Reduced to clear: The reduction of phosphineoxides, sulfoxides, and amine N-oxides is achieved by using bis(2-chlorophenyl)borinic acid /phenylsilane. The reaction tolerates a wide range of substrates and can be performed under mild conditions with only a 2.5 mol % loading of the catalyst. NMR spectroscopy indicates that a borohydride is the key reducing species, and thus, bis(2-chlorophenyl)borinic
The low‐cost cobalt(II) catalyst has been used for the first time to achieve P(O)‐radical‐mediated bisfunctionalization of alkenes with diarylphosphine oxide and peroxides. This simple process is performed under mild conditions to afford a wide variety of phosphonation‐peroxidation products in a one‐pot manner. Computational studies are carried out to provide a theoretical support for the P(O)‐radical‐involved
Enantioselective Palladium‐Catalyzed Hydrophosphinylation of Allenes with Phosphine Oxides: Access to Chiral Allylic Phosphine Oxides
作者:Zhiping Yang、Jun (Joelle) Wang
DOI:10.1002/anie.202112285
日期:2021.12.20
A highly efficient, versatile and atom-economic protocol to chiral allylic phosphineoxides is demonstrated via palladium-catalyzed asymmetric hydrophosphinylation of allenes with phosphineoxides. A family of chiral allylic phosphineoxides with a diverse range of functional groups were obtained in high yield (up to 99 %) and enantioselectivities (up to 99 % ee).
Dimethyl sulfoxide as a mild oxidant in S–P(O) bond construction: simple and metal-free approaches to phosphinothioates
作者:Jian-Guo Sun、Wei-Zhi Weng、Ping Li、Bo Zhang
DOI:10.1039/c6gc03115c
日期:——
In the presence of dimethylsulfoxide (DMSO) as the mild oxidant and reaction medium, a simple and efficient protocol has been developed for the preparation of phosphinothioates via oxidative dehydrogenative...