Q12.

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Question: Draw the products of each reaction. Assume excess halogen is present.




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The products formed in the given reactions are shown below.



1Step 1: Halogenation in bases

Halogenation is carried out by treating a carbonyl compound that has alpha hydrogens with a halogen in the presence of a base. When excess halogens are present, all the possible acidic protons get replaced with halides.

 

2Step 2: Mechanism involved in the halogenation in bases


The first step involves the abstraction of the proton by the base. The second step is the formation of an enolate. The third step involves the attack of enolate on electrophile in the presence of the base.


Representation of the halogenation in the presence of the base


3Step 3: The products formed in the given reactions


Considering all the explanations, the products formed are shown below.


Representation of the products formed by halogenation in bases