Aldehydes, Ketones, and their Derivatives

Ketones Rule C-313

313.1 - The name of a ketone having a ring or rings attached to a chain which contains the carbonyl group or groups is formed from the name of the corresponding acyclic hydrocarbon, with the radical name of the ring system as a substituent, the ketone group or groups being indicated by a suffix "-one", "-dione", etc.

Examples to Rule C-313.1

313.2 - Acyclic monoacyl derivatives of cyclic compounds are named (a) by the method of Rule C-313.1, (b) by the radicofunctional method of Rule C-312.2, (c) by prefixing the name of the acyl group to the name of the cyclic component, or (d) if the cyclic component is benzene or naphthalene by changing the ending "-ie acid" or "-oie acid" of the name of the acid corresponding to the acyl group to "-ophenone" or "-onaphthone", respectively.

Examples to Rule C-313.2


The following are examples of trivial names retained for ketones:

313.3 - When a carbonyl group is attached directly to carbon atoms in two ring systems, the compound is named by the radicofunctional method provided that no other substituent is present having priority for citation as principal group (compare Rule C-316.2).

Examples to Rule C-313.3


313.4 - The name of a polyketone in which two or more contiguous carbonyl groups have rings attached at each end is formed (a) by the radicofunctional method with the functional class name "diketone", "triketone", etc., or (b) by substitutive nomenclature with "-one" suffixes.

Examples to Rule C-313.4


See Recommendations'93 R-5.6.2

Ketones Rule C-314, Rule C-315, Rule C-316, Rule C-317 , Rule C-318
Ketenes Rule C-321
Acetals and Acylals Rule C-331, Rule C-332, Rule C-333


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.

Published with permission of the IUPAC by Advanced Chemistry Development, Inc.,, +1(416)368-3435 tel, +1(416)368-5596 fax. For comments or suggestions please contact