Which of the following is a characteristic feature of electrophilic aromatic substitution reactions?
Practice Questions
1 question
Q1
Which of the following is a characteristic feature of electrophilic aromatic substitution reactions?
Formation of a carbocation
Formation of a sigma complex
Formation of a free radical
Formation of a carbanion
A characteristic feature of electrophilic aromatic substitution reactions is the formation of a sigma complex (arenium ion) during the reaction.
Questions & Step-by-step Solutions
1 item
Q
Q: Which of the following is a characteristic feature of electrophilic aromatic substitution reactions?
Solution: A characteristic feature of electrophilic aromatic substitution reactions is the formation of a sigma complex (arenium ion) during the reaction.
Steps: 5
Step 1: Understand that electrophilic aromatic substitution is a type of chemical reaction involving aromatic compounds.
Step 2: Recognize that in this reaction, an electrophile (a positively charged species) attacks the aromatic ring.
Step 3: Learn that when the electrophile attacks, it temporarily disrupts the aromaticity of the ring.
Step 4: Identify that this disruption leads to the formation of a sigma complex, also known as an arenium ion.
Step 5: Note that the sigma complex is a key intermediate in the reaction before the aromaticity is restored.
