反应详情

温度

-70 °C

12.0 ml (30 mmol, 1.5 eq) of a 2.5 M solution of n-butyllithium in hexane were added dropwise to a solution of 2.46 g (30 mmol, 1.5 eq) of 2-methylfuran in 50 ml of tetrahydrofuran cooled to −70° C. The reaction medium was stirred and allowed to return to ambient temperature for 2 hours. The reaction medium was cooled to −70° C. and then 2.28 g (20 mmol, 1 eq) of tetrahydro-2H-pyran-4-carbaldehyde were added. The reaction medium was stirred at ambient temperature for 2 hours. The reaction medium was treated with a saturated ammonium chloride solution and extracted with ethyl acetate. The organic phases were combined, washed with a saturated sodium chloride solution and evaporated. 4.43 g of (5-methylfuran-2-yl)-(tetrahydropyran-4-yl)methanol were obtained. Yield=100%.

1. temperatureThe reaction medium was cooled to −70° C.
2. stirringThe reaction medium was stirred at ambient temperature for 2 hours
3. extractionextracted with ethyl acetate
4. washwashed with a saturated sodium chloride solution
5. customevaporated