Question

$X$ and $Y$ in the below reaction are ......... and .......... respectively
$C_6H_5 - CO_2H + X \ce{->[{\text{heat}}]} C_6H_5 - COCl \ce{->[{H_2,Pd/BaSO_4}][{\text{Quinoline}}]}$

• A. $SOCl_2$ and $C_6H_5CHO $
• B. $(COCl)_2 $ and $C_6H_5CH_3$
• C. $SOCl_2 $ and $C_6H_5CH_3$
• D. $(COCl)_2 $ and $C_6H_5CH_2 \, OH$
• E. $SOCl_2$ and $C_6H_5CH_2Cl$

Answer 1

Answer: (A)

$C _{6} H _{5} CO _{2} H + \underset{(X)}{SOCl _{2}} \longrightarrow $

$C_6H_5 - COCl + \ce{->[{H_2,Pd/BaSO_4}][{\text{Quinoline}}]} \underset{\underset{(Y)}{\text{(Roseumund reduction)}}}{C_6H_5CHO}$

$\therefore ( X )$ and $( Y )$ are $SOCl _{2}$ and $C _{6} H _{5} CHO$ respectively.