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Which gives a Ketone with a Grignard reagent?

  • Option 1)

    Formaldehyde

  • Option 2)

    Ethyl alcohol

  • Option 3)

    methyl cyanide

  • Option 4)

    methyl iodide

 

Answers (1)

As we learnt in

Ketone formation from nitriles -

Nitrile with Grignard reagent in the presence of ether followed by hydrolysis yields ketone.

- wherein

C_{2}H_{5}CN + C_{6}H_{5}MgBr \rightarrow C_{2}H_{5}C(NMgBr) C_{6}H_{5} \rightarrow C_{2}H_{5}COC_{6}H_{5}

 

 RMgX+CH_{3}CN\rightarrow CH_{3}C(NMgX)R\rightarrow CH_{3}COR


Option 1)

Formaldehyde

Option is incorrect

Option 2)

Ethyl alcohol

Option is incorrect

Option 3)

methyl cyanide

Option is Correct

Option 4)

methyl iodide

Option is incorrect

Posted by

Vakul

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