671.2 - Compounds containing a group -SO2-N< as part of a ring are named by adding "-sultam" to the name of the hydrocarbon with the same number of carbon atoms. The -SO2- group has priority over the -NH- group for lowest available number.
Examples to Rule C-671.1
671.3 - Sultones and sultams may alternatively be named as heterocyclic compounds by the rules of Section B, the oxygen attached to sulfur being denoted as "dioxide", with a locant.
Example to Rule C-671.2
See Recommendations'93 R-18.104.22.168, R-22.214.171.124
Example to Rule C-671.3
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