$\begin{array}{*{20}{c}}
{O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Ph - C - OH\xrightarrow[\Delta ]{{N{H_3}}}(A){\mkern 1mu} \xrightarrow[{KOH}]{{B{r_2}}}(B),{\mkern 1mu} }
\end{array}{\mkern 1mu} {\mkern 1mu}$ product $B$ is
- A$\begin{array}{*{20}{c}}
{O\,\,\,} \\
{||\,\,\,} \\
{Ph - C - N{H_2}}
\end{array}$ - B$\begin{array}{*{20}{c}}
{\,\,\,\,O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O\,\,\,} \\
{\,\,\,\,\,||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||\,\,\,\,\,} \\
{Ph - C - O - C - Ph}
\end{array}$ - C
- D