Question

Identify the incorrect option from the following:

• A.

  

• B.

  

• C.

  

• D.

  

Hint:

Alcoholic KOH generally promotes elimination reactions (E2 mechanism), while aqueous KOH favors nucleophilic substitution reactions (SN₂ or SN₁)

Answer 1

The Correct Option is A

Analysis of the Given Reactions:

1. Option (1): The reaction involves alcoholic KOH, which promotes elimination (E2 mechanism). However, the product shown is incorrect because the major product should be a double bond formed due to elimination, not a substitution product
2. Option (2): This is a Dow process, correctly showing the conversion of chlorobenzene to phenol under high temperature and pressure.
3. Option (3): The reaction involves the substitution of −Br with −OH using aqueous KOH. This is a correct nucleophilic substitution reaction.
4. Option (4): The reaction is a Friedel-Crafts acylation, which is correctly represented.

Conclusion: The incorrect reaction is Option (1).