Lub hauv paus ntsiab lus: Ntawm no cawv pawg ntawm benzoin yog oxidized rau ketone pawgua benzil nyob rau hauv muaj cov concentrated nitric acid. Nitration ntawm aromatic nplhaib tsis tshwm sim vim sulfuric acid tsis tuaj yeem nyob rau hauv tag nrho cov txheej txheem.
Dab tsi yog oxidation ntawm benzoin rau benzil?
Oxidation ntawm benzoin rau benzil tau kawm dav dav rau kev tsim cov tshuaj zoo [1-6]. … Qhov kev hloov pauv oxidative ntawm α-hydroxy ketone rau qhov sib thooj α-diketone (benzoin rau benzil) tau ua tiav los ntawm kev siv ntau hom reagents lossis catalysts thiab cov txheej txheem sib txawv.
Koj yuav npaj benzil los ntawm benzoin li cas?
Tshav kub sib tov ntawm 4 g ntawm benzoin thiab 14 ml ntawm cov ntsiab lus nitric acid rau ntawm chav da dej rau 11 feeb Ua cov tshuaj tiv thaiv hauv qab hood. 2. Thaum cov tshuaj tiv thaiv tiav, ntxiv 75 ml dej rau cov tshuaj tiv thaiv sib tov, txias rau hauv chav tsev kub, thiab swirl rau ib feeb lossis ob zaug kom coagulate cov khoom precipitated.
YYuav ua li cas cov tshuaj reagents tuaj yeem siv los ntawm kev sib txuas ntawm benzil los ntawm benzoin?
Benzil yog npaj los ntawm benzoin, piv txwv li nrog copper(II) acetate: PhC(O)CH(OH)Ph + 2 Cu2 + → PhC(O)C(O)Ph + 2 H+ + 2 Cu. Lwm cov tshuaj oxidizing tsim nyog xws li nitric acid (HNO 3) yog siv niaj hnub.
Qhov twg yog tus neeg sawv cev oxidising zoo tshaj plaws siv rau kev sib txuas ntawm benzil los ntawm benzoin?
H2O2 yog pheej yig thiab ib puag ncig tus phooj ywg oxidant. Nws tau pom tias homogeneous catalyst yog nquag heev hauv kev hloov pauv siab ntawm benzoin rau benzil.
