Cov txheej txheem:
Video: Cov tshuaj phenol tau txais dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Phenol reacts nrog:
- Lub hauv paus (zoo li NaOH) los tsim cov phenoxide anion. Qhov no yog deprotonation tshuaj tiv thaiv , vim yog tshem tawm cov proton (hydrogen).
- Acetyl chloride los yog acetic anhydride los tsim ib qho ester (OH pawg yog hloov los ntawm ib pawg O-alkyl)
Ib yam li ntawd, nws tau nug, hom tshuaj tiv thaiv dab tsi tshwm sim ntawm phenol thiab br2?
Cov tshuaj tiv thaiv ntawm phenol nrog bromine yog hu ua bromination ntawm phenol. Cov kuab tshuaj muaj txiaj ntsig zoo rau cov tshuaj tiv thaiv. Nyob hauv cov kuab tshuaj sib txawv, cov khoom sib txawv tau txais. Kev ua ntawm bromine ntawm phenol tuaj yeem piav qhia raws li. Phenol reacts nrog bromine dej muab 2, 4, 6-tribromophenol.
Qhov thib ob, phenol puas tuaj yeem ua rau muaj carboxylic acid? Koj yuav tej zaum nco ntsoov tias koj ua tau ua esters los ntawm cawv los ntawm kev ua rau lawv nrog carboxylic acids . Txawm li cas los xij, tsis zoo li cawv, phenol reacts maj mam nrog carboxylic acids uas koj ib txwm teb nws nrog acyl chlorides ( kua qaub chlorides) los yog kua qaub anhydrides xwb.
Xav txog qhov no, puas yog phenol undergo oxidation?
Oxidation . Zoo li lwm yam cawv, phenols raug oxidation , tab sis lawv muab ntau hom khoom los ntawm cov neeg pom nrog aliphatic cawv. Piv txwv li, chromic acid oxidizes feem ntau phenols rau conjugated 1, 4-diketones hu ua quinones.
Puas yog benzoic acid react nrog phenol?
Phenols tsis muaj zog heev kua qaub . Lawv ua tsis yog teb nrog lub hauv paus tsis muaj zog xws li sodium hydrogen carbonate. Benzoic acid yog ib tug muaj zog kua qaub . Nws reacts nrog sodium hydrogen carbonate muab effervescence ntawm carbon dioxide gas.
Pom zoo:
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