Question:
What is the IUPAC name of the compound formed when m-cresol is subjected to dinitration?
What is the IUPAC name of the compound formed when m-cresol is subjected to dinitration?
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-OH is the dominant activating group in phenols!
Updated On: Jun 6, 2026
- 3-methyl-4,6-dinitrophenol
- 5-methyl-2,4-dinitrophenol
- 2-methyl-4,6-dinitrophenol
- 4-methyl-2,6-dinitrophenol
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The Correct Option is A
Solution and Explanation
Step 1: Concept
Electrophilic substitution on phenols (ortho/para directing).
Step 2: Meaning
m-cresol ($3$-methylphenol) directs nitration to positions 4 and 6.
Step 3: Analysis
The positions 4 and 6 relative to the -OH group are activated. This results in $4,6$-dinitro-$3$-methylphenol.
Step 4: Conclusion
IUPAC name is 3-methyl-4,6-dinitrophenol.
Final Answer: (A)
Electrophilic substitution on phenols (ortho/para directing).
Step 2: Meaning
m-cresol ($3$-methylphenol) directs nitration to positions 4 and 6.
Step 3: Analysis
The positions 4 and 6 relative to the -OH group are activated. This results in $4,6$-dinitro-$3$-methylphenol.
Step 4: Conclusion
IUPAC name is 3-methyl-4,6-dinitrophenol.
Final Answer: (A)
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