Ethyl cyanoacetate(CAS#105-56-6)
| Nā hōʻailona pōʻino | Xi – Hoʻohaunaele |
| Nā Code Risk | R36/38 – Hoʻonanea i ka maka a me ka ʻili. |
| Ka wehewehe palekana | S26 – Inā pili me nā maka, e holoi koke me ka wai nui a e ʻimi i ka ʻōlelo aʻo kino. S37/39 – E hoʻohana i nā mīkina lima kūpono a me ka pale maka/maka |
| UN ID | UN 2666 |
Ethyl cyanoacetate(CAS#105-56-6) Hoʻomaka
ʻO ka Ethyl cyanoacetate, ka helu CAS 105-56-6, he mea koʻikoʻi koʻikoʻi.
Ma ke ʻano, he pūʻulu cyano (-CN) a me kahi pūʻulu ethyl ester (-COOCH₂CH₃) i loko o kāna mole, a ʻo kēia hui ʻana o nā hale e hoʻokaʻawale i nā kemika. Ma ke ʻano o nā waiwai kino, ʻo ia ka mea maʻamau i ka wai melemele māmā me kahi ʻala kūikawā, kahi heheʻe ma kahi o -22.5 °C, kahi paila i loko o ka laulā o 206 - 208 °C, hiki ke hoʻoheheʻe ʻia i nā mea hoʻoheheʻe organik e like me nā waiʻona. a me nā etera, a me kekahi mea hiki ke hoʻoheheʻe ʻia i ka wai akā liʻiliʻi.
Ma nā ʻōlelo o nā waiwai kemika, ʻo ka polarity ikaika o ka hui cyano a me nā ʻano esterification o ka hui ethyl ester e hoʻoholo ai e hiki ke hana i nā hopena he nui. No ka laʻana, he nucleophile maʻamau, a hiki i ka hui cyano ke komo i ka hoʻohui Michael hoʻohui, a hiki ke hoʻohana ʻia ka hoʻohui conjugation me α,β-unsaturated carbonyl pūhui no ke kūkulu ʻana i nā paʻa kalapona-carbon hou, kahi ala kūpono no ka hoʻohuihui ʻana o nā molekala organik paʻakikī. Hiki ke hoʻoheheʻe ʻia nā pūʻulu Ethyl ester ma lalo o nā kūlana acidic a i ʻole alkaline e hana i nā ʻakika carboxylic kūpono, ʻo ia ke kī i ka hoʻololi ʻana o nā pūʻulu hana i ka synthesis organik.
Ma ke ʻano o ka hoʻomākaukau ʻana, hoʻohana pinepine ʻia ka ethyl chloroacetate a me ka sodium cyanide e like me nā mea maka e hoʻomākaukau ai ma o ka nucleophilic substitution reaction, akā pono kēia kaʻina hana e hoʻomalu pono i ke ʻano a me ke ʻano o ka hopena o ka sodium cyanide, no ka nui o kona ʻona a me ka hana kūpono ʻole. he mea maʻalahi ke hana i nā pōʻino palekana, a he mea pono nō hoʻi e hoʻolohe i nā ʻanuʻu hoʻomaʻemaʻe e loaʻa ai nā huahana maʻemaʻe kiʻekiʻe.
I nā noi ʻoihana, he mea koʻikoʻi ia i ka synthesis o nā kemika maikaʻi e like me nā lāʻau lapaʻau, pesticides, a me nā mea ʻala. I loko o ka lāʻau lapaʻau, hoʻohana ʻia e hana i nā lāʻau sedative-hypnotic e like me barbiturates; Ma ke kahua o nā pesticides, komo i ka synthesis o nā pūhui me nā hana insecticidal a me herbicidal; I ka hoʻohui ʻana o nā mea ʻala, hiki iā ia ke kūkulu i ka iwi o nā molekala ʻono kūikawā a hāʻawi i nā mea maka kūikawā no ka hui ʻana o nā ʻano ʻono like ʻole, kahi mea nui i ke kākoʻo ʻana i ka ʻoihana hou, ka mahiʻai a me nā ʻoihana mea kūʻai aku.
Pono e hoʻokūpaʻaʻia ma muli o ka hui cyano, Ethyl cyanoacetate kekahi meaʻawaʻawa a me ka hopena hoʻonāukiuki i kaʻili, nā maka, ka'ōpū hanu, a me nā mea'ē aʻe, no laila, pono e komo i nā mea pale i loko o kahi hoʻolālā maikaʻi i ka wā o ka hana, a e hahai pono i nā lula palekana o nā hale hana kemika a me ka hana kemika.
