Ethyl cyanoacetate(CAS#105-56-6)
| Matšoao a Kotsi | Xi - Ea halefisang |
| Likhoutu tsa Kotsi | R36/38 – Ho hlohlona mahlong le letlalong. |
| Tlhaloso ea Tšireletseho | S26 - Ha u kopana le mahlo, hlatsoa hang-hang ka metsi a mangata 'me u batle keletso ea bongaka. S37/39 - Apara liatlana tse loketseng le tšireletso ea mahlo / sefahleho |
| Li-ID tsa UN | UN 2666 |
Ethyl cyanoacetate(CAS#105-56-6) Selelekela
Ethyl cyanoacetate, nomoro ea CAS 105-56-6, ke lisebelisoa tsa bohlokoa tsa lik'hemik'hale tsa lik'hemik'hale.
Ka mokhoa o hlophisitsoeng, e na le sehlopha sa cyano (-CN) le sehlopha sa ethyl ester (-COOCH₂CH₃) ka molek'hule ea eona, 'me motsoako ona oa mehaho o etsa hore e fapane le lik'hemik'hale. Mabapi le litšobotsi tsa 'mele, hangata ke mokelikeli o mosehla o se nang 'mala ho isa ho o khanyang o monko o khethehileng, sebaka se qhibilihang se ka bang -22.5 °C, sebaka se belang se pakeng tsa 206 - 208 °C, se qhibilihang ka har'a lihlapolli tsa tlhaho tse kang joala. le li-ether, le ho qhibiliha ho itseng metsing empa ho batla ho le nyane.
Mabapi le thepa ea lik'hemik'hale, polarity e matla ea sehlopha sa cyano le litšoaneleho tsa esterification tsa sehlopha sa ethyl ester li etsa qeto ea hore e ka ba le mekhoa e mengata. Ka mohlala, ke nucleophile ea khale, 'me sehlopha sa cyano se ka kenya letsoho karabelong ea Michael,' me tlatsetso ea conjugation e nang le α,β-unsaturated carbonyl metsoako e ka sebelisoa ho haha litlamo tse ncha tsa carbon-carbon, tse fanang ka tsela e atlehang ea tlhaho ea limolek'hule tse rarahaneng tsa lintho tse phelang. Lihlopha tsa Ethyl ester li ka etsoa ka hydrolyzed tlas'a maemo a acidic kapa alkaline ho etsa li-carboxylic acid tse tsamaellanang, tse bohlokoa phetohong ea lihlopha tse sebetsang ho organic synthesis.
Mabapi le mokhoa oa ho itokisa, ethyl chloroacetate le sodium cyanide hangata li sebelisoa e le lisebelisoa tse tala ho lokisoa ka nucleophilic substitution reaction, empa ts'ebetso ena e hloka ho laola ka thata litekanyetso le maemo a karabelo ea sodium cyanide, ka lebaka la chefo e phahameng le ts'ebetso e sa lokelang. ho bonolo ho baka likotsi tsa ts'ireletso, hape hoa hlokahala ho ela hloko mehato ea ho hloekisa ho latela ho fumana lihlahisoa tse hloekileng.
Litšebelisong tsa indasteri, ke karolo ea mantlha ea ho kopanya lik'hemik'hale tse ntle joalo ka meriana, chefo e bolaeang likokoanyana le litlolo tse nkhang hamonate. Litlhare, e sebelisoa ho etsa litlhare tse pholisang tse kang li-barbiturates; Lefapheng la chefo e bolaeang likokoanyana, kenya letsoho ho kopanngoeng ha metsoako e nang le mesebetsi e bolaeang likokoanyana le ea herbicide; Ha ho etsoa litlolo tse nkhang hamonate, e ka haha masapo a limolek'hule tsa tatso e khethehileng 'me ea fana ka lisebelisoa tse ikhethang bakeng sa ho kopanya litatso tse fapaneng, tse bapalang karolo ea bohlokoa ho ts'ehetsa indasteri ea sejoale-joale, temo le liindasteri tsa thepa ea bareki.
E lokela ho hatisoa hore ka lebaka la sehlopha sa cyano, Ethyl cyanoacetate e na le chefo e itseng le phello e halefisang letlalong, mahlo, pampiri ea ho hema, joalo-joalo, kahoo hoa hlokahala ho apara lisebelisoa tse sireletsang sebakeng se nang le moea o motle nakong ea ts'ebetso, le latela ka tieo melao ea polokeho ea lilaboratori tsa lik'hemik'hale le tlhahiso ea lik'hemik'hale.
