《Electrochemical Radical-Radical Cross-Coupling Approach between Sodium Sulfinates and 2H-Indazoles to 3-Sulfonylated 2H-Indazoles》 was written by Kim, Wansoo; Kim, Hun Young; Oh, Kyungsoo. Recommanded Product: Thiophene-2-sulfonyl chloride And the article was included in Organic Letters in 2020. The article conveys some information:
A direct cross-coupling between sodium sulfinates and 2H-indazoles has been developed under electrochem. conditions. The utilization of a graphite anode and platinum cathode in an undivided cell with a constant current of 7 mA allowed the concurrent oxidations of sulfinates and 2H-indazoles to sulfonyl radical and radical cationic 2H-indazoles, facilitating the direct radical-radical coupling strategy to 3-sulfonylated 2H-indazole derivatives The transition-metal- and redox-reagent-free synthetic approach should serve as a valuable synthetic tool to achieve heteroaromatic compounds In the experiment, the researchers used many compounds, for example, Thiophene-2-sulfonyl chloride(cas: 16629-19-9Recommanded Product: Thiophene-2-sulfonyl chloride)
Thiophene-2-sulfonyl chloride(cas: 16629-19-9) is a member of sulfonyl chlorides. Sulfonyl chlorides are reactive sulfonic acid derivatives similar in properties and reactivity to acid chlorides of carboxylates. The sulfonic acid group, however, is a highly hindered molecule, containing a tetrahedral configuration of substituents. Recommanded Product: Thiophene-2-sulfonyl chloride
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics