反应详情

Anhydrous potassium carbonate (14.9 g, 0.12 mol) was added to a mixture of 4-propylphenol (13.6 g, 0.10 mol) and 4-fluorobenzaldehyde (12.4 g, 0.10 mol) in N,N-dimethylacetamide (100 mL) under argon. The heterogeneous mixture was brought to reflux, maintained at that temperature for 5 h, then cooled to RT. Water (100 mL) and CH2Cl2 (100 mL) were added, resulting in a tri-phase system. The bottom layer was removed; the middle layer was dried over MgSO4 ; and, the top layer was extracted with CH2Cl2 (100 mL) and dried over MgSO4. The dried layers were combined and concentrated in vacuo at 50° C. to give an orange oil. The crude product was purified by distillation to give title compound (16.6 g, 69%) as a colorless oil. bp 133°-50° C. (0.2 mm Hg)

1. temperatureto reflux
2. temperaturemaintained at that temperature for 5 h
3. customresulting in a tri-phase system
4. customThe bottom layer was removed
5. dry with materialthe middle layer was dried over MgSO4
6. extractionand, the top layer was extracted with CH2Cl2 (100 mL)
7. dry with materialdried over MgSO4
8. concentrationconcentrated in vacuo at 50° C.
9. customto give an orange oil
10. distillationThe crude product was purified by distillation