Kolbe’s reaction
Phenoxide ion generated by treating  phenol with sodium hydroxide
is even more reactive than phenol towards electrophilic aromatic
substitution Hence, it undergoes electrophilic substitution with
carbon dioxide, a weak electrophile Ortho hydroxybenzoic acid is
formed as the main reaction product Rationalised 2023-24
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Alcohols, Phenols and Ethers
3