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 Q.18   Explain the following with an example.
               (i) Kolbe’s reaction.

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Kolbe’s reaction:  Phenol with carbon dioxide under pressure followed by treating the product with sulphuric acid produces Ortho-hydroxybenzoic acid (salicylic acid). Phenoxide ion generated is more reactive than phenol towards electrophilic aromatic substitution. Hence, it undergoes electrophilic substitution with carbon dioxide, a weak electrophile.

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HARSH KANKARIA

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