Question

What are Grignard reagents?

Answer 1

Grignard reagents

• An important class of organometallic compounds discovered by Victor Grignard in $1900$ is alkyl magnesium halide, $\mathrm{RMgX}$, referred as Grignard Reagents.
• Here, $\mathrm{R}$ is an organic group, normally an aryl or alkyl, and $\mathrm{X}$ is a halogen.

Preparation of Grignard reagents

• These reagents are obtained by the reaction of haloalkanes with magnesium metal in dry ether.
• The reaction for the preparation of the Grignard reagent is as follows:-

${\mathrm{CH}}_3{\mathrm{CH}}_2-\mathrm{Br}+\mathrm{Mg}\stackrel{\mathrm{dry}\mathrm{ether}}{\to }{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{MgBr}$