Which position will attacked most rapidly by the nitronium ion (NO^+_2) when the

Question

Which position will attacked most rapidly by the nitronium ion (NO^+_2) when the compound undergoes nitration with HNO_3/H_2SO_4? Which description is most applicable to the mechanism of this reaction? It take place in one step with no ionic intermediates. It tekes place in two steps; elimanation then addition. It takes place in two steps; addition, then elimination. It takes place in three steps and involves a carcocation intermediate, For the nitration of bromobenzene with HNO_3/H_2SO_4, which intermediate is used to explain why halogens are ortho/para directors?

Explanation / Answer

6. option D is the correct answer

when you have a two rings with different electron densities electrophilic substitution reaction will takes place at the electron rich ring

in the given compound methyl group is electron donating group where as acetate hroup is electron with drawing group

so electrophilic substitution reaction takes place at the methyl substitution ring and the methyl ortho para directiong group.

7

option C is the correct answer

because it is aromatic nucleophilic substitution reaction

in first step nucleophile will add the then followed by elimination

8

option D is the correct answer

because the obtained +ve charge will get addition resonence structure with the help of Br

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