Log in

Relevant bibliographies by topics / Diphosphines synthesis / Journal articles

To see the other types of publications on this topic, follow the link: Diphosphines synthesis.

Journal articles on the topic 'Diphosphines synthesis'

Author: Grafiati

Published: 21 December 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Diphosphines synthesis.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Thomson, RJ, WR Jackson, D. Haarburger, EI Klabunovsky, and VA Pavlov. "The Stereochemistry of Organometallic Compounds. XXIX. Synthesis of Steroidal 1,4-Diphosphine, 1,3-Diphosphine and 1,6-Diphosphine and Their Evaluation as Ligands in Metal Catalyzed Asymmetric Synthesis." Australian Journal of Chemistry 40, no. 6 (1987): 1083. http://dx.doi.org/10.1071/ch9871083.

Full text

Abstract:

The steroidal 1,4-diphosphines 3α- and 3β-diphenylphosphino-2a-(2'-diphenylphosphinoethyl)-5α-cholestanes and their 5H-benzo[b] phosphindole derivatives have been prepared and shown to be useful ligands in asymmetric hydrogenation reactions. Interestingly the 3α- and 3β-derivatives lead to opposing enantioselection preferences when used in these reactions. A steroidal 1,3-diphosphine, 3α-diphenylphosphino-2α-diphenylphosphinomethyl-5α-cholestane, has been prepared as a mixture containing some of the 3β-epimer. The 3α-1,3-diphosphine led to similar enantioselection in hydrogenation reactions as the 3α-1,4-diphosphine, and a model is proposed to explain the sense of the enantioselectivity in the 1,4- and 1,3-diphosphines. A steroidal 1,6-diphosphine has also been prepared but leads to lower optical yields in the hydrogenation reactions. These ligands have been shown to lead to only poor to moderate optical yields when used in asymmetric carbon-carbon bond forming reactions.

APA, Harvard, Vancouver, ISO, and other styles

2

Ahmed S. M. Al-Janabi, Hayfa Muhammed Jerjes, and Mohammed H. Salah. "Synthesis and characterization of new metal complexes of thione and phosphines Ligands." Tikrit Journal of Pure Science 22, no. 9 (February 1, 2023): 53–57. http://dx.doi.org/10.25130/tjps.v22i9.875.

Full text

Abstract:

The complexes containing mixed of ligands [5-(3-chlorophenyl) -1,3,4-oxadiazole-2-thione(CPoxSH)] and diphosphines Ph2P(CH2)nPPh2 (diphos)(n=1-4), are prepared by the reaction of [Hg(CPoxS)2] or [M(H2O)2(CPoxS)2] (M = Co, Ni ) with one mole proportion of the diphosphine Ph2P(CH2)nPPh2 gave tetrahedral complexes of the type [Hg(CPoxS)2(diphos)]. While gave an octahedral complexes with cobalt(II) and nickel(II) ions of the type [M(H2O)(CPoxS)2(diphos)] when (M = Co and Ni ) receptivity. The prepared complexes were characterized by molar conductivity, elemental analysis, IR, 1H, 13C-{1H} and 31P-{1H} n.m.r.

APA, Harvard, Vancouver, ISO, and other styles

3

Quirmbach, Michael, Jens Holz, Vitali I. Tararov, and Armin Börner. "Synthesis of Heterofunctionalized Multidentate Diphosphines." Tetrahedron 56, no. 5 (January 2000): 775–80. http://dx.doi.org/10.1016/s0040-4020(99)01075-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Lee, Kyounghoon, Courtney M. Donahue, and Scott R. Daly. "Triaminoborane-bridged diphosphine complexes with Ni and Pd: coordination chemistry, structures, and ligand-centered reactivity." Dalton Transactions 46, no. 29 (2017): 9394–406. http://dx.doi.org/10.1039/c7dt02144e.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Zablocka, Maria, Nathalie Cénac, Alain Igau, Bruno Donnadieu, Jean-Pierre Majoral, Aleksandra Skowronska, and Philippe Meunier. "Regioselective Synthesis of Tricyclic 1,1-Diphosphines." Organometallics 15, no. 25 (January 1996): 5436–38. http://dx.doi.org/10.1021/om960545v.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Zhou, Jianrong Steve, Siyu Guo, Xiaohu Zhao, and Yonggui Robin Chi. "Nickel-catalyzed enantioselective umpolung hydrogenation for stereoselective synthesis of β-amido esters." Chemical Communications 57, no. 87 (2021): 11501–4. http://dx.doi.org/10.1039/d1cc05257h.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Louise Hazeland, E., Andy M. Chapman, Paul G. Pringle, and Hazel A. Sparkes. "A one-step, modular route to optically-active diphos ligands." Chemical Communications 51, no. 50 (2015): 10206–9. http://dx.doi.org/10.1039/c5cc03517a.

Full text

Abstract:

A chlorosilane elimination reaction has been developed that allows the efficient synthesis of optically pure C₁-symmetric, C₁-backboned diphosphines with a wide variety of stereoelectronic characteristics.

APA, Harvard, Vancouver, ISO, and other styles

8

Burck, Sebastian, Imre Hajdók, Martin Nieger, Denis Bubrin, Simon Schulze, Dietrich Gudat, and Dietrich Gudat. "Activation of Polarized Phosphorus–Phosphorus Bonds by Alkynes: Rational Synthesis of Unsymmetrical 1,2-Bisphosphine Ligands and Their Complexes." Zeitschrift für Naturforschung B 64, no. 1 (January 1, 2009): 63–72. http://dx.doi.org/10.1515/znb-2009-0109.

Full text

Abstract:

The reactions of 1,1-diamino-2,2-diphenyl-substituted diphosphines featuring various degrees of P-P bond polarization with different alkynes were investigated. All diphosphines reacted with alkynes carrying one or two electron withdrawing carboxylic ester moieties under cleavage of the P-P bond and stereospecific phosphinyl-phosphination at the triple bond to give unsymmetrical ethane-1,2- bisphosphines. Several of the products were further converted into chelate complexes upon reaction with group-10 metal dihalides. All isolated compounds were characterized by analytical and spectroscopic data, and several of the new ligands and complexes by single-crystal X-ray diffraction studies.

APA, Harvard, Vancouver, ISO, and other styles

9

Knopf, Ioana, Daniel Tofan, Dirk Beetstra, Abdulaziz Al-Nezari, Khalid Al-Bahily, and Christopher C. Cummins. "A family of cis-macrocyclic diphosphines: modular, stereoselective synthesis and application in catalytic CO2/ethylene coupling." Chemical Science 8, no. 2 (2017): 1463–68. http://dx.doi.org/10.1039/c6sc03614g.

Full text

Abstract:

The stereoselective synthesis of a family of cis-macrocyclic diphosphines was achieved in only three steps from white phosphorus and commercial materials. These new ligands showed activity in the nickel-catalyzed coupling of CO₂ and ethylene.

APA, Harvard, Vancouver, ISO, and other styles

10

Alder, Roger W., and David Read. "Medium-ring diphosphines: synthesis and transannular chemistry." Coordination Chemistry Reviews 176, no. 1 (September 1998): 113–33. http://dx.doi.org/10.1016/s0010-8545(98)00114-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Arisawa, Mieko. "Transition-Metal-Catalyzed Synthesis of Organophosphorus Compounds Involving P–P Bond Cleavage." Synthesis 52, no. 19 (July 7, 2020): 2795–806. http://dx.doi.org/10.1055/s-0040-1707890.

Full text

Abstract:

Organophosphorus compounds are used as drugs, pesticides, detergents, food additives, flame retardants, synthetic reagents, and catalysts, and their efficient synthesis is an important task in organic synthesis. To synthesize novel functional organophosphorus compounds, transition-metal-catalyzed methods have been developed, which were previously considered difficult because of the strong bonding that occurs between transition metals and phosphorus. Addition reactions of triphenylphosphine and sulfonic acids to unsaturated compounds in the presence of a rhodium or palladium catalyst lead to phosphonium salts, in direct contrast to the conventional synthesis involving substitution reactions of organohalogen compounds. Rhodium and palladium complexes catalyze the cleavage of P–P bonds in diphosphines and polyphosphines and can transfer organophosphorus groups to various organic compounds. Subsequent substitution and addition reactions proceed effectively, without using a base, to provide various novel organophosphorus compounds.1 Introduction2 Transition-Metal-Catalyzed Synthesis of Phosphonium Salts by Addition Reactions of Triphenylphosphine and Sulfonic Acids3 Rhodium-Catalyzed P–P Bond Cleavage and Exchange Reactions4 Transition-Metal-Catalyzed Substitution Reactions Using Diphosphines4.1 Reactions Involving Substitution of a Phosphorus Group by P–P Bond Cleavage4.2 Related Substitution Reactions of Organophosphorus Compounds4.3 Substitution Reactions of Acid Fluorides Involving P–P Bond Cleavage of Diphosphines5 Rhodium-Catalyzed P–P Bond Cleavage and Addition Reactions6 Rhodium-Catalyzed P–P Bond Cleavage and Insertion Reactions Using Polyphosphines7 Conclusions

APA, Harvard, Vancouver, ISO, and other styles

12

Arisawa, Mieko, and Masahiko Yamaguchi. "Transition-metal-catalyzed synthesis of organosulfur compounds." Pure and Applied Chemistry 80, no. 5 (January 1, 2008): 993–1003. http://dx.doi.org/10.1351/pac200880050993.

Full text

Abstract:

Rhodium complexes are efficient catalysts for the synthesis of organosulfur compounds. They catalyze the addition reaction of organosulfur groups to unsaturated compounds, the substitution of C-H with organosulfur groups, and single-bond metathesis reactions. They cleave S-S bonds and transfer the organosulfur groups to various organic and inorganic molecules, including alkynes, allenes, disulfides, sulfur, isonitriles, imines, diphosphines, thiophosphinites, hydrogen, 1-alkylthio-1-alkynes, thioesters, and allyl sulfides.

APA, Harvard, Vancouver, ISO, and other styles

13

ZABLOCKA, M., N. CENAC, A. IGAU, B. DONNADIEU, J. P. MAJORAL, A. SKOWRONSKA, and P. MEUNIER. "ChemInform Abstract: Regioselective Synthesis of Tricyclic 1,1-Diphosphines." ChemInform 28, no. 14 (August 4, 2010): no. http://dx.doi.org/10.1002/chin.199714142.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Cazorla, Clément, Lorenzo Casimiro, Tanzeel Arif, Claire Deo, Nawel Goual, Pascal Retailleau, Rémi Métivier, et al. "Synthesis and properties of photoswitchable diphosphines and gold(i) complexes derived from azobenzenes." Dalton Transactions 50, no. 21 (2021): 7284–92. http://dx.doi.org/10.1039/d1dt01080h.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Guillaneux, Denis, Lars Martiny, and Henri B. Kagan. "Diferrocenylphosphine: A Facile Synthesis and Its Use to Prepare Chiral Phosphines." Collection of Czechoslovak Chemical Communications 65, no. 5 (2000): 717–28. http://dx.doi.org/10.1135/cccc20000717.

Full text

Abstract:

Diferrocenylphosphine-borane has been synthesized in three steps from monolithio- ferrocene. This compound may be transformed into the corresponding phosphide which is a nucleophilic reagent allowing to introduce the diferrocenylphosphino grouping in organic compounds. Several chiral diphosphines related to DIOP have been synthesized by this method. The corresponding rhodium complexes are catalysts in the hydrogenation of various C=C double bonds.

APA, Harvard, Vancouver, ISO, and other styles

16

Molitor, Sebastian, Christoph Mahler, and Viktoria H. Gessner. "Synthesis and solid-state structures of gold(i) complexes of diphosphines." New Journal of Chemistry 40, no. 7 (2016): 6467–74. http://dx.doi.org/10.1039/c6nj00786d.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Icsel, Ceyda, Veysel T. Yilmaz, Muhittin Aygun, Buse Cevatemre, Pinar Alper, and Engin Ulukaya. "Palladium(ii) and platinum(ii) saccharinate complexes with bis(diphenylphosphino)methane/ethane: synthesis, S-phase arrest and ROS-mediated apoptosis in human colon cancer cells." Dalton Transactions 47, no. 33 (2018): 11397–410. http://dx.doi.org/10.1039/c8dt02389a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Yorimitsu, Hideki. "Homolytic substitution at phosphorus for C–P bond formation in organic synthesis." Beilstein Journal of Organic Chemistry 9 (June 28, 2013): 1269–77. http://dx.doi.org/10.3762/bjoc.9.143.

Full text

Abstract:

Organophosphorus compounds are important in organic chemistry. This review article covers emerging, powerful synthetic approaches to organophosphorus compounds by homolytic substitution at phosphorus with a carbon-centered radical. Phosphination reagents include diphosphines, chalcogenophosphines and stannylphosphines, which bear a weak P–heteroatom bond for homolysis. This article deals with two transformations, radical phosphination by addition across unsaturated C–C bonds and substitution of organic halides.

APA, Harvard, Vancouver, ISO, and other styles

19

Ruiz, Javier, Víctor Riera, Marilín Vivanco, Maurizio Lanfranchi, and Antonio Tiripicchio. "Metal-Assisted Synthesis of New and Highly Functionalized Diphosphines." Organometallics 17, no. 18 (August 1998): 3835–37. http://dx.doi.org/10.1021/om980448x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Alder, Roger W., and David Read. "ChemInform Abstract: Medium-Ring Diphosphines: Synthesis and Transannular Chemistry." ChemInform 30, no. 12 (June 17, 2010): no. http://dx.doi.org/10.1002/chin.199912333.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Guerrero, Miguel, Nguyet Trang Thanh Chau, Alain Roucoux, Audrey Nowicki-Denicourt, Eric Monflier, Hervé Bricout, and Karine Philippot. "Organometallic synthesis of water-soluble ruthenium nanoparticles in the presence of sulfonated diphosphines and cyclodextrins." MRS Proceedings 1675 (2014): 219–25. http://dx.doi.org/10.1557/opl.2014.888.

Full text

Abstract:

ABSTRACTThe organometallic approach was successfully applied to synthesize water-soluble ruthenium nanoparticles displaying interesting catalytic properties in hydrogenation of unsaturated model-substrates. Nanocatalyst synthesis was performed by hydrogenation of the complex [Ru(COD)(COT)] in the presence of sulfonated diphosphines and cyclodextrins as protective agents providing very small ruthenium nanoparticles (ca. 1.2-1.5 nm) with narrow size distribution and high stability. Catalysis results in water evidenced a control of the surface properties of these novel ruthenium nanocatalysts at a supramolecular level.

APA, Harvard, Vancouver, ISO, and other styles

22

Vavasori, Andrea, Loris Calgaro, Luca Pietrobon, and Lucio Ronchin. "The coupling of carbon dioxide with ethene to produce acrylic acid sodium salt in one pot by using Ni(II) and Pd(II)-phosphine complexes as precatalysts." Pure and Applied Chemistry 90, no. 2 (February 23, 2018): 315–26. http://dx.doi.org/10.1515/pac-2017-0706.

Full text

Abstract:

Abstract The use of CO2 as a feedstock for chemical synthesis is considered as a viable alternative option to some traditional processes. One of the most interesting challenge for the industry is represented by the CO2 coupling with olefins to produce acrylate. Only recently, with the choice of suitable ligands and the use of a sacrificial base, a selective catalytic reaction was established by using Ni(0)-based complexes. The one-pot reaction, which leads to the highest TON (107 mol/mol Ni, in 20 h) reported so far, was successfully developed starting from Ni(0)-based precursors in the presence of disphosphine ligands, a large excess of base and of finely powdered zinc. In the present paper, we carried out the catalytic synthesis of sodium acrylate from CO2 and ethene, in one-pot, by using Ni(II)-chloride and Pd(II)-chloride phosphine-complexes as precatalyst. The reaction occurs under basic conditions and without adding any external reductants. The Ni(II) complexes lead to higher TON than the respective Pd(II) precursors and the best results are obtained by using diphosphines having high bite angles. Such catalysis is favored by aprotic and polar solvents in which a TON of 290 mol/mol Ni is reached by using the [NiCl2(dppp)] precursor in DMSO. Furthermore the TON could be increased by increasing the temperature, the base concentration and by using diphosphine ligands having high bite angle.

APA, Harvard, Vancouver, ISO, and other styles

23

Lobana, T. S., and Randhir Singh. "Synthesis of ruthenium (II) complexes containing diphosphines and 2-pyridinethiols." Proceedings / Indian Academy of Sciences 106, no. 3 (June 1994): 797. http://dx.doi.org/10.1007/bf02911147.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Longeau, Alexia, Sandrine Durand, Anja Spiegel, and Paul Knochel. "Synthesis of new C2-symmetrical diphosphines using chiral zinc organometallics." Tetrahedron: Asymmetry 8, no. 7 (April 1997): 987–90. http://dx.doi.org/10.1016/s0957-4166(97)00052-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Samuels, M. C., F. J. L. Heutz, A. Grabulosa, and P. C. J. Kamer. "Solid-Phase Synthesis and Catalytic Screening of Polystyrene Supported Diphosphines." Topics in Catalysis 59, no. 19-20 (August 25, 2016): 1793–99. http://dx.doi.org/10.1007/s11244-016-0700-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Förstera, Daniela, Ingo Hartenbach, Martin Nieger, and Dietrich Gudat. "On the Synthesis and Addition Reactions of Chiral N-Heterocyclic Diphosphines." Zeitschrift für Naturforschung B 67, no. 8 (August 1, 2012): 765–73. http://dx.doi.org/10.5560/znb.2012-0177.

Full text

Abstract:

Reaction of chiral N-heterocyclic chlorophosphines with lithium diphenylphosphide or of achiral N-heterocyclic chlorophosphines with optically active lithium menthyl phosphide produces chiral N-heterocyclic diphosphines which can be utilized in subsequent diphosphination reactions with activated alkenes or alkynes. The reaction with alkynes proceeds stereospecifically to produce Zethylene- 1,2-bisphosphines which are readily converted to nickel(II) or palladium(II) complexes. Reactions with alkenes are synthetically less useful as the addition proceeds without any chiral induction at the newly formed stereocenters to yield inseparable mixtures of diastereomeric products. The molecular structures of chiral Z-ethylene-1,2-bisphosphine complexes and of a chiral N-heterocyclic chlorophosphine have been determined by single-crystal X-ray diffraction

APA, Harvard, Vancouver, ISO, and other styles

27

Noyori, Ryoji, Masatoshi Koizumi, Dai Ishii, and Takeshi Ohkuma. "Asymmetric hydrogenation via architectural and functional molecular engineering." Pure and Applied Chemistry 73, no. 2 (January 1, 2001): 227–32. http://dx.doi.org/10.1351/pac200173020227.

Full text

Abstract:

RuCl2 (phosphine) 2 (1,2-diamine) complexes, coupled with an alkaline base in 2-propanol, allows for preferential hydrogenation of a C=O function over coexisting conjugated or nonconjugated C=C linkages, a nitro group, halogen atoms, and various heterocycles. The functional group selectivity is based on the novel metal-ligand bifunctional mechanism. The use of appropriate chiral diphosphines and diamines results in rapid and productive asymmetric hydrogenation of a range of aromatic, hetero-aromatic, and olefinic ketones. The versatility of this method is manifested by the asymmetric synthesis of various biologically significant chiral compounds.

APA, Harvard, Vancouver, ISO, and other styles

28

Nieczypor, Piotr, Piet W. N. M. van Leeuwen, Johannes C. Mol, Martin Lutz, and Anthony L. Spek. "Synthesis, structure, and metathesis activity of ruthenium carbene complexes containing diphosphines." Journal of Organometallic Chemistry 625, no. 1 (April 2001): 58–66. http://dx.doi.org/10.1016/s0022-328x(00)00875-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Kremer, Carlos, Mario Rivero, Eduardo Kremer, Leopoldo Suescun, Alvaro W. Mombrú, Raúl Mariezcurrena, Sixto Domı́nguez, Alfredo Mederos, Stefano Midollini, and Alfonso Castiñeiras. "Synthesis, characterization and crystal structures of rhenium(V) complexes with diphosphines." Inorganica Chimica Acta 294, no. 1 (November 1999): 47–55. http://dx.doi.org/10.1016/s0020-1693(99)00272-8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Diéguez, Montserrat, Oscar Pàmies, Aurora Ruiz, Sergio Castillón, and Carmen Claver. "Synthesis of novel diphosphines from d-(+)-glucose. Use in asymmetric hydrogenation." Tetrahedron: Asymmetry 11, no. 23 (December 2000): 4701–8. http://dx.doi.org/10.1016/s0957-4166(00)00440-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Bonnafoux, Laurence, Rafael Gramage-Doria, Françoise Colobert, and Frédéric R. Leroux. "Catalytic Palladium Phosphination: Modular Synthesis of C1-Symmetric Biaryl-Based Diphosphines." Chemistry - A European Journal 17, no. 39 (August 18, 2011): 11008–16. http://dx.doi.org/10.1002/chem.201101529.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

RUIZ, J., V. RIERA, M. VIVANCO, M. LANFRANCHI, and A. TIRIPICCHIO. "ChemInform Abstract: Metal-Assisted Synthesis of New and Highly Functionalized Diphosphines." ChemInform 30, no. 1 (June 18, 2010): no. http://dx.doi.org/10.1002/chin.199901177.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Pellon, Pascal, Celine Le Goaster, and Loic Toupet. "Diastereoselective synthesis of diphosphines, effect of their configuration in asymmetric catalysis." Tetrahedron Letters 37, no. 27 (July 1996): 4713–16. http://dx.doi.org/10.1016/0040-4039(96)00948-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Macêdo, R. R., P. I. S. Maia, V. M. Deflon, G. F. de S. Miguel, A. E. H. Machado, and G. v. Poelhsitz. "Synthesis and characterization of CIS-[Ru(DPPM)2(BTA)]PF6 (BTA– = 4,4,4-trifluoro-1-phenyl-1,3-butanedionate)." Журнал структурной химии 64, no. 4 (2023): 108210. http://dx.doi.org/10.26902/jsc_id108210.

Full text

Abstract:

The title complex cis-[Ru(dppm)2(bta)]PF6, dppm = 1,1-bis(diphenylphosphino)methane; bta– = 4,4,4-trifluoro-1-phenyl-1,3-butanedionate, was prepared from the cis-[RuCl2(dppm)2] precursor in mild conditions. Elemental analysis, spectroscopy (FTIR, 1H, 31P{1H} and 19F{1H} NMR) as well as single-crystal X-ray diffraction were used to characterize the new complex. Electronic structure of the complex was described utilizing TD-DFT analysis. All data indicate a good degree of purity, a cis arrangement for the diphosphines and a distorted geometry for the ruthenium center.

APA, Harvard, Vancouver, ISO, and other styles

35

Spiridonova, Yu S., I. A. Litvinov, E. I. Musina, and A. A. Karasik. "N,O-, N,N-, N,S- AND N,N,S-HETEROCYCLES WITH AN EXOCYCLIC AMINOGROUP IN THE SYNTHESIS OF 1,5,3,7-DIAZADIPHOSPHACYCLOOCTANES." Доклады Российской академии наук. Химия, науки о материалах 510, no. 1 (May 1, 2023): 40–47. http://dx.doi.org/10.31857/s2686953522600386.

Full text

Abstract:

New 1,5,3,7-diazadiphosphacyclooctanes with N,O-, N,N-, N,S- and N,N,S-heterocyclic substituents at nitrogen atoms were synthesized. The influence of amines containing sp2-hybridized nitrogen atom on the ortho-position of the heterocyclic substituent on the result of a Mannich condensation of primary phosphines, paraformaldehyde and primary amines is revealed. The stabilization of intermediate acyclic products – aminomethyl(hydroxymethyl)arylphosphines and bis(aminomethyl)arylphosphines due to amino-imine tautomerism is a reason of the low yield of cyclic diphosphines on the base of above mentioned amines.

APA, Harvard, Vancouver, ISO, and other styles

36

Xie, Jian-Hua, Li-Xin Wang, Yu Fu, Shuo-Fei Zhu, Bao-Min Fan, Hai-Feng Duan, and Qi-Lin Zhou. "Synthesis of Spiro Diphosphines and Their Application in Asymmetric Hydrogenation of Ketones." Journal of the American Chemical Society 125, no. 15 (April 2003): 4404–5. http://dx.doi.org/10.1021/ja029907i.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Buhling, Armin, Jaap W. Elgersma, Steve Nkrumah, Paul C. J. Kamer, and Piet W. N. M. van Leeuwen. "Novel amphiphilic diphosphines: synthesis, rhodium complexes, use in hydroformylation and rhodium recycling." Journal of the Chemical Society, Dalton Transactions, no. 10 (1996): 2143. http://dx.doi.org/10.1039/dt9960002143.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Ma, Meng-Lin, Zong-Hai Peng, Li Chen, Yu Guo, Hua Chen, and Xian-Jun Li. "Synthesis of New MeO-BIPHEP-type Chiral Diphosphines by an Improved Way." Chinese Journal of Chemistry 24, no. 10 (October 2006): 1391–96. http://dx.doi.org/10.1002/cjoc.200690260.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Tagne Kuate, Alain C., Roger A. Lalancette, Dirk Bockfeld, Matthias Tamm, and Frieder Jäkle. "Palladium(0) complexes of diferrocenylmercury diphosphines: synthesis, X-ray structure analyses, catalytic isomerization, and C–Cl bond activation." Dalton Transactions 50, no. 13 (2021): 4512–18. http://dx.doi.org/10.1039/d1dt00641j.

Full text

Abstract:

In trigonal LPd⁰(dba) complexes with diastereomeric diferrocenylmercury diphosphine ligands the Pd environment and Hg⋯Pd separation are starkly different. The rates of Pd⁰ complex formation and their CH₂Cl₂ oxidative addition vary significantly.

APA, Harvard, Vancouver, ISO, and other styles

40

Zhao, Kai-Chun, Lei Liu, Xiao-Chao Chen, Yin-Qing Yao, Lin Guo, Yong Lu, Xiao-Li Zhao, and Ye Liu. "Multiple-Functional Diphosphines: Synthesis, Characterization, and Application to Pd-Catalyzed Alkoxycarbonylation of Alkynes." Organometallics 41, no. 6 (March 16, 2022): 750–60. http://dx.doi.org/10.1021/acs.organomet.1c00713.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Brunet, Jean-Jacques, Montserrat Gómez, Hassane Hajouji, and Denis Neibecker. "CHIRAL DIPHOSPHOLES 4. SYNTHESIS AND NMR STUDY OF PHOSPHOLYL-BASED OPTICALLY ACTIVE DIPHOSPHINES." Phosphorus, Sulfur, and Silicon and the Related Elements 85, no. 1-4 (December 1993): 207–15. http://dx.doi.org/10.1080/10426509308038200.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Morandini, Franco, and Giambattista Consiglio. "Synthesis, characterisation and stereochemistry of indenyl complexes of iridium(I) containing chiral diphosphines." Inorganica Chimica Acta 258, no. 1 (May 1997): 77–80. http://dx.doi.org/10.1016/s0020-1693(96)05535-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Bergamini, Paola, Giancarlo Fantin, Marco Fogagnolo, Licia Gualandi, and Alessandro Medici. "New chiral diphosphines by ketalization of bile acid derivatives: synthesis and chelating properties." Inorganic Chemistry Communications 1, no. 4 (April 1998): 125–27. http://dx.doi.org/10.1016/s1387-7003(98)00032-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Diéguez, Montserrat, Oscar Pàmies, Aurora Ruiz, and Carmen Claver. "Synthesis and structural studies of rhodium(I)-catalytic precursors containing two furanoside diphosphines." Journal of Organometallic Chemistry 629, no. 1-2 (June 2001): 77–82. http://dx.doi.org/10.1016/s0022-328x(01)00819-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Kottsieper, Konstantin W., Uwe Kühner, and Othmar Stelzer. "Synthesis of enantiopure C1 symmetric diphosphines and phosphino-phosphonites with ortho-phenylene backbones." Tetrahedron: Asymmetry 12, no. 8 (May 2001): 1159–69. http://dx.doi.org/10.1016/s0957-4166(01)00175-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Huang, Yinhua, Sumod A. Pullarkat, Mingjun Yuan, Yi Ding, Yongxin Li, and Pak-Hing Leung. "Palladium Template Promoted Asymmetric Synthesis of 1,2-Diphosphines by Hydrophosphination of Functionalized Allenes." Organometallics 29, no. 3 (February 8, 2010): 536–42. http://dx.doi.org/10.1021/om900829t.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Morandini, Franco, Giuseppe Pilloni, Giambattista Consiglio, and Antonio Mezzetti. "Synthesis and Characterization of Cationic Square-Planar Iridium(I) Complexes Containing Chiral Diphosphines." Organometallics 14, no. 7 (July 1995): 3418–22. http://dx.doi.org/10.1021/om00007a048.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Abreu, Artur R., Andreia F. Peixoto, Ana R. Almeida, Mirtha A. O. Lourenço, Ângela C. B. Neves, J. Carles Bayón, and Mariette M. Pereira. "Synthesis of Chiral Bis-MOP-type Diphosphines. Chelating Effect in Nickel-catalyzed Phosphination." Chemistry Letters 42, no. 1 (January 5, 2013): 37–39. http://dx.doi.org/10.1246/cl.2013.37.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Köllner, Christoph, and Antonio Togni. "Synthesis, characterization, and application in asymmetric catalysis of dendrimers containing chiral ferrocenyl diphosphines." Canadian Journal of Chemistry 79, no. 11 (November 1, 2001): 1762–74. http://dx.doi.org/10.1139/v01-145.

Full text

Abstract:

Starting from the functionalized Josiphos derivatives (R)-1-[(S)-2-(diphenylphosphino)-1'-(dimethyl-3''-aminopropylsilyl)-ferrocenyl]ethyldicyclohexylphosphine ((R)-(S)-3), (R)-1-[(S)-2-(diphenylphosphino)-1'-(hydroxy methyl) ferrocenyl]ethyldicyclohexylphosphine ((R)-(S)-4), and (R)-1-[(S)-2-(diphenylphosphino)-1'-(3''-hydroxy propyl)ferrocenyl]ethyldicyclohexylphosphine ((R)-(S)-5), a series of dendrimers containing up to sixteen ferrocenyl diphosphine units were prepared. Dendrimer cores are based on benzene 1,3,5-tricarboxylic acid and 1,3,5,7-adaman tanetetracarboxylic acid, with 5-substituted isophthalic acid derivatives constituting the branching units. The dendrimers have been used in three different asymmetric catalytic reactions: Rh-catalyzed hydrogenation of dimethyl itaconate, Pd-catalyzed allylic substitution, and Rh-catalyzed hydroboration of styrene with catecholborane. In all three reactions the selectivity obtained with the dendrimers was very similar to the one obtained with the parent ligand Josiphos.Key words: dendrimer, asymmetric catalysis, ferrocenyl ligands, hydrogenation.

APA, Harvard, Vancouver, ISO, and other styles

50

PELLON, P., C. LE GOASTER, and L. TOUPET. "ChemInform Abstract: Diastereoselective Synthesis of Diphosphines, Effect of Their Configuration in Asymmetric Catalysis." ChemInform 27, no. 41 (August 4, 2010): no. http://dx.doi.org/10.1002/chin.199641165.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!