5853-64-5

Upstream product

• 829-85-6 diphenylphosphane 
• 93017-30-2 bis(2-phenethyl)phosphine 
• 7782-49-2 selenium 

Downstream Products

• 109011-99-6 (C₅H₅)2Ti(Se₂P(C₆H₅)2) 
• 1092729-99-1 2-(pentylselanyl)ethyl(diphenyl)phosphine selenide 
• 1092730-03-4 2-(Hexylselanyl)ethyl(diphenyl)phosphine selenide 
• 1019915-12-8 diphenylphosphinodiselenoic acid potassium salt 
• 7439-92-1 lead 
• 896711-74-3 (C₆H₅)2PSe₂PbSe₂P(C₆H₅)2 
• 1319805-27-0 [2-(1H-imidazol-1-yl)ethyl]diphenylphosphine selenide 
• 1319805-28-1 [2-(1H-benzo[d]imidazol-1-yl)ethyl]diphenylphosphine selenide 
• 1355248-36-0 diphenylphosphinoselenoic acid O-1-naphthyl ester 
• 1241411-12-0 C₃₀H₄₃O₂P 
• 952050-96-3 P,P-diphenyl-N-benzyl phosphinoselenoic amide 
• 829-85-6 diphenylphosphane 

Relevant academic research and scientific papers

Metal-free SHNcross-coupling of pyridines with phosphine chalcogenides: polarization/deprotonation/oxidation effects of electron-deficient acetylenes

Terminal acylacetylenes, typical electron-deficient acetylenes, drive SHNcross-coupling of pyridines with secondary phosphine chalcogenides under metal-free mild conditions (20-75 °C) to afford 4-chalcogenophosphorylpyridines in up to 70% yield. The reaction proceedsvia2,4-migration of chalcogenophosphoryl groups in the intermediate 1-acylvinyl-2-phosphoryl dihydropyridines with simultaneous redox elimination of the vinyl ketone oligomers. These results are generalized in a concept of trimodal (polarization/deprotonation/oxidation) catalyst-like assistance of electron-deficient acetylenes in SHNreaction of the pyridinoid heterocycles with PH-nucleophiles, which comprises: (i) repolarization (umpolung) of the pyridine ring, (ii) deprotonation of secondary phosphine chalcogenides to generate phosphorus-centered anions and (iii) oxidation of the dihydro intermediates.

Synthesis of Phosphine Chalcogenides Under Solvent-Free Conditions Using a Rotary Ball Mill

The mechanochemical technique of ball milling has been applied to the solventless and eco-friendly synthesis of chalcogenides (sulfide and selenide) of a variety of tertiary and aminophosphines. In most of the cases, the products are obtained in almost quantitative yields with high purity by applying a simple workup procedure without using chromatographic techniques or any other purification methods. The scope of this methodology was explored by using a range of phosphines (mono, di and tetra) to synthesize partial as well as mixed chalcogenides. The use of almost equimolar amounts of starting materials and the absence of any byproducts significantly simplifies the product isolation compared with the standard solution state reactions, thus providing a highly atom economic (100 %) method with an ideal E-factor (E = 0). The solid-state reactions were monitored by 31P{1H} NMR spectroscopy. The structures of some of the products are also confirmed by single-crystal X-ray analyses. Although most of the reactions were carried out on ca. 100-mg scale, the scaling up of the reaction did not affect the course of the reaction.

General and Efficient C-C Bond Forming Photoredox Catalysis with Semiconductor Quantum Dots

Photoredox catalysis has become an essential tool in organic synthesis because it enables new routes to important molecules. However, the best available molecular catalysts suffer from high catalyst loadings and rely on precious metals. Here we show that colloidal nanocrystal quantum dots (QDs) can serve as efficient and robust, precious-metal free, photoassisted redox catalysts. A single-sized CdSe quantum dot (3.0 ± 0.2 nm) can replace several different dye catalysts needed for five different photoredox reactions (β-alkylation, β-aminoalkylation, dehalogenation, amine arylation, and decarboxylative radical formation). Even without optimization of the QDs or the reaction conditions, efficiencies rivaling those of the best available metal dyes were obtained.

Green synthesis of tertiary alkylselanylphosphine chalcogenides via catalyst-and solvent-free addition of secondary phosphine chalcogenides to vinyl selenides

Secondary phosphine sulfides and phosphine selenides react with vinyl selenides under mild conditions (80-82°C, without catalyst and solvent) to form regioselectively functionalized anti-Markovnikov adducts in high yield.

An expedient access to γ-ketophosphine chalcogenides via the chemo-and regioselective addition of secondary phosphine chalcogenides to β,γ-ethylenic ketones

γ-Ketophosphine chalcogenides, precursors for plethora of novel functionalized phosphine chalcogenides and phosphines, are synthesized by chemo-and regioselective addition of secondary phosphine chalcogenides to β,γ-ethylenic ketones under catalyst-and so

Elucidation of two giants: Challenges to thick-shell synthesis in CdSe/ZnSe and ZnSe/CdS Core/shell quantum dots

Core/thick-shell giant quantum dots (gQDs) possessing type II electronic structures exhibit suppressed blinking and diminished nonradiative Auger recombination. We investigate CdSe/ZnSe and ZnSe/CdS as potential new gQDs. We show theoretically and experimentally that both can exhibit partial or complete spatial separation of an excited-state electron-hole pair (i.e., type II behavior). However, we reveal that thick-shell growth is challenged by competing processes: alloying and cation exchange. We demonstrate that these can be largely avoided by choice of shelling conditions (e.g., time, temperature, and QD core identity). The resulting CdSe/ZnSe gQDs exhibit unusual single-QD properties, principally emitting from dim gray states but having high two-exciton (biexciton) emission efficiencies, whereas ZnSe/CdS gQDs show characteristic gQD blinking suppression, though only if shelling is accompanied by partial cation exchange.

DFT study and dynamic NMR evidence for cis-trans conformational isomerism in square planar Ni(II) thioselenophosphinate, Ni(SeSPPh2) 2

Theoretical (DFT) and experimental (dynamic NMR) study of cis-trans conformational isomerism in Ni(II) square planar thioselenophosphinate, Ni(SeSPPh2)2, have been carried out. The DFT investigation [B3LYP/6-311++G(d,p), gas] of this

The formation mechanism of binary semiconductor nanomaterials: Shared by single-source and dual-source precursor approaches

One thing in common: The formation of binary colloidal semiconductor nanocrystals from single- (M(EEPPh2)n) and dual-source precursors (metal carboxylates M(OOCR)n and phosphine chalcogenides such as E=PHPh2) is found to proceed through a common mechanism. For CdSe as a model system 31Pa NMR spectroscopy and DFT calculations support a reaction mechanism which includes numerous metathesis equilibriums and Se exchange reactions. Copyright

Unexpected one-electron oxidation of a secondary phosphite selenide Cp(CO)2FeP(Se)(OiPr)2 by GaCl3 and InCl 3 - Rare examples of Di- and triselenide formation

The reactions of the neutral phosphonoselenoate [Cp(CO)2FeP(Se) (OiPr)2] (1) with Lewis acids (GaCl3, InCl3) produce dicationic complexes [{Cp(CO)2FeP(OiPr)2} 2Sen][GaCl4]2, [n = 2 (2), 3 (3)] and [{Cp(CO)2FeP(OiPr)2}2Sen] [InCl4]2 [n = 2 (4), 3 (5)] in good yields; the complexes comprise an Se3 (or Se2) chain that bridges two FpP(OiPr)2 groups [Fp = Cp(CO)2Fe]. These compounds are the one-electron oxidation products of secondary phosphite selenide 1 by group 13 (Ga, In) trichlorides. On the other hand, the reaction of GaCl3 with (iPrO)2PSe2- (dsep) yields only the Lewis adduct tris(O,O-diisopropyldiselenophosphate)gallium (6). The 31P NMR spectrum of 6 at 183 K reveals that the gallium(III) center is surrounded by one chelating and two pendant dsep ligands, which is in line with the obtained X-ray structure. In addition, the two-electron oxidation of 1 leads to phosphite [Cp(CO)2FeP(O)(OiPr)2] formation. Copyright