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Hint: Benzyl chloride$\left( {{C}_{6}}{{H}_{5}}C{{H}_{2}}Cl \right)$ can be prepared from toluene by chlorination with $C{{l}_{2}}$. This is because it is found that in the presence of sunlight, $C{{l}_{2}}$ gives free radicals. This reaction is basically a free radical substitution reaction.
Complete answer:
- We can see that in toluene there is no electrophilic centre, hence oxidation takes place in the presence of sunlight using $C{{l}_{2}}$.
- $S{{O}_{2}}C{{l}_{2}}$ is found to give chlorination, when there is a nucleophilic substitution reaction on an electrophilic centre. But as we know, there is no electrophilic centre in toluene, therefore, chlorination occurs by a controlled free radical mechanism.
- NaOCI Is found to give substitution reaction, and doesn’t give free radical so it will take part in chlorination.
- We can see the chlorination reaction that is, toluene by chlorination with $C{{l}_{2}}$ will give Benzyl chloride as:
- Benzyl chloride is used in large scale in making resins, dyes, lubricants, drugs and cosmetics.
- Hence, we can conclude that the correct option is (c), that is Benzyl chloride$\left( {{C}_{6}}{{H}_{5}}C{{H}_{2}}Cl \right)$ can be prepared from toluene by chlorination with $C{{l}_{2}}$.
Note: - Industrially, Benzyl chloride can be prepared from toluene and chlorine by the gas phase photochemical mechanism. During this reaction HCl is obtained as a side product.
- It is also found that Benzyl chloride has a strong smell, inflammable to skin and can cause tearing of eyes.
Complete answer:
- We can see that in toluene there is no electrophilic centre, hence oxidation takes place in the presence of sunlight using $C{{l}_{2}}$.
- $S{{O}_{2}}C{{l}_{2}}$ is found to give chlorination, when there is a nucleophilic substitution reaction on an electrophilic centre. But as we know, there is no electrophilic centre in toluene, therefore, chlorination occurs by a controlled free radical mechanism.
- NaOCI Is found to give substitution reaction, and doesn’t give free radical so it will take part in chlorination.
- We can see the chlorination reaction that is, toluene by chlorination with $C{{l}_{2}}$ will give Benzyl chloride as:
- Benzyl chloride is used in large scale in making resins, dyes, lubricants, drugs and cosmetics.
- Hence, we can conclude that the correct option is (c), that is Benzyl chloride$\left( {{C}_{6}}{{H}_{5}}C{{H}_{2}}Cl \right)$ can be prepared from toluene by chlorination with $C{{l}_{2}}$.
Note: - Industrially, Benzyl chloride can be prepared from toluene and chlorine by the gas phase photochemical mechanism. During this reaction HCl is obtained as a side product.
- It is also found that Benzyl chloride has a strong smell, inflammable to skin and can cause tearing of eyes.
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