反应详情

温度

-78 °C

To a solution of 4′-methoxyacetophenone (1.0 equiv.) in THF at −78° C. was added dropwise 1.5 equiv. of [(CH3)2Si]2NLi. The solution was stirred for 1 h at −78° C., followed by addition of 1.2 equiv. of p-anisoyl chloride. The reaction mixture was stirred for 10 min at −78° C. and then for 22 h at rt, acidified with 10% citric acid, and extracted with EtOAc. The combined organic layers were washed with water and dried over Na2SO4. Removal of solvent in vacuo provided a crude solid which was purified by flash chromatography (CH2Cl2) to give 1,3-di(4-methoxyphenyl)propane-1,3-dione.

1. stirringThe reaction mixture was stirred for 10 min at −78° C.
2. waitfor 22 h at rt
3. extractionextracted with EtOAc
4. washThe combined organic layers were washed with water
5. dry with materialdried over Na2SO4
6. customRemoval of solvent in vacuo
7. customprovided a crude solid which
8. customwas purified by flash chromatography (CH2Cl2)