Cov txheej txheem:
- Electrophilic aromatic hloov pauv piv txwv yog dab tsi?
- Qhov twg cuam tshuam los ntawm kev hloov pauv ntawm aromatic electrophilic hloov pauv?
- Electrophile nyob rau hauv kev hloov electrophilic yog dab tsi?
- Cov tshuaj tiv thaiv electrophilic hloov pauv yog dab tsi muab piv txwv?
Video: Ntawm electrophilic aromatic hloov?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Electrophilic aromatic hloov pauv yog cov tshuaj tiv thaiv organic uas yog ib qho atom uas txuas rau lub cev muaj ntxhiab (feem ntau hydrogen) yog hloov los ntawm electrophile.
Electrophilic aromatic hloov pauv piv txwv yog dab tsi?
Nitration thiab sulfonation ntawm benzene yog ob qho piv txwv ntawm electrophilic aromatic hloov. Cov nitronium ion (NO2+) thiab sulfur trioxide (SO3) yog cov electrophiles thiab tus kheej. React nrog benzene muab nitrobenzene thiab benzenesulfonic acid feem.
Qhov twg cuam tshuam los ntawm kev hloov pauv ntawm aromatic electrophilic hloov pauv?
Kev sim tau pom tias cov khoom hloov pauv ntawm lub nplhaib benzene tuaj yeem cuam tshuam qhov tshwm sim hauv qhov muaj txiaj ntsig Piv txwv li, hydroxy lossis methoxy hloov pauv nce tus nqi ntawm kev hloov pauv electrophilic txog kaum txhiab npaug, raws li tau piav qhia los ntawm rooj plaub ntawm anisole hauv kev ua qauv qhia virtual (saum toj no).
Electrophile nyob rau hauv kev hloov electrophilic yog dab tsi?
Hauv kev hloov pauv ntawm electrophilic hauv aliphatic compounds, ib qho electrophile hloov chaw ua haujlwm. Cov tshuaj tiv thaiv no zoo ib yam li nucleophilic aliphatic hloov pauv qhov twg cov reactant yog nucleophile es tsis yog electrophile.
Cov tshuaj tiv thaiv electrophilic hloov pauv yog dab tsi muab piv txwv?
Raws li cov aromaticity ntawm benzene tsis cuam tshuam rau hauv cov tshuaj tiv thaiv, cov tshuaj tiv thaiv yog qhov tshwm sim ntawm qhov xwm txheej. Cov piv txwv tseem ceeb ntawm electrophilic hloov pauv cov tshuaj tiv thaiv ntawm benzene yog nitration, sulfonation, halogenation, Friedel Craft's alkylation thiab acylation, thiab lwm yam.
Pom zoo:
Puas yog qhov hloov pauv hloov tau tuaj yeem hloov kho?
Qhov kev ywj pheej (lossis tswj hwm) qhov sib txawv yog qee yam uas tus kws sim lub hom phiaj hloov pauv lossis txawv ntawm qhov kev tshawb nrhiav. Qhov dependent (los yog teb) sib txawv yog ib qho uas tau pom thiab yuav hloov pauv hauv cov lus teb rauqhov sib txawv ntawm tus kheej .
Puas hloov pauv hloov pauv tuaj yeem hloov kho?
Nyob hauv ntau qhov kev sim, qhov sib txawv ntawm kev ywj pheej yog kev tsim kho uas tsuas yog tuaj yeem tswj tsis ncaj . Puas yog qhov sib txawv nyob ntawm qhov ntsuas lossis tswj tau? Ib qhov sib txawv yog qhov ntsuas lossis manipulated hauv kev sim.
Ib qho piv txwv ntawm kev hloov chaw hloov chaw yog dab tsi?
Txoj kev hloov chaw Diffusion txhais: Kev sib kis ntawm lub tswv yim los ntawm kev txav lub cev ntawm tib neeg los ntawm ib qho chaw mus rau lwm qhov. Piv txwv li: Hip-hop thiab rap suab paj nruag yog ib qho piv txwv ntawm kev tsim kho tshiab uas tshwm sim hauv nroog, txawm tias txawv los ntawm cov neeg Asmeskas cov neeg tau nyiaj tsawg tsis yog los ntawm cov neeg tseem ceeb hauv zej zog .
Dab tsi ntawm cov hauv qab no txo qis los ntawm laminating cov tub ntxhais ntawm lub tshuab hloov pauv?
Dab tsi ntawm cov hauv qab no txo qis los ntawm laminating cov tub ntxhais ntawm lub tshuab hloov pauv? Hysteresis poob . YYuav siv dab tsi los laminate cov tub ntxhais ntawm transformer? Silicon Steel plays lub luag haujlwm loj heev hauv laminated core-based transformers.
Dab tsi ntawm cov hauv qab no txo qis los ntawm laminating lub hauv paus ntawm lub tshuab hloov pauv?
Dab tsi ntawm cov hauv qab no txo qis los ntawm laminating lub hauv paus ntawm lub tshuab hloov pauv? Hysteresis poob . Lub hom phiaj ntawm laminating cov tub ntxhais hauv lub transformer yog dab tsi? Cov tub ntxhais hlau ntawm lub tshuab hloov pauv yog laminated nrog cov ntawv nyias;
