Haloalkanes and Haloarenes
In Friedel craft alkylation of benzene with methyl chloride, the catalyst used is:
The reaction of toluene with chlorine in the presence of ferric chloride gives predominantly:
In presence of $$FeCl_3$$ and in dark, electrophilic substitution on benzene ring by $$Cl^+$$ on at ortho and para positions occurs to give o- and p-chlorotoluene. Since the methyl group activates the ring at ortho and para position more than meta position, the electrophilic substitution occurs mostly at these positions. Again, among these, the para isomer is the major product due to sterric reasons. Hence the answer is (d)
In Friedel craft alkylation of benzene with methyl chloride, the catalyst used is:
Chlorobenzene is formed by reaction of chlorine with benzene in the presence of $$A1C1_3$$.Which of the following species attacks the benzene ring in this reaction?
Chloroform on treatment with phenol in presence of caustic alkali forms salicylaldehyde. This reaction is known as:
Benzene reacts with $$CH_{3}Cl$$ in the presence of anhydrous $$AlCl_{3}$$ to form:
The compound $$C_{7}H_{8}$$ undergoes the following reactions: $$C_{7}H_{8}\xrightarrow {3Cl_{2}/\triangle}A \xrightarrow {Br_{2}/ Fe} B \xrightarrow {Zn/HCl}C$$. The product $$C$$ is:
Among the following, the reaction that proceeds through an electrophilic substitution is:
On commercial scale, phenol is obtained from chlorobenzene. The chlorobenzene needed for the purpose is prepared by:
In which of the following reactions, the correct major product formed?
The product on monobromination of this compound is :
When phenol is treated with excess bromine water, it gives: