Explanation:

$\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2} - OH} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - OH\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2} - OH} 
\end{array}$  $\xrightarrow[{ - \,3\,{H_2}O}]{{3HI}}$ $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2} - I} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - I\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2} - I} 
\end{array}$  $\xrightarrow[{ - \,{I_2}}]{}$ $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2}\,\,\,\,\,\,\,\,} \\ 
  {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH\,\,\,\,\,\,\,\,\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {\,C{H_2} - I} 
\end{array}$  $\xrightarrow{{HI}}$ $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_3}\,\,\,\,\,\,\,\,} \\ 
  {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - I\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2} - I} 
\end{array}$  $\xrightarrow[{ - \,{I_2}}]{}$  $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {\,C{H_3}\,} \\ 
  {|\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH\,\,\,} \\ 
  {||\,\,\,\,\,\,\,} \\ 
  {\,C{H_2}\,} 
\end{array}$

Explanation:

\(HOOC - COOH\mathop {\xrightarrow{{{\text{Glycerol}}}}}\limits_{{\text{Decarboxylation}}} HCOOH + C{O_2}\)
\(HCOOH + \) फेहलिंग विलयन \( \to \mathop {C{u_2}O}\limits_{{\text{Red}}\,{\text{ppt}}{\text{.}}}  + C{O_2} + {H_2}O\)

Explanation:

A base-promoted carboxylation of phenols that allows the synthesis of salicylic acid derivatives.

Explanation:

Explanation:

(b) $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {\,\,C{H_2} - OH} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - OH\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {\,\,C{H_2} - OH} 
\end{array}\mathop {\xrightarrow{{{\text{conc}}{\text{.}}}}}\limits_{{H_2}S{O_4}} $ $\mathop {\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2}} \\ 
  {||\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH} \\ 
  {|\,\,\,\,\,\,} \\ 
  {\,\,CHO} 
\end{array}}\limits_{Acrolein}  + 2{H_2}O$

Explanation:

$\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2} - OH} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - OH\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2} - OH} 
\end{array}$  $\xrightarrow[{ - \,3\,{H_2}O}]{{3HI}}$ $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2} - I} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - I\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2} - I} 
\end{array}$  $\xrightarrow[{ - \,{I_2}}]{}$ $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2}\,\,\,\,\,\,\,\,} \\ 
  {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH\,\,\,\,\,\,\,\,\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {\,C{H_2} - I} 
\end{array}$  $\xrightarrow{{HI}}$ $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_3}\,\,\,\,\,\,\,\,} \\ 
  {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - I\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2} - I} 
\end{array}$  $\xrightarrow[{ - \,{I_2}}]{}$  $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {\,C{H_3}\,} \\ 
  {|\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH\,\,\,} \\ 
  {||\,\,\,\,\,\,\,} \\ 
  {\,C{H_2}\,} 
\end{array}$

Explanation:

\(HOOC - COOH\mathop {\xrightarrow{{{\text{Glycerol}}}}}\limits_{{\text{Decarboxylation}}} HCOOH + C{O_2}\)
\(HCOOH + \) फेहलिंग विलयन \( \to \mathop {C{u_2}O}\limits_{{\text{Red}}\,{\text{ppt}}{\text{.}}}  + C{O_2} + {H_2}O\)

Explanation:

A base-promoted carboxylation of phenols that allows the synthesis of salicylic acid derivatives.

Explanation:

Explanation:

(b) $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {\,\,C{H_2} - OH} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - OH\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {\,\,C{H_2} - OH} 
\end{array}\mathop {\xrightarrow{{{\text{conc}}{\text{.}}}}}\limits_{{H_2}S{O_4}} $ $\mathop {\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2}} \\ 
  {||\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH} \\ 
  {|\,\,\,\,\,\,} \\ 
  {\,\,CHO} 
\end{array}}\limits_{Acrolein}  + 2{H_2}O$

Explanation:

$\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2} - OH} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - OH\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2} - OH} 
\end{array}$  $\xrightarrow[{ - \,3\,{H_2}O}]{{3HI}}$ $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2} - I} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - I\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2} - I} 
\end{array}$  $\xrightarrow[{ - \,{I_2}}]{}$ $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2}\,\,\,\,\,\,\,\,} \\ 
  {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH\,\,\,\,\,\,\,\,\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {\,C{H_2} - I} 
\end{array}$  $\xrightarrow{{HI}}$ $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_3}\,\,\,\,\,\,\,\,} \\ 
  {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - I\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2} - I} 
\end{array}$  $\xrightarrow[{ - \,{I_2}}]{}$  $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {\,C{H_3}\,} \\ 
  {|\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH\,\,\,} \\ 
  {||\,\,\,\,\,\,\,} \\ 
  {\,C{H_2}\,} 
\end{array}$

Explanation:

\(HOOC - COOH\mathop {\xrightarrow{{{\text{Glycerol}}}}}\limits_{{\text{Decarboxylation}}} HCOOH + C{O_2}\)
\(HCOOH + \) फेहलिंग विलयन \( \to \mathop {C{u_2}O}\limits_{{\text{Red}}\,{\text{ppt}}{\text{.}}}  + C{O_2} + {H_2}O\)

Explanation:

A base-promoted carboxylation of phenols that allows the synthesis of salicylic acid derivatives.

Explanation:

Explanation:

(b) $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {\,\,C{H_2} - OH} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - OH\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {\,\,C{H_2} - OH} 
\end{array}\mathop {\xrightarrow{{{\text{conc}}{\text{.}}}}}\limits_{{H_2}S{O_4}} $ $\mathop {\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2}} \\ 
  {||\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH} \\ 
  {|\,\,\,\,\,\,} \\ 
  {\,\,CHO} 
\end{array}}\limits_{Acrolein}  + 2{H_2}O$

Explanation:

$\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2} - OH} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - OH\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2} - OH} 
\end{array}$  $\xrightarrow[{ - \,3\,{H_2}O}]{{3HI}}$ $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2} - I} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - I\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2} - I} 
\end{array}$  $\xrightarrow[{ - \,{I_2}}]{}$ $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2}\,\,\,\,\,\,\,\,} \\ 
  {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH\,\,\,\,\,\,\,\,\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {\,C{H_2} - I} 
\end{array}$  $\xrightarrow{{HI}}$ $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_3}\,\,\,\,\,\,\,\,} \\ 
  {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - I\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2} - I} 
\end{array}$  $\xrightarrow[{ - \,{I_2}}]{}$  $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {\,C{H_3}\,} \\ 
  {|\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH\,\,\,} \\ 
  {||\,\,\,\,\,\,\,} \\ 
  {\,C{H_2}\,} 
\end{array}$

Explanation:

\(HOOC - COOH\mathop {\xrightarrow{{{\text{Glycerol}}}}}\limits_{{\text{Decarboxylation}}} HCOOH + C{O_2}\)
\(HCOOH + \) फेहलिंग विलयन \( \to \mathop {C{u_2}O}\limits_{{\text{Red}}\,{\text{ppt}}{\text{.}}}  + C{O_2} + {H_2}O\)

Explanation:

A base-promoted carboxylation of phenols that allows the synthesis of salicylic acid derivatives.

Explanation:

Explanation:

(b) $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {\,\,C{H_2} - OH} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - OH\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {\,\,C{H_2} - OH} 
\end{array}\mathop {\xrightarrow{{{\text{conc}}{\text{.}}}}}\limits_{{H_2}S{O_4}} $ $\mathop {\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2}} \\ 
  {||\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH} \\ 
  {|\,\,\,\,\,\,} \\ 
  {\,\,CHO} 
\end{array}}\limits_{Acrolein}  + 2{H_2}O$

Explanation:

$\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2} - OH} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - OH\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2} - OH} 
\end{array}$  $\xrightarrow[{ - \,3\,{H_2}O}]{{3HI}}$ $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2} - I} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - I\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2} - I} 
\end{array}$  $\xrightarrow[{ - \,{I_2}}]{}$ $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2}\,\,\,\,\,\,\,\,} \\ 
  {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH\,\,\,\,\,\,\,\,\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {\,C{H_2} - I} 
\end{array}$  $\xrightarrow{{HI}}$ $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_3}\,\,\,\,\,\,\,\,} \\ 
  {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - I\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2} - I} 
\end{array}$  $\xrightarrow[{ - \,{I_2}}]{}$  $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {\,C{H_3}\,} \\ 
  {|\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH\,\,\,} \\ 
  {||\,\,\,\,\,\,\,} \\ 
  {\,C{H_2}\,} 
\end{array}$

Explanation:

\(HOOC - COOH\mathop {\xrightarrow{{{\text{Glycerol}}}}}\limits_{{\text{Decarboxylation}}} HCOOH + C{O_2}\)
\(HCOOH + \) फेहलिंग विलयन \( \to \mathop {C{u_2}O}\limits_{{\text{Red}}\,{\text{ppt}}{\text{.}}}  + C{O_2} + {H_2}O\)

Explanation:

A base-promoted carboxylation of phenols that allows the synthesis of salicylic acid derivatives.

Explanation:

Explanation:

(b) $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {\,\,C{H_2} - OH} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH - OH\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {\,\,C{H_2} - OH} 
\end{array}\mathop {\xrightarrow{{{\text{conc}}{\text{.}}}}}\limits_{{H_2}S{O_4}} $ $\mathop {\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2}} \\ 
  {||\,\,\,\,\,\,} 
\end{array}} \\ 
  {CH} \\ 
  {|\,\,\,\,\,\,} \\ 
  {\,\,CHO} 
\end{array}}\limits_{Acrolein}  + 2{H_2}O$