Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2008

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

    A)  \[{{C}_{2}}{{H}_{6}}\]         

    B)  \[{{C}_{2}}{{H}_{5}}Cl\]

    C)  \[{{C}_{2}}{{H}_{5}}OH\]       

    D)  \[{{C}_{2}}{{H}_{5}}CN\]

    Correct Answer: B

    Solution :

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


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