The value of x in compound D is — Solution | JEE Chemistry

NVAHardJEE 2023Aldehydes & Ketones

Reaction scheme showing an aromatic compound with ethoxy substituent and CH2CHO side chain converted through A and B to D using NH4Cl/KCN, H2SO4/H+, concentrated HNO3/H2SO4, acetic anhydride, ethanol with heat, H2 with Pd/C, HNO2, and NaI.

The value of $x$ in compound $D$ is

Answer

Correct answer:36

Step-by-step solution

the solution unavailable for this question

Given: The question asks for the value of $x$ in compound $D$ .

Find: The value of $x$ .

The solution is unrelated to this question. It discusses mass percentage of sugar solutions and concludes $36$ , while the question shown is an organic reaction sequence. Therefore, the working for this specific question could not be extracted from the solution.

Using the available answer value from the source, the final answer is $36$ .

Common mistakes

Counting atoms from the starting compound directly in $D$ is incorrect because several reaction steps change the functional groups. Track the transformation at each step before computing the molecular formula.
Ignoring the effect of nitration conditions is wrong because concentrated $\text{HNO}_3/\text{H}_2\text{SO}_4$ with $2$ equivalents can introduce more than one nitro group. Account for the stated equivalents carefully.
Missing the purpose of diazotization followed by $\text{NaI}$ leads to an incorrect halogen substitution pattern. Identify which amino group is converted and then replaced by iodine.

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