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JEE Main 202226 JuneEvening Shift

Exam: JEE Main
Year: 2022
Date: 26 June
Shift: Evening Shift
Subject: Chemistry
Chapter: Aldehydes and Ketones

JEE Main 2022 · 26 June · Evening Shift · Chemistry · Aldehydes and Ketones

Toluene can be easily converted into benzaldehyde by which of the...

Toluene can be easily converted into benzaldehyde by which of the following reagents?

Toluene can be easily converted into benzaldehyde by which of the following reagents?

Options

A ${CrO}_{3}$ /acetic acid, ${H}_{3}{O}^{+}$
B ${CrO}_{3}$ /acetic anhydride, ${H}_{3}{O}^{+}$
C ${KMnO}_{4} / HCl, {H}_{3}{O}^{+}$
D $CO, HCl, Anhyd . {AlCl}_{3}$

Correct answer

B. ${CrO}_{3}$ /acetic anhydride, ${H}_{3}{O}^{+}$

Step-by-step solution

Toluene is oxidised to benzaldehyde in presence of ${CrO}_{3}$ /acetic anhydride, ${H}_{3}{O}^{+}$

Toluene is converted to benzylidene diacetate and hydrolysis reaction of benzylidene diacetate gives benzaldehyde.

Toluene can be easily converted into benzaldehyde by which of the following reagents?

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