26437-48-9

Upstream product

• 17624-36-1 2-pyridyllithium 
• 21970-13-8 (pyridin-2-yl)magnesium bromide 
• 110-86-1 pyridine 
• 109-04-6 2-bromo-pyridine 
• 201230-82-2 carbon monoxide 
• 109-09-1 2-chloropyridine 

Downstream Products

• 366-18-7 [2,2]bipyridinyl 
• 162612-08-0 2-(pyridin-2-yl)-5-chloropyridine 
• 15862-19-8 5-bromo-2,2'-bipyridyl 
• 61864-97-9 dimethyl pyridin-2-yl-2-phosphonate 
• 126963-90-4 benzyltri(pyridin-2-yl)phosphonium bromide 
• 212509-45-0 [Mo(.tplbond.CPh)(CO)2(η(3)-tris(2-pyridyl)phosphine)]BPh4 
• 184651-07-8 [Au(C₆F₅)(tris(2-pyridyl)phosphine-P)] 
• 198287-83-1 [RuCl(PPh₃)2(P,N,N'-P(2-C₅H₄N)3)]PF₆ 
• 186310-75-8 RuCl₂(triphenylphosphine)(N,N',N''-tris(2-pyridyl)phosphine) 
• 198288-13-0 [RuCl(PPh₃)2(P,N,N'-P(2-C₅H₄N)3)]Cl 
• 651351-13-2 (NBu₄)[Pt(C₆F₅)3(P(2-pyridyl)3)] 
• 910128-86-8 [Pd(C₆F₅)(4,4'-dimethyl-2,2'-bipyridine)(P(2-pyridyl)3)]BF₄ 
• 184650-99-5 fac-[Mo(CO)3((tris(2-pyridyl)phosphine)Au(C₆F₅)-N₃)] 
• 1608453-60-6 (E)-3-[di(2-pyridinyl)phosphoryl]-3-phenyl-1-(3-pyridinyl)-2-propen-1-one 

Relevant academic research and scientific papers

Complexation of tris(2-pyridyl)phosphine chalcogenides with copper(I) halides: The selective formation of scorpionate complexes, [Cu(N,N′,N″-2-Py3PX)Hal] (X = O, S and Se)

A series of copper(I) scorpionates, [Cu(N,N′,N″-2-Py3PX)Hal] (X = O, S and Se; Hal = Cl, I), has been synthesized in 67-88% yields by the reaction of tris(2-pyridyl)phosphine chalcogenides with Cu(I) halides (CH2Cl2, r.t., 10 min). These complexes were characterized by X-ray crystallography, NMR and UV-Vis techniques to reveal that the ligand coordinates with Cu(I) ion via three pyridine nitrogen atoms to form near-C3-symmetrical [Cu(N-C)3PX] cage. The halogen atoms are bonded with metal so that the latter adopts a distorted trigonal pyramidal geometry. The DFT computations confirm that the observable κ3-N,N′,N″-binding of the ligands is energetically more favorable than the alternative coordination modes, i.e. κ1-X-monodentate, κ2-N,N′- or κ2-N,X-bidentate and κ3-N,N′,X-tridentate.

Expedient one-pot organometallics-free synthesis of tris(2-pyridyl) phosphine from 2-bromopyridine and elemental phosphorus

2-Bromopyridine reacts with elemental phosphorus (red or white) in a superbasic KOH/DMSO(H2O) suspension at 100 °C (for red phosphorus) and 75 °C (for white phosphorus) over 3 h to afford tris(2-pyridyl)phosphine in a 62% yield (from red phosphorus) and a 50% yield (from white phosphorus). Under microwave assistance, the reaction with red phosphorus takes just 20 min to produce tris(2-pyridyl)phosphine in 53% yield. A hitherto unknown complex, [Pd(PPy3)2Cl 2]·CH2Cl2, synthesized from tris(2-pyridyl)phosphine and PdCl2, has the cis-configuration; this is unusual for bis(phosphino)palladium dichloride complexes.

Synthesis, crystal structures and magnetic properties of two iron (II) tris(pyridyl)phosphine selenides complexes

We reported the synthesis of tris(pyridyl)phosphine selenide (TppSe) and tris(4-methylpyridin-2-yl)phosphine selenide (MeTppSe), which were prepared by a simple and straightforward one-pot method with red phosphorus in a KOH/DMSO suspension, and treatment of resulted phosphines with selenium in hot toluene. These compounds were characterized by mass spectroscopy, 1H, 13C and 31P NMR spectroscopies and the structure of MeTppSe was characterised by a single-crystal X-ray diffraction. Furthermore, The reactions of selenides with Fe(ClO4)2·6H2O afforded two new iron(II) mononuclear metal complexes [Fe(TppSe)2][ClO4]2·3DMF (1) and [Fe(MeTppSe)2][ClO4]2·2DMF (2). Detailed structural analyses and magnetic susceptibility measurements confirm no spin transition from low-spin to the high-spin state between 2 and 300?K in two iron(II) complexes.

The Wittig reaction with pyridylphosphoranes

The Wittig reaction was studied by replacing one, two, or three phenyl rings in the triphenylethylidenephosphorane (8) with pyridyl rings, which were attached in the alpha position. It is shown that when using n- butyllithium as the base, the yield of the Wittig reaction is severely affected and it is proposed that the formation of a betaine salt adduct as intermediate suppresses the formation of oxaphosphetanes. In contrast, with sodium bis(trimethylsilyl)amide as the base, the yields are similar to the reaction with 8, although the Z-selectivity reaches values of over 18:1. The reactions have been monitored by 31p NMR spectroscopy and the position of the pyridyl ring in the oxaphosphetane 4a elucidated by ROESY NMR spectroscopy at low temperatures.

The reaction of 2-bromopyridine with a PH3/H2 system in the KOH/DMSO suspension: A short route to tris(2-pyridyl)phosphine

The straightforward reaction of 2-bromopyridine with a PH 3/H2 system (generated from phosphorus red and aqueous alkali) in the superbasic KOH/DMSO/(H2O) suspension under mild conditions (70°C, 1.5 h, atmospheric pressure) affords selectively and cleanly tris(2-pyridyl)phosphine in 50% yield; no admixtures of the expected primary and secondary pyridylphosphines were observed in the crude product.

Tris(2-pyridyl)phosphine: A straightforward microwave-assisted synthesis from 2-bromopyridine and red phosphorus and coordination with cobalt(ii) dichloride

Microwave irradiation of 2-bromopyridine with red phosphorus in the superbasic KOH/DMSO (H2O) suspension affords tris(2-pyridyl)phosphine in 53% yield; two molecules of tris(2-pyridyl)phosphine coordinate with CoCl2 by their six nitrogen atoms only to form [Co(2-Py 3P)2]Cl2?8H2O complex having two phosphorus atoms beyond the coordination sphere.

High performance solution-processed green phosphorescent organic light-emitting diodes with high current efficiency and long-term stability

In this study, we design and synthesize a new host and two new highly efficient green-emitting heteroleptic Ir(iii) complexes. These new materials are based on an amide-bridged, trifluromethyl-substituted, phenylpyridine skeleton with a longer alkyl chain as the main ligand, and on a phosphine oxide containing symmetrical dipyridinylphosphinate and asymmetrical phenyl(pyridin-2-yl)phosphinate as ancillary ligands. Their thermal, photophysical, electrochemical, and electroluminescent (EL) properties are fully investigated. The solution-processed green devices were fabricated using bis[5-ethylhexyl-8-trifluoromethyl-5H-benzo(c)(1,5)naphthyridin-6-one](dipyridinylphosphinate)iridium(iii) as dopant, and (4′-(9H-carbazol-9-yl)-[1,1′-biphenyl]-4-yl)di-o-tolylphosphine oxide (m-CBPPO1) and TPBi as hosts. The optimized devices containing a symmetrical-type ancillary ligand show excellent EL performance with a maximum current efficiency (CEmax) of 68.72 cd A-1 and a maximum external quantum efficiency (EQEmax) of 20.82% without compromising the color purity. This is one of the best reported CEmax values with high EQE for solution-processed phosphorescent organic light-emitting diodes (PHOLEDs). To the best of our knowledge, this is the first report on green solution-processed PHOLEDs with EQE over 20% by using phosphine oxide functionalized symmetrical type ancillary ligand. Furthermore, these devices with symmetrical Ir(iii) complexes show better device stability than that of asymmetrical Ir(iii) complexes, which is attributed to the formation of undesirable isomers in asymmetrical complexes.

Synthesis, structures and magnetic properties of two iron(ii) tris(pyridyl)phosphine sulfide complexes

Two iron(ii) mononuclear metal complexes with tris(pyridyl)-phosphine sulfides and Fe(ClO4)2·6H2O have been synthesized and characterized. Detailed structural analyses and magnetic susceptibility measurements confirm no spin transition from low-spin to the high-spin state between 2 and 300 K in these complexes.

Synthesis and chemistry of tris(2-pyridyl)phosphine and bis(2-pyridyl)phenylphosphine complexes of mercury(II) X (X = Br, Cl) and X-ray crystal structural determination of [HgBr2(PPh(2-py) 22)22]

Mercury(II) halide complexes [HgX2(P(2-py)3) 2] (X = Br (1), Cl (2)) and [HgX2(PPh(2-py) 2)2] (X = Br (3), Cl (4)) containing P(2-py)3 and PPh(2-py)2 ligands (P(2-py)

Improved synthesis of monodentate and bidentate 2- and 3-pyridylphosphines

Tris(pyridyl)phosphines (2- and 3-pyridyl) and 1,2-bis(di-3-pyridylphosphino)ethane were synthesized in 70-75% yield using a Grignard reagent. The product could be efficiently isolated by solid-liquid extraction with diethylamine.