 An alternative synthesis of sultams involves initial preparation of a linear sulfonamide, followed by intramolecular C-C bond formation (i.e.cyclization), a strategy that was used in the synthesis of a sultam-based deep-blue emitter for organic electronics.The related sulfinamides (R(S=O)NHR) are amides of sulfinic acids (R(S=O)OH) (see sulfinyl).