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Which of the following reagents can be u...

Which of the following reagents can be used to convert primary amides into primary amines containing the same number of carbon atoms ?

A

`Br_(2)+ NaOH`

B

`LiAlH_(4)`

C

`Sn+ HCl`

D

`Na+ C_(2)H_(5)OH`

Text Solution

Verified by Experts

The correct Answer is:
B
Reduction with `LiAlH_(4)` converts `-CONH_(2)` to `-CH_(2)NH_(2)` (`1^(@)` amines) with same number of carbon atoms. In contrast `Br_(2) + NaOH` will bring about Hofmann bromamide reaction giving `1^(@)` amines with one carbon atom less than the parent amide, e.g. `RCONH_(2) overset(Br_(2)+NaOH)rarr RNH_(2)`
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