反应详情

A solution of 14.8 g 1-bromo-4-chloro-3-(4-methoxy-benzyl)-benzene in 150 mL dichloromethane is cooled in an ice bath. 50 mL of a 1 M solution of boron tribromide in dichloromethane are added and the resulting solution is stirred for 2 h at ambient temperature. The solution is then cooled in an ice bath again and saturated aqueous potassium carbonate solution is added dropwise. At ambient temperature the mixture is adjusted with aqueous 1 M hydrochloric acid to pH 1, the organic phase is separated off and the aqueous phase is extracted three times with ethyl acetate. The combined organic phases are dried over sodium sulfate and the solvent is removed completely.

1. temperatureThe solution is then cooled in an ice bath again
2. customAt ambient temperature
3. customthe organic phase is separated off
4. extractionthe aqueous phase is extracted three times with ethyl acetate
5. dry with materialThe combined organic phases are dried over sodium sulfate
6. customthe solvent is removed completely