Which of the following reaction does not involve Hoffmann Bromamide degradation ?
A
B
C
D
JEE MAIN 2021, Difficult
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C
c $\Rightarrow$ This reaction does not involve haffmann bromanide degradation.
$\Rightarrow$ Rest all options involve haffmann bromamide degradation during the reaction of $Br _{2}+ NaOH$ with amide.
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$9.3 \mathrm{~g}$ of aniline is subjected to reaction with excess of acetic anhydride to prepare acetanilide. The mass of acetanilide produced if the reaction is _________$100 \%$ completed is $\times 10^{-1} \mathrm{~g}$. (Given molar mass in $\mathrm{g} \mathrm{mol}^{-1} \mathrm{~N}: 14, \mathrm{O}: 16, \mathrm{C}$ : $12, \mathrm{H}: 1)$
Cyclohexylamine when treated with nitrous acid yields $(P)$. On treating $(P)$ with $P C C$ results in $(Q)$. When $(Q)$ is heated with dil. $NaOH$ we get $(R)$ The final product $(R)$ is :