Video: NBS ua dab tsi hauv cov tshuaj tiv thaiv?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
N-Bromosuccinimide los yog NBS yog ib tug tshuaj reagent siv nyob rau hauv radical hloov, electrophilic ntxiv, thiab electrophilic hloov cov tshuaj tiv thaiv hauv organic chemistry. NBS tau ua ib qho chaw yooj yim ntawm Br•, cov bromine radical.
Yog li ntawd, NBS lub luag haujlwm yog dab tsi?
N-Bromosuccinimide ( NBS ) yog ib tug brominating thiab oxidizing tus neeg sawv cev uas yog siv los ua bromine nyob rau hauv radical tshua (piv txwv li: allylic brominations) thiab ntau yam electrophilic ntxiv.
Tom qab ntawd, lo lus nug yog, tus qauv ntawm NBS yog dab tsi? C4H4BrNO2
Ib yam li ib tug yuav nug, NBS ua li cas rau alkene?
NBS Raws li ib tug reagent rau Bromohydrin tsim los ntawm Alkenes Zoo, NBS tseem yuav tsim bromonium ions nrog alkenes . Thaum dej (los yog cawv) siv los ua cov kuab tshuaj, nws yuav tawm tsam cov bromonium ion, uas ua rau tsim cov halohydrin. Nco ntsoov tias stereochemistry yog ib txwm "trans".
Puas yog NBS polar?
Cov Lus Teb Ntxiv: - NBS feem ntau yog siv los ua qhov chaw ntawm electrophilic bromine hauv polar cov kuab tshuaj.
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