The end product `(B)` formed in the reaction
`CH_(3)CH_(2)Broverset(AgCN)rarrAunderset(2H_(3)O^(+))overset("1.NaOH Prolonged heat")rarr` is .

Options

A. `CH_(3)CH_(2)NHCH_(3)`
B. `CH_(3)CH_(2)CH_(2)NH_(2)`
C. `CH_(3)CH_(2)NH_(2)`
D. `(CH_(3)CH_(2))_(3)N`

Answer

C

Explanation

Step -1 Alkyl isocyanides (also known as isonitriles or carbylamines) are obtained when we heat an alkyl halide with silver cyanide in aqueous ethanolic solution `A` small amount of cyanide is also formed
`CH_(3)CH_(2)Br underset(-AgBr)overset(AgCN)rarrCH_(3)underset((A))(CH_(2)NC`
Step -2 Alkyl isocyanides are hydrolysed to an amine and formic acid by dilute acids but are not hydrolysed by alkalis But on prolonged heating with an alkali hydrolysis becomes possible.
`CH_(3)CH_(2)NC+2H_(2)Ooverset("acid")rarrCH_(3)underset((B))(CH_(2))NH_(2)+HCO_(2)H` .