Relevant bibliographies by topics / Aldimine ligands

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters

Academic literature on the topic 'Aldimine ligands'

Author: Grafiati
Published: 18 May 2024

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Journal articles on the topic "Aldimine ligands"

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Brewer, Greg, Cynthia Brewer, Raymond J. Butcher, and Peter Zavalij. "Formation of Ketimines from Aldimines in Schiff Base Condensation of Amino Acids and Imidazole-2-Carboxaldehydes: Tautomerization of Schiff Bases of Amino Acids Resulting in the Loss of Stereogenic Center." Inorganics 11, no. 10 (2023): 381. http://dx.doi.org/10.3390/inorganics11100381.

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The Schiff base reaction of imidazole-2-carboxaldehydes with the anion of alanine, leucine and phenylalanine in the presence of nickel(II) ion gives the neutral NiL2 complexes. The Schiff base ligand, L, binds through an imidazole nitrogen, NIm, the amino acid nitrogen, NAA, and a carboxylate oxygen, O, atom. The two N2O ligands bind to the nickel(II) in a meridional fashion with the NIm and O of each ligand in trans positions. These ligands can exist as the anticipated aldimine, Im − CH = NAA − CH(R) − CO2−, or the ketimine, Im − CH2NAA = C(R) − CO2−, tautomer. Tautomerization of the initiall
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Hanessian, Stephen, Eric Jnoff, Noemy Bernstein, and Michel Simard. "Bifunctional bis(oxazolines) as potential ligands in catalytic asymmetric reactions." Canadian Journal of Chemistry 82, no. 2 (2004): 306–13. http://dx.doi.org/10.1139/v03-198.

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C2-symmetrical bis(oxazoline) ligands bearing pendant alkylthio ether groups were synthesized, and the structures of Cu complexes were determined by single crystal X-ray diffraction. The potential utility in catalysis was shown in the asymmetric addition of methyllithium to an aromatic aldimine, which resulted in a mixture of products with an enantiomeric excess of 68%.Key words: two-center catalysis, bis(oxazoline), aldimine, imine alkylation.
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ALI, Uzma, Aneela MAALIK, Muhammad Babar TAJ, et al. "Facile synthesis, solublization studies and anti-inflammatory activity of amorphous zinc(II) centered aldimine complexes." Revue Roumaine de Chimie 65, no. 10 (2021): 929–41. http://dx.doi.org/10.33224/rrch.2020.65.10.08.

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In this study, Zn(II) centered complexes with aldimine derivatives were synthesized using green solvent, polyethylene glycol (PEG-400) and amorphous complexes were characterized by FT-IR, multinuclear (1H and 13C NMR), elemental and thermal analysis. Thermogravimetric analysis indicated the extended thermal stability of the synthesized complexes. All the Zn(II) complexes show very significant photoexcitation in the range of 318 – 384 nm and photoemission in the range of 502 – 562 nm. Among all the complexes, Zn(II) complex (3Zn) showed minimum band gap value, 2.35 eV. These amorphous complexes
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Dutta, Jayita, Michael G. Richmond, and Samaresh Bhattacharya. "Palladium(0)-mediated C–H bond activation of N-(naphthyl)salicylaldimine and related ligands: utilization of the resulting organopalladium complexes in catalytic C–C and C–N coupling reactions." Dalton Transactions 44, no. 30 (2015): 13615–32. http://dx.doi.org/10.1039/c5dt01564b.

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Wu, Rui, Ruslan Sanishvili, Boris R. Belitsky, et al. "PLP and GABA trigger GabR-mediated transcription regulation in Bacillus subtilis via external aldimine formation." Proceedings of the National Academy of Sciences 114, no. 15 (2017): 3891–96. http://dx.doi.org/10.1073/pnas.1703019114.

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The Bacillus subtilis protein regulator of the gabTD operon and its own gene (GabR) is a transcriptional activator that regulates transcription of γ-aminobutyric acid aminotransferase (GABA-AT; GabT) upon interactions with pyridoxal-5′-phosphate (PLP) and GABA, and thereby promotes the biosynthesis of glutamate from GABA. We show here that the external aldimine formed between PLP and GABA is apparently responsible for triggering the GabR-mediated transcription activation. Details of the “active site” in the structure of the GabR effector-binding/oligomerization (Eb/O) domain suggest that bindi
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Taj, Muhammad Babar, Muneera D. F. Alkahtani, Uzma Ali, et al. "New Heteroleptic 3D Metal Complexes: Synthesis, Antimicrobial and Solubilization Parameters." Molecules 25, no. 18 (2020): 4252. http://dx.doi.org/10.3390/molecules25184252.

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The microbial resistance to current antibiotics is increasing day by day, which in turn accelerating the development of new effective drugs. Several studies have proved the high antimicrobial potential of the interaction of several organic ligands with a variety of metal ions. In the present study, a conventional method has been adopted in the synthesis of twelve new heteroleptic complexes of cobalt (II), nickel (II), copper (II) and zinc (II) using three aldimines, namely, (HL1 ((E)-2-((4-chloro-2-hydroxybenzylidene)amino)-3,4-dimethyl-5-phenylcyclopent-2-en-1-one), HL2 ((Z)-3-((4-chlorobenzy
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Rath, Sankar P., Sujit Mondal, and Tapas Ghosh. "Mixed-ligand oxovanadium(V) complexes incorporating bidentate salicylaldehyde and tridentate aldimine ligands." Transition Metal Chemistry 21, no. 4 (1996): 309–11. http://dx.doi.org/10.1007/bf00139024.

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Wosińska-Hrydczuk, Marzena, and Jacek Skarżewski. "New Nitrogen, Sulfur-, and Selenium-Donating Ligands Derived from Chiral Pyridine Amino Alcohols. Synthesis and Catalytic Activity in Asymmetric Allylic Alkylation." Molecules 26, no. 12 (2021): 3493. http://dx.doi.org/10.3390/molecules26123493.

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Although many chiral ligands for asymmetric catalysis have been developed, there is still a need for new structures allowing the modular approach. Recently, easy synthesis of chiral pyridine-containing β-amino alcohols has been elaborated by opening respective epoxides with enantiomeric 1-phenylethylamine. This paper reports the synthetic transformation of β-amino alcohols into the new complexing pyridine-containing seleno- and thioethers. The amino alcohols were effectively converted to cyclic sulfonamidates, which were reacted with thiolates or phenyl selenide nucleophile. The reaction was d
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Zhou, Xiaoyu, Jiaxin Yang, Zhiqiang Hao, Zhangang Han, Jin Lin, and Guo-Liang Lu. "Copper Complexes with N,N,N-Tridentate Quinolinyl Anilido-Imine Ligands: Synthesis and Their Catalytic Application in Chan−Lam Reactions." Molecules 28, no. 21 (2023): 7406. http://dx.doi.org/10.3390/molecules28217406.

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The treatment of 2-(ArNC(H))C6H4-HNC9H6N with n-BuLi and the subsequent addition of CuCl2 afforded the anilido-aldimine Cu(II) complexes 1-5 Cu[{2-[ArN=C(H)]C6H4}N(8-C9H6N)]Cl (Ar = 2,6-iPr2C6H3 (1), 2,4,6-(CH3)3C6H2 (2), 4-OCH3C6H4 (3), 4-BrC6H4 (4), 4-ClC6H4 (5)), respectively. All the copper complexes were fully characterized by IR, EPR and HR-MS spectra. The X-ray diffraction analysis reveals that 2 and 4 are mononuclear complexes, and the Cu atom is sitting in a slightly square-planar geometry. These Cu(II) complexes have exhibited excellent catalytic activity in the Chan–Lam coupling rea
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Agarwal, Ram K., and Surendra Prasad. "Synthesis, Spectroscopic and Physicochemical Characterization and Biological Activity of Co(II) and Ni(II) Coordination Compounds with 4-Aminoantipyrine Thiosemicarbazone." Bioinorganic Chemistry and Applications 3, no. 3-4 (2005): 271–88. http://dx.doi.org/10.1155/bca.2005.271.

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We describe the synthesis and characterization of cobalt(II) and nickel(II) coordination compounds of 4[N-(furan-2’-aldimine)amino]antipyrine thiosemicarbazone (FFAAPTS) and 4[N-(4'-nitrobenzalidene) amino]antipyrine thiosemicarbazone (4'-NO2BAAPTS). All the isolated compounds have the general composition MX2(L)(H2O) (M = Co2+or Ni2+; X = Cl, Br, NO3, NCS or CH3COO; L = FFAAPTS or 4'-NO2BAAPTS) and M(ClO4)2(L)2(M = Co2+or Ni2+; L = FFAAPTS or 4'-NO2BAAPTS). Infrared spectral studies indicate that both the thiosemicarbazones coordinate in their neutral form and they act as {N,N,S} tridentate ch
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Dissertations / Theses on the topic "Aldimine ligands"

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Ali, Md Afsar. "Synthetic, physico-chemical and reactivity aspects of co-ordination compounds of molybdenum and dioxounarium (vi) with pterin and aldimine ligands." Thesis, University of North Bengal, 2008. http://hdl.handle.net/123456789/1303.

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Reich, Blair Jesse Ellyn. "Cyanide-catalyzed C-C bond formation: synthesis of novel compounds, materials and ligands for homogeneous catalysis." Texas A&M University, 2005. http://hdl.handle.net/1969.1/4987.

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Cyanide-catalyzed aldimine coupling was employed to synthesize compounds with 1,2-ene-diamine and α-imine-amine structural motifs: 1,2,N,N'- tetraphenyletheylene-1,2-diamine (13) and (+/-)-2,3-di-(2-hydroxyphenyl)-1,2- dihydroquinoxaline (17), respectively. Single crystal X-ray diffraction provided solidstate structures and density functional theory calculations were used to probe isomeric preferences within this and the related hydroxy-ketone/ene-diol system. The enediamine and imine-amine core structures were calculated to be essentially identical in energy. However, additional effects-su
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Rahman, Mohammed Mahmudur. "Zwitterionic late transition metal alkene polymerisation catalysts containing aminofulvene-aldiminate (AFA) ligands." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4895.

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Over recent years significant progress has been made in the design and development of late transition metal cationic catalysts for olefin polymerisation. Never-the-less, the activation of catalyst precursors and generation of active species still remains a challenge. In this respect, zwitterionic catalysts could offer a range of advantages over the traditional two component catalytic systems. For example, stable zwitterions are well-defined, single component catalysts which do not require Lewis acid co-catalysts for activation. Therefore, this eliminates the possibility of anions coordinating
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Mabad, Bouchra. "Modelisation du site d'oxydation de l'eau en photosynthese : complexes du manganese avec des bases de schiff polydentees." Toulouse 3, 1987. http://www.theses.fr/1987TOU30103.

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Bedioui, Fethi. "Etude électrochimique de complexes de métaux de transition (bases de Schiff et porphyrines) en solution et sous forme d'électrodes modifiées : application à la catalyse électroassistée de réactions organiques." Paris 6, 1986. http://www.theses.fr/1986PA066338.

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Les propriétés électrochimiques des complexes co-base de Schiff (phenylene-bis(salicylideneiminoto)-co, ou Co(II)saloph, et n-methylenepropylene-bis-(salicylideneiminoto)-co, ou co-selnmedpt) et de tetraphenylporphine-co, ou CoTPP, sont utilisées pour étudier la réduction électroassistée d'halogénures organiques, Rx, avec un catalyseur fixe sur support conducteur, en milieu organique. On étudie: 1) la réduction du chlorure de benzyle électrocatalysée par des électrodes de graphite modifiées par du co-saloph et 2) l'oxydation par l'oxygène moléculaire du di-tert-butylphenol, électrocatalysée pa
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Tsai, Yueh-Hsuan, та 蔡岳軒. "Synthesis and Structural Studies of Metal Complexes with O,O,O-Tridentate Bis(phenolate) and N,N,N-Anilido-Aldimine Ligands: Their Application in the Ring-Opening Polymerization of L-Lactide and ε-Caprolactone". Thesis, 2009. http://ndltd.ncl.edu.tw/handle/40546458297240636656.

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碩士<br>國立中興大學<br>化學系所<br>97<br>A family of metal complexes of the type ([(L1-H)Li]2 (1), [(L1-H)Li(THF)]2 (2), [(L1-H)Li(BnOH)]2 (3), [L1Zn]2 (4), [L1AlOBn]2 (5), L2MgBu (6) and L2ZnEt (7)), where L1-H2 = O,O,O-tridentate bis(phenolate) ligand and L2-H = N,N,N-anilido-aldimine ligand, has been synthesized and characterized, including a structural determination of complexes 1, 2, 3, 5, 6 and 7. Their suitability for initiating the ring-opening polymerization (ROP) of L-lactide (LA) and ε-caprolactone (CL) has been investigated in the presence or absence of benzyl alcohol (BnOH). All the metal c
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Yang, Chih-Wei, and 楊志偉. "Coordination Chemistry of a 5-tert-Butyl-2-[(2,6-diisopropylphenyl)aldimino]-pyrrolate Ligand." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/58264181135801681221.

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碩士<br>國立中山大學<br>化學系研究所<br>90<br>The Vilsmeier-Haack reaction of pyrrole with oxalyl chloride and N,N-dimethylformaldehyde followed by Friedel-Crafts alkylation with Me3CCl in the presence of AlCl3 afforded 5-tert-butylpyrrole-2- carbal- dehyde in high yields. Condensation reactions of 5-tert-butylpyrrole-2- carbaldehyde with 2,6-diisopropylaniline produced 5-tert-Butyl-2-2[(2,6- diisopropylphenyl)aldimino]pyrrole (HL). Protonolysis of MgnBu2 with HL yielded the bis(iminopyrrolate) complex MgL2 (1) as a colorless crystalline solid. In situ lithiation of HL followed by addition of one equivalent
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Book chapters on the topic "Aldimine ligands"

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Benkoski, Léa, and Tristan H. Lambert. "Construction of Multiple Stereocenters." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0039.

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Erick M. Carreira at ETH Zürich reported (Science 2013, 340, 1065) the enantiose­lective α-allylation of aldehyde 1 with alcohol 2 to produce 3 using a dual catalytic system involving a chiral iridium complex and amine 5. This stereodivergent method allows access to all of the possible stereoisomers of 3. In a conceptually related proc­ess, John F. Hartwig at the University of California, Berkeley reported (J. Am. Chem. Soc. 2013, 135, 2068) the highly stereoselective allylic alkylation of azlactone 6 with allylic carbonate 7 catalyzed by a combination of Ir(cod)Cl₂, ligand 9, and racemic silver phosphate 10. An enantioselective three-component Mannich-type reaction of tert-butyl diazo­acetate, aniline, and imine 11 to produce α,β-bis(arylamino) acid derivative 13 under dual catalysis with Rh₂(OAc)₄ and acid 12 was developed (Synthesis 2013, 45, 452) by Wenhao Hu at the Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development. Keiji Maruoka at Kyoto University reported (Chem. Commun. 2013, 49, 1118) a one-pot cross double-Mannich reaction of acetylalde­hyde 14, and imines 16 and 17 using axially chiral amino sulfonamide 15 to obtain densely functionalized 1,3-diamine 18 as a single stereoisomer. Jeffrey S. Johnson at the University of North Carolina at Chapel Hill reported (Org. Lett. 2013, 15, 2446) the asymmetric synthesis of enantioenriched anti-α-hydroxy-β-amino acid derivative 21 from 19 by treatment with oxone followed by catalytic hydrogenation using Ru(II) complex 20. Naoya Kumagai and Masakatsu Shibasaki at the Institute of Microbial Chemistry found (Org. Lett. 2013, 15, 2632) that a sil­ver complex of bisphosphine 24 effected a syn-selective and highly enantioselective Mannich-type reaction of aldimine 22 and α-sulfanyl lactone 23 to furnish the stereo­diad 25 with very high ee. The enantioselective homocrotylation of octanal 26 with cyclopropylcarbinylbo­ronate 27 to produce alcohol 28 with high ee was disclosed (J. Am. Chem. Soc. 2013, 135, 82) by Isaac J. Krauss at Brandeis University with computational studies pro­vided by Kendall N. Houk at UCLA. Benjamin List at the Max-Planck-Institut für Kohlenforschung reported (J. Am. Chem. Soc. 2013, 135, 6677) the enantioselective epoxidation of cyclohexenone 29 utilizing cinchona alkaloid- derived catalyst 30.
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