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nomenclature - hexane 2 Number the ring to give the lowest...

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Nomenclature Supplement CHM 2210 Rules 1. The main chain Find the longest continuous chain of carbons and name according to the number of carbons 2. Numbering Number the longest chain starting at the end closest to the first branch 3. Name the carbon substituents as alkyl groups 4. List the groups in alphabetical order (Use di-, tri-, tetra-, penta-, hexa-, etc for multiple identical substituents; do not count for alphabetizing) CH 3 methyl ethyl propyl isopropyl butyl isobutyl sec -butyl tert -butyl Also: Fluoro-, Chloro-, Bromo-, and Iodo- …and other substituents we will encounter. For cyclic systems 1. Use the prefix cyclo: cyclo
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Unformatted text preview: hexane 2. Number the ring to give the lowest numbers for substituents For branched substituents 1. Number the longest chain and name as parent 2. Begin the numbering at the point of attachment 3. Name as you would above then add the appropriate suffix (-yl for alkyl, etc) and use parentheses to separate out the substituent name from the complete name- see example below 1-ethyl-2-methylcyclohexane Br 1-(1-bromo-1,3-dimethylbutyl)cyclopentane 1 8 4-isopropyl-2,2,3,6-tetramethyloctane # of Carbons name 1 meth 2 eth 3 prop 4 but 5 pent 6 hex 7 hept 8 oct 9 non 10 dec...
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