反应详情

0.67 g of the above 2-methylbutanoic acid-4-(2-methylbutanoyl) biphenyl was mixed with 95 ml of methyl alcohol and 5 ml of water and added with 1.14 g (13.6 mmol) of sodium hydrogen carbonate with stirring, which was subjected to hydrolysis reaction at room temperature for 40 hours. After the completion of the reaction, methanol was distilled off and 1 normal hydrochloric acid was added to adjust pH to not more than 1, and the extraction with dichloromethane was performed. The extracted liquid was washed with water, dried on anhydrous sodium sulfate and purified by a column chromatography of silica gel after the removal of the solvent to obtain 0.44 g (yield 88%) of (+)-4-hydroxy-4'-(2-methylbutanoyl) biphenyl at a light yellow crystal having the aforementioned properties.

1. customwhich was subjected to hydrolysis reaction at room temperature for 40 hours
2. distillationwas distilled off
3. addition1 normal hydrochloric acid was added
4. extractionthe extraction with dichloromethane
5. washThe extracted liquid was washed with water
6. dry with materialdried on anhydrous sodium sulfate
7. custompurified by a column chromatography of silica gel
8. customafter the removal of the solvent