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Characteristic (Functional) Groups

R-3.1.4 Substituent prefix names for unsaturated/saturated parent hydrides

When derived according to R-3.1.1, R-3.1.2 and R-3.1.3 above, these are formed by replacing the final "e" of the name of the unsaturated/saturated structure by an appropriate suffix given in R-2.5.

Free valence position are preferred to positions of unsaturation denoted by the suffixes "-ene", etc., for low locant numbers. As with substituent prefixes derived from saturated parent hydrides (see R-2.1), the free valences can be at any position on the parent structure. Accordingly, for acyclic unsaturated parent structures, all locants for the free valences, including "1", must be cited.

Examples to R-3.1.4

This HTML reproduction is as close as possible to the published version [see IUPAC, Commission on Nomenclature of Organic Chemistry. A Guide to IUPAC Nomenclature of Organic Compounds (Recommendations 1993), 1993, Blackwell Scientific publications, Copyright 1993 IUPAC]. If you need to cite these rules please quote this reference as their source.

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