cycloalkanes

cycloalkanes - substituted carbons have the lowest numbers...

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Parent Chain Propane Cyclopropane cyclopropyl Parent Chain Parent Chain Butane Cyclobutane Cyclobutyl Parent Chain Pentane Cyclopentane Hexane Heptane Parent Chain Cycloheptane Cycloheptyl Cyclohexyl Cyclopentyl Cyclohexane Parent Chain Parent Chain Parent Chain Octane Cyclooctane Cyclooctyl Nonane Cyclononane Cyclononyl Decane Cyclodecane Cyclodecyl Cycloalkanes
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Naming Cycloalkanes General Formula: C n H (2n) 1. Parent Chain a. Use the cycloalkane as the parent chain if it has a greater number of carbons than any alkyl substituent. b If an alkyl chain off the cycloalkane has a greater number of carbons, then use the alkyl chain as the parent and the cycloalkane as a cycloalkyl- substituent. CH 3 Methylcyclopentane 2-Cyclopropylbutane 2. Numbering the Cycloalkane a When numbering the carbons of a cycloalkane, start with a substituted carbon so that the
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Unformatted text preview: substituted carbons have the lowest numbers (sum). CH 3 CH 3 1 2 3 4 5 6 CH 3 CH 3 1 2 3 4 5 6 1,3-Dimethylcyclohexane -not-1,5-Dimethylcyclohexane CH 3 1 2 3 4 5 6 CH 3 1 2 3 4 5 6 CH 3 CH 3 CH 3 CH 3 1,2,4-Trimethylcyclohexane (1 + 2 + 4 = 7)-not-1,3,4-Trimethylcyclohexane (1 +3 + 4 = 8) b. When two or more different substituents are present, number according to alphabetical order. 1 2 1 2 1-Ethyl-2-methylcyclohexane-not-2-Ethyl-1-methylcyclohexane 3. Halogen Substituents Halogen substituents are treated exactly like alkyl groups:-F fluoro--Cl chloro--Br bromo--I iodo-CH 3 Cl 1-Chloro-2-methylcyclobutane...
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This note was uploaded on 03/11/2012 for the course CHEM 220A taught by Professor Sulikowski during the Fall '08 term at Vanderbilt.

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cycloalkanes - substituted carbons have the lowest numbers...

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