Dab tsi yog intramolecular aldol condensation?
Dab tsi yog intramolecular aldol condensation?

Video: Dab tsi yog intramolecular aldol condensation?

Video: Dab tsi yog intramolecular aldol condensation?
Video: Thermochemistry: Heat and Enthalpy 2024, Kaum ib hlis
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Intramolecular Aldol Condensation Reaction . Tej zaum 25, 2016 Los ntawm Leah4sci Cia ib saib. Intramolecular Aldol condensations tshwm sim thaum ib qho molecule muaj 2 tshuaj tiv thaiv aldehyde / ketone pawg. Thaum cov alpha carbon ntawm ib pawg tawm tsam lwm tus, cov molecule tawm tsam nws tus kheej tsim lub nplhaib qauv.

Ua raws li qhov no hauv kev xav, dab tsi yog cov tshuaj tiv thaiv intramolecular Cannizzaro?

Cannizzaro Reaction . Qhov redox disproportionation ntawm non-enolizable aldehydes rau carboxylic acids thiab cawv yog ua nyob rau hauv concentrated puag. α-Keto aldehydes muab cov khoom ntawm ib qho intramolecular disproportionation nyob rau hauv zoo yields.

cross aldol condensation yog dab tsi? A hla aldol condensation siv ob qhov sib txawv aldehyde thiab / lossis ketone reactants. Xws li cov tshuaj tiv thaiv feem ntau muab sib xyaw ntawm ntau yam condensation cov khoom, vim hais tias muaj ob los yog ntau tshaj tau enolate nucleophiles, thiab ob yam carbonyl electrophiles.

Kuj nug, dab tsi yog aldol condensation sau nws mechanism?

Aldol Condensation yog qhov zoo tshaj plaws tuaj yeem txhais tau tias yog cov organic tshuaj tiv thaiv nyob rau hauv uas enolate ion reacts nrog ib tug carbonyl compound los tsim β-hydroxy ketone los yog β-hydroxy aldehyde, ua raws li lub cev qhuav dej kom muab ib tug conjugated enone. Aldol Condensation yog qhov zoo tshaj plaws plays lub luag haujlwm tseem ceeb hauv cov organic synthesis, tsim txoj hauv kev los tsim cov carbon-carbon bonds.

Dab tsi yog lub luag haujlwm ntawm NaOH hauv aldol condensation?

NaOH nws undergoes tus kheej condensation Raws li nws muaj alpha-hydrogen atom nyob rau hauv nws cov compound tsim β-hydroxyaldehyde (ib aldol ua ) uas yog 3-Hydroxy butanal. Qhov kev sib xyaw no thaum cua sov ntxiv yuav tshem tawm cov dej molecule aldol condensation ntawm daim tawv nqaij Cov khoom uas yog Crotonaldehyde lossis But-2-en-al.

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