Br2 addition to alkene

[allstardentist]

The answer is E. But why wouldnt C also work?

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[hlsawdust]

Aromatic rings are very stable so halogenation via Br2 isn't likely to happen. You'd need FeBr3 or PBr3 for EAS to occur, and even then, it would only be a single Br group that gets added.

 

[allstardentist]

Aromatic rings are very stable so halogenation via Br2 isn't likely to happen. You'd need FeBr3 or PBr3 for EAS to occur, and even then, it would only be a single Br group that gets added.

thanks.

 

[mightymouse23]

Just curious, but could A have been an answer if Br was added to either the ortho or para position, rather than the meta??? Just checking...

 

[hlsawdust]

Yep, the methyl group is an activating group so it'll be a o-p director

 

[mightymouse23]

Word Up G...

 

[fancymylotus]

br2 to alkene goes anti-add through cyclic halonium int and if its done in nucleophilic solvent you get halo alcohol instead of dihalo compound.