1225-16-7Relevant academic research and scientific papers
A novel structural type of conformationally fixed, mixed phosphonium-iodonium ylides based on phenoxaphosphinine
Nenashev,Vinogradov,Mironov,Podrugina
, p. 2333 - 2339 (2020)
A synthetic approach to a novel type of phosphonium and mixed phosphonium-iodonium ylides containing a conformationally fixed phosphonium fragment is developed. New representatives of these families of chemical compounds based on cyclic phenoxaphosphinine
Compound and organic electronic element comprising same
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Paragraph 0212, (2017/11/29)
The invention relates to a compound and an organic electronic element comprising the same. The compound disclosed in the invention is applied to the organic electronic element typified by organic light emitting elements, the driving voltage of the organic electronic elements can be lowered, optical efficiency can be improved, and lifetime characteristics of the elements can be improved via use of the thermal stability of the compound.
COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
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Paragraph 0235; 0240-0243, (2018/02/10)
The present specification relates to a compound represented by chemical formula 1, and an organic light-emitting device comprising the same. The compound of the present specification may be used as a material for an organic material layer in an organic light-emitting device to improve efficiency, low driving voltage, and/or lifetime characteristic of the organic light-emitting device. Further, one embodiment of the present specification provides an organic light-emitting device which comprises: a first electrode; a second electrode facing the first electrode; and one or more organic material layers disposed between the first electrode and the second electrode, wherein at least one of the organic material layers comprises the compound of chemical formula 1.COPYRIGHT KIPO 2017
Palladium-Catalyzed Synthesis of Six-Membered Benzofuzed Phosphacycles via Carbon-Phosphorus Bond Cleavage
Baba, Katsuaki,Tobisu, Mamoru,Chatani, Naoto
, p. 70 - 73 (2015/07/28)
The palladium-catalyzed synthesis of dibenzofused six-membered phosphacycles via carbon-phosphorus bond cleavage is developed. This method is compatible with a range of functional groups, such as esters, amides, and carbamates, which is in sharp contrast to the limitations of the classical method using organolithium reagents. (Figure Presented).
Design, testing and kinetic analysis of bulky monodentate phosphorus ligands in the mizoroki-heck reaction
Dodds, Deborah L.,Boele, Maarten D.K.,Van Strijdonck, Gino P.F.,De Vries, Johannes G.,Van Leeuwen, Piet W.N.M.,Kamer, Paul C. J.
experimental part, p. 1660 - 1671 (2012/05/19)
A series of new monodentate phosphane ligands 2 have been evaluated in the Mizoroki-Heck arylation reaction of iodobenzene and styrene and compared with our previously reported ligands, 1, 3 and 4. The concept of rational ligand design is discussed, and we describe how the performance of this new ligand family could be predicted. Employing our best ligand, 3,3'-di-tert-butyl-5,5'- dimethoxybiphenyl-2,2'-diyl diisopropylphosphoramidite (3b), we explored the scope of the reaction with regards to solvent and the substrate. We also investigated the electronic dependence of the reaction by analysing the relationship between the rate and Hammett constant. Sufficient steric bulk is required to enforce the catalytic reaction to proceed through the mono-coordinated palladium species, thereby increasing its reactivity. The electronic properties determine the concentration of the active species from the monomer dimer equilibrium and their intrinsic reactivity. The cyclic phosphoramidite 3b provides an optimum in both properties within the systems studied, resulting in a rate limiting migratory insertion step. Copyright
Ambiphilic compounds: Synthesis and structure of a phosphane-borane with a flexible diphenyl ether tether
Bebbington, Magnus W. P.,Bouhadir, Ghenwa,Bourissou, Didier
, p. 4483 - 4486 (2008/02/12)
The preparation of desired phosphane-borane 1 involves selective lithiation trapping of 2-bromo-2′-iododiphenyl ether 3 to give bromophosphane 4 followed by a second lithiation/electrophilic trapping to install the boron fragment. The structure of the new
Organolithium displacement of aryl anions from tertiary phosphine derivatives of diphenyl ether
Levy, Jack B.,Walton, Richard C.,Olsen, Ron E.,Symmes Jr., Courtland
, p. 545 - 548 (2007/10/03)
Methyllithium displaces a phenyl anion from 10-phenyl-10H-phenoxaphosphine to produce a 70:30 mixture of 10-methyl-10H-phenoxaphosphine and starting phosphine. Butyllithium gives 50% conversion to 10-butyl-10H-phenoxaphosphine. These reactions could take place either by a one-step nucleophilic displacement or by ring cleavage followed by recyclization. To show the feasibility of the two-step process, non-heterocyclic lithiated tertiary phosphines were generated and shown to cyclize to phenoxaphosphines. For example, reaction of 2-phenoxyphenyldiphenylphospnine with phenyllithium produced 10-phenyl-10H-phenoxaphosphine (by lithiation ortho to oxygen followed by cyclization) along with triphenylphosphine (by direct displacement of 2-lithiodiphenyl ether). Other compounds prepared in this work: 2,2′-bis(diphenylphosphino)-diphenyl ether, bis(2-phenoxyphenyl)phenylphospnine, tris(2-phenoxyphenyl)phosphine, 4-carboxy-10-phenyl-10H-phenoxaphosphine, and the oxides and sulfides of the phosphines.
