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JEE Main Chemistry question

ChemistryOrganic Chemistry - Some Basic Principles and TechniquesJEE Main

Phenol reacts with and NaOH (the Reimer–Tiemann reaction) to give (after acidification) salicylaldehyde. The electrophile involved in this reaction has how many lone pair(s) of electrons on its central carbon atom?

Answer: 1

Solution

Base deprotonates chloroform and promotes -elimination to generate dichlorocarbene, , the electrophilic species that

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Question ID VK-149043