Question:

IUPAC name of major product will be: 

 

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When nitriles are treated with strong bases and acid, they undergo hydrolysis to form carboxylic acids, which can then undergo halogenation at the alpha position (C-2) to give alpha-halocarboxylic acids.
Updated On: Apr 6, 2026
  • 2-chloro propanoic acid
  • 3-chloro propanoic acid
  • Propanoyl chloride
  • 2-hydroxy propanoic acid
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The Correct Option is A

Solution and Explanation


Step 1:
Analyze the reaction with \( \text{OH}^-/\text{H}_2\text{O} \).
The given compound is an alkylnitrile, \( \text{CH}_3\text{CH}_2\text{C}\equiv\text{N} \). When treated with a strong base like \( \text{OH}^- \), the nitrile group undergoes hydrolysis, forming an amide (in this case, propionamide) with the reaction:
\[ \text{CH}_3\text{CH}_2\text{C}\equiv\text{N} + \text{OH}^- + \text{H}_2\text{O} \rightarrow \text{CH}_3\text{CH}_2\text{C(O)NH}_2 \]
Step 2:
Analyze the reaction with \( \text{H}^+/O^2- \).
When the amide undergoes acid hydrolysis, it forms the corresponding carboxylic acid, \( \text{CH}_3\text{CH}_2\text{COOH} \). In this case, the product is propanoic acid.

Step 3:
Analyze the reaction with \( \text{Red P}/\text{Cl}_2 \).
When the carboxylic acid reacts with \( \text{Red P}/\text{Cl}_2 \), a substitution reaction occurs, where the hydrogen atom at the alpha position (C-2) of the carboxylic acid group is replaced with a chlorine atom. This forms 2-chloro propanoic acid.

Step 4:
Conclusion.
Thus, the major product is 2-chloro propanoic acid. The correct IUPAC name is 2-chloro propanoic acid.
Final Answer: 2-chloro propanoic acid
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