1H NMR relaxivity of aqueous suspensions of titanium dioxide nanoparticles coated with a gadolinium(III) chelate of a DOTA-monoamide with a phenylphosphonate pendant arm
The assembly of rotaxane-like dye/cyclodextrin/surface complexes on aluminium trihydroxide or goethite
作者:Rachel J. Cooper、Philip J. Camp、Ross J. Gordon、David K. Henderson、Dorothy C. R. Henry、Hamish McNab、Sonali S. De Silva、Daniel Tackley、Peter A. Tasker、Paul Wight
DOI:10.1039/b518260c
日期:——
Simple azo-dyes carrying phosphonic acid and arsonicacid substituents such as 4-(4-hydroxyphenyl azo)phenylphosphonic acid (5) and 4-(4-hydroxyphenylazo)phenylarsonic acid (6) bind more strongly to high surface area oxides such as aluminium trihydroxide and goethite than their carboxylic and sulfonic acid analogues and the phosphonate-functionalized dyes have been shown to have greater humidity fastness
Palladium-Catalyzed Desulfitative Cross-Coupling Reaction of Sodium Arylsulfinates with H-Phosphonate Diesters
作者:Tao Miao、Lei Wang
DOI:10.1002/adsc.201300983
日期:2014.3.24
A novel and convenient palladium‐catalyzed cross‐coupling reaction of H‐phosphonate diesters with sodiumarylsulfinates was developed via desulfitation in the presence of silver carbonate and tetra‐butylammonium chloride. This method is highly efficient and provides a rapid access to a broad spectrum of arylphosphonate diesters in good to excellent yields.
Catalyzed by palladium(II) chloride, a diverse range of arylsulfinatesodium, potassium, lithium, silver, zinc, and copper salts undergo desulfination/C–P coupling with H-phosphonates, in the presence of silver(I) carbonate as oxidant, to produce useful arylphosphonates under microwave irradiation.
Catalyst-free phosphorylation of aryl halides with trialkyl phosphites through electrochemical reduction
作者:Shuai Wang、Cheng Yang、Shuo Sun、Jianbo Wang
DOI:10.1039/c9cc07069a
日期:——
A catalyst-free electrochemical cross-coupling reaction of aryl halides with trialkyl phosphite has been developed. This reaction proceeds in an undivided cell with a low-cost Ni anode and a graphite cathode under mild and neutral conditions. A wide range of functional groups are well-tolerated and the phosphorylated product can be obtained on the gram scale, showing that this transformation has the
Manganese-Catalyzed and Mediated Synthesis of Arylphosphinates and Related Compounds
作者:Olivier Berger、Jean-Luc Montchamp
DOI:10.1021/acs.joc.9b01239
日期:2019.7.19
H-phosphinates and relatedcompounds was examined. A practical catalytic process with the air as the oxidant could not be found. However, an inexpensive and robust methodology was developed, using catalytic Mn(II) as the radical initiator and excess Mn(IV) as the stoichiometric oxidant. Using these conditions, the inter- and intramolecular arylation of phosphinylidene compounds has a broad scope, including