નીચેની પ્રક્રિયામાં $B, X$ અનુક્રમે શું છે ?

$\begin{gathered} {C_2}{H_5}MgBr\,\,\xrightarrow{{ClCN}}\,\mathop {{C_2}{H_5}}\limits_{(a)} CN\,\xrightarrow{{{H_3}O{\,^ + }}}\,\,B \hfill \\ C{H_3}COC{H_3}\,\mathop {\xrightarrow[{NaOH}]{}}\limits^{{I_2}} \,X\,\,\mathop + \limits_{} \,\,CH{I_3}\,\mathop {\xrightarrow{{Ag}}}\limits_{} \,\,\,Y\, \hfill \\ \,{C_6}{H_5}N{H_2}\,\,\mathop {\xrightarrow[{HCL}]{}}\limits^{NaN{O_2}} \,\,P\,\,\,\xrightarrow{{CuCN}}\,\,Q\,\,\,\xrightarrow{{ + 4H}}\,\,R \hfill \\ \end{gathered} $

Question

નીચેની પ્રક્રિયામાં $B, X$ અનુક્રમે શું છે ?

$\begin{gathered} {C_2}{H_5}MgBr\,\,\xrightarrow{{ClCN}}\,\mathop {{C_2}{H_5}}\limits_{(a)} CN\,\xrightarrow{{{H_3}O{\,^ + }}}\,\,B \hfill \\ C{H_3}COC{H_3}\,\mathop {\xrightarrow[{NaOH}]{}}\limits^{{I_2}} \,X\,\,\mathop + \limits_{} \,\,CH{I_3}\,\mathop {\xrightarrow{{Ag}}}\limits_{} \,\,\,Y\, \hfill \\ \,{C_6}{H_5}N{H_2}\,\,\mathop {\xrightarrow[{HCL}]{}}\limits^{NaN{O_2}} \,\,P\,\,\,\xrightarrow{{CuCN}}\,\,Q\,\,\,\xrightarrow{{ + 4H}}\,\,R \hfill \\ \end{gathered} $

A$C_2H_5COOH, C_2H_5COOH$
B$C_2H_5COOH, CH_3I$
C$C_2H_5CH_2NH_2, CH_3I$
D$C_2H_5COOH, C_2H_5I$

Medium

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Solution

a
$\,{{C}_{2}}{{H}_{5}}MgBr\,\,\xrightarrow{ClCN}\,\underset{(A)}{\mathop{{{C}_{2}}{{H}_{5}}}}\,CN\,\xrightarrow{{{H}_{2}}{{O}^{+}}}\,{{C}_{2}}\underset{(B)}{\mathop{{{H}_{5}}}}\,COOH$

$C{{H}_{3}}\,-\,\,COC{{H}_{3}}\,\overset{{{I}_{2}}}{\mathop{\xrightarrow[NaOH]{}}}\,\,C{{H}_{3}}COOH\,\,\underset{(X)}{\mathop{+}}\,\,\,CH{{I}_{3}}\,\underset{\Delta }{\mathop{\xrightarrow{Ag}}}\,\,\,HC\,\,\underset{(y)}{\mathop{\equiv \,\,C}}\,\,-\,\,H$

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