Which of the following species is attacked by benzene in the electrophilic nitration reaction? (a)HNO3 (b)NO2-...

Which of the following species is attacked by benzene in the electrophilic nitration reaction? (a)HNO₃ (b)NO₂^- (c)NO₂⁺ (d) NO⁺
Which of the following is the strongest activating group in electrophilic aromatic substitution reactions? (a) CH₂CH₃ (b) OCH₃ (c)CO₂CH₃ (d) NO₂
In electrophilic aromatic substitution reactions a bromine substituent is (a) a deactivator and a m-director (b) a deactivator and an o,p-director (c) an activator and a m-director (d) an activator and an o,p-director

4. List at least two of the limitations associated with the Friedel-Crafts alkylation reaction

5. Which of the following compounds would most likely be used in the preparation of tertiarybutylbenzene? (a) (CH3)₂CHCOCl (b) (CH₃)₃CCOCl (c)CH₃CH₃CH₃COCl (d) CH₃CH₃COCl

6. Which of the following compounds is least reactive in the nucleophilic aromatic substitution reactions with NaOH? (a)2,4-dinitrochlorobenzene (b)m-nitrochlorobenzene (c)o-nitrochlorobenzene (d)3,5-dinitrochlorobenzene

7. Which mechanism of nucleophilic aromatic substitution reaction proceeds via a benzyne intermediate? (a) addition-elimination mechanism (b)elimination-addition mechanism

8. Which mechanism of nucleophilic aromatic substitution reaction proceeds via a negatively charged Meisenheimer complex? (a) addition-elimination mechanism (b)elimination-addition mechanism

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queen_honey_blossom answered 4 months ago

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