Qhov sib txawv tseem ceeb ntawm alpha thiab beta naphthol yog tias alpha naphthol muaj ib pawg hydroxyl ntawm 1 stcarbon atom uas nyob ib sab ntawm lub nplhaib qauv, whereas beta naphthol muaj a hydroxyl pawg ntawm 2nd carbon atom los ntawm lub nplhaib qauv.
Alpha thiab beta naphthol yog cov qauv isomers ntawm ib leeg. Alpha naphthol yog tshuaj hu ua 1-naphthol lossis naphthalen-1-ol, thaum beta naphthol yog tshuaj hu ua naphthalen-2-ol. Cov tebchaw no muaj txiaj ntsig zoo li biomarkers hauv cov tsiaj nyeg thiab tib neeg uas raug rau polycyclic aromatic hydrocarbons.
Alpha Naphthol yog dab tsi?
Alpha naphthol yog cov organic compound uas muaj cov tshuaj formula C10H7OH. Hauv qhov sib xyaw no, ib pawg hydroxyl txuas nrog cov pa roj carbon atom uas nyob ib sab ntawm cov qauv nplhaib nyob sib ze. Nws yog fluorescent organic compound. Nws tseem hu ua 1-naphthol lossis naphthalen-1-ol. Nws yog cov qauv isomer ntawm beta naphthol. Ob lub isomers no txawv ntawm ib leeg nyob ntawm qhov chaw ntawm pawg -OH.
Daim duab 01: Cov Qauv Tshuaj ntawm Alpha Naphthol
Feem ntau, naphthol compounds yog naphthalene homologues compounds ntawm phenol. Txawm li cas los xij, pawg hydroxyl yog ntau reactive piv rau cov phenols sib xws. Hauv naphthol molecule, muaj ob lub nplhaib sib txuas rau ib leeg. Ib qho ntawm cov qauv nplhaib no muaj cov pab pawg hydroxyl hloov pauv. Alpha naphthol compound tshwm raws li cov khoom tsis muaj xim lossis dawb uas yog muag hauv cov xim muaj zog.
Alpha naphthol tuaj yeem tsim tau ob txoj hauv kev loj. Txoj kev tshaj plaws yog nitration ntawm naphthalene los ua 1-nitronaphthalene. Tom qab ntawd, nws yog hydrogenated rau qhov sib xyaw amine compound. Tom qab ntawd peb tuaj yeem ua cov hydrolysis kom tau cov khoom xav tau naphthol. Txoj kev thib ob yog hydrogenation ntawm naphthalene rau tetralin, ua raws li cov tshuaj tiv thaiv dehydrogenation.
Cov ntawv thov ntawm alpha naphthol suav nrog kev siv hauv Molisch qhov kev sim, kev sim nrawm nrawm, Sakaguchi kuaj, thiab Voges-Proskauer kuaj, ua tus thawj coj rau cov tshuaj tua kab sib txawv xws li carbonyl thiab tshuaj xws li nadolol, thiab lwm yam.
Beta Naphthol yog dab tsi?
Beta naphthol yog cov organic compound uas muaj cov tshuaj formula C10H7OH. Hauv qhov sib xyaw no, ib pawg hydroxyl txuas nrog 2 ndcarbon atom los ntawm cov qauv nplhaib nyob sib ze. Nws yog tshuaj hu ua 2-naphthol lossis naphthalen-2-ol. Beta naphthol yog cov tshuaj fluorescent tsis muaj xim crystalline. Cov tshuaj no txawv ntawm alpha naphthol raws li qhov chaw ntawm pawg hydroxyl.
Daim duab 02: Cov Qauv Tshuaj ntawm Beta Naphthol
Beta naphthol yog ib qho tseem ceeb hauv kev tsim cov dyes thiab lwm cov tebchaw. Nws muaj raws li cov xim tsis muaj xim crystalline uas tuaj yeem ua rau muaj kev phom sij thaum nqus los yog nqos.
Thaum xav txog kev tsim cov beta naphthol, nws yog tsim los ntawm cov txheej txheem nrog ob kauj ruam; sulfonation ntawm naphthalene nyob rau hauv sulfuric acid (raws li cleavage ntawm molten sodium hydroxide) thiab cov tshuaj tiv thaiv neutralization.
Dab tsi zoo sib xws ntawm Alpha thiab Beta Naphthol?
- Alpha thiab Beta Naphthol yog cov qauv isomers.
- Ob leeg muaj txiaj ntsig zoo li biomarkers.
- Lawv yog soluble hauv cawv yooj yim, ethers, thiab chloroform.
Qhov txawv ntawm Alpha thiab Beta Naphthol yog dab tsi?
Alpha thiab beta naphthol yog cov qauv isomers ntawm ib leeg. Qhov sib txawv tseem ceeb ntawm alpha thiab beta naphthol yog tias alpha naphthol muaj ib pawg hydroxyl ntawm 1 stcarbon atom uas nyob ib sab ntawm lub nplhaib qauv, whereas beta naphthol muaj ib pawg hydroxyl ntawm 2. nd carbon atom los ntawm lub nplhaib qauv.
Cov hauv qab no infographic teev qhov sib txawv ntawm alpha thiab beta naphthol hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Alpha vs Beta Naphthol
Alpha thiab beta naphthol yog cov qauv isomers ntawm ib leeg. Qhov sib txawv tseem ceeb ntawm alpha thiab beta naphthol yog tias alpha naphthol muaj ib pawg hydroxyl ntawm 1 stcarbon atom uas nyob ib sab ntawm lub nplhaib qauv, whereas beta naphthol muaj ib pawg hydroxyl ntawm 2. nd carbon atom los ntawm lub nplhaib qauv.
