\(\begin{matrix}
\begin{matrix}
O\,\,\, \,\,\, \\
||\,\,\,\,\,\, \\
\end{matrix}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
Ph-C-N-O-C{{H}_{3}} \\
|\,\,\,\,\, \\
\,C{{H}_{3}} \\
\end{matrix}\) \(\xrightarrow{C{{H}_{3}}MgBr}\) \(\begin{matrix}
O\,\,\, \\
||\,\,\, \\
Ph-C-C{{H}_{3}} \\
\end{matrix}\) \(\xrightarrow{C{{H}_{3}}MgBr}\) \(\begin{matrix}
\begin{matrix}
\overset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\Theta }{\mathop{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O}}\,\overset{\oplus }{\mathop{Mg}}\,Br \\
|\,\,\,\, \\
\end{matrix} \\
Ph-C-C{{H}_{3}} \\
|\,\,\,\,\, \\
C{{H}_{3}} \\
\end{matrix}\) \(\xrightarrow{{{H}^{\oplus }}}\) \(\begin{matrix}
\begin{matrix}
\,\,\,OH \\
| \\
\end{matrix}\,\, \\
Ph-C-C{{H}_{3}} \\
|\,\,\,\, \\
\,C{{H}_{3}} \\
\end{matrix}\)
$\begin{array}{*{20}{c}}
{C{H_3}} \\
|\,\,\,\,\,\, \\
{C{H_{_3}} - C - C{H_2}Br} \\
|\,\,\,\,\,\, \\
H\,\,\,\,
\end{array}\,\xrightarrow[{C{H_3}OH}]{{C{H_3}{O^ - }}}$
$(I)$ Benzylchloride
$(II)$ $p-$ Methoxy benzyl chloride
$(III)$ $p-$ Nitro benzyl chloride