通过二碘鎓(III)盐的SO 2 / I交换有效地建立了用于二芳基环氧基砜构建的简单方法。随时可用的无机Na 2 S 2 O 5作为安全便捷的SO 2替代。顺利实现了多种功能化的二芳基环化砜,具有良好的收率和优异的收率,并且具有很好的官能团相容性。随后通过该方法以克为单位建立有机发光二极管(OLED)材料分子。在交换策略的简便条件下,成功提供了具有供体-受体基团和π-共轭桥基序的不对称共轭体系,该体系基本传达了半导体材料分子中的电子迁移率。
We report here a two-in-one strategy for the Pd(II)-catalyzed tandem C–H arylation/decarboxylative annulation between readily available cyclic diaryliodoniumsalts and benzoic acids. The carboxylic acid functionality can be used as both a directing group for the ortho-C–H arylation and the reactive group for the tandem decarboxylative annulation. By a step-economical double cross-coupling annulation
Oxygenation of cyclic diphenyl iodoniums (CDPIs) with varied medium‐ring sizes has been fully investigated. This practical copper‐catalyzed tandem reaction of CDPIs with water as the oxygensource enables the construction of derivatised dibenzofurans and xanthenes at moderate to good yields. Moreover, structurally important xanthones are also successfully accessed under the oxygenation conditions with
Starting from cyclic diaryliodoniums and terminal alkenes, a diverse set of fluorenes is conveniently constructed. The reactions catalyzed by palladium undergo one conventional Mizoroki‐Heckreaction and one reductive Heckreaction. The scope of alkenes is general, leading to 29 fluorenes which would expand the structural diversity of fluorene reservoir.
copper-catalyzed diphenylation of readily available aliphatic or (hetero)aromatic carboxylic acids with cyclic hypervalent diaryliodonium reagents. The selective diphenylation of benzoic acids with high atom economy can be achieved without observation of the arylation at the phenyl hydroxyl/thio/amino position. The valuable biphenyl esters with an additional iodo-substituent were obtained in good to excellent