反应详情

温度

50 °C

Then, 1.0 g of 2'-hydroxy-4,4'-bis(methoxymethoxy)chalcone was dissolved in 7 ml of tetrahydrofuran, and a 5-15% hydrochloric acid/methanol reagent was added to the solution and the mixture was heated at 50° C. for 30 minutes to effect a reaction. After the reaction, the reaction mixture was neutralized with a saturated aqueous solution of sodium hydrogencarbonate and extracted with 300 ml of ethyl acetate, and the ethyl acetate layer was washed with water (100 ml×3 times), shaken with a saturated aqueous solution of sodium chloride (50 ml×2 times), dried with anhydrous sodium sulfate and filtered. The solvent was removed from the filtrate by distillation, and the obtained residue was subjected to the silica gel column chromatography using a mixed solvent of n-hexane and ethyl acetate to obtain 521 mg (yield=70%) of 2',4,4'-trihydroxychalcone in the form of a yellow grain.

1. customa reaction
2. customAfter the reaction
3. extractionextracted with 300 ml of ethyl acetate
4. washthe ethyl acetate layer was washed with water (100 ml×3 times)
5. dry with materialdried with anhydrous sodium sulfate
6. filtrationfiltered
7. customThe solvent was removed from the filtrate by distillation