Thaum tsis muaj peroxide, HBr ntxiv rau propene los ntawm cov txheej txheem ionic (nrog rau carbocation intermediate) muab 2-bromopropane. Markovnikov txoj cai yog ua raws.
Yuav ua li cas thaum propene reacts nrog HBr nyob rau hauv muaj peroxide?
Thaum $HBr$ reacts nrog propene nyob rau hauv lub xub ntiag ntawm peroxide raws li catalyst nws ua rau tsim ntawm $n-$ propyl bromide. Qhov no yog anti-markovnikov ntxiv cov tshuaj tiv thaiv. Thaum cov dawb radicals teb nrog hydrogen bromide, nws rho tawm hydrogen los ntawm hydrogen bromide thiab muab bromine radical.
Dab tsi yog cov khoom ntawm peroxide ntxiv ntawm HBr rau propene?
Ntxiv ntawm HBr rau propene yields 2-bromopropane, thaum nyob rau hauv muaj benzoyl peroxide, tib cov tshuaj tiv thaiv yields 1-bromopropane. Piav thiab muab mechanism. Cov lus qhia: Nws pom tias qhov sib ntxiv ntawm HBr rau propene yields 2-bromopropane raws li Markovnikov txoj cai.
Qhov twg yog cov khoom loj tsim thaum propene reacts nrog HBr thaum tsis muaj peroxides?
Methyl bromide rau ethyl bromide
Yuav ua li cas thaum propene reacts nrog HBr?
yuav ua li cas thaum propene kho nrog hbr? Propene reacts nrog HBr thiab produce CH 3CHBrCH3 (2-bromopropane). Nws yog ib qho alkyl haalide compound thiab qhov kev rov ua dua no yog kev rov ua dua ntxiv. Tsis tas li, koj tuaj yeem kho HBr nyob rau hauv muaj cov organicperoxides hloov qhov chaw uas bromine atom yog sib koom.
