CBSE 2023 · Region 4 · Set 2 · Q24 · 2 marks
Which of the following is an appropriate set of reactants for the preparation of $\displaystyle 1$-methoxy-$\displaystyle 4$-nitrobenzene and why ?(a)
(b)
Which of the following is an appropriate set of reactants for the preparation of $\displaystyle 1$-methoxy-$\displaystyle 4$-nitrobenzene and why ?
(a)
(b)
Marking-scheme solution
<smiles>O=[N+]([O-])C1C=C[C+]C([O][AlH2])=C1</smiles>
Because in (a) alkyl halide is $\displaystyle 1$° while in (b) p-nitrobromobenzene is less reactive towards nucleophilic substitution with \(\displaystyle \mathrm{CH}_{3} \mathrm{ONa}\) due to the formation of partial double bond between C and Br.
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CBSE Class 12 Chemistry past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.