14311-75-2Relevant articles and documents
Iron-Catalyzed Silylation of (Hetero)aryl Chlorides with Et3SiBpin
Jia, Jia,Zeng, Xiaoqin,Liu, Zhengli,Zhao, Liang,He, Chun-Yang,Li, Xiao-Fei,Feng, Zhang
, p. 2816 - 2821 (2020)
To date, the iron-catalyzed construction of C-heteroatom bonds has been less developed due to the difficulty of transmetalation with heteroatom anions and the sluggish reductive elimination. Herein we report an iron-catalyzed method for the silylation of
Silylation of Aryl Chlorides by Bimetallic Catalysis of Palladium and Gold on Alloy Nanoparticles
Miura, Hiroki,Masaki, Yosuke,Fukuta, Yohei,Shishido, Tetsuya
supporting information, p. 2642 - 2650 (2020/04/22)
Supported palladium-gold alloy-catalyzed cross-coupling of aryl chlorides and hydrosilanes enabled the selective formation of aryl-silicon bonds. Whereas a monometallic palladium catalyst predominantly promoted the hydrodechlorination of aryl chlorides and gold nanoparticles showed no catalytic activity, gold-rich palladium-gold alloy nanoparticles efficiently catalyzed the title reaction to give arylsilanes with high selectivity. A wide array of aryl chlorides and hydrosilanes participated in the heterogeneously-catalyzed reaction to furnish the corresponding arylsilanes in 34–80% yields. A detailed mechanistic investigation revealed that palladium and gold atoms on the surface of alloy nanoparticles independently functioned as active sites for the formation of aryl nucleophiles and silyl electrophiles, respectively, which indicates that palladium and gold atoms on alloy nanoparticles work together to enable the selective formation of aryl-silicon bonds. (Figure presented.).
Catalytic reduction of aryl trialkylammonium salts to aryl silanes and arenes
Rand, Alexander W.,Montgomery, John
, p. 5338 - 5344 (2019/05/29)
A new approach for the reduction of aryl ammonium salts to arenes or aryl silanes using nickel catalysis is reported. This method displays excellent ligand-controlled selectivity based on the N-heterocyclic carbene (NHC) ligand employed. Utilizing a large NHC in non-polar solvents generates aryl silanes, while small NHCs in polar solvents promote reduction to arenes. Several classes of aryl silanes can be accessed from simple aniline building blocks, including those useful for cross-couplings, oxidations, and halogenations. The reaction conditions are mild, functional group tolerant, and provide efficient access to a variety of benzene derivatives.
