Teb: Cov tshuaj ntawm diazotization ua raws li kev sib txuas nrog yog p-Toluidine becoz nws yog thawj cov tshuaj tsw qab amines. thawj amines lossis thawj cov tshuaj tsw qab amines yog cov nucleophiles zoo uas yog vim li cas lawv tau txais kev sib txuas lus. Lub npe ntawm aromatic amines yog aniline (C6H5NH2).
Qhov twg ntawm cov tshuaj hauv qab no ntawm diazotization ua raws li kev sib txuas nrog 2 naphthol yuav tsim?
Ntxiv benzene diazonium chloride reacts nrog 2-naphthol tsim cov xim txiv kab ntxwv ci 2-naphthol aniline dye. Azo tebchaw yog npaj los ntawm cov tshuaj tiv thaiv ntawm diazonium ntsev nrog phenol nyob rau hauv alkaline tej yam kev mob.
Qhov twg ntawm cov tebchaw ua rau cov tshuaj tiv thaiv diazotization?
7.9.
Diazotization yog ib qho tseem ceeb ntawm 1° amines Hauv cov txheej txheem diazotization, NH 2 pawg hloov mus rau diazonium ntsev, R–N2+X- Qhov no yog ua los ntawm cov tshuaj tiv thaiv nitrous acid (HNO2). Cov ntsev reactive feem ntau tsis cais.
koj txhais li cas los ntawm diazonium coupling?
Ib qho azo coupling yog cov tshuaj tiv thaiv organic ntawm diazonium compound thiab lwm cov tshuaj tsw qab uas tsim cov azo compound Hauv cov tshuaj tiv thaiv hluav taws xob uas muaj ntxhiab hloov pauv, aryldiazonium cation yog electrophile thiab activated arene yog nucleophile.
Dab tsi yog qhov tshuaj tiv thaiv diazotization muab piv txwv?
Aromatic Amine + Nitrous Acid + Mineral Acid? Diazonium ntsev + Dej. Cov tshuaj nyob rau hauv uas amino los yog hloov cov amino pawg yog sib txuas ncaj qha mus rau lub nplhaib uas muaj ntxhiab yog hu ua aromatic amines. Piv txwv li - Nitrous acid yog ib qho tsis muaj zog thiab monobasic acid uas feem ntau yog siv rau theem gaseous. Nws cov qauv yog HNO2.
