Question

Which of the following can give a Grignard reagent when reacted with magnesium m dry ether?

• A. ${{C}_{2}}{{H}_{6}}$
• B. ${{C}_{2}}{{H}_{5}}Cl$
• C. ${{C}_{2}}{{H}_{5}}OH$
• D. ${{C}_{2}}{{H}_{5}}CN$

Answer 1

Answer: (B)

${{C}_{2}}{{H}_{5}}Cl$

Answer 2

${{\text{C}}_{\text{2}}}{{\text{H}}_{\text{5}}}\text{Cl}$ can give Grignard reagent when reacted with Mg in dry ether. $RX+Mg(dry)\xrightarrow{\text{Dry}\,\text{ether}}RMgX$ ${{C}_{2}}{{H}_{5}}Cl+Mg\underset{\,\,\,\,\,\,\,\,\,\,\,\,\,\text{Ethyl}\,\text{magneslum}\,\text{chloride}}{\mathop{\xrightarrow{\text{Dry}\,\text{ether}}{{C}_{2}}{{H}_{5}}MgCl}}\,$