19780-65-5Relevant articles and documents
Palladium-Catalyzed C(sp3)-H Oxygenation via Electrochemical Oxidation
Yang, Qi-Liang,Li, Yi-Qian,Ma, Cong,Fang, Ping,Zhang, Xiu-Jie,Mei, Tian-Sheng
, p. 3293 - 3298 (2017)
Palladium-catalyzed C-H activation/C-O bond-forming reactions have emerged as attractive tools for organic synthesis. Typically, these reactions require strong chemical oxidants, which convert organopalladium(II) intermediates into the PdIII or PdIV oxidation state to promote otherwise challenging C-O reductive elimination. However, previously reported oxidants possess significant disadvantages, including poor atom economy, high cost, and the formation of undesired byproducts. To overcome these issues, we report an electrochemical strategy that takes advantage of anodic oxidation of PdII to induce selective C-O reductive elimination with a variety of oxyanion coupling partners.
Organic luminescent material containing 6-silicon-based substituted isoquinoline ligand
-
, (2020/11/22)
Disclosed is an organic light-emitting material containing a 6silicon-based substituted isoquinoline ligand. The organic light-emitting material is a metal complex containing a 6silicon-based substituted isoquinoline ligand, and can be used as a light-emitting material in a light-emitting layer of an organic light-emitting device. These novel complexes can provide more red and saturated emissions,and can also exhibit significantly improved lifetime and high efficiency excellent device performance. An electroluminescent device and a compound formulation comprising the metal complex are also disclosed.
Selective liquid-phase semihydrogenation of functionalized acetylenes and propargylic alcohols with silica-supported bimetallic palladium-copper catalysts
Spee,Boersma,Meijer,Slagt,Van Koten,Geus
, p. 1647 - 1656 (2007/10/03)
Silica-supported, bimetallic palladium-copper catalysts were prepared in solution under mild conditions by reacting lithium di(4-tolyl)cuprate with palladium acetate in the presence of silica particles. Small bimetallic palladium-copper particles were deposited on the silica surface as confirmed with TEM-EDAX and EXAFS. The new material has been applied as catalyst in the liquid-phase semihydrogenation of mono- and disubstituted alkynes and showed high selectivity toward the cis-alkenes. The influence of addition of quinoline or potassium hydroxide to the semihydrogenation reaction mixture and the effects of exposure of the catalyst to air before use have been investigated. Silica-supported, bimetallic palladium-copper catalysts were prepared in solution under mild conditions by reacting lithium di(4-tolyl)cuprate with palladium acetate in the presence of silica particles. Small bimetallic palladium-copper particles were deposited on the silica surface as confirmed with TEM-EDAX and EXAFS. The new material has been applied as catalyst in the liquid-phase semihydrogenation of mono- and disubstituted alkynes and showed high selectivity toward the cis-alkenes. The influence of addition of quinoline or potassium hydroxide to the semihydrogenation reaction mixture and the effects of exposure of the catalyst to air before use have been investigated.
