Quiz - Chemistry Benzene Substituents | Chemistry of Benzene Substituents
Which of the following types of reactions corresponds to the reaction between toluene and Br2 under photolytic conditions?
Electrophilic addition
Electrophilic substitution
Radical addition
Radical substitution
Radical process via an initiation step to activate Br2 then propagation steps. A hydrogen atom is substituted by a bromine
Which of the following statements about the reactivity of toluene is correct?
Oxidation of toluene with aqueous KMnO4 gives benzoic acid
Reaction of toluene with Br2 in the presence of FeBr3 gives 2- and 4-bromotoluene
The methyl substituent is relatively acidic (pKa ~ 41) and can be deprotonated with a strong base
All of the above
Which of the following types of reactions corresponds to the reaction between bromobenzene and NaNH2 / NH3?
Nucleophilic aromatic substitution
Electrophilic aromatic substitution
Addition-elimination
Radical substitution
Nucleophilic aromatic substitution through benzyne intermediate:
Which of the following statements about phenol is correct?
PhOH behaves as a typical alcohol
PhOH reacts with NaOH to give sodium phenoxide
A keto-enol equilibrium exists with PhOH and the keto form is favored
All of the above
There is a keto-enol equilibrium with phenol but the enol form is favored by aromaticity. The proton of the hydroxy function is acidic because the corresponding anion is stabilized by resonance. NaOH reacts with phenol to give sodium phenoxide
Which of the following statements about aniline is incorrect?
Aniline is a primary amine
Reaction of PhNH2 with MeCOCl gives the amide PhNHCOMe
Treatment of PhNH2 with NaNO2 and aqueous HCl gives the diazonium cation PhN2+
None of the above
Which of the following statements about the diazonium cation PhN2+ is correct?
Coupling of PhN2+ with phenol occurs with loss of N2
During the Sandmeyer reaction, PhN2+ reacts with NaCN to give cyanobenzene
PhN2+ is hydrolysed in water to phenol
All of the above
Hydrolysis of arenediazonium salts:
