New discoveries in chemical research and development in 2021. The appropriate choice of redox mediator can avoid electrode passivation and overpotential, which strongly inhibit the efficient activation of substrates in electrolysis. In a patent, 5908-62-3, name is 1,1-Dioxo-isothiazolidine, introducing its new discovery. HPLC of Formula: C3H7NO2S
This Letter describes a copper catalyzed sulfonamide coupling reaction with aryl bromides to form N-aryl sulfonamides under mild conditions, including the first examples of Cu-catalyzed sulfonamide coupling at room temperature. The reaction protocol tolerates a broad range of substrates including a variety of primary and secondary sulfonamides and challenging heteroaryl bromides such as 2-bromothiazole.
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Reference：
Quinuclidine – Wikipedia,
Quinuclidine | C7H593N | ChemSpider