Methyl Phenylglyoxalate Nrog Cas 15206-55-0

Benzoic acid thiab methanol tau los ntawm esterification. Cyclic methanol thiab benzoylformic acid tau ntxiv rau hauv lub lauj kaub tshuaj, thiab sulfuric acid tau maj mam ntxiv nrog kev sib tov. Tom qab cua sov hauv qab reflux rau 12 teev, cov methanol ntau dhau tau rov qab los. Cov khoom esterified tau neutralized nrog dilute sodium carbonate kua, cov roj txheej tau sib cais, thiab cov dej txheej tau rho tawm nrog benzene. Cov extract tau ua ke nrog cov roj txheej, ziab hla 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 txo qhov siab. Tom qab ntawd cov feem tau sau thiab coj ua methyl benzoylformate.