iTeachChem•9mo ago

organic

What will be main product when cyclohex-1-ene reacts with br2 in presence of UV light

iTeachChem Helper•4/7/25, 6:59 PM

@Dexter

iTeachChem Helper•4/7/25, 6:59 PM

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SephrinaOP•4/7/25, 7:00 PM

my book says 1-bromocyclohex-2-ene

SephrinaOP•4/7/25, 7:00 PM

ai says bromocyclohexane

SephrinaOP•4/7/25, 7:01 PM

i think it should be ,4-dibromocyclohexane

iTeachChem•4/8/25, 1:10 AM

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SephrinaOP•4/8/25, 11:28 AM

yeah so free radical will attack on double bond making it a bond with the one c and other will have one free electron and tht will move to para cuz of elctron density makng

SSephrina i think it should be ,4-dibromocyclohexane

SephrinaOP•4/8/25, 11:28 AM

this

SephrinaOP•4/8/25, 11:30 AM

my attempt

SirLancelotDuLac•4/8/25, 11:37 AM

I think the reason for that is homolytic cleavage of the double bond here requires more energy as compared to formation of a free radical next to the double bond (which is very stable die to resonance.). So, 1-bromocyclohex-2-ene would be the major product.

SSirLancelotDuLac I think the reason for that is homolytic cleavage of the double bond here requir...

SephrinaOP•4/8/25, 11:39 AM

could be yeah but how will i know in a reaction in general ki kab aisa hoga?

Opt•4/8/25, 12:17 PM

You could just remember free radical halogenation as halogenation of sp³ carbon.

Opt•4/8/25, 12:21 PM

Ok the other hand, you could remember that the bond dissociation energy of a C-C double bond is 682kJ/mol while C-H bond dissociation energy is 337.2kJ/mol but that's illogical

OOpt You could just remember free radical halogenation as halogenation of sp³ carbon.

SephrinaOP•4/8/25, 12:59 PM

ok thnks

SephrinaOP•4/8/25, 12:59 PM

+solved @SirLancelotDuLac @Opt

iTeachChem Helper•4/8/25, 12:59 PM

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