反应详情

Anhydrous zinc(II) chloride (2.73 g, 20.00 mmol) was stirred in dry benzene (15 ml) while diethylamine (1.558 ml, 15.00 mmol) and t-butanol (1.435 ml, 15.00 mmol) were added, and the resulting mixture was stirred at room temperature for 90 min to give a cloudy solution. To this mixture was added 2-bromo-1-(4-nitrophenyl)ethanone (2.44 g, 10.00 mmol) and 1-(4-nitrophenyl)ethanone (2.477 g, 15.00 mmol), and the resulting mixture was stirred at room temperature overnight. The mixture was poured into water (50 mL) and extracted with ethyl acetate (3×50 ml). The combined organic layers were dried over Na2SO4, filtered and concentrated. The resulting residue was triturated with dichloromethane to give an orange solid that was collected by filtration and dried to give the title compound (2.0 gm, 61% yield).

1. additionwere added
2. customto give a cloudy solution
3. stirringthe resulting mixture was stirred at room temperature overnight
4. extractionextracted with ethyl acetate (3×50 ml)
5. dry with materialThe combined organic layers were dried over Na2SO4
6. filtrationfiltered
7. concentrationconcentrated
8. customThe resulting residue was triturated with dichloromethane
9. customto give an orange solid
10. filtrationthat was collected by filtration
11. customdried