反应详情

Mix 2-[4-(4-chloro-butyryl)-phenyl]-2-methyl-propionic acid (10.0 g, 37.3 mmol) and anhydrous potassium carbonate (3.5 g, 25.3 mmol). Heat to 40° C. in acetonitrile (100 mL) and stir under a nitrogen atmosphere. Add dimethyl sulfate (13.3 g, 105 mmol) and reflux for 45 minutes. Evaporate the solvent in vacuo, dissolve the residue in ethyl acetate (50 mL) and wash with water (4×50 mL). Dry (MgSO4), filter through silica gel and evaporate the solvent in vacuo to give the title compound (6.4 g, 89%).

1. customEvaporate the solvent in vacuo
2. dissolutiondissolve the residue in ethyl acetate (50 mL)
3. washwash with water (4×50 mL)
4. dry with materialDry (MgSO4)
5. filtrationfilter through silica gel
6. customevaporate the solvent in vacuo