Identify the correct set of reagents or reaction conditions ' \(X\) ' and ' \(Y\) ' in the following set of…

Identify the correct set of reagents or reaction conditions ' \(X\) ' and ' \(Y\) ' in the following set of transformation
  1. \(\mathrm{X}=\) dil.aq. \(\mathrm{NaOH}, 20^{\circ} \mathrm{C}, \quad \mathrm{Y}=\mathrm{Br}_2 / \mathrm{CHCl}_3\)
  2. \(\mathrm{X}=\) conc.alc. \(\mathrm{NaOH}, 80^{\circ} \mathrm{C}, \mathrm{Y}=\mathrm{Br}_2 / \mathrm{CHCl}_3\)
  3. \(\mathrm{X}=\) dil.aq. \(\mathrm{NaOH}, 20^{\circ} \mathrm{C}, \quad \mathrm{Y}=\mathrm{HBr}\) /acetic acid
  4. \(\mathrm{X}=\) conc.alc. \(\mathrm{NaOH}, 80^{\circ} \mathrm{C}, \mathrm{Y}=\mathrm{HBr} /\) acetic acid

Solution

$\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{Br} \xrightarrow{\mathrm{X}=\text { conc.alc. } \mathrm{NaOH}}$ $\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}_2 \xrightarrow{\mathrm{Y} \equiv \mathrm{HBr} / \text { Acetic acid }} \mathrm{CH}_3-\mathrm{CHBr}-\mathrm{CH}_3$

Asked in: JEE Main 2024 (04 Apr Shift 1)

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