First slide

Chemical Properties of Phenols

Question

In the reaction,
the electrophile involved is

Easy

A

$dichloromethyl cation (\overset{+}{C} {HCl}_{2})$
B

$formyl cation (\overset{+}{C} HO)$
C

$dichloromethyl anion (\bar{C} {HCl}_{2})$
D

$dichlorocarbene (: {CCl}_{2})$

Solution

It is Reimer-Tiemann reaction. The electrophile formed is dichlorocarbene $(: {CCl}_{2})$ which is formed according to the following mechanism :

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