What is the IUPAC name for the molecule shown? Enter the IUPAC name for the molecule
The Correct Answer and Explanation is :
The molecule depicted in the provided image is 1,2-dimethylcyclohexane.
Structure Analysis:
- Cyclohexane Ring: The core structure is a six-membered carbon ring, characteristic of cyclohexane.
- Methyl Substituents: There are two methyl groups (-CH₃) attached to the cyclohexane ring.
IUPAC Nomenclature:
- Parent Chain Identification: The longest continuous carbon chain is the cyclohexane ring, serving as the parent structure.
- Substituent Identification: The two methyl groups are identified as substituents.
- Numbering the Ring: The ring is numbered to give the substituents the lowest possible locants. In this case, numbering the ring starting from one of the methyl groups results in the substituents being on positions 1 and 2.
- Assembling the Name: The name is constructed by placing the locants and names of the substituents before the parent name, resulting in “1,2-dimethylcyclohexane.”
Explanation:
In IUPAC nomenclature, the goal is to assign the lowest possible locants to the substituents to ensure clarity and consistency. By numbering the cyclohexane ring starting from one of the methyl groups, both substituents are assigned the lowest possible locants, leading to the name “1,2-dimethylcyclohexane.”
This systematic approach ensures that the structure of the molecule can be accurately deduced from its name, facilitating clear communication in chemical literature and discussions.