Identify ' Y ' in the following reaction. {CH}₃ {Br} {{KcN}} {X} {{Na}₂ / C₂ {H}₅ {OH}} {Y}

Correct Answer is : CH3−CH2−NH2{CH}₃-{CH}₂-{NH}₂CH3−CH2−NH2

Correct Answer is : CH3−CH2−NH2{CH}₃-{CH}₂-{NH}₂CH3−CH2−NH2

Test Index

MHTCET 16 May 2024 Shift 2 Paper

Question : 55 of 150

Marks: +1, -0

Identify '

Y

\mathrm{CH}_{3} \mathrm{Br} \xrightarrow{\mathrm{KcN}} \mathrm{X} \xrightarrow{\mathrm{Na}_{2} / C_{2} \mathrm{H}_{5} \mathrm{OH}} \mathrm{Y}

Solution:

Concept:

Alkyl cyanides on reduction give primary amines.

Explanation:

\mathrm{CH}_3\mathrm{Br}

reacts with alcoholic

\mathrm{KCN}

to form methyl cyanide,

\mathrm{CH}_3\mathrm{CN}

So,

\mathrm{X}

\mathrm{CH}_3\mathrm{CN}

Then,

\mathrm{CH}_3\mathrm{CN}

is reduced using

\mathrm{Na} / \mathrm{C}_2\mathrm{H}_5\mathrm{OH}

Reduction of a nitrile (

-\mathrm{C}\equiv\mathrm{N}

) gives a primary amine (

-\mathrm{CH}_2-\mathrm{NH}_2

Therefore,

\mathrm{Y}

\mathrm{CH}_3\mathrm{CH}_2\mathrm{NH}_2

Answer:

\mathrm{Y} = \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{NH}_2

Correct option: A.

Go to Question:

Prev Question

Next Question