Q54 / 160 · JIPMER 2009 · Chemistry
Which of the following can give a Grignard reagent when reacted with magnesium in dry ether ?
- A$\mathrm{C}_2 \mathrm{H}_6$
- Correct answerB$\mathrm{C}_2 \mathrm{H}_5 \mathrm{Cl}$
- C$\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}$
- D$\mathrm{C}_2 \mathrm{H}_5 \mathrm{CN}$
Solution
$\mathrm{C}_2 \mathrm{H}_5 \mathrm{Cl}$ can give Grignard reagent when reacted with Mg in dry ether.
$\begin{aligned}
& R X+\mathrm{Mg} \text { (dry) } \xrightarrow{\text { Dry ether }} R \mathrm{MgX} \\
& \mathrm{C}_2 \mathrm{H}_5 \mathrm{Cl}+\mathrm{Mg} \xrightarrow{\text { Dry ether }}+\underset{\text{ethyl magnesium chloride}} {\mathrm{C}_2 \mathrm{H}_5 \mathrm{MgCl}}\end{aligned}$
Hence, the correct answer is option: 'B'.