if halogenation of phenol is done in a non polar solvent like carbon disulfide,we get monosubstituted product (ortho or para bromophenol for instance).......But ,if done in aqueous Bromine we get trisubstituted product (2,4,6 tribromophenol)....why is it so???

Question

aaronq · Answer

If you have the catalyst present for EAS in both systems, then the only reason i can think of is the large abundance/surplus of bromine when in $Br_{2~(l)}$.