反应详情

温度

90 °C

4-Isobutyl-benzene-1,3-diol (1 eq) was taken up in BF3.OEt2 (6 eq) and acetic acid (2 eq) was added. The solution was heated for 16 hours at 90° C. than allowed to cool to room temperature. The solution was added drop wise to 10% NaOAc (aq) and allowed to stand for 4 hours, before being extracted twice with diethyl ether. The organic phases were combined and washed with sat. NaHCO3 (aq), then dried over magnesium sulfate, filtered and concentrated in vacuo to give 1-(2,4-dihydroxy-5-isobutyl-phenyl)-ethanone, which was used without additional purification.

1. temperatureto cool to room temperature
2. extractionbefore being extracted twice with diethyl ether
3. washwashed with sat. NaHCO3 (aq)
4. dry with materialdried over magnesium sulfate
5. filtrationfiltered
6. concentrationconcentrated in vacuo