Question:
Identify the major product formed in the following reaction.
Chlorobenzene \( \xrightarrow[\text{Anhydrous FeCl}_{3}]{\text{Cl}_{2}} \) Product}
Identify the major product formed in the following reaction.
Chlorobenzene \( \xrightarrow[\text{Anhydrous FeCl}_{3}]{\text{Cl}_{2}} \) Product}
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In most electrophilic substitutions of mono-substituted benzenes, the para-isomer is the major product due to minimal steric repulsion.
Updated On: Apr 30, 2026
- o-dichlorobenzene
- m-dichlorobenzene
- 1,3,5-trichlorobenzene
- p-dichlorobenzene
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The Correct Option is D
Solution and Explanation
Step 1: Concept
Chlorine on a benzene ring is ortho/para directing due to the resonance effect.
Step 2: Steric Hindrance
While both ortho and para products are formed, the para position is less sterically hindered than the ortho position.
Step 3: Analysis
In electrophilic substitution (halogenation), the bulky chlorine atoms prefer to stay as far apart as possible.
Step 4: Conclusion
p-dichlorobenzene is the major product.
Final Answer:(D)
Chlorine on a benzene ring is ortho/para directing due to the resonance effect.
Step 2: Steric Hindrance
While both ortho and para products are formed, the para position is less sterically hindered than the ortho position.
Step 3: Analysis
In electrophilic substitution (halogenation), the bulky chlorine atoms prefer to stay as far apart as possible.
Step 4: Conclusion
p-dichlorobenzene is the major product.
Final Answer:(D)
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