Question

The incorrect statement regarding the reaction given below is

• A. The product 'B' formed in the above reaction is p-nitroso compound at low temperature.
• B. The reaction occurs at low temperature
• C. The electrophile involved in the reaction is NO⁺
• D. 'B' is N-nitroso ammonium compound

Answer 1

The Correct Option is D

Given the reaction of N,N-dimethylaniline ('A') with NaNO2 and HX to form 'B', the correct statements are: 
(1) The electrophile involved in the reaction is NO+. 
(3) The reaction occurs at low temperature. 
(4) The product 'B' formed in the above reaction is p-nitroso compound at low temperature. 
Explanation: 
* The reaction is a diazotization reaction specific to tertiary aromatic amines. 

* NaNO2 and HX generate the nitrosonium ion (NO+), which is the electrophile. 

* Diazotization reactions are performed at low temperatures to prevent decomposition of intermediates. 

* The product formed is a p-nitroso compound due to electrophilic aromatic substitution at the para position. 
Statement (2) is incorrect because the product is a p-nitroso compound, not an N-nitroso ammonium compound.