Dimethyl carbonate CAS 616-38-6
Dimethyl carbonate (DMC), cov khoom siv tshuaj lom neeg tsis tshua muaj tshuaj lom neeg, kev tiv thaiv ib puag ncig zoo thiab kev siv dav, yog ib qho tseem ceeb nruab nrab rau cov organic synthesis.Nws cov qauv molecular muaj cov pab pawg ua haujlwm xws li carbonyl, methyl thiab methoxy, thiab nws muaj ntau yam reactivity.Nws muaj cov yam ntxwv ntawm kev siv nyab xeeb, yooj yim, muaj kuab paug tsawg thiab kev thauj mus los yooj yim hauv kev tsim khoom.Dimethyl carbonate yog ib qho kev cog lus "ntsuab" cov khoom lag luam vim nws cov tshuaj lom neeg tsawg.
Cov mis mos molecular: C3H6O3;(CH3O) 2CO ;CH3O-COOCH3
Molecular Luj: 90.07
CAS Nr .: 616-38-6
EINECS tus lej: 210-478-4
Kev siv Xwm Cov khoom zoo heev thiab cov qauv molecular tshwj xeeb ntawm DMC txiav txim siab nws daim ntawv thov dav, uas tuaj yeem ua tiav raws li hauv qab no:
Hloov folded phosgene ua carbonylation tus neeg sawv cev.
Txawm hais tias phosgene (Cl-CO-Cl) muaj qhov ua haujlwm siab, nws cov tshuaj lom thiab corrosive los ntawm cov khoom ua rau nws ntsib ib puag ncig zoo, yog li nws yuav maj mam tshem tawm.DMC (CH3O-CO-OCH3) muaj qhov chaw zoo sib xws nucleophilic cov tshuaj tiv thaiv.Thaum cov carbonyl pawg DMC raug tawm tsam los ntawm nucleophiles, acyl-oxygen daim ntawv cog lus tawg los ua carbonyl compounds, thiab cov khoom los ntawm cov khoom yog methanol.Yog li ntawd, DMC tuaj yeem hloov phosgene los ua cov tshuaj tiv thaiv kev nyab xeeb rau kev tsim cov pa roj carbonic acid derivatives, xws li carbamate tshuaj tua kab, polycarbonates, isocyanates, thiab lwm yam, ntawm cov polycarbonate yuav yog thaj chaw uas xav tau ntau tshaj plaws rau DMC.Nws yog kwv yees tias nyob rau hauv 2005.
Hloov folded dimethyl sulfate ua methylating tus neeg sawv cev.
Rau cov laj thawj zoo ib yam li phosgene, dimethyl sulfate (CH3O-SO-OCH3) kuj tseem ntsib lub siab ntawm kev tshem tawm.Thaum cov methyl carbon ntawm DMC raug tawm tsam los ntawm nucleophiles, nws daim ntawv cog lus alkyl-oxygen tawg thiab cov khoom methylated kuj tsim.Ntxiv mus, cov tshuaj tiv thaiv tawm los ntawm DMC yog siab dua thiab cov txheej txheem yooj yim dua li ntawm dimethyl sulfate.Cov kev siv tseem ceeb muaj xws li synthesizing organic intermediates, cov khoom siv tshuaj, tshuaj tua kab, thiab lwm yam.
