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Showing 1 to 20 of 316 for “"phosphine"”.

  1. Unsymmetrical tridentate phosphine ligands

    Roscoe, Jane CarolineLancashire Polytechnic1991

    … synthetic route, via phosphonium salts and phosphine oxides has been developed for the preparation of unsymmetrical triphosphine ligands, which necessarily contain one central chiral phosphorus atom. The ttparent" tridentate phosphine is (2- diphenylphosphinoethyl)(3-diphenylphosphinopropyl) …

    cent-lancashire Repository record

  2. Stereocontrol with phosphine oxides

    Hutton, Gordon EricUniversity of Cambridge1994

    cambridge Repository record

  3. Multimetallic complexes based on phosphine- and phosphine oxide- appended <i>p</i>-hydroquinones

    Pignotti, Louis R.

    mtu Repository record

  4. Synthesis of novel phosphine ligands

    Dai, Xuedong, 1970-Massachusetts Institute of Technology1995

    Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1995.

    mit Repository record

  5. Phosphine oxides in homoallyic amine synthesis

    Armstrong, Susan KatherineUniversity of Cambridge1991

    cambridge Repository record

  6. Coordination chemistry of phosphine-derived heteropolydentate ligands.

    Varshney, Ashima

    uab Repository record

  7. Enantio- and diastereoselective reactions with phosphine oxides

    O'Brien, Peter AndrewUniversity of Cambridge1995

    cambridge Repository record

  8. The asymmetric epoxidation of allylic phosphine oxides

    Clayden, Jonathan PaulUniversity of Cambridge1992

    cambridge Repository record

  9. Synthesis and applications of atropisomeric quinazolinone phosphine ligands

    Dai, Xuedong, 1970-Massachusetts Institute of Technology1998

    Several novel atropisomeric phosphine ligands have been synthesized and evaluated. The syntheses of 2-methyl-3-[2'-(diphenylphosphino)phenyl]-4(3H)- quinazolinone (la) and its methyl-substituted analogs lb and ic were achieved in good yield by coupling N-acetylanthranilic acid with the …

    mit Repository record

  10. Chiral phosphine synthesis by the application of directed metallation

    Lin, QinghongUNSW, Sydney1999

    … to the synthesis of novel chiral ditertiary phosphines. Thus, an ortho lithiation of N,N,N',N'-tetramethyl-P-phenylphosphonic diamide (10) led to the interesting primary phosphine, 2-(diphenylphosphino)phenylphosphine (14), after elaboration of the phosphonic diamide directing group. This …

    unsw Repository record

  11. ASYMMETRIC HOMOGENEOUS HYDROGENATION WITH CHIRAL PHOSPHINE-RHODIUM(I) CATALYSTS

    HATHAWAY, SUSAN JANE

    unh-thes Repository record

  12. Synthesis and Application of Air-Stable Secondary Phosphine Oxide, Oxime, and Amine-Phosphine Palladium(II) Complexes in Transfer Hydrogenation and Cross-Coupling Reactions

    Pierce, Jordan KayUniversity of Alabama Libraries2022

    … (R3P)Pd(amine)Cl2, using di-tert-butylneopentylphosphine and trineopentylphosphine. Under optimized conditions, the precatalysts were effective for the Buchwald-Hartwig amination of aryl bromides and aryl chlorides. We discovered that the identity of the amine ligand significantly impacts …

    alabama Repository record

  13. Synthesis, Structure, Spectroscopy, and Reactivity of Azapentadienyl-Ruthenium-Phosphine Complexes

    Stouffer, Meghan Leigh2015

    … synthesis of ¬bis-azapentadienyl-ruthenium-phosphine complexes. The synthetic approach involves the treatment of Cl2Ru(PPh3)3 with potassium tert-butylazapentadienide reagent. The reactivity of this parent compound with other 2e- donor ligands is investigated. These resultant complexes' …

    wustl Repository record

  14. Synthesis and Characterization of Bis-Phosphine Complexes with Transition Metals

    McDaniel, Alicia L.

    … primarily in phosphonates, phosphates and phosphine oxides. The omission of phosphorus is interesting from two points. First, many of the precious and heavy metal ions of interest (Pd2+, Ag+, Pt2+, Pb2+, Cd2+and Hg2+) can be classified as soft Lewis acids, according to Pearson’s HSAB …

    wku-diss Repository record

  15. Dinitrogen complexes of titanium and vanadium stabilized by phosphine ligands

    Chow, Pauline ChangUniversity of British Columbia1993

    … complexes of titanium and vanadium from phosphine-based starting materials. The reactions of TiCl₄, TiCl₃(THF)₃, or VCl₂(TMEDA)₂ with LiN(SiMe₂CH₂PR₂)₂ (R = isopropyl or methyl) yielded the new phosphine complexes TiCl₃[N(SiMe₂CH₂PPri₂)₂] (1), TiCl₃[N(SiMe₂CH₂PMe₂)₂] (2), …

    ubc Repository record

  16. Palladium and platinum complexes of trans-coordinating bidentate phosphine ligands

    Ebigwei, Rosaleen NkechiPreston Polytechnic1978

    Two ditertiary phosphine ligands, 1,6.-bis(diphenylphosphino)-hexane, (dPh), and 3,31_bis(diphenylphosphinomethyl)biphenyl, (PP), have been used in the preparation of complexes described in this work. Construction of molecular models proved useful in predicting the likely geometries of the …

    cent-lancashire Repository record

  17. Renium complexes with the umbrella ligand tris(O-mercaptophenyl)phosphine

    Daughtry, Sean Keenan, 1971-Massachusetts Institute of Technology1997

    Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1997.

    mit Repository record

  18. Synthesis, characterization, and reactivity of low valent technetium phosphine complexes

    Freiberg, Evan, 1974-Massachusetts Institute of Technology2001

    … (dppm), and with diphenyl-2-pyridyl phosphine (Ph2Ppy), has been investigated. The neutral Tc(II) complex, TcCl2(dppm)2, has been isolated from the reaction of (NH4)[TcO4] with excess dppm in refluxing EtOH/HCl. Chemical oxidation with ferricinium hexafluorophosphate results in …

    mit Repository record

  19. Isomerization and Chelation Studies of Dangling Phosphine Complexes of Group 6

    Jia, Zhongjiang

    eiu Repository record

  20. Phosphine Evolution During the Quantitative Determination of Phosphorus in Cast Iron

    Smith, Paul V.Creighton University1964

    All standard methods for the quantitative determination of phosphorus in ores and metallurgical materials are based upon a preliminary conversion to orthophosphate anion PO4-3; nitric acid is generally employed as the reagent to ensure the necessary oxidizing attack on the sample. The analysis is …

    creighton Repository record

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