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How would you convert chlorobenzne and t...

How would you convert chlorobenzne and toulene into benzene ?

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Chlorobenzne can be converted to benzen by the reaction with magnesium in dry ether followed by hydrolysis.
`C_(6)H_(5)Cl underset("ether")overset(Mg)to underset("Grignard reagent")(C_(6)H_(5)MgCl) overset(H_(2)O //H^(+))to underset("Benzene")(C_(6)H_(6)+Mg(OH)Cl`
Benzene is obtained from toluene by the oxidation with `KMnO_(4)+KOH` and then decarboxylation with soda lime `(CaO+NaOH)`
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