. The resulting mixture was stirred for 2 hours while raising the temperature to −10° C. Water was added to the reaction solution and the resulting solution was diluted with ethyl acetate. The organic layer was washed with water, saturated aqueous sodium hydrogen carbonate solution and saturated brine, dried over anhydrous sodium sulfate and filtered. The solvent was then evaporated under reduced pressure, and the obtained residue was purified by column chromatography (silica gel, hexane/ethyl acetate=90/10-30/70) to obtain 0.644 g of the captioned compound (92% yield in 2 steps).

Provenance & Evidence