a new desulfurative method for generating primary, secondary, and tertiary alkyl radicals through visible‐light photoredoxcatalysis. A process that involves the generation of N‐centered radicalsfrom sulfinamide intermediates, followed by subsequent fragmentation, is critical to forming the corresponding alkyl radical species. This strategy has been successfully applied to conjugate addition reactions
A CONVENIENT PREPARATION OF SULPHINIC ESTERS FROM SULPHINYL CHLORIDES AND CHLOROSULPHITES USING HEXAMETHYLDISILOXANE AS CHLORIDE ANION ACCEPTOR
作者:Jozef Drabowicz
DOI:10.1246/cl.1981.1753
日期:1981.12.5
Sulphinic esters can be obtained in high yields by the reaction of sulphinylchlorides with chlorosulphites in the presence of hexamethyldisiloxane and catalytic amount of dimethyl sulphoxide.
Intramolecular Homolytic Substitution Enabled by Photoredox Catalysis: Sulfur, Phosphorus, and Silicon Heterocycle Synthesis from Aryl Halides
作者:Alberto F. Garrido-Castro、Noelia Salaverri、M. Carmen Maestro、José Alemán
DOI:10.1021/acs.orglett.9b01911
日期:2019.7.5
homolytic substitution with the practicality of the modern photocatalytic approach. Predicated on an efficient metal-free dehalogenation of aryl halides under mild organo-photoredox conditions, sulfur, phosphorus, and silicon heteroatoms capture the C(sp2)-centered radical in an intramolecular fashion.
Traditional preparation of sulfenamides require the use of low oxidation state of sulfur reagent such as RSCl, (RS)2 or RSH, which are toxic, odorous and difficult to deal with due to the harsh reaction conditions. Here high oxidation state of sulfur reagent—aliphatic sulfinamide, were used for preparation of sulfenamide in one step efficiently. Different aromatic amines with all sorts of functional
Copper-Catalyzed Sulfinyl Cross-Coupling Reaction of Sulfinamides
作者:Mengting Kou、Ziqiang Wei、Zhen Li、Bin Xu
DOI:10.1021/acs.orglett.2c03414
日期:2022.11.25
A copper-catalyzed sulfinyl cross-coupling reaction of sulfinamides with aldehyde-derived N-tosylhydrazones is described. This approach enables facile access for the construction of structurally diverse sulfoxides via novel and efficient S–N/S–Cbond interconversions, features broad substrate scope, and accommodates various functional groups as well as pharmacophores. Moreover, the given sulfinyl cross-coupling