Direct C-H Sulfonylimination of Pyridinium Salts

Org Lett. 2022 Apr 22;24(15):2821-2825. doi: 10.1021/acs.orglett.2c00725. Epub 2022 Apr 11.


A direct pyridinium C-H sulfonylimination has been developed for the synthesis of sulfonyl iminopyridine derivatives with high efficiency. This transformation features the direct and efficient formation of a C═N bond with a high functional group tolerance under metal-free conditions. The spectroscopic properties potentially enable these sulfonyl iminopyridine compounds to be useful new emitting materials.