A Mild and Ligand-Free Ni-Catalyzed Silylation via C–OMe Cleavage
作者:Cayetana Zarate、Masaki Nakajima、Ruben Martin
DOI:10.1021/jacs.6b10998
日期:2017.1.25
of central importance in organic synthesis. Despite the formidable potential of aryl methyl ethers as coupling partners, the scarcity of metal-catalyzed C-heteroatom bond formations via C-OMe cleavage is striking, with isolated precedents requiring specialized, yet expensive, ligands, high temperatures, and π-extended backbones. We report an unprecedented catalytic ipso-silylation of aryl methyl ethers
Continuous-flow Si–H functionalizations of hydrosilanes <i>via</i> sequential organolithium reactions catalyzed by potassium <i>tert</i>-butoxide
作者:Hyune-Jea Lee、Changmo Kwak、Dong-Pyo Kim、Heejin Kim
DOI:10.1039/d0gc03213a
日期:——
tri-functionalizations of unactivated hydrosilanes via serial organolithiumreactions catalyzed by earth-abundant metal compounds. Based on the screening of various additives, we found that catalytic potassium tert-butoxide (t-BuOK) facilitates the rapid reaction of organolithiums with hydrosilanes. Using a flow microreactor system, various organolithiums bearing functional groups were efficiently generated
Development of new odorless thiols (dodecanethiol, 4- n -heptylphenylmethanethiol, 4-trimethylsilylphenylmethanethiol, 4-trimethylsilylbenzenethiol) and an odorlesssulfide (1-methylsulfanyldodecane) and their applications to dealkylation, Michael addition, Swern oxidation, and Corey - Kim oxidation are described.
Supported palladium‐goldalloy‐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 goldnanoparticles showed no catalytic activity, gold‐rich palladium‐goldalloynanoparticles efficiently catalyzed the title reaction to give arylsilanes