Reduction Of Nitriles
LiAlH₄ reduction of nitriles produces:
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About This Question
- Subject
- chemistry
- Chapter
- organic compounds containing nitrogen
- Topic
- reduction of nitriles
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Primary amines
Nitriles (Cyanides) are chemically reduced to amines using powerful reducing agents like Lithium Aluminium Hydride (LiAlH4) or through catalytic hydrogenation (using H2/Ni).
- Reaction: R−C≡N+4[H]LiAlH4R−CH2−NH2
- The triple bond is reduced to a single bond, with two hydrogen atoms adding to each of the carbon and nitrogen atoms.
- This reaction is unique because it increases the carbon chain length by one unit relative to the starting alkyl halide used to make the nitrile.
This easy difficulty chemistry question is from the chapter organic compounds containing nitrogen, covering the topic of reduction of nitriles. It appeared in the 2025 exam.
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