Question

How will you convert the following ?
Chlorobenzene to D.D.T.

Answer 1

Chlorobenzene reacts with chloral $\left(C{Cl}_{3}CHO\right)$ in presence of concentrated $H_{2}S{O}_4$ to give Dichlorodiphenyltrichloroethane (D.D.T.).

$\underset{\left(\text{Chloral}\right)}{C{Cl}_3-\stackrel{\underset{|}{H}}{C}=O}+\underset{\left(\text{Chlorobenzene}\right)}{2C_6{H}_5-Cl}\underset{-H_{2}O}{\overset{\text{Conc.}{H}_{2}S{O}_4}{\to }}\underset{\left(\text{D.D.T.}\right)}{{Cl}_{3}C-\stackrel{\underset{|}{C_6{H}_{5}Cl}}{CH}-C_6{H}_{5}Cl}$