Video: T butoxide ua li cas rau cov tshuaj tiv thaiv?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
tert - butoxide tuaj yeem siv los tsim cov "tsawg hloov" alkenes hauv kev tshem tawm cov tshuaj tiv thaiv (E2, tshwj xeeb). Feem ntau, kev tshem tawm cov tshuaj tiv thaiv haum rau "ntau hloov" alkene - uas yog, Zaitsev cov khoom.
Kuj paub yog, T BuOK puas muaj zog Nucleophile?
Exceptions: tert- BuOK yog ib heev muaj zog puag tab sis neeg pluag nucleophile , vim yog steric hindrance.
Tom qab ntawd, lo lus nug yog, vim li cas tert butoxide yog lub hauv paus muaj zog? Hauv (CH3) 3C-OH, conjugate acid ntawm lub tert - butoxide ion, qhov + kuv cuam tshuam rau cov cawv carbon yog peb zaug uas nyob rau hauv CH3-CH2-OH, conjugate acid ntawm ethoxide ion uas tsuas muaj ib pawg methyl. Thiab lub conjugate puag ntawm lub weaker acid yog ib txwm muaj zog dua tshaj li ntawm muaj zog dua kua qaub.
Tom qab ntawd, lo lus nug yog, puas yog T butoxide lub hauv paus muaj zog?
Potassium tert - butoxide yog cov tshuaj sib xyaw nrog cov mis K+(CH3)3CO−. Cov khoom tsis muaj xim no yog ib lub hauv paus muaj zog (pKa ntawm conjugate acid nyob ib ncig ntawm 17), uas yog pab tau nyob rau hauv cov organic synthesis. Nws tshwm sim raws li tetrameric cubane-type pawg.
Puas yog tert butoxide yog Nucleophile zoo?
Kev piav qhia: Zoo Nucleophiles Ntawd Yog Lub Hauv Paus Tsis Muaj Zog (Qhov no yog txoj hauv kev nruj dua hais tias cov hauv paus tsis muaj zog tsis ua E2 cov tshuaj tiv thaiv). Hauv qhov sib piv, lub hauv paus loj hauv qab no ( tert - butoxide ion) yog lub hauv paus muaj zog tab sis cov neeg pluag nucleophile vim nws qhov kev cuam tshuam loj heev, yog li E2 cov tshuaj tiv thaiv muaj ntau dua li SN2.
Pom zoo:
Vim li cas cov tshuaj tiv thaiv kev zom zaub mov hu ua hydrolysis cov tshuaj tiv thaiv?
Thaum lub sij hawm zom mov, piv txwv li, decompositionreactions zom cov zaub mov loj rau hauv cov me me los ntawm kev ntxiv cov dej molecules. Hom tshuaj no hu ua hydrolysis. Raws li dej absorbs heatenergy, qee lub zog yog siv los rhuav tshem hydrogenbonds
Lub npe rau ib yam khoom tsim nyob rau hauv cov tshuaj tiv thaiv tshuaj yog dab tsi?
Cov tshuaj tiv thaiv tshuaj yog cov txheej txheem uas cov atoms tam sim no nyob rau hauv cov tshuaj pib rov ua kom muab cov tshuaj sib xyaw tshiab tam sim no hauv cov tshuaj tsim los ntawm cov tshuaj tiv thaiv. Cov tshuaj pib ntawm cov tshuaj tiv thaiv tshuaj hu ua reactants, thiab cov tshuaj tshiab uas tshwm sim hu ua cov khoom
Cov tshuaj tiv thaiv zoo li cas thaum cov tshuaj nkag mus rau hauv cov hlab ntsha?
Cov tshuaj tiv thaiv 'systemic' tshwm sim thaum cov tshuaj nkag mus rau hauv cov hlab ntsha los ntawm daim tawv nqaij, qhov muag, qhov ncauj, lossis lub ntsws
Cov tshuaj tiv thaiv dab tsi yog qhov tshuaj tiv thaiv neutralization?
Neutralization yog ib hom tshuaj tiv thaiv nyob rau hauv uas muaj zog acid thiab muaj zog puag react nrog ib leeg los tsim dej thiab ntsev
Dab tsi yog tshuaj lom neeg cov tshuaj tiv thaiv thiab cov tshuaj tiv thaiv lub cev?
Qhov sib txawv ntawm cov tshuaj tiv thaiv lub cev thiab cov tshuaj tiv thaiv tshuaj yog muaj pes tsawg leeg. Hauv cov tshuaj tiv thaiv tshuaj, muaj kev hloov pauv ntawm cov tshuaj hauv nqe lus nug; nyob rau hauv ib qho kev hloov ntawm lub cev muaj qhov sib txawv ntawm qhov tsos, tsis hnov tsw, los yog cov duab yooj yim ntawm cov qauv ntawm cov teeb meem yam tsis muaj kev hloov pauv hauv cov ntsiab lus