Question

Which of the following IUPAC names indicates Homocyclic compound? (A) Cyclohexane- 1,2 -dicarboxylic acid (B) Cyclohexane- 1,2 -dicarboxylic anhydride (C) Benzene carbonyl chloride (D) Cyclopent-3-en-1-ol

Short answer

All the given IUPAC names (A, B, C, and D) indicate homocyclic compounds.

Step-by-step solution

Option A: Cyclohexane- 1,2 -dicarboxylic acid

: The name "cyclohexane-1,2-dicarboxylic acid" refers to a cyclohexane ring with carboxylic acid groups attached at the 1 and 2 positions. The entire ring consists of carbon atoms, making it a homocyclic compound.

Option B: Cyclohexane- 1,2 -dicarboxylic anhydride

: The name "cyclohexane-1,2-dicarboxylic anhydride" refers to a cyclohexane ring with carboxylic anhydride functional groups at positions 1 and 2. This compound is again homocyclic, as all the atoms in the ring are carbon atoms.

Option C: Benzene carbonyl chloride

: The name "benzene carbonyl chloride" refers to a benzene ring with a carbonyl chloride functional group attached to one of the carbon atoms. This compound is also homocyclic, as the benzene ring consists entirely of carbon atoms.

Option D: Cyclopent-3-en-1-ol

: The name "cyclopent-3-en-1-ol" refers to a cyclopentene ring with a hydroxyl (OH) group attached at position 1. The ring structure is made up entirely of carbon atoms, making this compound homocyclic as well. To conclude, all the given IUPAC names (A, B, C, and D) indicate homocyclic compounds.