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JEE Main 202228 JulyMorning Shift

Exam: JEE Main
Year: 2022
Date: 28 July
Shift: Morning Shift
Subject: Chemistry
Chapter: Hydrocarbons

JEE Main 2022 · 28 July · Morning Shift · Chemistry · Hydrocarbons

Identify the correct statement for the below given transformation.

Identify the correct statement for the below given transformation.

Identify the correct statement for the below given transformation.

Options

A
$A - {CH}_{3}{CH}_{2}CH = CH - {CH}_{3},$
$B - {CH}_{3}{CH}_{2}{CH}_{2}CH = {CH}_{2},$ Saytzeff products
B
$A - {CH}_{3}{CH}_{2}CH = CH - {CH}_{3},$
$B - {CH}_{3}{CH}_{2}{CH}_{2}CH = {CH}_{2},$
Hafmann products
C
$A - {CH}_{3}{CH}_{2}{CH}_{2}CH = {CH}_{2},$
$B - {CH}_{3}{CH}_{2}CH = {CHCH}_{3},$
Hofmann products
D
$A - {CH}_{3}{CH}_{2}{CH}_{2}CH = {CH}_{2},$
$B - {CH}_{3}{CH}_{2}CH = {CHCH}_{3},$
Saytzeff products

Correct answer

C.

$A - {CH}_{3}{CH}_{2}{CH}_{2}CH = {CH}_{2},$

$B - {CH}_{3}{CH}_{2}CH = {CHCH}_{3},$
Hofmann products

Step-by-step solution

The Hofmann rule states that the major alkene product is the least substituted and least stable product when it comes to asymmetrical amines.
So, major product will be pent-1-ene and minor product will be pent-2-ene.

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