nomenclature-of-alkanes-using-iupac-or-systematic-names

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CHM207 (ORGANIC CHEMISTRY) NOMENCLATURE OF ALKANES USING IUPAC OR SYSTEMATIC NAMES The IUPAC system uses the longest chain of carbon atoms as the main chain, which is numbered to give the locations of side chains. Four rules in naming the alkanes: RULE 1: THE MAIN CHAIN (PARENT COMPOUND) The first rule of nomenclature gives the base name of the compound: Find the longest continuous chain of carbon atoms, and use the name of this chain as the base name of the compound. For example, the longest chain of carbon atoms in the following compound contains six carbons, so the compound is named as a hexane derivative. The groups attached to the main chain are called substituents because they are substituted (in place of a hydrogen atom) on the main chain. When there are two longest chains of equal length, use the chain with the greater number of substituents as the main chain. For example: RULE 2: NUMBERING THE MAIN CHAIN 1 WRONG Seven-carbon chain, but only three substituents CORRECT Seven-carbon chain, four substituents
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CHM207 (ORGANIC CHEMISTRY)
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