Question:
What is Y in the given sequence of reactions?
What is Y in the given sequence of reactions?
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Etard reaction converts alkyl benzene into aldehyde, and Wolff-Kishner reduction converts aldehydes into alkanes.
Updated On: Jul 29, 2026
- Fig 1 (Toluene)
- Fig 2 (Aniline)
- Fig 3 (Phenol)
- Fig 4 (Phenylhydroxylamine)
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The Correct Option is A
Solution and Explanation
Step 1: Reaction of toluene with chromyl chloride
Toluene reacts with:
\[
CrO_2Cl_2/CS_2
\]
followed by hydrolysis.
This is:
Etard Reaction
It converts the methyl group into aldehyde.
\[
C_6H_5CH_3 \rightarrow C_6H_5CHO
\]
So,
\[
X=\text{Benzaldehyde}
\]
Step 2: Reaction with hydrazine and KOH Benzaldehyde reacts with: \[ N_2H_4 \] and then \[ KOH/Ethylene\ glycol \] This is: Wolff-Kishner Reduction It converts: \[ -CHO \rightarrow -CH_3 \] Thus: \[ C_6H_5CHO \rightarrow C_6H_5CH_3 \] So, \[ Y=\text{Toluene} \] \[ \boxed{Y=\text{Toluene}} \] Therefore, the correct answer is: \[ \boxed{(A)} \]
Step 2: Reaction with hydrazine and KOH Benzaldehyde reacts with: \[ N_2H_4 \] and then \[ KOH/Ethylene\ glycol \] This is: Wolff-Kishner Reduction It converts: \[ -CHO \rightarrow -CH_3 \] Thus: \[ C_6H_5CHO \rightarrow C_6H_5CH_3 \] So, \[ Y=\text{Toluene} \] \[ \boxed{Y=\text{Toluene}} \] Therefore, the correct answer is: \[ \boxed{(A)} \]
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