64741-30-6Relevant academic research and scientific papers
Steric effects in complexes of diphenyl(2-pyridyl)phosphine oxide with the uranyl ion. Synthetic, structural and theoretical studies
Vats, Bal Govind,Kannan,Parvathi,Maity,Drew
, p. 116 - 121 (2015)
Uranyl complexes containing diphenyl(2-pyridyl)phosphine oxide, with the formulae [UO2(NO3)2({C6H5}2POC5H4N)2] (1) and [UO2(DBM)2({Cs
Bright photo- And triboluminescence of centrosymmetric Eu(iii) and Tb(iii) complexes with phosphine oxides containing azaheterocycles
Artem’ev, Alexander V.,Bryleva, Yuliya A.,Davydova, Maria P.,Glinskaya, Ludmila A.,Komarov, Vladislav Yu.,Rakhmanova, Mariana I.,Rogovoy, Maxim I.,Samsonenko, Denis G.
, p. 13869 - 13876 (2021)
Six centrosymmetric mononuclear Eu3+and Tb3+complexes of the type [LnL2(hfac)3] have been synthesized employing diphenyl(pyridin-2-yl)phosphine oxide (Ph2P(O)Py), diphenyl(pyridimin-2-yl)phosphine oxide (Ph2P(O)Pym), and diphenyl(pyrazin-2-yl)phosphine oxide (Ph2P(O)Pyr) as supporting ligands (L). The complexes [LnL2(hfac)3] (L = Ph2P(O)Py and Ph2P(O)Pyr) comprise an eight-coordinate Ln3+ion with two monodentate O-donor phosphine oxides and three bidentate hfac?anions. In the [Ln{Ph2P(O)Pym}2(hfac)3] complexes, the Ln3+ion is nine-coordinated by three bidentate hfac?anions and two Ph2P(O)Pym ligands, one of which is bound to Ln in a N,O-bidentate chelating mode, and the other acts as a monodentate O-donor ligand. The complexes display bright solid-state photoluminescence with emission quantum yields up to 56%. The integral intensity of5D0→7F2transition in the emission spectra of the Eu(iii) complexes strongly depends on the coordination environment of the Eu3+ion. The asymmetric coordination geometry around Eu3+results in the large radiative rate constants. The crystals of the Eu(iii) and Tb(iii) complexes exhibit triboluminescence upon breaking under ambient conditions. The relationship between the triboluminescent properties and crystal structures of the complexes is discussed.
The Trityl-Cation Mediated Phosphine Oxides Reduction
Landais, Yannick,Laye, Claire,Lusseau, Jonathan,Robert, Frédéric
supporting information, p. 3035 - 3043 (2021/05/10)
Reduction of phosphine oxides into the corresponding phosphines using PhSiH3 as a reducing agent and Ph3C+[B(C6F5)4]? as an initiator is described. The process is highly efficient, reducing a broad range of secondary and tertiary alkyl and arylphosphines, bearing various functional groups in generally good yields. The reaction is believed to proceed through the generation of a silyl cation, which reaction with the phosphine oxide provides a phosphonium salt, further reduced by the silane to afford the desired phosphine along with siloxanes. (Figure presented.).
Efficient potassium hydroxide promoted P-arylation of aryl halides with diphenylphosphine
Chen, Jin,Dai, Bencai,Liu, Changchun,Shen, Zhihao,Zhou, Yang
, (2021/06/26)
A simple synthetic method of triarylphosphine compounds by KOH-promoted P-Arylation reaction of aryl halides with diphenylphosphine is presented. Notably, this transformation could smoothly proceed with high yields under transition-metal-free and mild reaction conditions. In addition, this protocol is valuable for industrial application due to the convenient operation and readily accessible aromatic halides. A possible explanation of the reaction mechanism was proposed based on the experimental data.
Palladium-Catalyzed C-P Bond-Forming Reactions of Aryl Nonaflates Accelerated by Iodide
McErlain, Holly,Riley, Leanne M.,Sutherland, Andrew
, p. 17036 - 17049 (2021/11/18)
An iodide-accelerated, palladium-catalyzed C-P bond-forming reaction of aryl nonaflates is described. The protocol was optimized for the synthesis of aryl phosphine oxides and was found to be tolerant of a wide range of aryl nonaflates. The general nature of this transformation was established with coupling to other P(O)H compounds for the synthesis of aryl phosphonates and an aryl phosphinate. The straightforward synthesis of stable, isolable aryl nonaflates, in combination with the rapid C-P bond-forming reaction allows facile preparation of aryl phosphorus target compounds from readily available phenol starting materials. The synthetic utility of this general strategy was demonstrated with the efficient preparation of an organic light-emitting diode (OLED) material and a phosphonophenylalanine mimic.
Cu/Picolinamides-Catalyzed Coupling of (Hetero)aryl Halides with Secondary Phosphine Oxides and Phosphite?
Fang, Chao,Wei, Bangguo,Ma, Dawei
supporting information, p. 2957 - 2961 (2021/08/23)
Some 4-hydroxy-picolinic acid derived amides were revealed as more efficient ligands for Cu-catalyzed coupling of (hetero)aryl halides with secondary phosphine oxides and phosphites. Only 3—5 mol% CuI and ligands were required to ensure coupling with a number of (hetero)aryl bromides and iodides to complete at 120 oC in 10—20 h.
Preparation method of aromatic phosphine oxide compound
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Paragraph 0046-0048, (2021/10/20)
The invention relates to the field of organic synthesis, in particular to a preparation method of an aromatic phosphine oxide compound. The preparation method comprises the following steps: adding a P(O)-H compound, a fluoroaromatic compound and an alkali reagent into an organic solvent, conducting mixing, performing stirring for reaction, and carrying out cooling to obtain a mixed solution; and carrying out washing and extracting to obtain an organic phase, drying and distilling the organic phase, and performing column chromatography to obtain the aromatic phosphine oxide compound. The method is simple in reaction operation, only a proper amount of alkali needs to be added, special reaction conditions such as ligands, catalysts and additives are not needed, the reaction is simple and efficient, and good industrial application prospects are achieved.
Nickel-catalyzed C–P cross-coupling of (het)aryl tosylates with secondary phosphine oxides
He, Xiao-Yun
, p. 747 - 752 (2021/02/26)
A novel and convenient approach to the synthesis of various tertiary phosphine oxides via nickel-catalyzed cross-coupling of (het)aromatic tosylates with secondary phosphine oxides is developed. The reaction employs cheap nickel as the catalyst, 1-(2-(di-tert-butylphosphanyl)phenyl)-4-methoxypiperidine (L3) as the ligand, and pyridine as the base. This reaction produces the corresponding (het)aromatic phosphorus compounds in good to high yields. Moreover, four new tertiary phosphine oxides are reported in this process.
Air-stable phosphine organocatalysts for the hydroarsination reaction
Leung, Pak-Hing,Li, Yongxin,Pullarkat, Sumod A.,Tay, Wee Shan,Yang, Xiang-Yuan
supporting information, (2020/03/18)
Readily-available triarylphosphines are explored as organocatalysts for the hydroarsination reaction. When compared to transition metal catalysis, phosphine organocatalysis greatly improved solvent compatibility of the hydroarsination of nitrostyrenes. Upon complete conversion, arsine products were isolated in up to 99% yield while up to 48% of the phosphine catalyst was still active. A mechanism was proposed and structure-activity analysis regarding catalyst activity concluded that sterically-bulkier catalysts were effective at minimizing catalyst deactivation.
Preparation method of phosphorus center chiral compound
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Paragraph 0046-0051, (2020/09/20)
The invention discloses a preparation method of a phosphorus center chiral compound. The preparation method specifically comprises the following step: in the presence of an oxidizing agent, palladiumsalt and an N-single protected chiral amino acid ligand, carrying out C-H bond alkenylation reaction on 2-pyridyl diarylphosphine oxide shown as a formula (II) and an olefin derivative shown as a formula (III) to generate the phosphorus center chiral compound shown as a formula (I). The method has good adaptability to different types of substituents in various 2-pyridyl diarylphosphine oxides andolefins, especially olefins with large steric hindrance, and has the advantages of stable yield and excellent enantioselectivity.
