Study GuideOrganic Chemistry I–Cyclohydrocarbons1.Cyclohydrocarbons: NomenclatureHow Are Substituted Cycloalkanes Named?Substituted cycloalkanes are named similarly to open-chain or aliphatic alkanes. TheInternationalUnion of Pure and Applied Chemistry (IUPAC)nomenclature rules for substituted cycloalkanesfollow these steps:Step 1: Number the Carbon Atoms in the Ring and Substituent1.Determine the number of carbon atomsin both the ring and the largest substituent.oIf thering has more carbonsthan the substituent, it is named as analkyl-substituted cycloalkane.oIf thesubstituent has more carbonsthan the ring, it is named as acycloalkylalkane.Step 2: Number the Substituents for the Lowest Sum2.If an alkyl-substituted cycloalkane hasmore than one substituent, number the ring so thatthe substituents have thelowest sum of numbers.Preview Mode
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