The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is?

benzoic acid

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salicylaldehyde

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salicylic acid

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phtalic acid

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Solution

The correct option is C salicylic acid
Reaction of phenol with sodium hydroxide and carbon dioxide is known as Kolbe's reaction that is a electrophilic substitution reaction resulting in the formation of salicylic acid as shown in the reaction. The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is salicylic acid. Hence, the correct answer is option (c).
Mechanism involves three steps:
Step-1: Formation of phenoxide

Step-2: Attack of electrophile
Step-3: Protonation

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