Which of the following has the most acidic hydrogen ?
A.
3 - Hexanone
B.
2, 4 - Hexanedione
C.
2, 5 - Hexanedione
D.
2, 3 - Hexanedione
Answer :
2, 4 - Hexanedione
Solution :
In \[C{{H}_{3}}\overset{\begin{smallmatrix}
O \\
\parallel
\end{smallmatrix}}{\mathop{-C-}}\,C{{H}_{2}}\overset{\begin{smallmatrix}
O \\
\parallel
\end{smallmatrix}}{\mathop{-C-}}\,C{{H}_{2}}-C{{H}_{3}},\] \[-C{{H}_{2}}-\] group is flanked on both sides by electron- withdrawing groups and hence its hydrogens are most acidic. Once a carbanion is formed, it is stabilised due to resonance.
Releted MCQ Question on Organic Chemistry >> General Organic Chemistry
Releted Question 1
The bond order of individual carbon-carbon bonds in
benzene is