56372-47-5Relevant academic research and scientific papers
A Catalyst-Free Synthesis of Phosphinic Amides Using O-Benzoylhydroxylamines
Zhu, Rui,Pan, Chongqing,Gu, Zhenhua
supporting information, p. 5862 - 5865 (2015/12/11)
A practical approach for the synthesis of phosphinic amides via the coupling of secondary phosphine oxides (SPOs) with O-benzoylhydroxylamines has been reported. Simply heating the mixture of SPOs and O-benzoylhydroxylamines in the presence of K2/su
Ethylene Polymerization and Copolymerization with Polar Monomers by Cationic Phosphine Phosphonic Amide Palladium Complexes
Sui, Xuelin,Dai, Shengyu,Chen, Changle
, p. 5932 - 5937 (2015/10/12)
The synthesis, characterization, and olefin (co)polymerization studies of a series of palladium complexes bearing phosphine phosphonic amide ligands were investigated. In this ligand framework, substituents on three positions could be modulated independently, which distinguishes this class of ligand and provides a great deal of flexibilities and opportunities to tune the catalytic properties. The palladium complex with an o-MeO-Ph substituent on phosphine is one of the most active palladium catalysts in ethylene polymerization, with 1 order of magnitude higher activity than the corresponding classic phosphine-sulfonate palladium complex. Meanwhile, the polyethylene generated by this new palladium complex showed ca. 6 times higher molecular weight in comparison to that by the classic phosphine-sulfonate palladium complex. In ethylene/methyl acrylate copolymerization, the new palladium complex showed lower activity, generating copolymer with similar methyl acrylate incorporation and much higher molecular weight. The new palladium complex was also able to copolymerize ethylene with other polar monomers, including butyl vinyl ether and allyl acetate, making it one of the very few catalyst systems that can copolymerize ethylene with multiple industrially relevant polar monomers.
The reactivity of arylphosphorus acid amides under Birch reduction conditions
Stankevic, Marek,Wlodarczyk, Adam,Nieckarz, Damian
, p. 4351 - 4371 (2013/07/26)
Several classes of arylphosphorus acid amides have been tested in reactions with alkali metal solutions in liquid ammonia. The outcomes of such reactions depend on the structures of the starting materials. Generally, two processes-Birch reduction or cleavage of the P-aryl bond-can be operative. Diarylphosphinic amides tend to undergo double Birch reduction to afford bis(cyclohexadienyl)phosphinic amides. Copyright
Cleavage of P=O in the presence of P-N: Aminophosphine oxide reduction with in situ boronation of the PIII product
Kenny, Niall P.,Rajendran, Kamalraj V.,Jennings, Elizabeth V.,Gilheany, Declan G.
, p. 14210 - 14214 (2013/11/06)
In contrast to tertiary phos-phine oxides, the deoxygenation of aminophosphine oxides is effectively impossible due to the need to break the immensely strong and inert P=O bond in the presence of a relatively weak and more reactive P-N bond. This long-sta
Directed ortho metallation chemistry and phosphine synthesis: New ligands for the suzuki-miyaura reaction
Williams, D. Bradley G.,Evans, Stephen J.,De Bod, Henriette,Mokhadinyana, Molise S.,Hughes, Tanya
experimental part, p. 3106 - 3112 (2009/12/28)
We describe the use of the phosphinic amide moiety as an effective directed ortho metallation group for the incorporation of various phosphino groups onto a benzene ring to generate phosphine ligands. These ligands were used to generate active palladium c
Direct conversion of secondary phosphine oxides and h-phosphinates with [Di(acyloxy)iodo]benzenes to phosphinic and phosphonic amides
Hubacz, Anna,Makowiec, Slawomir
experimental part, p. 81 - 86 (2009/09/25)
The reaction of [di(acyloxy)iodo]- benzene with secondary phosphine oxides or H-phosphinates in the presence of primary or secondary amines allows one to obtain phosphinic or phosphonic acids amides in the one-pot process. We take advantage of the strong acylating system DAIB/R2P(O)H to phosphinylation of amines. However, the reaction mechanism is multipathway and causes yields of phosphinic or phosphonic acids amides to be moderate. When the concentration of amines is low, the intermolecular process plays a main role leading to the formation of carboxylic amides through mixed phosphoric-carboxylic anhydride, and also in the low concentration of amines, tetrahydrofuran effectively competes with the amines in the nucleophilic attack on the acylating intermediates.
Organic phosphorus compounds 106.1 a 31P-NMR study of phosphinous-, phosphinic-, and thiophosphinic amides
Maier, Ludwig,Diel, Peter J.
, p. 273 - 300 (2007/10/03)
The synthesis, physical, chemical and spectroscopic properties of eight different types of phosphinous-, phosphinic-and thiophosphinic amides are reported. It is shown that the 31P-chem. shifts of tertiary amides are at lower magnetic field than that of secondary amides. As an exception, in the bis(tertiary butyl) series this trend is reversed.
THE FORMATION OF P(III) PRODUCTS FROM PHOSPHINAMIDES WITH SILICON HYDRIDES
Quin, Louis D.,Szewczyk, Jerzy
, p. 161 - 170 (2007/10/02)
Two N,N-diethyl derivatives of phosphinamides in the 3-phospholene series were used as models to develop techniques for reduction to P(III) derivatives.The products from the reduction with HSiCl3 in the presence of pyridine depended on the molar ratio of the participants.A 1:1:1 amide-HSiCl3-pyridine mixture after 2 h in refluxing benzene provided the phosphinous chlorides in preparatively useful (55-65percent) yield.A 1:1.5:1.5 mixture led to coupling at phosphorus to give the diphosphine, also in good yield (60-65percent).The diphosphines also resulted from refluxing a 1:1 mixture at 100o gave only the product of deoxygenation (65percent).A 1-benzylaminophosphetane oxide was also reduced succesfully.The conditions with HSiCl3 and C6H5SiH3 were applied to a noncyclic phosphinamide (C6H5)2PO(NEt2); reaction rates were considerably slower than for the cyclic amides, but similar P(III) products were formed. 13C and 31P NMR spectra are reported for all new compounds.
