Question

The Wittig reaction is a reaction between a carbonyl compound (aldehyde or ketone only) and a species known as a phosphoniumylide. What is the expected final product in the Wittig reaction?

पर्याय

• Alkanes

• Alkenes

• Alkynes

• Amines

Answer 1

Alkenes

Explanation:

\[\begin{array}{cc}
\phantom{.........}\ce{O}\phantom{........}\ce{H}\phantom{....}\ce{H}\phantom{....}\\
\phantom{........}||\phantom{..........}\backslash\phantom{..}/\phantom{....}\\
\ce{\underset{Phosphonium ylide}{(Ph)3 \overset{+}{P} - \overset{-}{C}H2} + C \phantom{..} -> \phantom{...} \overset{C}{\underset{C}{||}} + (Ph3) P = 0}\\
\phantom{........}/\phantom{..}\backslash\phantom{........}/\phantom{..}\backslash\phantom{.....}\\
\phantom{.......}\ce{\underset{\underset{\underset{Ketone}{or}}{Aldehyde}}{\phantom{.}R1\phantom{...}R2}}\phantom{....}\ce{\underset{Alkene}{\phantom{.}R1\phantom{...}R2}}\phantom{....}
\end{array}\]