IUPAC Naming System for Organic Compounds

What is the IUPAC name of the compound shown below?

(1R,3S)-1,3-dichloro-1-ethyl-3-methylcyclopentane

The IUPAC name of the compound is (1R,3S)-1,3-dichloro-1-ethyl-3-methylcyclopentane

The IUPAC naming system is used to systematically name organic compounds based on their structure and functional groups. In the given compound, there are two substituents attached to a cyclopentane ring: one ethyl group (C2H5) and one methyl group (CH3), both of which are chlorinated (Cl). The numbering of the carbon atoms in the cyclopentane ring begins at the carbon where the chlorinated substituents are attached.

The prefix "1R,3S" indicates the configuration of the chiral centers (stereocenters) in the compound. In this case, the carbon atoms in the cyclopentane ring that carry the substituents are chiral, meaning they have non-superimposable mirror images. The "1R" indicates that the chiral carbon with the chlorine atom and the ethyl group has an R configuration, while the "3S" indicates that the chiral carbon with the chlorine atom and the methyl group has an S configuration. This naming convention follows the Cahn-Ingold-Prelog priority rules.

Overall, the IUPAC name (1R,3S)-1,3-dichloro-1-ethyl-3-methylcyclopentane accurately describes the spatial arrangement of substituents and their configurations in the cyclopentane ring.