Dimethyl carbonate CAS: 616-38-6
Dimethyl carbonate (DMC), kemikari raw material ine yakaderera muchetura, yakanakisa kuchengetedza kwezvakatipoteredza kuita uye yakafara application, yakakosha yepakati kune organic synthesis.Yayo molecular chimiro ine anoshanda mapoka akadai secarbonyl, methyl uye methoxy, uye ine akasiyana reactivity.Iyo ine hunhu hwekushandisa zvakachengeteka, nyore, kushomeka kusvibiswa uye nyore kufambisa mukugadzira.Dimethyl carbonate inovimbisa "girinhi" kemikari chigadzirwa nekuda kwekuderera kwayo muchetura.
Molecular formula: C3H6O3;(CH3O)2CO ;CH3O-COOCH3
Molecular uremu: 90.07
CASN.: 616-38-6
EINECS nhamba: 210-478-4
Mashandisirwo echisikigo Izvo zvakanakisa zvivakwa uye yakakosha mamorekuru chimiro cheDMC chinotarisa kushanda kwayo kwakakura, kunogona kupfupikiswa sezvizvi:
Tsiva yakapetwa phosgene secarbonylation agent.
Kunyangwe phosgene (Cl-CO-Cl) iine high reactivity, yayo ine muchetura uye corrosive by-products inoita kuti isangane nekumanikidzwa kukuru kwezvakatipoteredza, saka inozobviswa zvishoma nezvishoma.DMC(CH3O-CO-OCH3) ine yakafanana nucleophilic reaction centre.Kana boka recarbonyl reDMC rikarwiswa nemanucleophiles, acyl-oxygen bond inoputika kuita carbonyl compounds, uye by-product methanol.Naizvozvo, DMC inogona kutsiva phosgene seyakachengeteka reaction reagent yekugadzira carbonic acid derivatives, senge carbamate mishonga yezvipembenene, polycarbonates, isocyanates, nezvimwewo, pakati peiyo polycarbonate ichave munda ine yakanyanya kudiwa yeDMC.Zvinofungidzirwa kuti muna 2005.
Tsiva yakapetwa dimethyl sulfate semethylating agent.
Nezvikonzero zvakafanana nephosgene, dimethyl sulfate (CH3O-SO-OCH3) iri kutarisanawo nekumanikidzwa kwekubvisa.Kana iyo methyl kabhoni yeDMC inorwiswa nemanucleophiles, iyo alkyl-oxygen bond inoputswa uye zvigadzirwa zvemethylated zvinogadzirwawo.Uyezve, maitiro ekuita goho reDMC akakwira uye maitiro acho ari nyore kupfuura ayo edimethyl sulfate.Iko kushandiswa kukuru kunosanganisira kubatanidza organic intermediates, zvigadzirwa zvemishonga, mishonga yezvipembenene, nezvimwe.
