Sodium Hydroxide → HCID 63936931, compound

Participants

Reaction Steps

Piperidin-4-ol (7.8 g) and dihydro-2H-pyran-4(3H)-one (5.0 g) were dissolved in titanium(IV) isopropoxide (30 mL) and the reaction was stirred at room temperature overnight. Next day methanol (40 mL) was added and the reaction was cooled to 00. Then NaBH4 (3.8 g) was added in portions over one hour. After two hours 1N aqueous NaOH was added, followed by ethyl acetate addition. After filtration through celite the layers were separated, the aqueous layer extracted with ethyl acetate, and the combined organic layers were dried over Na2SO4. The crude material was purified by column chromatography using CH2Cl2 having 5-10% 7N NH3 in methanol.

Provenance & Evidence