Question

Name the products of the following reactions.
(I) $C_6{H}_6$ reacts with methyl chloride in presence of $AlC{l}_3$.
(II) $C_6{H}_6$ reacts with acetyl chloride in presence of $AlC{l}_3$.
(III) $C_6{H}_6$ reacts with fuming nitric acid in presence of conc.$H_{2}S{O}_4$.
(IV) $C_6{H}_6$ is catalytically hydrogenated.

• A. (I) - Chloro-methane, (II) - Toluene, (III)- Nitro-benzene, (IV) n-Hexane
• B. (I) - Methyl-benzene, (II) - Chloro-benzene, (III)- Phenyl nitrite, (IV) Trimethyl benzene
• C. (I) - Benzyl chloride, (II) - Trimethyl benzene, (III)- Trinitrobenzene, (IV) Toluene
• D. (I) - Toluene, (II) -Acetophenone, (III)- Nitrobenzene, (IV) Cyclohexane

Answer 1

Answer: (D)

(I) - Toluene, (II) -Acetophenone, (III)- Nitrobenzene, (IV) Cyclohexane

(I) The reaction is known as Freidel-crafts reaction.

$C_6{H}_6+C{H}_{3}Cl\stackrel{Al{Cl}_3}{\to }\underset{Toluene}{C_6{H}_5-C{H}_3}$

(II) The reaction is an exmple of Friedel-crafts Acylation.

$C_6{H}_6+C{H}_3-COCl\stackrel{Al{Cl}_3}{\to }\underset{Acetophenone}{C_6{H}_5-COC{H}_3}$

(III) The reaction is known as nitration of benzene.

$C_6{H}_6+\underset{fuming}{HN{O}_3}\stackrel{\text{conc.}{H}_{2}S{O}_4}{\to }\underset{Trinitrobenzene}{C_6{H}_5-N{O}_2}$

(IV) Hydrogenation of benzene

$C_6{H}_6+H_2\stackrel{catalyst}{\to }\underset{Cyclohexane}{C_6{H}_{12}}$

Hence, $D$ is correct answer.