Question

What is the IUPAC name of phloroglucinol?

• A. 1,2,3-Trihydroxybenzene
• B. 1,3,5-Trihydroxybenzene
• C. 2,4,6-Trihydroxybenzene
• D. 1,2,4-Trihydroxybenzene

Hint:

When naming aromatic compounds with multiple functional groups, remember to use the correct numbering to indicate the positions of the substituents on the benzene ring.

Answer 1

The Correct Option is B

Phloroglucinol is a benzene derivative with three hydroxyl groups (-OH) attached at positions 1, 3, and 5 of the benzene ring. The IUPAC name is 1,3,5-trihydroxybenzene. This name reflects the positions of the hydroxyl groups on the benzene ring. - Option (A) is incorrect because it does not correspond to the correct positions of the hydroxyl groups.
- Option (C) is incorrect because it corresponds to a different compound with hydroxyl groups at positions 2, 4, and 6.
- Option (D) is incorrect because the positions of the hydroxyl groups do not match the correct structure of phloroglucinol. Therefore, the correct answer is option (B).