反应详情

2-Acetylfuran (20 mmol) and morpholine (20 mmol) were added to neat titanium isopropoxide (32 mmol) and the reaction stirred under N2 at room temperature for 3 h. Methanol (90 ml) was then added followed by the careful portionwise addition of NaBH4 (32 mmol). After stirring at room temperature for 10 mins, the reaction was quenched by addition of 0.1M NaOH and the resultant mixture filtered through a celite pad. The filtrate was extracted twice with DCM, dried over Na2SO4 and concentrated in-vacuo. Flash chromatography of the residue (silica, 5 to 20% EtOAc in Heptane) yielded pure 4-(1-furan-2-yl-ethyl)-morpholine as a golden oil: m/z in MS ES+=182 [M+H]+, 2.76 mmol, 14% yield.

1. stirringAfter stirring at room temperature for 10 mins
2. customthe reaction was quenched by addition of 0.1M NaOH
3. filtrationthe resultant mixture filtered through a celite pad
4. extractionThe filtrate was extracted twice with DCM
5. dry with materialdried over Na2SO4
6. concentrationconcentrated in-vacuo