Pyrroline, imidazoline, and pyrazoline, which were in previous editions of the IUPAC
Nomenclature of Organic Chemistry
,
are not included in these recommendations. They are named on the basis of fully unsaturated Hantzsch-Widman names (see R-2.3.3.3).

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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