Qhov sib txawv tseem ceeb ntawm alkoxymercuration thiab oxymercuration yog alkoxymercuration tsim ib qho ether los ntawm alkene thiab cawv, whereas Oxymercuration forms neutral cawv los ntawm alkene.
Alkoxymercuration lossis alkoxymercuration-demercuration yog cov tshuaj tiv thaiv uas tuaj yeem siv los tsim cov ether los ntawm alkene. Oxymercuration, ntawm qhov tod tes, yog tshuaj lom neeg cov tshuaj tiv thaiv qhov twg electrophilic ntxiv mechanism tshwm sim, hloov cov alkene rau hauv nruab nrab cawv.
Alkoxymercuration yog dab tsi?
Alkoxymercuration lossis alkoxymercuration-demercuration yog cov tshuaj tiv thaiv uas tuaj yeem siv los tsim cov ether los ntawm alkene. Hauv lwm lo lus, nws yog cov tshuaj tiv thaiv uas alkene reacts nrog cawv (nyob rau hauv muaj mercuric acetate). Qhov no pib ua rau peb ib qho alkoxymercury intermediate, uas tom qab ntawd tsim ib qho ether ua raws li kev txo qis nrog sodium borohydride.
Nyob rau hauv cov tshuaj tiv thaiv no, ua ntej, ib qho organic compound uas muaj alkene reacts nrog cawv thiab mercuric acetate. Peb feem ntau siv mercury-muaj reagent hauv qhov tshuaj tiv thaiv no. Tom qab ntawd, qhov nruab nrab uas tsim tawm thaum lub sij hawm cov tshuaj tiv thaiv ntxiv reacts nrog ib tug txo tus neeg sawv cev hu ua sodium borohydride. Thaum kawg, qhov kev sib xyaw ua ke no muab ether ua cov khoom organic kawg. Peb tuaj yeem hu ua ethers raws li cov organic derivatives ntawm dej uas ob qho tib si hydrogen atoms hloov los ntawm ob pawg carbon-based xws li diethyl ether.
Ib qho tshuaj tiv thaiv alkoxymercuration-demercuration yog cov tshuaj tiv thaiv ntawm cyclohexene thiab ethanol thiab mercuric acetate. Lub cyclohexene molecule muaj carbon-carbon ob daim ntawv cog lus uas yuav tsum tau rau cov tshuaj tiv thaiv no. Txij li thaum peb siv ethanol ua cawv, cov khoom kawg yuav tshwm sim ua ke ntawm ethanol moiety (tsis muaj proton) thiab cyclohexene molecule. Yog li ntawd, peb tau txais daim ntawv cog lus tshiab carbon-hydrogen uas tsis yog carbon-i=oxygen daim ntawv cog lus ntawm ether molecule.
Oxymercuration yog dab tsi?
Oxymercuration yog tshuaj lom neeg cov tshuaj tiv thaiv nyob rau hauv uas ib qho electrophilic ntxiv mechanism tshwm sim, hloov cov alkene rau hauv nruab nrab cawv. Hauv cov txheej txheem no, peb tuaj yeem soj ntsuam cov tshuaj tiv thaiv ntawm alkene thiab mercuric acetate hauv cov tshuaj aqueous. Qhov no ua rau muaj qhov sib ntxiv ntawm pawg acetoxymercury thiab pab pawg OH hla ob daim ntawv cog lus.
Daim duab 01: Cov tshuaj tiv thaiv tshuaj muaj xws li Oxymercuration
Thaum lub sijhawm txheej txheem Oxymercuration, carbocations tsis tsim. Yog li ntawd, muaj cov kauj ruam rov kho dua thiab. Cov tshuaj tiv thaiv no tshwm sim raws li Markonikov txoj cai. Ntxiv mus, nws yog ib qho tshuaj tiv thaiv ntxiv. Qhov no txhais tau hais tias pawg OH yuav ib txwm tau ntxiv rau cov pa roj carbon atom uas hloov pauv ntau dua thiab ob pawg yuav hloov mus rau ib leeg, raws li.
Feem ntau, Oxymercuration cov tshuaj tiv thaiv yog ua raws li cov tshuaj tiv thaiv demercuration; li no peb hu nws ua Oxymercuration-reduction reaction. Xyaum, qhov kev txo qis no ntau dua li cov tshuaj tiv thaiv Oxymercuration.
Dab tsi yog qhov zoo sib xws ntawm Alkoxymercuration thiab Oxymercuration?
- Alkoxymercuration thiab oxymercuration cov tshuaj tiv thaiv ua raws li Markonikov txoj cai.
- Ob qhov kev cuam tshuam cuam tshuam nrog alkene ua tus reactant.
- Cov tshuaj tiv thaiv no xav tau mercuric acetate.
- Lawv yog cov txheej txheem hluavtaws tseem ceeb hauv qee cov txheej txheem kev lag luam.
Qhov txawv ntawm Alkoxymercuration thiab Oxymercuration yog dab tsi?
Alkoxymercuration thiab oxymercuration yog cov txheej txheem hluavtaws tseem ceeb hauv qee cov txheej txheem kev lag luam. Qhov sib txawv tseem ceeb ntawm alkoxymercuration thiab oxymercuration yog tias alkoxymercuration tsim ib qho ether los ntawm alkene thiab cawv, whereas oxymercuration forms nruab nrab cawv los ntawm alkene.
Cov hauv qab no infographic nthuav tawm qhov sib txawv ntawm alkoxymercuration thiab oxymercuration hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Alkoxymercuration vs Oxymercuration
Alkoxymercuration thiab oxymercuration ua raws li Markonikov txoj cai los tsim cov khoom sib txawv ntawm alkenes thiab mercuric acetate. Qhov sib txawv tseem ceeb ntawm alkoxymercuration thiab oxymercuration yog tias alkoxymercuration tsim ib qho ether los ntawm alkene thiab cawv, whereas oxymercuration forms nruab nrab cawv los ntawm alkene.
