Dissertation > Excellent graduate degree dissertation topics show

The chiral amine alcohols rare earth complexes and catalytic asymmetric ketone

Author: ZouXiaoYan
Tutor: ZuoPengFei；LiGuangMing
School: Heilongjiang University
Course: Organic Chemistry
Keywords: chiral amino alcohol lanthanide complex asymmetric transfer hydrogenation chiral catalysis
CLC: O643.36
Type: Master's thesis
Year: 2006
Downloads: 78
Quote: 0
Read: Download Dissertation

Abstract


All experiments were carried out under the conditions of moisture and oxygen-free in nitrogen stream（99.99%）. We prepared a kind of chiral C2-symmetric amino alcohol L-1, L-2, L-3. They were firstly reacted with SmCl3·4THF、 GdCl3·4THF and LaCl3·4THF to prepare nine novel lanthanide amino alcohol complexes. The complexes have been characterized by Fourier transform infrared（IR）, Ultraviolet-visible（UV-VIS）, Elemental analyses, Thermal gravimetric analyses and Fluorescence measurements were also studied.The fluorescence spectra analysis showed that the amino alcohol had better fluorescence properties, but the Fluorescence properties of the amino alcohol lanthanide complexes decreased clearly. The complexes of 1, 2, 7 , 8 emitted strong green characteristic fluorescence of the ligand. But the 4, 5, 6 emitted yellow characteristic fluorescence of Sm3+ ions. On the basis of the comparison with the Sm3+ ions, the luminescent intensity of the lanthanide ion Sm3+ was enhanced extensively.Asymmetric transfer hydrogenation of acetophenone was conducted by using salt-free lanthanoid complexes of L-4、 L-5、 L-6 . The best composition of catalysis system is L-4/SmCl3·4THF/n-KOBut, the best ratio of Sub./Cat./n-KOBut is 100:5:16, the appropriate temperature is 20℃ and reaction time is 24 hours. The best enantiosectivity（e.e.value） is 40%, and the best conversion is 97%.

Related Dissertations

  1. Synthesis, Structure and Characterization of Dicarboxylic Acid Lanthanide Coordination Polymer,O641.4
  2. One-pot Conversion of Carboxylic Acids Into Nitriles Under Microwave Irradiation and Reduction of Chiral Amino Acids and Cleavage of Ether Bonds Using Boron Trifluoride,O621.25
  3. Synthesis of Innovative Rare Earth Complexes and Their Catalytic Activity Toward the the Ring-Opening Polymerization,O631.5
  4. Synthesis of Polymer-Supported Ru Catalysts and Application in the Asymmetric Transfer Hydrogenation of Acetophonone,O643.32
  5. Adsorption properties and catalytic properties of functionalized mesoporous materials,X13
  6. Dynamic Kinetic Resolution via Asymmetric Transfer Hydrogenation Reaction,O643.1
  7. Synthesis of Chiral Ligands Containing N and Their Applications in Some Asymmetric Catalysis,O621.2
  8. Functional Transition and Rare-Earth Coordination Polymers Assembled via Metalloligands,O641.4
  9. Synthesis of New Chiral Ligands and Their Application in Asymmetric Transfer Hydrogenation of Aromatic Ketones,O643.32
  10. Lanthanide aromatic carboxylic acid with the Synthesis, crystal structure and properties of,O627.3
  11. Synthesis and Application of Novel Iron-complex and Lanthanide-complex Dyes,O641.4
  12. Immobilization of Chiral Mn(salen) Catalysts in Nanopores and on Surface of Solid Supports and the Asymmetric Epoxidation of Unfunctionalized Olefins,O643.32
  13. Synthesis of a Novel Thermoregulated Noyori Ligand Modified by Polyether and Its Application in Asymmetric Transfer Hydrogenation of Acetophenone,O643.32
  14. Preparation of Chiral Aminophosphine-Ir(I) Complexes and Their Applications in Asymmetric Catalysis,O643.32
  15. The Construction of Unsymmetrical cis-2,5-Disubstituted Pyrrolidines and Their Application for Asymmetric Synthesis,R914
  16. Synthesis of Chiral Cyclopalladated Ferrocenylimines and α-ferrocenyl-α-aminophosphine Oxides and Their Application in Asymmetric Catalysis,O643.3
  17. Synthesis and Characterization of Organolanthanide Complexes Supported by Guanidinate and Amidinate Ligand Their Catalytic Behavior for Polymerization,O641.4
  18. Syntheses, Characterizations,and Structures of Organolanthanide Complexes Supported by β-Diketiminate,O641.4
  19. Study on the Synthesis and Their Catalytic Properties of Rare Earth Schiff-base Complexes with Amino Acid Derivatives,O627.3
  20. Multi-walled Carbon Nanotubes Au _AT_ of Pt, Au _AT_ of Pd core-shell structure of the catalyst preparation and electrochemical properties of,O643.36
  21. The Study of Anode Catalyst Pd/C for Direct Formic Acid Fuel Cell,O643.36

CLC: > Mathematical sciences and chemical > Chemistry > Physical Chemistry ( theoretical chemistry ),chemical physics > Chemical kinetics,catalysis > Catalytic > Catalyst
© 2012 www.DissertationTopic.Net  Mobile