Xov xwm kev lag luam

Methyl p-toluenesulfonate chemical khoom

2022-06-22
Methyl 4-toluenesulfonate, tseem hu ua methyl p-toluenesulfonate (methylp-toluenesulfonate), yog ib qho tseem ceeb organic chemical intermediate, feem ntau yog siv rau hauv kev tsim cov dyes thiab organic synthesis, raws li ib tug tshuaj npaj ntawm methylation raw cov ntaub ntawv. Methyl 4-toluenesulfonic acid kuj tseem siv tau los ua ib qho kev xaiv methylation reagent rau cov organic synthesis, siv nyob rau hauv kev tsim cov dyes thiab organic synthesis, siv rau kev npaj ntawm methylation raw khoom, xaiv methylation reagent thiab catalyst rau organic synthesis.


Dawb siv lead ua. Melting point 28-29â¢, boiling point 292â¢, 146-147â¢, (1.2kPa), txheeb ze density 1.231 (20/4â¹۔). Soluble hauv ethanol, ether, benzene, insoluble hauv dej. Hygroscopic.


Los ntawm cov tshuaj tiv thaiv ntawm p-toluene sulfonyl chloride nrog methanol. Sib tov p-toluene sulfonyl chloride thiab methanol, maj mam ntxiv 25% sodium hydroxide tov, qhov kub thiab txias tswj tau qis dua 25â ¢, mus rau pH 9, tsis txhob ntxiv alkali, Cov Ntawv Qhia Tshuaj txuas ntxiv do 2h, tawm hauv hmo ntuj. Cov txheej txheem qis dua tau muab tshem tawm, txheej txheej sab saud tau muab tshem tawm nrog benzene, thiab cov tshuaj tshem tawm tau ua ke nrog cov txheej txheem qis tom qab rov ua dua benzene, ntxuav nrog dej thiab 5% potassium carbonate tov, thiab cov khoom tiav tau txais los ntawm lub tshuab nqus tsev distillation. tom qab ziab.


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