Thaum lub cev qhuav dej ntawm cawv rau alkenes los ntawm cua sov nrog cov concentrated H2SO4. Lub cev qhuav dej ntawm cawv rau alkene nyob rau hauv muaj cov concentrated H2SO4 koom nrog -OH pawg hauv cawv uas pub ob lub electrons rau H + los ntawm cov kua qaub reagent, tsim ib qho alkyloxonium ion. … Yog li, cov kauj ruam pib yog protonation of alcohol
Dab tsi yog qhov pib ua haujlwm thaum lub cev qhuav dej ntawm cawv rau alkenes?
theem pib yog protonation ntawm cawv molecules.
Puas alkene tau los ntawm lub cev qhuav dej ntawm cawv?
Lub cev qhuav dej ntawm cov cawv kom tsim cov alkene ua los ntawm ua kom cov cawv muaj cov kua qaub muaj zog, xws li sulfuric lossis phosphoric acid, ntawm qhov kub thiab txias.
Dab tsi yog thawj kauj ruam ntawm lub cev qhuav dej ntawm cawv los tsim cov alkene nrog sulfuric acid?
Ua ntej, cov kua qaub protonates (ntxiv ib qho proton lossis H +) cawv ntawm cov electronegative atom feem ntau, uas yog oxygen txheej txheem no feem ntau thim rov qab. Hauv kauj ruam thib ob, cov cawv protonated poob dej kom muab cov kab mob zoo uas hu ua carbonium ion lossis carbocation.
Yuav ua li cas dej cawv yuav ua rau alkene?
Butan-2-ol yog qhov piv txwv zoo ntawm qhov no, nrog peb qhov sib txawv alkenes tsim thaum nws lub cev qhuav dej. Thaum cov cawv tsis muaj dej, cov pab pawg -OH thiab hydrogen atom los ntawm cov pa roj carbon tom ntej hauv cov saw hlau raug tshem tawm.
