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

Difficult
art

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