30225-90-2Relevant articles and documents
Organic semiconductor photocatalyst can bifunctionalize arenes and heteroarenes
Ghosh, Indrajit,Khamrai, Jagadish,Savateev, Aleksandr,Shlapakov, Nikita,Antonietti, Markus,K?nig, Burkhard
, p. 360 - 366 (2019/08/15)
Photoexcited electron-hole pairs on a semiconductor surface can engage in redox reactions with two different substrates. Similar to conventional electrosynthesis, the primary redox intermediates afford only separate oxidized and reduced products or, more rarely, combine to one addition product. Here, we report that a stable organic semiconductor material, mesoporous graphitic carbon nitride (mpg-CN), can act as a visible-light photoredox catalyst to orchestrate oxidative and reductive interfacial electron transfers to two different substrates in a two- or three-component system for direct twofold carbon–hydrogen functionalization of arenes and heteroarenes. The mpg-CN catalyst tolerates reactive radicals and strong nucleophiles, is straightforwardly recoverable by simple centrifugation of reaction mixtures, and is reusable for at least four catalytic transformations with conserved activity.
Pd-catalyzed direct and selective C-H functionalization: C3-acetoxylation of indoles
Liu, Qiang,Li, Gang,Yi, Hong,Wu, Pan,Liu, Jie,Lei, Aiwen
supporting information; experimental part, p. 2353 - 2357 (2011/04/24)
Direct functionalization of C-H bonds has been a hot topic in organic chemistry during recent years. Arenes-one of the most abundant chemical motifs-usually have multiple C-H bonds. Although, some examples of direct functionalizations of arenes have been
