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Question
Starting from CH3MgI, How will you prepare the following?
Acetic acid
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Solution
Solid carbon dioxide reacts with methyl magnesium iodide to form an additional product which on hydrolysis yields acetic acid.
\[\begin{array}{cc}
\phantom{....................................}\ce{O}\phantom{......................................}\ce{I}\\
\phantom{...................................}||\phantom{.....................................}/\\
\ce{O = C = O + CH3MgI -> CH3 - C - OMgI ->[H+/H2O] CH3 - C - OH + Mg}\\
\phantom{............................................................}||\phantom{...........}\backslash\\
\phantom{............................................................}\ce{\underset{\text{Acetic acid}}{O}}\phantom{........}\ce{OH}
\end{array}\]
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