Alky1 cyanides are reduced to primary am...

Alky1 cyanides are reduced to primary amines by

hydrogen and a catalyst

lithium aluminium hydride

sodiunm and ethanol

all of these

Text Solution

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The correct Answer is:

Complete reduction of cyanides to primary amines can be achieved by any of these reducing agents
`R-CN overset([H])rarrR-CH_(2)NH_(2)`
Note that partial rduction of cyanides gives aldehydes.

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Aliphatic nitroalkanes are reduced to primary amines by .

catalytic hydrogenation

lithium aluminium hydride

metal in acid solution

all of these

Nitro alkanes are reduced to amines by

`Na//Hg`

`Na//`alcohol

`Sn//Hg`

`Sn//conc HCI`

Select the incorrect statement. I. Methyl cyanide is is reduced to methyl amine by LiAlH_4 II. Methyl isocyanide is hydrolysed to methyl amine III. Homologated 1@ amine is obtained in the process R – Br overset (NaCN) rarr overset (LiAlH_4) rarr

Only I

Only II

I and III

II and III