Carboxylic Acids and their Derivatives

Simple Carboxylic Acids Rule C-403

403.1 - When the acid is named according to Rule C-401.1, the name of a univalent or bivalent acyl radical formed by removal of hydroxyl from all the carboxyl groups is derived from the name of the corresponding acid by changing the ending "-oic'' to "-oyl''.

Examples to Rule C-403.1

403.2 - If an acid name is formed with the ending "-carboxylic", the name of the radical obtained by removal of hydroxyl from all carboxyl groups is formed by changing the ending "-carboxylic" to "-carbonyl".

Examples to Rule C-403.2

Note: In radicofunctional nomenclature, names of the type cyclohexanecarbonyl are used, as in:

When, however, the acyl group is a substituent, the compound radical prefix form of type cyclohexylcarbonyl is used, as in:

These principles apply to all acyl radicals whose names end in "carbonyl'', "sulfonyl'', "sulfinyl'', etc. (cf. Rules C-543.3, C-631.1, C-641.7, C-641.8, and C-641.9).

See Recommendations'93 R-5.7.1

Simple Carboxylic Acids Rule C-404, Rule C-405
Hydroxy, Alkoxy and Oxo Acids Rule C-411, Rule C-415, Rule C-416
Amino Acids Rule C-421
Amic acids Rule C-431
Peroxy Acids Rule C-441
Imidic, Hydrazonic, and Hydroxamic Acids Rule C-451
Salts and Esters Rule C-461, Rule C-462, Rule C-463, Rule C-464
Lactones, Lactides, Lactams, and Lactims Rule C-471, Rule C-472, Rule C-473, Rule C-474, Rule C-475
Acyl Halides Rule C-481
Acid Anhydrides Rule C-491


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