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Question
Starting from CH3MgI, How will you prepare the following?
Acetic acid
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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