1
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Coaviche-Yoval A, Trujillo-Ferrara JG, Soriano-Ursúa MA, Andrade-Jorge E, Sánchez-Labastida LA, Luna H, Tovar-Miranda R. In silico and in vivo neuropharmacological evaluation of two γ-amino acid isomers derived from 2,3-disubstituted benzofurans, as ligands of GluN1-GluN2A NMDA receptor. Amino Acids 2022; 54:215-228. [PMID: 34854957 DOI: 10.1007/s00726-021-03108-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 11/12/2021] [Indexed: 02/07/2023]
Abstract
The GABAergic and glutamatergic neurotransmission systems are involved in seizures and other disorders of the central nervous system (CNS). Benzofuran derivatives often serve as the core in drugs used to treat such neurological disorders. The aim of this study was to synthesize new γ-amino acids structurally related to GABA and derived from 2,3-disubstituted benzofurans, analyze in silico their potential toxicity, ADME properties, and affinity for the GluN1-GluN2A NMDA receptor, and evaluate their potential activity and neuronal mechanisms in a murine model of pentylenetetrazol (PTZ)- and 4-aminopyridine (4-AP)-induced seizures. The in silico analysis evidenced a low risk of toxicity for the test compounds as well as the probability that they can cross the blood-brain barrier (BBB) to reach their targets in the CNS. According to docking simulations, these compounds bind at the active site of the NMDA glutamate receptor with high affinity. The in vivo assays demonstrated that 4 protects against 4-AP-induced seizure episodes, suggesting negative allosteric modulation (NAMs) at the glutamatergic NMDA receptor. Contrarily, 3 (the regioisomer of 4) and its racemic derivatives (cis-2,3-dihydrobenzofurans) were previously described to exacerbate such episodes, pointing to their positive allosteric modulation (PAMs) of the same receptor.
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Affiliation(s)
- Arturo Coaviche-Yoval
- Departamento de Sistemas Biológicos, Universidad Autónoma Metropolitana-Unidad Xochimilco Calzada del Hueso 1100, Col. Villa Quietud, 04960, Coyoacán, CDMX, Mexico
- Instituto de Ciencias Básicas Universidad Veracruzana, Av. Dr. Luis Castelazo Ayala s/n Col. Industrial Animas, Xalapa, 91190, Veracruz, Mexico
| | - José G Trujillo-Ferrara
- Departamentos de Bioquímica y Fisiología, Escuela Superior de Medicina-Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n Col. Casco de Santo Tomas, 11340, Miguel Hidalgo, CDMX, Mexico
| | - Marvin A Soriano-Ursúa
- Departamentos de Bioquímica y Fisiología, Escuela Superior de Medicina-Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n Col. Casco de Santo Tomas, 11340, Miguel Hidalgo, CDMX, Mexico
| | - Erik Andrade-Jorge
- Departamentos de Bioquímica y Fisiología, Escuela Superior de Medicina-Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n Col. Casco de Santo Tomas, 11340, Miguel Hidalgo, CDMX, Mexico
- Facultad de Estudios Superiores-Iztacala-UNAM, Unidad de Investigación en Biomedicina, Av. De Los Barrios 1, Los Reyes Iztacala, 54090, Tlalnepantla, Edo. De México, Mexico
| | - Luis A Sánchez-Labastida
- Departamentos de Bioquímica y Fisiología, Escuela Superior de Medicina-Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n Col. Casco de Santo Tomas, 11340, Miguel Hidalgo, CDMX, Mexico
| | - Héctor Luna
- Departamento de Sistemas Biológicos, Universidad Autónoma Metropolitana-Unidad Xochimilco Calzada del Hueso 1100, Col. Villa Quietud, 04960, Coyoacán, CDMX, Mexico.
| | - Ricardo Tovar-Miranda
- Instituto de Ciencias Básicas Universidad Veracruzana, Av. Dr. Luis Castelazo Ayala s/n Col. Industrial Animas, Xalapa, 91190, Veracruz, Mexico.
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2
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Suhr S, Walter R, Beerhues J, Albold U, Sarkar B. Rhodium Diamidobenzene Complexes: A Tale of Different Substituents on the Diamidobenzene Ligand. Chem Sci 2022; 13:10532-10545. [PMID: 36277629 PMCID: PMC9473529 DOI: 10.1039/d2sc03227a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 07/15/2022] [Indexed: 11/21/2022] Open
Abstract
Diamidobenzene ligands are a prominent class of redox-active ligands owing to their electron reservoir behaviour, as well as the possibility of tuning the steric and the electronic properties of such ligands through the substituents on the N-atoms of the ligands. In this contribution, we present Rh(iii) complexes with four differently substituted diamidobenzene ligands. By using a combination of crystallography, NMR spectroscopy, electrochemistry, UV-vis-NIR/EPR spectroelectrochemistry, and quantum chemical calculations we show that the substituents on the ligands have a profound influence on the bonding, donor, electrochemical and spectroscopic properties of the Rh complexes. We present, for the first time, design strategies for the isolation of mononuclear Rh(ii) metallates whose redox potentials span across more than 850 mV. These Rh(ii) metallates undergo typical metalloradical reactivity such as activation of O2 and C–Cl bond activations. Additionally, we also show that the substituents on the ligands dictate the one versus two electron nature of the oxidation steps of the Rh complexes. Furthermore, the oxidative reactivity of the metal complexes with a [CH3]+ source leads to the isolation of a unprecedented, homobimetallic, heterovalent complex featuring a novel π-bonded rhodio-o-diiminoquionone. Our results thus reveal several new potentials of the diamidobenzene ligand class in organometallic reactivity and small molecule activation with potential relevance for catalysis. Diamidobenzene ligands are versatile platforms in organometallic Rh-chemistry. They allow the isolation of tunable mononuclear ate-complexes, and the formation of a unprecedented homobimetallic, heterovalent complex.![]()
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Affiliation(s)
- Simon Suhr
- Lehrstuhl für Anorganische Koordinationschemie, Institut für Anorganische Chemie, Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Robert Walter
- Lehrstuhl für Anorganische Koordinationschemie, Institut für Anorganische Chemie, Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Julia Beerhues
- Lehrstuhl für Anorganische Koordinationschemie, Institut für Anorganische Chemie, Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Uta Albold
- Institut für Chemie und Biochemie, Freie Universität Berlin Fabeckstr. 34-36 14195 Berlin Germany
| | - Biprajit Sarkar
- Lehrstuhl für Anorganische Koordinationschemie, Institut für Anorganische Chemie, Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
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Chen XM, Huang LC, Gao W. One-pot synthesis of cobalt complexes with 2,6-bis(arylimino)phenoxyl/phenthioxyl ligands and catalysis on isoprene polymerization. Dalton Trans 2021; 50:5218-5225. [PMID: 33881099 DOI: 10.1039/d1dt00371b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Several cobalt complexes supported by 2,6-bis(arylimino)phenoxyl/phenthioxyl ligands κ2N,X-Ar[NXN]CoCl(THF) (1a, X = O, Ar = 2,6-Me2C6H3; 1b, X = O, Ar = 2,6-iPr2C6H3; 2a, X = S, Ar = 2,6-Me2C6H3; 2b, X = S, Ar = 2,6-iPr2C6H3) were synthesized by direct oxygen(sulfur) insertion into the C-Co bond of the mixed-valence cobalt complexes {κ2C,N,η6-Ar[NCN]Co-κN-CoCl(μ-Cl)}2. Crystallization of 1b in the presence of water gave the hydrolysis product 1b'. Treatment of Ar[NCN]Li with dioxygen followed by the addition of CoCl2 afforded the heteroatomic complexes {κ2N,O-Ar[NON]Co(μ-Cl)2Li}2 (3a, Ar = 2,6-Me2C6H3; 3b, Ar = 2,6-iPr2C6H3) or κ2N,O-Ar[NON]Co2Cl2(μ-Cl)2Li(THF)2 (4a, Ar = 2,6-Me2C6H3; 4b, Ar = 2,6-iPr2C6H3) depending on the amount of CoCl2 used. The Co(iii)/Li heterometallic complex 3b' with imino-phenoxyl-amino ligands was formed probably via a redox reaction of 3b. The reactions of Ar[NCN]Li with elemental sulfur and CoCl2 gave κ2N,S-Ar[NSN]Co2Cl2(μ-Cl)2Li(THF)2 (5a, Ar = 2,6-Me2C6H3; 5b, Ar = 2,6-iPr2C6H3) respectively. These complexes were well characterized by FT-IR and elemental analyses, and the molecular structures of 1b', 3b', 4a, and 4b were confirmed by X-ray crystallography. Upon activation with Al2Et3Cl3 in toluene, these complexes showed high activities in isoprene polymerization affording cis-1,4 enriched polymers with a moderate molecular weight (0.85-4.72 × 104 Da).
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Affiliation(s)
- Xue-Meng Chen
- College of Chemistry, Jilin University, Changchun 130012, China.
| | - Li-Cheng Huang
- College of Chemistry, Jilin University, Changchun 130012, China.
| | - Wei Gao
- College of Chemistry, Jilin University, Changchun 130012, China.
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4
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Huang LC, Zhang JS, Jia T, Mu Y, Gao W. Bis(imino)aryl NCN pincer cobalt complexes: synthesis and disproportionation. Dalton Trans 2020; 49:5219-5227. [PMID: 32239026 DOI: 10.1039/d0dt00747a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Treatment of iPr[NCN]Br (2,6-(2,6-iPr2C6H3C[double bond, length as m-dash]N)2C6H3Br) with nBuLi in THF and the subsequent addition of 1 equiv. of CoCl2, CoCl2(Ph3P)2, and CoBr2 gave pincer Co(ii) complexes {iPr[NCN]Co(μ-Cl)}2 (1d), iPr[NCN]CoClPh3P (1d-Ph3P), and iPr[NCN]CoBr2·Li(THF)4 (1d-LiBr) respectively in moderate yields, whereas the slow addition of in situ prepared iPr[NCN]Li to CoCl2 in THF afforded an unexpected mixed-valence cobalt(i/ii) complex κ2C,N,η6-iPr[NCN]Co-κN-CoCl3·Li(THF)4 (2d). Complex 2d was probably formed via a disproportionation reaction of the iPr[NCN]Co(ii) species with excess CoCl2 during the reaction. Nevertheless, addition of CoCl2 to in situ formed 1d-THF at room temperature did not lead to 2d but gave a trinuclear Co(ii) complex {iPr[NCN]Co(μ-Cl)(μ-Br/Cl)}2Co (1d-CoCl2) in moderate yield. Similar reactions using ligands containing small ortho groups in the imine moieties R[NCN]Br (2,6-(2,6-Me2C6H3C[double bond, length as m-dash]N)2C6H3Br, Me[NCN]Br; 2,6-(2,6-Et2C6H3C[double bond, length as m-dash]N)2C6H3Br, Et[NCN]Br; 2,6-(2,4,6-Me3C6H2C[double bond, length as m-dash]N)2C6H3Br, Mes[NCN]Br) and CoBr2, regardless of the reactant addition sequence, afforded mixed-valence cobalt(i/ii) complexes {κ2C,N,η6-R[NCN]Co-κN-CoBr(μ-Br)}2 (Me[NCN] (2a), Et[NCN] (2b), and Mes[NCN] (2c)), suggesting that the bulkiness of the ortho-groups in the imine moieties of the ligands plays an important role in the disproportionation reaction. In the presence of PMe3, Co(ii) complexes κ2C,N-R[NCN]CoBr(PMe3)2 (3a-d) and a bisligated cobalt(ii) complex κ3N,C,N-κ2C,N-iPr[NCN]2CoPMe3 (4d) can be prepared respectively in high yields. The molecular structures of 1d-LiBr, 1d-CoCl2, 2b, 2d, 3a, and 4d were confirmed by X-ray crystallographic analysis and the detailed mechanisms of the disproportionation reaction were proposed.
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Affiliation(s)
- Li-Cheng Huang
- College of Chemistry, Jilin University, Changchun 130012, China.
| | - Jing-Shun Zhang
- College of Chemistry, Jilin University, Changchun 130012, China.
| | - Teng Jia
- College of Chemistry, Jilin University, Changchun 130012, China.
| | - Ying Mu
- College of Chemistry, Jilin University, Changchun 130012, China.
| | - Wei Gao
- College of Chemistry, Jilin University, Changchun 130012, China.
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Gorczyński A, Marcinkowski D, Pakulski D, Kubicki M, Harrowfield JM, Stefankiewicz AR, Hnatejko Z, Patroniak V. Luminescent activity of metallosupramolecular Cd(II) complexes containing dimethylterpyridine ligand. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2016.04.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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6
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Ito JI, Ishihara T, Fukuoka T, Binti Mat Napi SR, Kameo H, Nishiyama H. Modulation of the coordination geometries of NCN and NCNC Rh complexes for ambidextrous chiral catalysts. Chem Commun (Camb) 2019; 55:12765-12768. [DOI: 10.1039/c9cc06520b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A chirality switch between novel NCN pincer Rh complexes and a related double cyclometalated NCNC Rh complex containing secondary amino groups is described.
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Affiliation(s)
- Jun-ichi Ito
- Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering, Nagoya University
- Nagoya 464-8603
- Japan
| | - Takahiro Ishihara
- Department of Applied Chemistry
- Graduate School of Engineering, Nagoya University
- Nagoya 464-8603
- Japan
| | - Takaki Fukuoka
- Department of Applied Chemistry
- Graduate School of Engineering, Nagoya University
- Nagoya 464-8603
- Japan
| | | | - Hajime Kameo
- Department of Chemistry
- Graduate School of Science
- Osaka Prefecture University
- Osaka 599-8531
- Japan
| | - Hisao Nishiyama
- Department of Applied Chemistry
- Graduate School of Engineering, Nagoya University
- Nagoya 464-8603
- Japan
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7
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Jia T, Xu SY, Huang LC, Gao W. Scandium and gadolinium complexes with aryldiimine NCN pincer ligands: Synthesis, characterization, and catalysis on isoprene and 1,5-hexadiene polymerization. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.02.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Jiang Y, Gendy C, Roesler R. Nickel, Ruthenium, and Rhodium NCN-Pincer Complexes Featuring a Six-Membered N-Heterocyclic Carbene Central Moiety and Pyridyl Pendant Arms. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00022] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Yanmin Jiang
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4 Canada
| | - Chris Gendy
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4 Canada
| | - Roland Roesler
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4 Canada
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9
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Kořenková M, Kremláček V, Erben M, Jambor R, Růžičková Z, Dostál L. Reactions of N,C,N-chelated pnictinidenes with Rh(I) and Ir(I) complexes: Coordination vs. Transmetalation. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.02.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Seow C, Xi HW, Li Y, So CW. Synthesis of a Germylidenide Anion from the C–C Bond Activation of a Bis(germylene). Organometallics 2016. [DOI: 10.1021/acs.organomet.5b01001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Celestine Seow
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Hong-Wei Xi
- School
of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Yongxin Li
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Cheuk-Wai So
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
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Affiliation(s)
- Leah M. Stateman
- Department
of Chemistry, Illinois State University, Normal, Illinois 61790-4160, United States
| | - Gregory M. Ferrence
- Department
of Chemistry, Illinois State University, Normal, Illinois 61790-4160, United States
| | - Timothy D. Lash
- Department
of Chemistry, Illinois State University, Normal, Illinois 61790-4160, United States
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12
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Jongbloed LS, de Bruin B, Reek JNH, Lutz M, van der Vlugt JI. Facile Synthesis and Versatile Reactivity of an Unusual Cyclometalated Rhodium(I) Pincer Complex. Chemistry 2015; 21:7297-305. [DOI: 10.1002/chem.201406463] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 01/23/2015] [Indexed: 12/27/2022]
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13
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Zhang J, Hao Z, Gao W, Xin L, Zhang L, Mu Y. Y, Lu, and Gd Complexes of NCO/NCS Pincer Ligands: Synthesis, Characterization, and Catalysis in thecis-1,4-Selective Polymerization of Isoprene. Chem Asian J 2013; 8:2079-87. [DOI: 10.1002/asia.201300581] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Indexed: 11/08/2022]
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14
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Toyoshima T, Yoshida S, Watanabe S. Synthesis of an alkylthio-substituted dibenz[a,j]anthracene with improved solubility via the oxidative photocyclization of 1,3-distyrylbenzene derivatives. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.12.048] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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15
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The Monoanionic ECE-Pincer Ligand: A Versatile Privileged Ligand Platform—General Considerations. TOP ORGANOMETAL CHEM 2013. [DOI: 10.1007/978-3-642-31081-2_1] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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16
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Qian YY, Chan KS. Base-Promoted Aryl Carbon–Iodine and Carbon–Bromine Bond Cleavage with Rhodium Porphyrin Complexes: Scope and Mechanism. Organometallics 2012. [DOI: 10.1021/om300441p] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ying Ying Qian
- Department of Chemistry, The Chinese University of Hong Kong,
Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Kin Shing Chan
- Department of Chemistry, The Chinese University of Hong Kong,
Shatin, New Territories, Hong Kong, People’s Republic of China
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17
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Hybrid NCS palladium pincer complexes of thiophosphorylated benzaldimines and their ketimine analogs. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.03.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Shaffer DW, Ryken SA, Zarkesh RA, Heyduk AF. Ligand Effects on the Oxidative Addition of Halogens to (dpp-nacnacR)Rh(phdi). Inorg Chem 2012; 51:12122-31. [DOI: 10.1021/ic300733j] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- David W. Shaffer
- Department
of Chemistry, University of California,
Irvine, California 92697-2025, United States
| | - Scott A. Ryken
- Department
of Chemistry, University of California,
Irvine, California 92697-2025, United States
| | - Ryan A. Zarkesh
- Department
of Chemistry, University of California,
Irvine, California 92697-2025, United States
| | - Alan F. Heyduk
- Department
of Chemistry, University of California,
Irvine, California 92697-2025, United States
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19
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Puri M, Gatard S, Smith DA, Ozerov OV. Competition Studies of Oxidative Addition of Aryl Halides to the (PNP)Rh Fragment. Organometallics 2011. [DOI: 10.1021/om1008956] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mayank Puri
- Department of Chemistry, Brandeis University, MS 015, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Sylvain Gatard
- Department of Chemistry, Brandeis University, MS 015, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Dan A. Smith
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Oleg V. Ozerov
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
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20
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Liu Z, Gao W, Liu X, Luo X, Cui D, Mu Y. Pincer Chromium(II) and Chromium(III) Complexes Supported by Bis(imino)aryl NCN ligands: Synthesis and Catalysis on Isoprene Polymerization. Organometallics 2011. [DOI: 10.1021/om1009236] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhizhou Liu
- State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People’s Republic of China
| | - Wei Gao
- State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People’s Republic of China
| | - Xiaoming Liu
- State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People’s Republic of China
| | - Xuyang Luo
- State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People’s Republic of China
| | - Dongmei Cui
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, People’s Republic of China
| | - Ying Mu
- State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People’s Republic of China
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21
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Timpa SD, Fafard CM, Herbert DE, Ozerov OV. Catalysis of Kumada–Tamao–Corriu coupling by a (POCOP)Rh pincer complex. Dalton Trans 2011; 40:5426-9. [DOI: 10.1039/c1dt10161g] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Christopher Braddock D, Cailleau T, Cansell G, Hermitage SA, Pouwer RH, Redmond JM, White AJ. The reaction of aromatic dialdehydes with enantiopure 1,2-diamines: an expeditious route to enantiopure tricyclic amidines. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.12.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Dauth A, Love JA. Strategy Towards Olefin Carbohydroxylation: Transmetalation of 2-Rhodaoxetanes with Organoboron Nucleophiles. Angew Chem Int Ed Engl 2010; 49:9219-24. [DOI: 10.1002/anie.201003348] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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24
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Dauth A, Love JA. Strategy Towards Olefin Carbohydroxylation: Transmetalation of 2-Rhodaoxetanes with Organoboron Nucleophiles. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201003348] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Liu Z, Gao W, Zhang J, Cui D, Wu Q, Mu Y. Bis(imino)aryl NCN Pincer Aluminum and Zinc Complexes: Synthesis, Characterization, and Catalysis on l-Lactide Polymerization. Organometallics 2010. [DOI: 10.1021/om100344p] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhizhou Liu
- State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, Changchun, 130012, People's Republic of China
| | - Wei Gao
- State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, Changchun, 130012, People's Republic of China
| | - Jingshun Zhang
- State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, Changchun, 130012, People's Republic of China
| | - Dongmei Cui
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, People's Republic of China
| | - Qiaolin Wu
- State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, Changchun, 130012, People's Republic of China
| | - Ying Mu
- State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, Changchun, 130012, People's Republic of China
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26
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Li L, Jiao Y, Brennessel WW, Jones WD. Reactivity and Regioselectivity of Insertion of Unsaturated Molecules into M−C (M = Ir, Rh) Bonds of Cyclometalated Complexes. Organometallics 2010. [DOI: 10.1021/om100796q] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ling Li
- Department of Chemistry, University of Rochester, Rochester, New York 14627
| | - Yunzhe Jiao
- Department of Chemistry, University of Rochester, Rochester, New York 14627
| | | | - William D. Jones
- Department of Chemistry, University of Rochester, Rochester, New York 14627
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27
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An D, Wang J, Dong T, Yang Y, Wen T, Zhu H, Lu X, Wang Y. Mononuclear Bis(imino)arylcopper(I) N-Heterocyclic Carbene Complex: Synthesis, Structure, and Reaction with Organic Azide. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000433] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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28
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Raja MU, Ramesh R, Ahn KH. Rhodium(III) NCN pincer complexes catalyzed transfer hydrogenation of ketones. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.09.152] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Chen S, Li Y, Zhao J, Li X. Chelation-assisted carbon-halogen bond activation by a rhodium(I) complex. Inorg Chem 2009; 48:1198-206. [PMID: 19105736 DOI: 10.1021/ic801878e] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Chelation-assisted activation of C-X bonds (X = Cl, Br, and I) took place in the reaction of [Rh(PPh(3))(2)(acetone)(2)](+) and 2-(2-halophenyl)pyridine or 10-halobenzo[h]quinoline. A series of 16-electron five-coordinate cationic rhodium(III) monohalide complexes was synthesized at room temperature. Neutral octahedral rhodium(III) dihalide complexes were obtained when the corresponding cationic monohalide complexes were further heated in acetone. Rhodium and iridium diiodides with these cyclometalation motifs could be alternatively synthesized from the reaction of the corresponding cyclometalated hydride complexes and I(2). X-ray crystal structures of representative monohalide and dihalide complexes are reported. Octahedral rhodium(III) dihalide complexes are active catalysts for the dimerization of terminal alkynes, while 16-electron cationic rhodium(III) monohalides are inactive.
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Affiliation(s)
- Shanshan Chen
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
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30
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Frech CM, Shimon LJW, Milstein D. Unsaturated Rh(I) and Rh(III) Naphthyl-Based PCP Complexes. Major Steric Effect on Reactivity. Organometallics 2009. [DOI: 10.1021/om801147w] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christian M. Frech
- Department of Inorganic Chemistry, University of Zurich, 8057 Zurich, Switzerland and Departments of Organic Chemistry and Chemical Services, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Linda J. W. Shimon
- Department of Inorganic Chemistry, University of Zurich, 8057 Zurich, Switzerland and Departments of Organic Chemistry and Chemical Services, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - David Milstein
- Department of Inorganic Chemistry, University of Zurich, 8057 Zurich, Switzerland and Departments of Organic Chemistry and Chemical Services, The Weizmann Institute of Science, Rehovot 76100, Israel
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31
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Neshat A, Seambos CL, Beck JF, Schmidt JAR. Mono-anionic acetophenone imine ligands: synthesis, ortho-lithiation and first examples of group (v) metal complexes. Dalton Trans 2009:4987-5000. [DOI: 10.1039/b903836a] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Gao W, Cui D. Highly cis-1,4 selective polymerization of dienes with homogeneous Ziegler-Natta catalysts based on NCN-pincer rare earth metal dichloride precursors. J Am Chem Soc 2008; 130:4984-91. [PMID: 18338895 DOI: 10.1021/ja711146t] [Citation(s) in RCA: 209] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first aryldiimine NCN-pincer ligated rare earth metal dichlorides (2,6-(2,6-C6H3R2N=CH)2-C6H3)LnCl2(THF)2 (Ln = Y, R = Me (1), Et (2), iPr (3); R = Et, Ln = La (4), Nd (5), Gd (6), Sm (7), Eu (8), Tb (9), Dy (10), Ho (11), Yb (12), Lu (13)) were successfully synthesized via transmetalation between 2,6-(2,6-C6H3-R2N=CH)2-C6H3Li and LnCl3(THF)(1-3.5). These complexes are isostructural monomers with two coordinating THF molecules, where the pincer ligand coordinates to the central metal ion in a kappaC:kappaN:kappaN' tridentate mode, adopting a meridional geometry. Complexes 1-6, 9-11, and 13 combined with aluminum tris(alkyl)s and [Ph3C][B(C6F5)4] established a homogeneous Ziegler-Natta catalyst system, which exhibited high activities and excellent cis-1,4 selectivities for the polymerizations of butadiene (T(p) = 25 degrees C, 99.9%; 0 degrees C, 100%) and isoprene (T(p) = 25 degrees C, 98.8%). Remarkably, such high cis-1,4 selectivity almost remained at elevated polymerization temperatures up to 80 degrees C and did not vary with the type of the central lanthanide element, however, which was influenced obviously by the ortho substituent of the N-aryl ring of the ligands and the bulkiness of the aluminum alkyls. The Ln-Al bimetallic cations were considered as the active species. These results shed new light on improving the catalytic performance of the conventional Ziegler-Natta catalysts for the specific selective polymerization of dienes.
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Affiliation(s)
- Wei Gao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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33
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Bis(imino)aryl Complex of Nickel(II): N,C,N-Pincer Type Complex, (2,6-(2,6-Et2PhN=CH)2C6H3)NiBr. B KOREAN CHEM SOC 2008. [DOI: 10.5012/bkcs.2008.29.1.187] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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34
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Xie JH, Nichols JM, Lubek C, Doyle MP. Synthesis of bis(σ-aryl)dirhodium(iii) caprolactamates by oxidative arylation with arylboronic acids. Chem Commun (Camb) 2008:2671-3. [DOI: 10.1039/b806283h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Lee DH, Park SH. Nickel Complexes Having (N-C-N) Tridentate Ligands. JOURNAL OF THE KOREAN CHEMICAL SOCIETY-DAEHAN HWAHAK HOE JEE 2007. [DOI: 10.5012/jkcs.2007.51.6.499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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36
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Baiz TI, Schmidt JAR. A Discrete Ortho-Lithiated Acetophenone Imine Derivative: Isolation, Characterization, and Synthesis of Group IV Metal Complexes. Organometallics 2007. [DOI: 10.1021/om700530z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tamam I. Baiz
- Department of Chemistry, The University of Toledo, 2801 West Bancroft Street, MS 602, Toledo, Ohio 43606-3390
| | - Joseph A. R. Schmidt
- Department of Chemistry, The University of Toledo, 2801 West Bancroft Street, MS 602, Toledo, Ohio 43606-3390
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37
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Stol M, Snelders DJM, Godbole MD, Havenith RWA, Haddleton D, Clarkson G, Lutz M, Spek AL, van Klink GPM, van Koten G. 2,6-Bis(oxazolinyl)phenylnickel(II) Bromide and 2,6-Bis(ketimine)phenylnickel(II) Bromide: Synthesis, Structural Features, and Redox Properties. Organometallics 2007. [DOI: 10.1021/om061055y] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marianne Stol
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Dennis J. M. Snelders
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Meenal D. Godbole
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Remco W. A. Havenith
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - David Haddleton
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Guy Clarkson
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Martin Lutz
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Anthony L. Spek
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Gerard P. M. van Klink
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Gerard van Koten
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
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38
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Oakley SH, Coogan MP, Arthur RJ. Synthesis of Bis(imino)aryl Iridium Pincer Complexes and Demonstration of Catalytic Hydrogen-Transfer Activity. Organometallics 2007. [DOI: 10.1021/om070059f] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sarah H. Oakley
- School of Chemistry, Cardiff University, Park Place, Cardiff, CF10 3AT, Cymru/ Wales, U.K
| | - Michael P. Coogan
- School of Chemistry, Cardiff University, Park Place, Cardiff, CF10 3AT, Cymru/ Wales, U.K
| | - Richard J. Arthur
- School of Chemistry, Cardiff University, Park Place, Cardiff, CF10 3AT, Cymru/ Wales, U.K
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39
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Takenaka K, Minakawa M, Uozumi Y. NCN Pincer Palladium Complexes: Their Preparation via a Ligand Introduction Route and Their Catalytic Properties. J Am Chem Soc 2005; 127:12273-81. [PMID: 16131205 DOI: 10.1021/ja052780n] [Citation(s) in RCA: 146] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A wide range of NCN pincer palladium complexes, [4-tert-butyl-2,6-bis(N-alkylimino)phenyl]chloropalladium (alkyl = n-butyl, benzyl, cyclohexyl, tert-butyl, adamantyl, phenyl, 4-methoxyphenyl), were readily prepared from trans-(4-tert-butyl-2,6-diformylphenyl)chlorobis(triphenylphosphine)palladium via dehydrative introduction of the corresponding alkylimino ligand groups (ligand introduction route) in excellent yields (71-98%). NMR studies on this route for forming pincer complexes revealed the intermediacy of [4-tert-butyl-2,6-bis(N-alkylimino)phenyl]chlorobis(triphenylphosphine)palladium which is in equilibrium with the corresponding NCN pincer complexes via coordination/dissociation of the intramolecular imino groups and triphenylphosphine ligands. A series of chiral NCN pincer complexes bearing pyrroloimidazolone units as the trans-chelating donor groups, [4-tert-butyl-2,6-bis{(3R,7aS)-2-phenylhexahydro-1H-pyrrolo[1,2-c]imidazol-1-on-3-yl}phenyl]chloropalladium, were also prepared from the same precursor via condensation with proline anilides in high yields. The catalytic properties of the NCN imino and the NCN pyrroloimidazolone pincer palladium complexes were examined in the Heck reaction and the asymmetric Michael reaction to demonstrate their high catalytic activity and high enantioselectivity.
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Affiliation(s)
- Kazuhiro Takenaka
- Institute for Molecular Science (IMS), The Graduate University for Advanced Studies, and CREST, Higashiyama 5-1, Myodaiji, Okazaki 444-8787, Japan
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