$\underset{(A)}{\mathop{\begin{matrix}
\,\,\,\,\,Ph\,\,\,\,C{{H}_{3}} \\
|\,\,\,\,\,\,\,\,\,\,|\,\, \\
Ph-C-C-C{{H}_{3}} \\
|\,\,\,\,\,\,\,\,\,\,|\,\,\, \\
\,OH\,\,\,OH \\
\end{matrix}}}\,+\underset{(B)}{\mathop{\begin{matrix}
\,\,\,\,Ph\,\,\,Et \\
\,\,|\,\,\,\,\,\,\,\,\,| \\
Ph-C-C-Et \\
\,\,|\,\,\,\,\,\,\,\,\,| \\
\,\,\,\,\,OH\,\,OH \\
\end{matrix}}}\,\xrightarrow{{{H}_{2}}S{{O}_{4}}}$

$(p)$ $\begin{matrix}
Ph\,\,\,\,\,O\, \\
|\,\,\,\,\,\,\,\,||\,\, \\
Ph-C-C-C{{H}_{3}} \\
|\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}\,\,\,\,\,\,\,\, \\
\end{matrix}$ $(q)$ $\begin{matrix}
\,Ph\,\,\,\,\,O\, \\
\,\,|\,\,\,\,\,\,\,\,|| \\
Ph-C-C-Et \\
|\,\,\,\,\,\,\,\,\,\, \\
Et\,\,\,\,\,\,\,\,\,\, \\
\end{matrix}$

$(r)$ $\begin{matrix}
\,Ph\,\,\,\,\,O\, \\
|\,\,\,\,\,\,\,\,\,\,||\, \\
Ph-C-C-C{{H}_{3}} \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
Et\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\end{matrix}$ $(s)$ $\begin{matrix}
\,\,\,Ph\,\,\,\,\,O\, \\
\,\,|\,\,\,\,\,\,\,\,|| \\
Ph-C-C-Et \\
|\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}\,\,\,\, \\
\end{matrix}$

જ્યારે $(A)$ અને $(B)$ $H_2SO_4$ સાથે પ્રકિયા કરે છે ત્યારે કઈ નીપજ મળે છે ?

Question

$\underset{(A)}{\mathop{\begin{matrix}
\,\,\,\,\,Ph\,\,\,\,C{{H}_{3}} \\
|\,\,\,\,\,\,\,\,\,\,|\,\, \\
Ph-C-C-C{{H}_{3}} \\
|\,\,\,\,\,\,\,\,\,\,|\,\,\, \\
\,OH\,\,\,OH \\
\end{matrix}}}\,+\underset{(B)}{\mathop{\begin{matrix}
\,\,\,\,Ph\,\,\,Et \\
\,\,|\,\,\,\,\,\,\,\,\,| \\
Ph-C-C-Et \\
\,\,|\,\,\,\,\,\,\,\,\,| \\
\,\,\,\,\,OH\,\,OH \\
\end{matrix}}}\,\xrightarrow{{{H}_{2}}S{{O}_{4}}}$

$(p)$ $\begin{matrix}
Ph\,\,\,\,\,O\, \\
|\,\,\,\,\,\,\,\,||\,\, \\
Ph-C-C-C{{H}_{3}} \\
|\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}\,\,\,\,\,\,\,\, \\
\end{matrix}$ $(q)$ $\begin{matrix}
\,Ph\,\,\,\,\,O\, \\
\,\,|\,\,\,\,\,\,\,\,|| \\
Ph-C-C-Et \\
|\,\,\,\,\,\,\,\,\,\, \\
Et\,\,\,\,\,\,\,\,\,\, \\
\end{matrix}$

$(r)$ $\begin{matrix}
\,Ph\,\,\,\,\,O\, \\
|\,\,\,\,\,\,\,\,\,\,||\, \\
Ph-C-C-C{{H}_{3}} \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
Et\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\end{matrix}$ $(s)$ $\begin{matrix}
\,\,\,Ph\,\,\,\,\,O\, \\
\,\,|\,\,\,\,\,\,\,\,|| \\
Ph-C-C-Et \\
|\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}\,\,\,\, \\
\end{matrix}$

જ્યારે $(A)$ અને $(B)$ $H_2SO_4$ સાથે પ્રકિયા કરે છે ત્યારે કઈ નીપજ મળે છે ?

Diffcult

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Solution

b
$(b)$ Pinacol-Pinacolone rearrangment is an intramolecular process.

$\therefore$ no crossover products are obtained.

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