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Добірка наукової літератури з теми "Tertiary Phosphine Ligands"

Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 30 січня 2023

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Статті в журналах з теми "Tertiary Phosphine Ligands"

1

Sárosi, Imola, Luminiţa Silaghi-Dumitrescu, and Evamarie Hey-Hawkins. "Synthesis and coordination chemistry of thiophenol-based heterodonor ligands containing P,S, As,S and P,SAs donor atoms." Macedonian Journal of Chemistry and Chemical Engineering 32, no. 1 (April 30, 2013): 1. http://dx.doi.org/10.20450/mjcce.2013.285.

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Анотація:
This review article describes the synthesis and coordination chemistry of three types of thiophenol-based heterodonor ligands containing tertiary phosphine and/or arsine groups in combination with sulfur. Phenylthio(diphenyl)phosphine and -arsine ligands, EPh2(SPh) (E = P, As), incorporate an E–S bond in their structures. Upon reaction with different metal carbonyls, metal-mediated cleavage of the E–S bonds of these ligands has been observed, leading to a variety of sulfur- and phosphorus- or arsenic-containing metallacycles. The structurally isomeric phosphino- and arsinoarylthiols HSC6H4-2-EPh2 (ESH) combine a phosphine or arsine centre with a thiol functionality, which is usually deprotonated on coordination. These compounds have been shown to be very versatile ligands that form stable complexes with a wide range of transition metals. The heterotopic ligand 1-Ph2AsSC6H4-2-PPh2 (P,SAs) not only combines the properties of phenylthio(diphenyl)arsine and 2-diphenylphosphanylbenzenethiol by incorporating all three donor atoms in its structure, but also allows the effect of the PPh2 group in the ortho position on the cleavage of the As–S bond to be studied.
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2

Aikawa, Kohsuke, Kohei Yabuuchi, Kota Torii, and Koichi Mikami. "Copper-catalyzed asymmetric methylation of fluoroalkylated pyruvates with dimethylzinc." Beilstein Journal of Organic Chemistry 14 (March 7, 2018): 576–82. http://dx.doi.org/10.3762/bjoc.14.44.

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The catalytic asymmetric methylation of fluoroalkylated pyruvates is shown with dimethylzinc as a methylating reagent in the presence of a copper catalyst bearing a chiral phosphine ligand. This is the first catalytic asymmetric methylation to synthesize various α-fluoroalkylated tertiary alcohols with CF3, CF2H, CF2Br, and n-C n F2 n +1 (n = 2, 3, 8) groups in good-to-high yields and enantioselectivities. Axial backbones and substituents on phosphorus atoms of chiral phosphine ligands critically influence the enantioselectivity. Moreover, the methylation of simple perfluoroalkylated ketones is found to be facilitated by only chiral phosphines without copper.
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3

McKeage, Mark J., Peter Papathanasiou, Geoffrey Salem, Allan Sjaarda, Gerhard F. Swiegers, Paul Waring, and S. Bruce Wild. "Antitumor Activity of Gold(I), Silver(I) and Copper(I) Complexes Containing Chiral Tertiary Phosphines." Metal-Based Drugs 5, no. 4 (January 1, 1998): 217–23. http://dx.doi.org/10.1155/mbd.1998.217.

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The in vitro cytotoxicities of a number of gold(I), silver(I) and copper(I) complexes containing chiral tertiary phosphine ligands have been examined against the mouse tumour cell lines P815 mastocytoma, B16 melanoma [gold(I) and silver(I) compounds] and P388 leukaemia [gold(I) complexes only] with many of the complexes having IC50 values comparable to that of the reference compounds cis-diamminedichloroplatinum(ll), cisplatin, and bis[1,2-bis(diphenylphosphino) ethane]gold(I) iodide. The chiral tertiary phosphine ligands used in this study include (R)-(2-aminophenyl)methylphenylphosphine; (R,R)-, (S,S)- and (R*,R*)-1,2-phenylenebis(methylphenylphosphine); and (R,R)-, (S,S)- and (R*,R*)-bis{(2-diphenylphosphinoethyl)phenylphosphino}ethane. The in vitro cytotoxicities of gold(I) and silver(I) complexes containing the optically active forms of the tetra(tertiary phosphine) have also been examined against the human ovarian carcinoma cell lines 41M and CH1, and the cisplatin resistant 41McisR, CH1cisR and SKOV-3 tumour models. IC50 values in the range 0.01 - 0.04 μM were determined for the most active compounds, silver(I) complexes of the tetra(tertiary phosphine). Furthermore, the chirality of the ligand appeared to have little effect on the overall activity of the complexes: similar IC50 data were obtained for complexes of a particular metal ion with each of the stereoisomeric forms of a specific ligand.
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4

Bruce, Michael I., Ben C. Hall, and Edward R. T. Tiekink. "Reactions of RuCl(C=CHBut)(PPh3)(hC5Me5) with Tertiary Phosphites: Molecular Structure of RuCl{P(OPh)3} 2(h;-C5Me5)." Australian Journal of Chemistry 50, no. 11 (1997): 1097. http://dx.doi.org/10.1071/c97167.

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Анотація:
Reactions between RuCl(C=CHBut)(PPh3)(η-C5Me5) and tertiary phosphites result in displacement of both vinylidene and tertiary phosphine ligands to give RuCl{P(OR)3}2(η-C5Me5) (R = Me, Ph). The crystal and molecular structures of RuCl{P(OPh)3}2(η-C5Me5) are reported.
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5

Ghosh, Sujit, Kinkar Biswas, and Basudeb Basu. "Recent Advances in Microwave Promoted C-P Cross-coupling Reactions." Current Microwave Chemistry 7, no. 2 (August 6, 2020): 112–22. http://dx.doi.org/10.2174/2213335607666200401144724.

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: Organophosphorous compounds are of potential importance in diverse fields. They are often used as intermediates for making functionalized phosphine ligands as well as find vast applications in the areas of industrial, agricultural and biological chemistry. The microwave-assisted synthesis of C-P bonds has become increasingly popular because of its various advantages over conventional heating in the perspectives of green chemistry. : This review article has primarily focused on the synthesis of various organophosphorous molecules via microwave promoted C-P cross-coupling reactions under metal-catalyzed or metal–free conditions over the last two decades. The synthesis of phosphine ligands on 4,4′-bisquinolone structural framework, disubstituted phosphinic acid esters, vinyl phosphines, aryl- and vinylphosphonates, sugar and nucleoside phosphonates, aminobisphosphonates, triphenyl phosphines, water-soluble tertiary phosphine oxides and many other potentially useful organophosphorous compounds have been illustrated critically. The Hirao reaction, Michaelis-Arbuzov reaction and Sandmeyer type of reactions are generally involved in creating C-P bonds. The role of various metal catalysts, solvents, bases, additives and temperature in different literatures are carefully discussed.
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6

Haque, Ashanul, Khalaf M. Alenezi, Hani El Moll, Muhammad S. Khan, and Wai-Yeung Wong. "Synthesis of Mixed Arylalkyl Tertiary Phosphines via the Grignard Approach." Molecules 27, no. 13 (July 1, 2022): 4253. http://dx.doi.org/10.3390/molecules27134253.

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Анотація:
Trialkyl and triaryl phosphines are important classes of ligands in the field of catalysis and materials research. The wide usability of these low-valent phosphines has led to the design and development of new synthesis routes for a variety of phosphines. In the present work, we report the synthesis and characterization of some mixed arylalkyl tertiary phosphines via the Grignard approach. A new asymmetric phosphine is characterized extensively by multi-spectroscopic techniques. IR and UV–Vis spectra of some selected compounds are also compared and discussed. Density functional theory (DFT)-calculated results support the formation of the new compounds.
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7

Hampton, Cashman R. S. M., Ian R. Butler, William R. Cullen, Brian R. James, Jean Pierre Charland, and J. Simpson. "Molecular dihydrogen and hydrido derivatives of ruthenium(II) complexes containing chelating ferrocenyl-based tertiary phosphine amine ligands and/or monodentate tertiary phosphine ligands." Inorganic Chemistry 31, no. 26 (December 1992): 5509–20. http://dx.doi.org/10.1021/ic00052a029.

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8

Fuchs, Stefan, José M. López-de-Luzuriaga, M. Elena Olmos, Alexander Sladek, and Hubert Schmidbaur. "Gold Coordination by a Tertiary Phosphine with Three Thioether Functions." Zeitschrift für Naturforschung B 52, no. 2 (February 1, 1997): 217–20. http://dx.doi.org/10.1515/znb-1997-0213.

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Abstract The reaction of tris(phenylthiomethyl)phosphine with equimolecular amounts of [AuPPh3]+[BF4]- affords the complex (tris(phenylthiomethyl)phosphine)(triphenylphosphine)- gold(I) tetrafluoroborate 1 in good yield. The X-ray diffraction analysis of this product shows an unusual conformation with the three ChLSPh arms of the phosphine folded back towards the metal atom shielding the P-Au-P′ unit. The reaction of the same substrate with Bis(tetrahydrothiophene)gold(I) perchlorate in a 1:1 molar ratio leads to the displacement of both weakly coordinated tht ligands, and a dimeric product [AuP(CH2SPh)3]2(ClO4)2 2 is obtained.
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9

Henyecz, Réka, and György Keglevich. "New Developments on the Hirao Reactions, Especially from “Green” Point of View." Current Organic Synthesis 16, no. 4 (July 4, 2019): 523–45. http://dx.doi.org/10.2174/1570179416666190415110834.

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Анотація:
Background: The Hirao reaction discovered ca. 35 years ago is an important P–C coupling protocol between dialkyl phosphites and aryl halides in the presence of Pd(PPh3)4 as the catalyst and a base to provide aryl phosphonates. Then, the reaction was extended to other Preagents, such as secondary phosphine oxides and H-phosphinates and to other aryl and hetaryl derivatives to afford also phosphinic esters and tertiary phosphine oxides. Instead of the Pd(PPh3)4 catalyst, Pd(OAc)2 and Ni-salts were also applied as catalyst precursors together with a number of mono- and bidentate P-ligands. Objective: In our review, we undertook to summarize the target reaction with a special stress on the developments attained in the last 6 years, hence this paper is an update of our earlier reviews in a similar topic. Conclusion: “Greener” syntheses aimed at utilizing phase transfer catalytic and microwave-assisted approaches, even under “P-ligand-free. or even solvent-free conditions are the up-to date versions of the classical Hirao reaction. The mechanism of the reaction is also in the focus these days.
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10

Asadi, Mozaffar, Ali Hossein Sarvestani, and Bahram Hemateenejad. "The Thermodynamics of Tertiary Phosphine Cobalt (III) Schiff Base Complexes." Journal of Chemical Research 2002, no. 10 (October 2002): 520–23. http://dx.doi.org/10.3184/030823402103170600.

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In this work, the thermodynamics of some other cobalt (III) Schiff base complexes with different ligands and the solvent effect have been examined. Comparison of their properties, spectrally and thermodynamically, aimed to investigate the effects of different electronic and steric situations.
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Дисертації з теми "Tertiary Phosphine Ligands"

1

Layzell, Timothy. "Rhenium hydride and related complexes containing tertiary phosphine ligands." Thesis, University of Leeds, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303633.

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2

Lugan, Noël. "Clusters du ruthenium a ligands assembleurs : stabilite, reactivite." Toulouse 3, 1987. http://www.theses.fr/1987TOU30156.

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Etude de la reactivite d'agregats derives de ru::(3)(co)::(12) stabilises par des coordinats polydentes phosphores et/ou azotes, en vue d'application en catalyse homogene. Les coordinats assembleurs sont appm et diphenylpyridylphosphine. On etudie egalement la reactivite des complexes a coordinats acyle ru::(3)(co)::(9)(c(o) (c::(6)h::(5))) (p(c::(6)h::(5)) (c::(5)h::(4)n))
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3

Mahjoor, Parisa. "Synthetic, Structural and Thermochemical Studies of N-Heterocyclic Carbene (NHC) and Tertiary Phosphine Ligands in the Ni(CO)2(L)x (L-PR3, NHC) Systems." ScholarWorks@UNO, 2004. http://louisdl.louislibraries.org/u?/NOD,165.

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Thesis (M.S.)--University of New Orleans, 2004.
Title from electronic submission form. "A thesis ... in partial fulfillment of the requirements for the degree of Master of Science in the Department of Chemistry."--Thesis t.p. Vita. Includes bibliographical references.
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4

Alnagi, Omar. "Reaction de la trimethylphosphine sur les sels de cobalt (ii) : synthese des complexes pentacoordonnes cox::(2)(pme::(3))::(3) (x=c1**(-), br**(-), i**(-), ncs**(-), no::(2)**(-)), reactivite vis-a-vis de petites molecules co, no et o::(2)." Toulouse 3, 1987. http://www.theses.fr/1987TOU30048.

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Анотація:
Synthese et etude physicochimique des complexes. Reactivite. Etude cristallographique de la structure indiquant une geometrie de bipyramide trigonale deformee quand x**(-)=cl**(-),br**(-),i**(-),ncs**(-) et une geometrie de pyramide a base carree pour x=no::(2)**(-). Etude des substitutions par co,no et o::(2)
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5

Nobel, Dominique. "Coordinats fonctionnels en chimie des metaux de transition : synthese et reactivite, application a la telomerisation catalytique du butadiene et du dioxyde de carbone." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13109.

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6

GOMES, DE LIMA LUIS CARLOS. "Reactions d'alcynes cyanes (monocyanoacethylene et dicyanoacethylene), vis-a-vis de complexes organometalliques du fer, du cobalt, du molybdene et du tungstene." Brest, 1986. http://www.theses.fr/1986BRES2009.

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Etude de la reactivite de complexes thiolates du fer et du tungstene (cp(co)::(n) m(sch::(3))) vis a vis du mono et du dicyanoacetylene. Aptitude des complexes de co(i) a intervenir dans la formation de molecules organiques. Nature des liaisons m-pb(m=mo ou w) dans les complexes cp(co)::(3)m-pbr::(3) et (cp(co)::(3)m)::(2) pbr::(2). Donnes de rmn de **(95)mo et **(207)pb
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7

Huser, Marc. "Carbonylations catalytiques du chlorobenzene et du dichloromethane." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13196.

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8

Cai, Feng Xian. "Influence du coordinat triéthylphosphine sur la réactivité des ions Ni+ supportés dans la réactivité d'oligomérisation de l'éthylène." Paris 6, 1986. http://www.theses.fr/1986PA066077.

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Les deux premiers chapitres sont consacrés à la préparation et à la caractérisation des catalyseurs aux différentes étapes de leur élaboration par l'utilisation conjointe des spectroscopies RPE, Uv-Vis et IR. Les deux derniers chapitres sont consacrés aux tests catalytiques et à l'étude du mécanisme réactionnel et de l'empoisonnement des sites actifs.
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9

Gomes, de Lima Bernardes Miriam. "Réactivité de complexes organométalliques mono- et dinucléaires : synthèse de thiolato-composés du molybdène, du tungstène et du cobalt : étude de la formation de liaisons c-c dans la sphère de coordination du métal." Brest, 1986. http://www.theses.fr/1986BRES2008.

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Caracterisation des complexes ((c::(5)h::(5))(co)::(2) lwc(cf::(3)) = c(cf::(3))h) et (c::(5)h::(5))(co) lwc(o)c(cf::(3)) = c(cf::(3))h) (l=co,pr::(3),p(or)::(3)) synthese de complexes dinucleaires de mo et w. L'addition oxydante de dialkylsulfure a des derives biportes de mo(ii) et w(ii) a donne lieu a la formation de complexes thiolato triportes ((c::(5)h::(5))(co)m(mu -sr)::(3)m(co)(c::(5)h::(5)))tx**(-)
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10

Touma, Marwan. "Nouvelles reactions d'oligomerisation et de telomerisation selectives catalysees par des complexes cationiques du palladium." Toulouse 3, 1986. http://www.theses.fr/1986TOU30139.

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Частини книг з теми "Tertiary Phosphine Ligands"

1

Hedden, David, D. Max Roundhill, Bruce N. Storhoff, and M. Brian Arnold. "Hybrid Tertiary Phosphine Amine and Amide Chelate Ligands: N -[2-(Diphenylphosphino)-Phenyl]Benzamide and 2-(Diphenylphosphino)-N -Phenylbenzamide." In Inorganic Syntheses, 322–26. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470132586.ch64.

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2

Bruce, Michael I., Brian K. Nicholson, Michael L. Williams, Thérèse Arliguie, and Guy Lavigne. "Tri- and Tetranuclear Carbonyl-Ruthenium Cluster Complexes Containing Isocyanide, Tertiary Phosphine, and Phosphite Ligands. Radical Ion-Initiated Substitution of Metal Cluster Carbonyl Complexes Under Mild Conditions." In Inorganic Syntheses, 271–80. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470132579.ch48.

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3

Bruce, Michael I., Brian K. Nicholson, Michael L. Williams, Thérèse Arliguie, and Guy Lavigne. "Tri- and Tetranuclear Carbonyl-Ruthenium Cluster Complexes Containing Isocyanide, Tertiary Phosphine, and Phosphite Ligands. Radical Ion-Initiated Substitution of Metal Cluster Carbonyl Complexes Under Mild Conditions." In Inorganic Syntheses, 221–30. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470132593.ch56.

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4

Lambert, Tristan H. "Construction of Single Stereocenters." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0031.

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Haifeng Du at the Chinese Academy of Sciences reported (J. Am. Chem. Soc. 2013, 135, 6810) the borane-catalyzed asymmetric hydrogenation of imine 1 to 2 using the diene 3 as a chiral ligand for boron. A single-enzyme cascade for the reductive transam­ination of acetophenone 4 with amine 5 to produce enantiopure sec-phenethylamine 6 was developed (Chem. Commun. 2013, 49, 161) by Per Berglund at the KTH Royal Institute of Technology in Sweden. A group at Boehringer Ingelheim in Ridgefield, Connecticut, led by Jonathan T. Reeves, disclosed (J. Am. Chem. Soc. 2013, 135, 5565) a procedure for the addition of DMF anion to N-sulfinyl imine 7 to furnish tert-leucine amide 8 with high diastereoselectivity. The tertiary carbinamine 10 was synthesized (Org. Lett. 2013, 15, 34) via the carbolithiation/rearrangement of vinyl­urea 9 as reported by Jonathan Clayden at the University of Manchester. Gregory C. Fu at Caltech reported (Angew. Chem. Int. Ed. 2013, 52, 2525) that the chiral phosphine 12 catalyzed the enantioselective addition of trifluoroacetamide to allene 11 to produce γ-amino ester 13 in enantioenriched form. Adeline Vallribera at the Autonomous University of Barcelona found (Org. Lett. 2013, 15, 1448) that a euro­pium pybox complex effected the highly enantioselective α-amination of β-ketoester 14 to generate 15 on the way to the Parkinson’s disease co-drug L-carbidopa. Hisashi Yamamoto at the University of Chicago and Chubu University reported (J. Am. Chem. Soc. 2013, 135, 3411) that a halfnium(IV) complex of the bishydroxamic acid 17 catalyzed the enantioselective epoxidation of the tertiary homoallylic alcohol 16 to 18. The rearrangement of the allylic carbonate 19 to produce allyl ether 21 with high ee under iridium catalysis in the presence of ligand 20 was disclosed (Org. Lett. 2013, 15, 512) by Hyunsoo Han at the University of Texas, San Antonio. The asymmetric vinylogous aldol reaction of 3-methyl-2-cyclohexen-1-one 22 and α-keto ester 23 to furnish tertiary carbinol 25 using the bifunctional catalyst 24 was developed (Org. Lett. 2013, 15, 220) by Paolo Melchiorre at ICREA and ICIQ in Spain.
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