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Question

Which one of the following on reduction with LiAlH4 yields a secondary amine?

A
Methyl cyanide
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B
Nitroethane
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C
Methyl isocyanide
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D
Acetamide
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Solution

The correct option is C Methyl isocyanide
On catalytic reduction or with lithium aluminium hydride (LiAlH4) or with nascent hydrogen, alkyl isocyanide yield 2∘ amine whereas cyanide gives 1∘ amine on reduction.
hence c is correct answer

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