Question

Which of the following compounds yields 3-Ethylpentan-3-ol by using ethyl magnesium iodide followed by acid hydrolysis?

पर्याय

• Propanone

• Pentan-2-one

• Butanone

• Pentan-3-one

Answer 1

Pentan-3-one

Explanation:

\[\begin{array}{cc}
\phantom{.............................................................}\ce{C2H5}\phantom{.................................}\ce{C2H5}\phantom{................}\ce{I}\\
\phantom{.............................................................}|\phantom{.....................................}|\phantom{..................}/\\
\ce{H3C - CH2 - C - CH2CH3 + C2H5MgI ->[Dry][ether] [H3C - CH2 - C - CH2CH3] ->[Hydrolysis] H3C - CH2 - C - CH2CH3 + Mg}\\
\phantom{.......................}||\phantom{.............................................}|\phantom{....................................}|\phantom{...................}\backslash\phantom{.......}\\
\phantom{........................}\ce{\underset{Pentan-3-One}{O}}\phantom{.......................................}\ce{OMgI}\phantom{...........................}\ce{\underset{3-Ethylpentan-3-ol}{OH}}\phantom{...........}\ce{OH}\phantom{..........}
\end{array}\]