MCQ
The conversion of acetophenone to acetanilide is best accomplished by using :
- ✓Backmann rearrangement
- BCurtius rearrangement
- CLossen rearrangement
- DHofmann rearrangement
✓
Answer
Correct option: A.
Backmann rearrangement
a
$\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,|\,} \\
{{C_6}{H_5} - C = O}
\end{array}$ $\xrightarrow[{ - {H_2}O}]{}$$\underset{\begin{smallmatrix}
\text{Acetophenone oxime or} \\
\text{methyl phenyl ketoxime}
\end{smallmatrix}}{\mathop{\begin{matrix}
\,\,\,\,\,C{{H}_{3}} \\
|\, \\
{{C}_{6}}{{H}_{5}}-C=NOH \\
\end{matrix}}}\,$
$\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,|\,} \\
{{C_6}{H_5} - C = O}
\end{array}$ $\xrightarrow[{ - {H_2}O}]{}$$\underset{\begin{smallmatrix}
\text{Acetophenone oxime or} \\
\text{methyl phenyl ketoxime}
\end{smallmatrix}}{\mathop{\begin{matrix}
\,\,\,\,\,C{{H}_{3}} \\
|\, \\
{{C}_{6}}{{H}_{5}}-C=NOH \\
\end{matrix}}}\,$
$\xrightarrow[\begin{subarray}{l}
{\text{Backmann}} \\
{\text{rearrangement}}
\end{subarray} ]{{{H_2}S{O_4}}}{\mkern 1mu} \mathop {{C_6}{H_5}NHCOC{H_3}}\limits_{{\text{Acetanilide}}} {\mkern 1mu} $
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
If $\left[ Cu \left( H _{2} O \right)_{4}\right]^{2+}$ absorbs a light of wavelength $600$ $nm$ for $d - d$ transition, then the value of octahedral crystal field splitting energy for $\left[ Cu \left( H _{2} O \right)_{6}\right]^{2+}$ will be $.....\,\times 10^{-21}\, J$. (Nearest Integer)
→(Given : $h =6.63 \times 10^{-34} \,Js$ and $c =3.08 \times 10^{8} \,ms ^{-1}$ )
The end product $(C)$ is
→Relative lowering of vapour pressure is a colligative property because__________.
The treatment of R3MgX with ethyl formate leads to the formation of:
Which of the following oxides of nitrogen will be the most stable one
The correct order of acidity for the following compounds is
In electroplating, the article to be electroplated serves as
The specific conductance of $0.0025\,M$ acetic acid is $5 \times 10^{-5}\,S\,cm ^{-1}$ at a certain temperature. The dissociation constant of acetic acid is $......\,10^{-7}$. (Nearest integer) Consider limiting molar conductivity of $CH _3 COOH$ as $400\,S\,cm ^2\,mol ^{-1}$
→For any spontaneous reaction, the equilibrium constant, $E _{\text {cell }}^{\circ}$ and $\Delta G$ respectively will be :
→Aniline reacts with alkyl halide to give