Ethyl cyanoacetate(CAS#105-56-6)
| Hazard Symbols | Xi – Hasha |
| Risk Codes | R36/38 - Kushungurudza maziso neganda. |
| Tsanangudzo Yekuchengetedza | S26 – Kana wasangana nemaziso, sukurudza nekukurumidza nemvura yakawanda uye tsvaga mazano ekurapwa. S37/39 - Pfeka magirovhosi akakodzera uye dziviriro yeziso / kumeso |
| UN IDs | UN 2666 |
Ethyl cyanoacetate(CAS#105-56-6) Nhanganyaya
Ethyl cyanoacetate, CAS nhamba 105-56-6, inokosha organic kemikari mbishi zvinhu.
Zvimiro, ine cyano boka (-CN) uye ethyl ester boka (-COOCH₂CH₃) mumorekuru wayo, uye kusanganiswa uku kwezvimiro kunoita kuti ive yakasiyana nemakemikari. Panyaya yezvimiro zvemuviri, kazhinji imvura isina ruvara kuenda kuchiedza yero ine kunhuhwirira kwakakosha, nzvimbo yekunyunguduka ingangoita -22.5 °C, nzvimbo yekuvira iri pakati pe206 - 208 °C, inonyungudika muorganic solvents senge madoro. uye ether, uye kumwe kunyungudika mumvura asi kuri kudiki.
Maererano nemishonga yemakemikari, iyo yakasimba polarity yeboka re cyano uye maitiro esterification eboka re ethyl ester rinotarisa kuti rinogona kuita maitiro akawanda. Semuenzaniso, i classical nucleophile, uye boka recyano rinogona kutora chikamu muMichael kuwedzera reaction, uye conjugation yekuwedzera ne α, β-unsaturated carbonyl compounds inogona kushandiswa kugadzira itsva carbon-carbon bonds, iyo inopa nzira inoshanda ye kuumbwa kwema organic molecules. Mapoka eEthyl ester anogona kuve ne hydrolyzed pasi pe acidic kana alkaline mamiriro kuti aumbe anoenderana carboxylic acids, ayo akakosha mukushandurwa kwemapoka anoshanda mune organic synthesis.
Panyaya yekugadzirira nzira, ethyl chloroacetate uye sodium cyanide inowanzoshandiswa seyakabikwa kugadzirira kuburikidza ne nucleophilic substitution reaction, asi iyi nzira inoda kunyatso kudzora dosage uye maitiro emamiriro eiyo sodium cyanide, nekuda kweiyo yakanyanya toxicity uye kusashanda zvisina kunaka. zviri nyore kukonzeresa tsaona dzekuchengetedza, uye zvakare zvinodiwa kuterera kune yekutevera-yekucheneswa matanho kuti uwane yakakwirira-kuchena zvigadzirwa.
Mukushandiswa kwemaindasitiri, ndicho chinhu chakakosha chepakati mukugadzirwa kwemakemikari akanaka semishonga, mishonga yezvipembenene, uye zvinonhuhwirira. Mumushonga, inoshandiswa kugadzira mishonga inonyaradza-hypnotic yakadai sebarbiturates; Mundima yemishonga yezvipembenene, tora chikamu mukubatanidzwa kwemishonga ine zvipembenene uye mishonga yesora; Mukubatanidza kwezvinonhuhwirira, inogona kuvaka skeleton yemamorekuru ekunhuhwirira uye kupa yakasarudzika zvigadzirwa zvekusanganisa zvakasiyana-siyana zvinonhuhwirira, izvo zvinoita basa rakakosha mukutsigira indasitiri yemazuva ano, zvekurima uye maindasitiri ezvigadzirwa zvevatengi.
Inofanira kusimbiswa kuti nekuda kweboka recyano, Ethyl cyanoacetate ine imwe huturu uye inogumbura paganda, maziso, kufema turakiti, nezvimwewo, saka zvakakosha kupfeka midziyo yekudzivirira munzvimbo ine mhepo yakanaka panguva yekushanda, uye kunyatsotevera mitemo yekuchengetedza yemakemikari marabhoritari uye kugadzirwa kwemakemikari.
