Photoredox/Nickel Dual-Catalyzed Reductive Cross Coupling of Aryl Halides Using an Organic Reducing Agent
作者:Abhishek Dewanji、Raoul F. Bülow、Magnus Rueping
DOI:10.1021/acs.orglett.0c00199
日期:2020.2.21
cross-coupling of polyfluorinated arenes with a broad range of aryl halides has been developed. Sequential carbon-fluorine bond cleavage and carbon-carbonbondformation are two of the important features of the reaction. Addition of an arylradical anion to a nickel intermediate was achieved for the first time using polyfluoroarenes as radical precursors. This, in combination with the excellent para selectivity
Perfluoropyridine as an Efficient, Tunable Scaffold for Bis(pyrazol‐1‐yl)pyridine Copper Complexes
作者:Andrew J. Peloquin、Matthew B. Houck、Colin D. McMillen、Scott T. Iacono、William T. Pennington
DOI:10.1002/ejic.202000150
日期:2020.5.14
This report details the syntheses of five new 2,6‐bis(pyrazol‐1‐yl)pyridine ligands carried out by a unique strategy of utilizing pentafluoropyridine for the pyridine core. Formation of each ligand is accomplished under mild conditions utilizing carbonate bases. Each ligand reacts readily with copper(II) triflate to form the corresponding salt in high yield. Ligands and complexes were characterized
Ionic hydrogenation of naphthyl tetrafluoropyridin-4-yl ethers as a new route to 5,6,7,8-tetrahydronaphthols
作者:Zhongwei Zhu、Konstantin Yu. Koltunov
DOI:10.1016/j.mencom.2020.03.020
日期:2020.3
O-Tetrafluoropyridin-4-yl-protected naphthols undergo regioselective reduction with cyclohexane in the presence of aluminium chloride to afford the corresponding 5,6,7,8-tetrahydronaphthyl ethers.