NHC-Pd(II)-Im complex showed efficient catalytic activity toward the direct CH bond arylation of (benzo)thiophenes with the challenging arylchlorides. Under the suitable conditions, all reactions proceeded smoothly to give the desired CH bond arylated products in acceptable to high yields, giving an inexpensive and alternative methodology for the arylation of (benzo)thiophenes.
A mild protocol for electrochemically oxidative fluorodifunctionalization of styrenes has been demonstrated. The reaction proceeds under metal, external oxidant, and catalyst free conditions, allowing tunable access to a wide variety of synthetically useful fluoroalkyl derivatives, such as β-fluorosulfone/fluoromethyl, fluorothiocyanation, and vinylsulfonyl derivatives. Moreover, CsF was shown to be
Iminyl-Radical-Promoted C–C Bond Cleavage/Heck-Like Coupling via Dual Cobaloxime and Photoredox Catalysis
作者:Jia-Lin Tu、Wan Tang、Wei Xu、Feng Liu
DOI:10.1021/acs.joc.0c02834
日期:2021.2.5
Room-Temperature Hydrodehalogenation of Halogenated Heteropentalenes with One or Two Heteroatoms
作者:Giorgio Chelucci、Salvatore Baldino、Andrea Ruiu
DOI:10.1021/jo3019335
日期:2012.11.2
The pair NaBH4-TMEDA as a hydride source and catalytic PdCl2(4ppf) in THF prove to be an efficient system for the hydrodehalogenation of bromo(chloro)-heteropentalenes. with one or two heteroatoms, while Pd(OAc)(2)/PPh3 is able to reduce reactive haloheteropentalenes, and PdCl2(tbpf) allows the removal of the 2-chlorine from a thiophene ring. The reaction conditions tolerate various functional groups, allowing highly chemoselective reactions in the presence of halide, ester, alkyne, alkene, and nitrile substituents and also showing good efficiency in the regioselective hydrodehalogenation of a variety of polyhalogenated substrates.