Question

Hydrolysis of alkyl isocyanide yields:
A) Primary amine
B) Tertiary Amine
C) Alcohol
D) Aldehyde

Answer 1

Hint: Hydrolysis is a Greek word in which hydro means water and lysis means to release. It is a chemical reaction in which water is used to break down the bond of material.

Complete answer:
Alkyl isocyanide is a substance in which an alkyl (formula \[R - NC\]) group is combined to the Nitrogen of Carbon Nitrogen group. Its IUPAC name is Alkane isonitrile.
Under basic conditions, isocyanides are constant (stable). But they will hydrolyze to form amide if we reveal them to aqueous acid. Isocyanides on hydrolyzation by dilute mineral acids gives formic acid ($HCOOH$) and primary amine. Hydrolyzation of isocyanide takes place only by acids and not by bases because electrophiles are attracted by carbon atoms as negative charge is present on it.
Hydrolysis of \[R - NC\] yields Primary amine. This hydrolysis is done in presence of dilute mineral acid.
$C{H_3}N = C + 2{H_2}O \to {H^ + }C{H_3} - N{H_2} + HCOOH$
Alkyl isocyanides does not undergo alkali hydrolyses.

Thus, the correct answer is option A. i.e., primary amine.

Note: Isocyanides are commonly known as alkyl isocyanides. Suffix is isocyanide. Alkyl isocyanides on reduction by $LiAl{H_4}$ (a strong reducing agent) gives secondary amine. i.e. N methyl amine. For example, methyl isocyanide is reduced to dimethylamine using $LiAl{H_4}$ (lithium aluminium hydride).