反应详情

4-Bromo-3-methoxy-benzoic acid (1.50 g, 6.49 mmol), K2CO3 (2.69 g, 19.5 mmol), and DMF (10 mL) were combined and the mixture was allowed to stir for 10 minutes. Bromomethylbenzene (849 gL, 7.14 mmol) was added dropwise and the mixture was allowed to stir at room temperature for 1 h. The reaction mixture was quenched with brine and was extracted with EtOAc (3×). The organic layers were dried over sodium sulfate, filter and concentrated. The residue was purified using silica gel chromatography (5%-70% EtOAc in hexanes) to provide benzyl 4-bromo-3-methoxybenzoate (91%). ESI-MS m/z calc 320.0, found 321.0/323.0 (M+I)+. Retention time: 3.24 minutes (4 min run).

1. stirringto stir at room temperature for 1 h
2. customThe reaction mixture was quenched with brine
3. extractionwas extracted with EtOAc (3×)
4. dry with materialThe organic layers were dried over sodium sulfate
5. filtrationfilter
6. concentrationconcentrated
7. customThe residue was purified