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Carboxylic Acids and their Derivatives

Lactones Lactides, Lactams, and Lactims Rule C-475

475.1 - Compounds containing a group -CO-NH- or -C(OH)=N- as part of a ring are preferably named as heterocyclic compounds in accordance with the rules of Section B, but may also be named as described in Rule C-472.2 but with "-lactam'' or "-lactim'', respectively, in place of "-olide''.

Examples to Rule C-475.1

Exception: The name -caprolactam may be used for the compound

in place of 6-hexanelactam or hexahydro-2-azepinone.

See Recommendations'93 R-5.7.5

Acyl Halides Rule C-481
Acid Anhydrides Rule C-491

This HTML reproduction of Sections A, B and C of IUPAC "Blue Book" is as close as possible to the published version [see Nomenclature of Organic Chemistry, Sections A, B, C, D, E, F, and H, Pergamon Press, Oxford, 1979. Copyright 1979 IUPAC.] If you need to cite these rules please quote this reference as their source.

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