4.2 Benzene Reactions Flashcards
does benzene carry nucleophilic addition
no it doesnt
why does benzene not carry out addition reactions
too stable.
due to stable delocalised electron ring.
does benzene carry out electrophilic substitution reactions
yes it does
how does benzene undergo electrophilic substitution
the pi cloud has a (-) charge which attracts electrophiles.
will undergo electrophilic attack
what are the reactants in the nitration of benzene
benzene, conc nitric acid, conc sulfuric acid
what conditions allow the nitration of benzene, and why are they used
temp below 50C
(if above this temp then dinitration can occur)
what is the catalyst used for nitration of benzene
no catalyst
what are the reactants for the halogenation of benzene
benzene, bromine
what is the catalyst used for the halogenation of benzene
Fe/FeBr₃ or Al
what is the product of the nitration of benzene
nitrobenzene
(above 50C = 1,3-dintrobenzene)
what is the product of halogenation of benzene
bromobenzene
what conditions allow the halogenation of benzene
room temperature and out of direct sunlight
what is the name of the reaction of alkylation of benzene
friedel-crafts reaction
what is an alkyl group?
carbon chain (CH3,CH2CH3)
what is the catalyst used during alkylation (friedel crafts reaction) of benzene
AlCl₃
