Rapid Metal-Free Formation of Free Phosphines from Phosphine Oxides
作者:Cei B. Provis-Evans、Emma A. C. Emanuelsson、Ruth L. Webster
DOI:10.1002/adsc.201800723
日期:2018.10.18
A rapid method for the reduction of secondary phosphineoxides under mild conditions has been developed, allowing simple isolation of the corresponding free phosphines. The methodology involves the use of pinacol borane (HBpin) to effect the reduction while circumventing the formation of a phosphine borane adduct, as is usually the case with various other commonly used borane reducing agents such as
Phosphinyl Guanidine Compounds, Metal Salt Complexes, Catalyst Systems, and Their Use to Oligomerize or Polymerize Olefins
申请人:SYDORA Orson J.
公开号:US20130331629A1
公开(公告)日:2013-12-12
The present application relates to N
2
-phosphinyl guanidine metal salt complexes. The present application also relates to catalyst systems comprising N
2
-phosphinyl guanidine metal salt complexes and processes for making catalyst systems comprising N
2
-phosphinyl guanidine metal salt complexes. The present application also relates to utilizing N
2
-phosphinyl guanidine metal salt complexes in processes of oligomerizing or polymerizing olefins.
Visible Light-Mediated Photocatalytic Metal-Free Cross-Coupling Reaction of Alkenyl Carboxylic Acids with Diarylphosphine Oxides Leading to β-Ketophosphine Oxides
作者:Hai-Feng Qian、Cheng-Kun Li、Zhi-Hao Zhou、Ze-Kun Tao、Adedamola Shoberu、Jian-Ping Zou
DOI:10.1021/acs.orglett.8b02639
日期:2018.9.21
A new visible light-mediated photocatalytic decarboxylative oxyphosphorylation of cinnamicacids with diarylphosphine oxides is described. This reaction is performed under mild conditions to afford the corresponding β-ketophosphine oxides.
general palladium-catalyzed one-pot procedure for the synthesis of phosphonates, phosphinates and phosphine oxides from phenols mediated by sulfuryl fluoride. It features mild conditions, broad substrate scope, high functionality tolerance and water insensitivity. The utility of this procedure has been well demonstrated by gram-scale synthesis, sequential synthesis of click chemistry building blocks