Question

IUPAC names of the given compounds (I) and (II) are respectively

• A. 5-Phenyl-3-nitrobutane; 2-ethyl-2-methyl-1-propylcyclohexane
• B. 2-Nitro-1-phenylbutane; 2-ethyl-2-methyl-1-propylcyclohexane
• C. 2-Nitro-1-phenylbutane; 1-ethyl-1-methyl-2-propylcyclohexane
• D. 3-Nitro-5-phenylbutane; 2-ethyl-2-methyl-1-propylcyclohexane

Hint:

When naming compounds, always follow the order of precedence for functional groups and the number for the lowest substituent.

Answer 1

The Correct Option is A

For compound I, the correct IUPAC name is 5-Phenyl-3-nitrobutane, where the nitro group is at the 3-position, and the phenyl group is at the 5-position.
For compound II, the IUPAC name is 2-ethyl-2-methyl-1-propylcyclohexane, following the rules for substituent naming.