2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Kev txo qis ntawm nitrobenzene los ntawm qhov twg hauv qab no reagent muab aniline? C6H5NO2Zn/NH4OH →C6H5NHOH thaum tag nrho lwm cov reagents muab aniline.
Qhov twg hauv qab no yog txo cov khoom ntawm nitrobenzene?
Teb tiav: Thaum cov tshuaj nitro txo qis, ces amines yog tsim. Qhov loj ntawm nitrobenzene txo qis siv zinc, thiab sodium hydroxide. Qhov txo qis ntawm NO2 yog qhov uas nws hloov mus rau amines, cov amines txuas nrog lawv tus kheej thiab tom qab ntawd benzene rings txuas.
Nitrobenzene txo qis rau aniline muab piv txwv li cas?
Nitrobenzene txo rau aniline los ntawm Sn thiab concentrated HCl. Hloov ntawm Sn, Zn lossis Fe kuj tuaj yeem siv tau. Aniline ntsev yog muab los ntawm cov tshuaj tiv thaiv no. Tom qab ntawd aqueous NaOH ntxiv rau aniline ntsev kom tau tso tawm aniline.
Yuav ua li cas aniline tau los ntawm nitrobenzene?
Aniline yog npaj ua lag luam los ntawm cov catalytic hydrogenation ntawm nitrobenzene lossis los ntawm kev ua ntawm ammonia ntawm chlorobenzene. Kev txo qis ntawm nitrobenzene kuj tseem tuaj yeem ua nrog hlau borings hauv aqueous acid. Ib qho tseem ceeb muaj ntxhiab amine, aniline yog lub hauv paus tsis muaj zog thiab tsim cov ntsev nrog cov ntxhia acids.
Vim li cas aniline yog ortho thiab para directing?
NH2 pawg hauv aniline yog ortho thiab para directing pab pawg vim lawv tuaj yeem muaj hluav taws xob tiag tiag ntawm lub nplhaib vimresonance thiab nyob rau tib lub sij hawm lawv thim cov electrons towads lawv tus kheej los ntawm aromatic nplhaib vim +1 nyhuv. Lub resonating qauv ntawm anilineshows tsis zoo nqi tsim nyob rau hauv ortho thiab para txoj hauj lwm.
