Q53 / 180 · AIIMS 2001 · Chemistry

In the following reaction order, $B$ is Figure

  • Correct answer
    A
    $\mathrm{CH}_2=\mathrm{CH}-\mathrm{COOH}$
  • B
    Figure
  • C
    $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{COBr}$
  • D
    $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}$

Solution

Figure
$\mathrm{P}+\mathrm{Br}_2$ is brominating agent that brominates the $\alpha$-position. The product then undergo dehydrohalogenation in the presence of alcoholic potassium hydroxide.

Hence, the correct answer is option: 'A'.

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