Methyl Phenylglyoxalate Nrog Cas 15206-55-0

Benzoic acid thiab methanol tau txais los ntawm esterification. Cyclic methanol thiab benzoylformic acid tau ntxiv rau cov tshuaj tiv thaiv lub lauj kaub, thiab sulfuric acid maj mam ntxiv nrog nplawm. Tom qab cua sov nyob rau hauv reflux rau 12 h, tshaj methanol tau zoo lawm. Cov khoom esterified tau neutralized nrog dilute sodium carbonate tov, cov roj txheej tau sib cais, thiab cov txheej aqueous tau muab rho tawm nrog benzene. Cov extract tau ua ke nrog cov roj txheej, qhuav dhau anhydrous sodium sulfate, thiab tom qab ntawd distilled. Ua ntej, cov kuab tshuaj benzene tau rov qab los, thiab tom qab ntawd cov boilers qis tau evaporated nyob rau hauv lub siab txo. Tom qab ntawd cov seem tau sau thiab coj los ua methyl benzoylformate.