3,4-dihydro-2H-pyran → HCID 10998760, compound

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Reaction Steps

To a solution of 2 drops of 6N hydrochloric acid in 17 g. of dihydropyran is added 14.4 g. of β-naphthol under ice cooling. The resulting solution is stirred at 5° to 10° for 2 hours and then 5 g. of anhydrous sodium carbonate is added. After stirring at room temperature for 15 minutes, the resulting solids are filtered off and the filtrate is concentrated under reduced pressure to yield crude 2-tetrahydropyranyloxynaphthalene, suitable for use in the next step (2).

Provenance & Evidence