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What is the correct order of reactivity towards nucleophilic addition?

Correct answer: D. Benzaldehyde > Acetophenone > Benzophenone

  • A. Benzaldehyde > Benzophenone > Acetophenone
  • B. Benzophenone > Benzaldehyde > Acetophenone
  • C. Acetophenone > Benzaldehyde > Benzophenone
  • D. Benzaldehyde > Acetophenone > Benzophenone

Explanation

The reactivity towards nucleophilic addition is influenced by the electron-withdrawing or electron-donating groups present on the aromatic ring. Benzaldehyde has a more reactive carbonyl group due to the presence of the electron-withdrawing hydrogen atom on the benzene ring, making it the most reactive. Acetophenone has an electron-donating alkyl group, reducing its reactivity compared to benzaldehyde. Benzophenone has two electron-donating alkyl groups, further reducing its reactivity compared to both benzaldehyde and acetophenone. Therefore, the correct order of reactivity towards nucleophilic addition is:Benzaldehyde > Acetophenone > Benzophenone

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About Chemistry of Hydrocarbons

Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.

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