AlkaneNomenclature - ADDITIONAL RULES 1) If A Molecule...

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5-isopropyl-2,2,9-trimethylundecane Big Old Hairy Example: ADDITIONAL RULES 1) If A Molecule Contains Two Of The Same Branching Alkyl Groups Use The Prefix d i, If Three Use t r i, If Four Use t e t r a, If Five Use p e n t a, If Six Use h e x a etc. Ex. 2,3,4-trimethylhexane 2) If Structure Has A Ring That Has More Carbon Atoms Than Any Other Open Chain, The Main Chain I s T h e R i n g And Is Named By Adding c y c l o To The Name Of The Alkane With The Same Number Of Carbon Atoms As The Ring. The Rest Is The Same As For Normal Alkane except you need to keep the total numbers as small as possible when numbering. Ex. 1,2-dimethylcyclohexane 3) If More Than One Branch, List Them In Alphabetical Order, NOT Numerical Order. Ex. 5-ethyl-3,4-diisopropyl-7-methyldecane 4) DO NOT Include The Italicized Prefixes n- , sec- , And tert- OR The Mulitplying Prefixes di, tri, tetra, etc. When Alphabetizing Simple Substitutents. All Other Prefixes (iso, neo, etc.) Are Included When Alphabetizing Simple Substituents. No Need To Argue, I Did Not Invent
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This note was uploaded on 09/15/2010 for the course CH 310M taught by Professor Iverson during the Spring '05 term at University of Texas at Austin.

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