Question:
Which of the following reagents is used in the preparation of nitroalkane from haloalkane?
Which of the following reagents is used in the preparation of nitroalkane from haloalkane?
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$AgNO_2 \rightarrow$ Nitroalkane; $KNO_2 \rightarrow$ Alkyl nitrite.
Updated On: Apr 30, 2026
- Potassium cyanide
- Sodium nitrite
- Potassium nitrite
- Silver nitrite
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Concept
Nitrite ion ($NO_2^-$) is an ambident nucleophile; it can bond through $O$ or $N$.
Step 2: Analysis
- $KNO_2$ is ionic, and the $O$ atom (carrying the negative charge) attacks to form an alkyl nitrite ($R-O-N=O$). - $AgNO_2$ is covalent. The lone pair on Nitrogen is the primary nucleophilic site, leading to the formation of a nitroalkane ($R-NO_2$).
Step 3: Conclusion
Silver nitrite ($AgNO_2$) is used to prepare nitroalkanes.
Final Answer: (D)
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