Aldehydes Ketones Question 95

Question: Which of the following compound gives a ketone with Grignard reagent

[CPMT 1988; MP PET 1997]

Options:

A) Formaldehyde

B) Ethyl alcohol

C) Methyl cyanide

D) Methyl iodide

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Answer:

Correct Answer: C

Solution:

$ CH_3-C\equiv N+C{{\bar{H}}_3}M{g^{+}}Br\to CH_3-\underset{CH_3}{\mathop{\underset{|}{\mathop{C=N}}-}}MgBr $

$ CH_3-CO-CH_3+NH_3+Mg<\begin{matrix} Br \\ OH \\ \end{matrix} $