Nickel/copper-cocatalyzed decarbonylative silylation of acyl fluorides
作者:Xiu Wang、Zhenhua Wang、Yasushi Nishihara
DOI:10.1039/c9cc05325e
日期:——
Ni/Cu-cocatalyzed decarbonylative silylation of acyl fluorides with silylboranes has been developed to afford various arylsilanes with high efficiency and good functional-group compatibility via carbon–fluorine bond cleavage and carbon–siliconbond formation. Such transformation can not only extend the functionalization type of acyl fluorides but complement the synthetic route for arylsilanes.
Aromatic organosilanes bearing C(sp2)–Si bonds have found increasing applications across the chemical science, yet are mostly produced by atom-uneconomical stoichiometric procedures. Catalytic alternatives using hydrosilanes as silicon sources have also been described, but they display unfavorable thermodynamics and are mostly based on expensive catalytic systems, often derived from noble metals, or
Catalytic Silylation: SiO2-supported gold nanoparticle catalysts showed high activity for silylation of C(sp2)−H bond to afford a series of aryl and heteroarylsilanes. Detailed mechanistic investigation revealed that O2-activated Au NPs and ethers cooperatively functioned to generate silyl cation, thereby enabling electrophilic C−Si bond formation.
Visible light mediated desilylative C(sp<sup>2</sup>)–C(sp<sup>2</sup>) cross-coupling reactions of arylsilanes with aryldiazonium salts under Au(<scp>i</scp>)/Au(<scp>iii</scp>) catalysis
作者:Indradweep Chakrabarty、Manjur O. Akram、Suprakash Biswas、Nitin T. Patil
DOI:10.1039/c8cc03925a
日期:——
Desilylative C(sp2)–C(sp2) cross-coupling reactions of arylsilanes with aryldiazonium salts under Au(I)/photoredox catalysis have been reported. The addition of Cu-salts as catalysts was found to be crucial for the success of this transformation.
Stereoselective synthesis of vinylsilanes via copper-catalyzed silylation of alkenes with silanes
作者:Jian Gu、Chun Cai
DOI:10.1039/c6cc05509e
日期:——
An efficient and stereoselective synthesis of vinylsilanes via copper-catalyzed direct silylation of alkenes with silanes was developed. This study offers a new and expedient strategy for the synthesis of synthetically...