Question:
Hydrolysis of the minor product formed from the reaction of 1-Bromo propane and ethanolic KCN gives:
Hydrolysis of the minor product formed from the reaction of 1-Bromo propane and ethanolic KCN gives:
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SN2 reaction of 1° alkyl halide with KCN → nitrile, hydrolysis of nitrile → primary amine.
Updated On: Jun 26, 2026
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The Correct Option is A
Solution and Explanation
Step 1: Recognize reaction type.
1-Bromo propane reacts with ethanolic KCN via SN2 mechanism forming a nitrile as a major product.
Step 2: Hydrolysis.
Minor product arises from attack at the less substituted carbon → primary nitrile.
Step 3: Hydrolysis of nitrile.
Hydrolysis of the minor nitrile under acidic or basic conditions converts –CN to –NH\(_2\) (amine).
Step 4: Identify product.
\[ \text{CH}_3\text{CH}_2\text{CH}_2\text{NH}_2 \]
Step 5: Conclusion.
The minor product after hydrolysis is CH\(_3\)CH\(_2\)CH\(_2\)NH\(_2\).
1-Bromo propane reacts with ethanolic KCN via SN2 mechanism forming a nitrile as a major product.
Step 2: Hydrolysis.
Minor product arises from attack at the less substituted carbon → primary nitrile.
Step 3: Hydrolysis of nitrile.
Hydrolysis of the minor nitrile under acidic or basic conditions converts –CN to –NH\(_2\) (amine).
Step 4: Identify product.
\[ \text{CH}_3\text{CH}_2\text{CH}_2\text{NH}_2 \]
Step 5: Conclusion.
The minor product after hydrolysis is CH\(_3\)CH\(_2\)CH\(_2\)NH\(_2\).
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