Which among the following methods is used to prepare Grignard reagent?

Which among the following methods is used to prepare Grignard reagent?
  1. Action of magnesium metal on alkyl halide in presence of dry ether
  2. Action of magnesium powder on alkyl halide in aqueous medium
  3. Action of magnesium hydroxide on alkyl halide
  4. Action of $\mathrm{MgCl}_2$ on alkyl halide in presence of dry ether

Solution

$\mathrm{R}-\mathrm{X} \stackrel{\mathrm{Mg} / \mathrm{ether}}{\longrightarrow} \mathrm{R}-\mathrm{MgX}$ Grignard reagent

Asked in: MHT CET 2022 (10 Aug Shift 2)

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