1
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Du J, Dollberg K, Seed JA, Wooles AJ, von Hänisch C, Liddle ST. Thorium(IV)-antimony complexes exhibiting single, double, and triple polar covalent metal-metal bonds. Nat Chem 2024; 16:780-790. [PMID: 38378948 DOI: 10.1038/s41557-024-01448-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 01/11/2024] [Indexed: 02/22/2024]
Abstract
There is continued burgeoning interest in metal-metal multiple bonding to further our understanding of chemical bonding across the periodic table. However, although polar covalent metal-metal multiple bonding is well known for the d and p blocks, it is relatively underdeveloped for actinides. Homometallic examples are found in spectroscopic or fullerene-confined species, and heterometallic variants exhibiting a polar covalent σ bond supplemented by up to two dative π bonds are more prevalent. Hence, securing polar covalent actinide double and triple metal-metal bonds under normal experimental conditions has been a fundamental target. Here we exploit the protonolysis and dehydrocoupling chemistry of the parent dihydrogen-antimonide anion, to report one-, two- and three-fold thorium-antimony bonds, thus introducing polar covalent actinide-metal multiple bonding under normal experimental conditions between some of the heaviest ions in the periodic table with little or no bulky-substituent protection at the antimony centre. This provides fundamental insights into heavy element multiple bonding, in particular the tension between orbital-energy-driven and overlap-driven covalency for the actinides in a relativistic regime.
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Affiliation(s)
- Jingzhen Du
- Department of Chemistry and Centre for Radiochemistry Research, The University of Manchester, Manchester, UK
- College of Chemistry, Zhengzhou University, Zhengzhou, China
| | - Kevin Dollberg
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften, Philipps-Universität Marburg, Marburg, Germany
| | - John A Seed
- Department of Chemistry and Centre for Radiochemistry Research, The University of Manchester, Manchester, UK
| | - Ashley J Wooles
- Department of Chemistry and Centre for Radiochemistry Research, The University of Manchester, Manchester, UK
| | - Carsten von Hänisch
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften, Philipps-Universität Marburg, Marburg, Germany.
| | - Stephen T Liddle
- Department of Chemistry and Centre for Radiochemistry Research, The University of Manchester, Manchester, UK.
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2
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Escorihuela J, Lledós A, Ujaque G. Anti-Markovnikov Intermolecular Hydroamination of Alkenes and Alkynes: A Mechanistic View. Chem Rev 2023; 123:9139-9203. [PMID: 37406078 PMCID: PMC10416226 DOI: 10.1021/acs.chemrev.2c00482] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Indexed: 07/07/2023]
Abstract
Hydroamination, the addition of an N-H bond across a C-C multiple bond, is a reaction with a great synthetic potential. Important advances have been made in the last decades concerning catalysis of these reactions. However, controlling the regioselectivity in the amine addition toward the formation of anti-Markovnikov products (addition to the less substituted carbon) still remains a challenge, particularly in intermolecular hydroaminations of alkenes and alkynes. The goal of this review is to collect the systems in which intermolecular hydroamination of terminal alkynes and alkenes with anti-Markovnikov regioselectivity has been achieved. The focus will be placed on the mechanistic aspects of such reactions, to discern the step at which regioselectivity is decided and to unravel the factors that favor the anti-Markovnikov regioselectivity. In addition to the processes entailing direct addition of the amine to the C-C multiple bond, alternative pathways, involving several reactions to accomplish anti-Markovnikov regioselectivity (formal hydroamination processes), will also be discussed in this review. The catalysts gathered embrace most of the metal groups of the Periodic Table. Finally, a section discussing radical-mediated and metal-free approaches, as well as heterogeneous catalyzed processes, is also included.
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Affiliation(s)
- Jorge Escorihuela
- Departament
de Química Orgànica, Universitat
de València, 46100 Burjassot, Valencia, Spain
| | - Agustí Lledós
- Departament
de Química and Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universitat Autònoma
de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Catalonia, Spain
| | - Gregori Ujaque
- Departament
de Química and Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universitat Autònoma
de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Catalonia, Spain
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3
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Guo Y, Li X, Liu K, Hu K, Mei L, Chai Z, Gibson JK, Yu J, Shi W. Tetravalent Uranium and Thorium Complexes: Elucidating Disparate Reactivities of An IVCl 2 (An = U, Th) Supported by a Pyridine-Decorated Dianionic Ligand. Inorg Chem 2023. [PMID: 37377407 DOI: 10.1021/acs.inorgchem.3c01145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
Although synthesis, reactivity, and bonding of U(IV) and Th(IV) complexes have been extensively studied, direct comparison of fully analogous compounds is rare. Herein, we report corresponding complexes 1-U and 1-Th, in which U(IV) and Th(IV) are supported by the tetradentate pyridine-decorated dianionic ligand N2NN' (1,1,1-trimethyl-N-(2-(((pyridin-2-ylmethyl)(2-((trimethylsilyl)amino)benzyl)amino)methyl)phenyl)silanamine). Although 1-U and 1-Th are structurally very similar, they display disparate reactivities with TMS3SiK (tris(trimethylsilyl)silylpotassium). The reaction of (N2NN')UCl2 (1-U) and 1 equiv of TMS3SiK in THF unexpectedly formed [Cl(N2NN')U]2O (2-U) featuring an unusual bent U-O-U moiety. In contrast, a salt elimination reaction between (N2NN')ThCl2 (1-Th) and 1 equiv of TMS3SiK led to thorium complex 2-Th, in which the pyridyl group has undergone a 1,4-addition nucleophilic attack. Complex 2-Th serves as a synthon for preparing dimetallic bis-azide complex 3-Th by reaction with NaN3. The complexes were characterized by X-ray crystal diffraction, solution NMR, FT-IR, and elemental analysis. Computations of the formation mechanism of 2-U from 1-U suggest reduced U(III) as a key intermediate for promoting the cleavage of the C-O bonds of THF. The inaccessible nature of Th(III) as an intermediate oxidation state explains the very different reactivity of 1-Th versus 1-U. Given that reactants 1-U and 1-Th and products 2-U and 2-Th all comprise tetravalent actinides, this is an unusual case of very disparate reactivity despite no net change in the oxidation state. Complexes 2-U and 3-Th provide a basis for the synthesis of other dinuclear actinide complexes with novel reactivity and properties.
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Affiliation(s)
- Yan Guo
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Xiaobo Li
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, China
| | - Kang Liu
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Kongqiu Hu
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Lei Mei
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Zhifang Chai
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - John K Gibson
- Chemical Sciences Division, Lawrence Berkeley National Laboratory (LBNL), Berkeley, California 94720, United States
| | - Jipan Yu
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Weiqun Shi
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
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4
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A uranium(
IV
) alkyl complex: Synthesis and catalytic property in carbonyl hydroboration. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200176] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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5
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Makarov K, Kaushansky A, Eisen MS. Catalytic Hydroboration of Esters by Versatile Thorium and Uranium Amide Complexes. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04799] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Konstantin Makarov
- Schulich Faculty of Chemistry, Technion−Israel Institute of Technology, Technion City, 3200008, Israel
| | - Alexander Kaushansky
- Schulich Faculty of Chemistry, Technion−Israel Institute of Technology, Technion City, 3200008, Israel
| | - Moris S. Eisen
- Schulich Faculty of Chemistry, Technion−Israel Institute of Technology, Technion City, 3200008, Israel
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6
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Murillo J, Bhowmick R, Harriman KLM, Gomez-Torres A, Wright J, Meulenberg RW, Miró P, Metta-Magaña A, Murugesu M, Vlaisavljevich B, Fortier S. Actinide arene-metalates: ion pairing effects on the electronic structure of unsupported uranium-arenide sandwich complexes. Chem Sci 2021; 12:13360-13372. [PMID: 34777754 PMCID: PMC8528047 DOI: 10.1039/d1sc03275e] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 09/09/2021] [Indexed: 11/21/2022] Open
Abstract
Addition of [UI2(THF)3(μ-OMe)]2·THF (2·THF) to THF solutions containing 6 equiv. of K[C14H10] generates the heteroleptic dimeric complexes [K(18-crown-6)(THF)2]2[U(η6-C14H10)(η4-C14H10)(μ-OMe)]2·4THF (118C6·4THF) and {[K(THF)3][U(η6-C14H10)(η4-C14H10)(μ-OMe)]}2 (1THF) upon crystallization of the products in THF in the presence or absence of 18-crown-6, respectively. Both 118C6·4THF and 1THF are thermally stable in the solid-state at room temperature; however, after crystallization, they become insoluble in THF or DME solutions and instead gradually decompose upon standing. X-ray diffraction analysis reveals 118C6·4THF and 1THF to be structurally similar, possessing uranium centres sandwiched between bent anthracenide ligands of mixed tetrahapto and hexahapto ligation modes. Yet, the two complexes are distinguished by the close contact potassium-arenide ion pairing that is seen in 1THF but absent in 118C6·4THF, which is observed to have a significant effect on the electronic characteristics of the two complexes. Structural analysis, SQUID magnetometry data, XANES spectral characterization, and computational analyses are generally consistent with U(iv) formal assignments for the metal centres in both 118C6·4THF and 1THF, though noticeable differences are detected between the two species. For instance, the effective magnetic moment of 1THF (3.74 μB) is significantly lower than that of 118C6·4THF (4.40 μB) at 300 K. Furthermore, the XANES data shows the U LIII-edge absorption energy for 1THF to be 0.9 eV higher than that of 118C6·4THF, suggestive of more oxidized metal centres in the former. Of note, CASSCF calculations on the model complex {[U(η6-C14H10)(η4-C14H10)(μ-OMe)]2}2− (1*) shows highly polarized uranium–arenide interactions defined by π-type bonds where the metal contributions are primarily comprised by the 6d-orbitals (7.3 ± 0.6%) with minor participation from the 5f-orbitals (1.5 ± 0.5%). These unique complexes provide new insights into actinide–arenide bonding interactions and show the sensitivity of the electronic structures of the uranium atoms to coordination sphere effects. Use of Chatt metal-arene protocols with uranium leads to the synthesis of the first well-characterized, unsupported actinide–arenide sandwich complexes. The electronic structures of the actinide centres show a key sensitivity to ion pairing effects.![]()
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Affiliation(s)
- Jesse Murillo
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA
| | - Rina Bhowmick
- Department of Chemistry, University of South Dakota Vermillion South Dakota 57069 USA
| | - Katie L M Harriman
- Department of Chemistry and Biomolecular Sciences, University of Ottawa Ottawa Ontario K1N 6N5 Canada
| | - Alejandra Gomez-Torres
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA
| | - Joshua Wright
- Department of Physics, Illinois Institute of Technology Chicago Illinois 60616 USA
| | - Robert W Meulenberg
- Department of Physics and Astronomy and Frontier Institute for Research in Sensor Technologies, University of Maine Orono Maine 04469 USA
| | - Pere Miró
- Department of Chemistry, University of South Dakota Vermillion South Dakota 57069 USA
| | - Alejandro Metta-Magaña
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences, University of Ottawa Ottawa Ontario K1N 6N5 Canada
| | - Bess Vlaisavljevich
- Department of Chemistry, University of South Dakota Vermillion South Dakota 57069 USA
| | - Skye Fortier
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA
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7
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Ward RJ, Del Rosal I, Chirdon DN, Kelley SP, Tarlton ML, Maron L, Walensky JR. Two-Electron Reduction of a U(VI) Complex with Al(C 5Me 5). Inorg Chem 2020; 59:16137-16142. [PMID: 33095563 DOI: 10.1021/acs.inorgchem.0c03036] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The reduction of U(VI) to U(IV) is rare, especially in one step, and not observed electrochemically as a one-wave, two-electron couple. Here, we demonstrate that reduction of the uranium(VI) bis(imido) complex, (C5Me5)2U[═N(4-OiPrC6H4)]2, is readily accomplished with Al(C5Me5), forming the bridging uranium(IV)/aluminum(III) imido complex (C5Me5)2U[μ2-N(4-OiPrC6H4)]2Al(C5Me5). The structure and bonding of the bridging imido complex is examined with electrochemical measurements in tandem with density functional theory calculations.
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Affiliation(s)
- Robert J Ward
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Iker Del Rosal
- Universite de Toulouse and CNRS, INSA, UPS, UMR 5215, LPCNO, Toulouse 31077, France
| | - Danielle N Chirdon
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Steven P Kelley
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Michael L Tarlton
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Laurent Maron
- Universite de Toulouse and CNRS, INSA, UPS, UMR 5215, LPCNO, Toulouse 31077, France
| | - Justin R Walensky
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
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8
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Cobb PJ, Wooles AJ, Liddle ST. A Uranium(VI)-Oxo-Imido Dimer Complex Derived from a Sterically Demanding Triamidoamine. Inorg Chem 2020; 59:10034-10041. [PMID: 32602709 DOI: 10.1021/acs.inorgchem.0c01207] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The reaction of [UO2(μ-Cl)4{K(18-crown-6)}2] with [{N(CH2CH2NSiPri3)3}Li3] gives [{UO(μ-NCH2CH2N[CH2CH2NSiPri3]2)}2] (1), [{(LiCl)(KCl)(18-crown-6)}2] (2), and [LiOSiPri3] (3) in a 1:2:2 ratio. The formation of the oxo-imido 1 involves the cleavage of a N-Si bond and the activation of one of the usually robust U═O bonds of uranyl(VI), resulting in the formation of uranium(VI)-imido and siloxide linkages. Notably, the uranium oxidation state remains unchanged at +6 in the starting material and product. Structural characterization suggests the dominance of a core RN═U═O group, and the dimeric formulation of 1 is supported by bridging imido linkages in a highly asymmetric U2N2 ring. Density functional theory analyses find a σ > π orbital energy ordering for the U═N and U═O bonds in 1, which is uranyl-like in nature. Complexes 1-3 were characterized variously by single crystal X-ray diffraction, multinuclear NMR, IR, Raman, and optical spectroscopies; cyclic voltammetry; and density functional theory.
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Affiliation(s)
- Philip J Cobb
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Ashley J Wooles
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Stephen T Liddle
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
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9
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Abstract
Elaborate synthesis schemes pave the way to f-element and group 3 complexes with multiply bonded imido ligands displaying intriguing reactivity.
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Affiliation(s)
- Dorothea Schädle
- Department of Chemistry
- University of Tübingen
- 72076 Tübingen
- Germany
| | - Reiner Anwander
- Department of Chemistry
- University of Tübingen
- 72076 Tübingen
- Germany
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10
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Liu H, Fridman N, Tamm M, Eisen MS. Catalytic Addition of Alcohols to Carbodiimides Mediated by Benzimidazolin-2-iminato Actinide Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00432] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Heng Liu
- Schulich
Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa City 32000, Israel
| | - Natalia Fridman
- Schulich
Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa City 32000, Israel
| | - Matthias Tamm
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Moris S. Eisen
- Schulich
Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa City 32000, Israel
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11
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Liu H, Fridman N, Tamm M, Eisen MS. Addition of E–H (E = N, P, C, O, S) Bonds to Heterocumulenes Catalyzed by Benzimidazolin-2-iminato Actinide Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00502] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Heng Liu
- Schulich
Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa City 32000, Israel
| | - Natalia Fridman
- Schulich
Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa City 32000, Israel
| | - Matthias Tamm
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Moris S. Eisen
- Schulich
Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa City 32000, Israel
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12
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Liu H, Ghatak T, Eisen MS. Organoactinides in catalytic transformations: scope, mechanisms and Quo Vadis. Chem Commun (Camb) 2017; 53:11278-11297. [DOI: 10.1039/c7cc04415a] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The last decade has witnessed brilliant and remarkable advances in the chemistry of the early actinides in stoichiometric and in challenging catalytic processes. This canvas of knowledge allows the design of chemical reactivities reaching a high level of sophistication. This review highlights the latest results obtained since 2008 on those catalytic processes.
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Affiliation(s)
- Heng Liu
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- Technion
- Israel
| | - Tapas Ghatak
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- Technion
- Israel
| | - Moris S. Eisen
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- Technion
- Israel
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13
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Moskalev MV, Skatova AA, Chudakova VA, Khvoinova NM, Bazyakina NL, Morozov AG, Kazarina OV, Cherkasov AV, Abakumov GA, Fedushkin IL. Hydroamination of alkynes with aromatic amines catalyzed by digallane (dpp-bian)Ga—Ga(dpp-bian). Russ Chem Bull 2016. [DOI: 10.1007/s11172-015-1234-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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Huang W, Diaconescu PL. Reactivity and Properties of Metal Complexes Enabled by Flexible and Redox-Active Ligands with a Ferrocene Backbone. Inorg Chem 2016; 55:10013-10023. [DOI: 10.1021/acs.inorgchem.6b01118] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Wenliang Huang
- Department of Chemistry and
Biochemistry, University of California, Los Angeles, 607 Charles
E Young Drive East, Los Angeles, California 90095, United States
| | - Paula L. Diaconescu
- Department of Chemistry and
Biochemistry, University of California, Los Angeles, 607 Charles
E Young Drive East, Los Angeles, California 90095, United States
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15
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Monreal MJ, Seaman LA, Goff GS, Michalczyk R, Morris DE, Scott BL, Kiplinger JL. New Twists and Turns for Actinide Chemistry: Organometallic Infinite Coordination Polymers of Thorium Diazide. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510851] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Lani A. Seaman
- Los Alamos National Laboratory; Stop J-514 Los Alamos NM 87545 USA
| | - George S. Goff
- Los Alamos National Laboratory; Stop J-514 Los Alamos NM 87545 USA
| | | | - David E. Morris
- Los Alamos National Laboratory; Stop J-514 Los Alamos NM 87545 USA
| | - Brian L. Scott
- Los Alamos National Laboratory; Stop J-514 Los Alamos NM 87545 USA
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16
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Monreal MJ, Seaman LA, Goff GS, Michalczyk R, Morris DE, Scott BL, Kiplinger JL. New Twists and Turns for Actinide Chemistry: Organometallic Infinite Coordination Polymers of Thorium Diazide. Angew Chem Int Ed Engl 2016; 55:3631-6. [PMID: 26865502 DOI: 10.1002/anie.201510851] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Indexed: 11/12/2022]
Abstract
Two organometallic 1D infinite coordination polymers and two organometallic monometallic complexes of thorium diazide have been synthesized and characterized. Steric control of these self-assembled arrays, which are dense in thorium and nitrogen, has also been demonstrated: infinite chains can be circumvented by using steric bulk either at the metallocene or with a donor ligand in the wedge.
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Affiliation(s)
- Marisa J Monreal
- Los Alamos National Laboratory, Stop J-514, Los Alamos, NM, 87545, USA
| | - Lani A Seaman
- Los Alamos National Laboratory, Stop J-514, Los Alamos, NM, 87545, USA
| | - George S Goff
- Los Alamos National Laboratory, Stop J-514, Los Alamos, NM, 87545, USA
| | | | - David E Morris
- Los Alamos National Laboratory, Stop J-514, Los Alamos, NM, 87545, USA
| | - Brian L Scott
- Los Alamos National Laboratory, Stop J-514, Los Alamos, NM, 87545, USA
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17
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Nayal OS, Thakur MS, Kumar M, Sharma S, Kumar N. Tin-Catalyzed Selective Reductive Hydroamination of Alkynes for the Synthesis of Tertiary Amines. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201501088] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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18
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19
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Tobisch S. Aluminium-catalysed intramolecular hydroamination of aminoalkenes: computational perusal of alternative pathways for aminoalkene activation. Dalton Trans 2015; 44:12169-79. [PMID: 25801632 DOI: 10.1039/c5dt00121h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A comprehensive computational examination of alternatively plausible mechanistic pathways for the intramolecular hydroamination (HA) of aminoalkenes utilising a recently reported novel phenylene-diamine aluminium amido compound is presented. On the one hand, a proton-assisted concerted N-C/C-H bond-forming pathway to afford the cycloamine in a single step can be invoked, and, on the other, a stepwise σ-insertive pathway that involves a relatively fast, reversible migratory olefin 1,2-insertion step linked to a less rapid, irreversible Al-C alkyl bond protonolysis. The present study, which employs a sophisticated and reliable computational methodology, supports the prevailing mechanism to be a stepwise σ-insertive pathway. The predicted effective barrier for turnover-limiting aminolysis compares favourably with reported catalytic performance data. Non-competitive kinetic demands militates against the operation of the concerted proton-assisted pathway, which describes N-C bond-forming ring closure triggered by concomitant amino proton delivery at the C[double bond, length as m-dash]C linkage evolving through a six-centre transition state structure. The valuable insights into mechanistic intricacies of aluminium-mediated intramolecular HA reported herein will help guide the rational design of group 13 metal-based HA catalysts.
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Affiliation(s)
- Sven Tobisch
- School of Chemistry, University of St Andrews, Purdie Building, North Haugh, St Andrews, UK KY16 9ST.
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20
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Zhang X, Tobisch S, Hultzsch KC. σ-Insertive Mechanism versus Concerted Non-insertive Mechanism in the Intramolecular Hydroamination of Aminoalkenes Catalyzed by Phenoxyamine Magnesium Complexes: A Synthetic and Computational Study. Chemistry 2015; 21:7841-57. [DOI: 10.1002/chem.201406468] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 03/09/2015] [Indexed: 11/08/2022]
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21
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Tobisch S. Computational Mechanistic Elucidation of the Intramolecular Aminoalkene Hydroamination Catalysed by Iminoanilide Alkaline-Earth Compounds. Chemistry 2015; 21:6765-79. [DOI: 10.1002/chem.201500233] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Indexed: 11/06/2022]
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22
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Johnson SA, Bart SC. Achievements in uranium alkyl chemistry: celebrating sixty years of synthetic pursuits. Dalton Trans 2015; 44:7710-26. [PMID: 25283733 DOI: 10.1039/c4dt01621a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This Perspective highlights the synthesis, characterization, and reactivity of significant organouranium complexes with σ-bonded alkyl ligands.
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Affiliation(s)
- Sara A. Johnson
- H.C. Brown Laboratory
- Department of Chemistry
- Purdue University
- West Lafayette
- USA
| | - Suzanne C. Bart
- H.C. Brown Laboratory
- Department of Chemistry
- Purdue University
- West Lafayette
- USA
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23
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CH Bond Activation of Hydrocarbons Mediated by Rare-Earth Metals and Actinides. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2015. [DOI: 10.1016/bs.adomc.2015.08.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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24
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Karmel ISR, Fridman N, Tamm M, Eisen MS. Mono(imidazolin-2-iminato) Actinide Complexes: Synthesis and Application in the Catalytic Dimerization of Aldehydes. J Am Chem Soc 2014; 136:17180-92. [DOI: 10.1021/ja5091436] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Isabell S. R. Karmel
- Schulich
Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion − Israel Institute of Technology, Technion City, 32000 Israel
| | - Natalia Fridman
- Schulich
Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion − Israel Institute of Technology, Technion City, 32000 Israel
| | - Matthias Tamm
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Moris S. Eisen
- Schulich
Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion − Israel Institute of Technology, Technion City, 32000 Israel
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25
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Han J, Lu Z, Hammond GB, Xu B. Synthesis of Pyrrolidines and Pyrroles via Tandem Amination/Cyanation/Alkylation and Amination/Oxidation Sequences. European J Org Chem 2014; 2014:5786-5792. [PMID: 25386099 DOI: 10.1002/ejoc.201402748] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Starting from a primary amine-tethered alkyne 1, a copper-catalyzed three-component tandem amination/cyanation/alkylation sequence gives α-CN pyrrolidine 6 in good yield and regioselectivity. Also, a silver mediated tandem amination/oxidation of a secondary amine-tethered alkyne 7 produces functionalized pyrrole 8 in good yield. All reactions were conducted in one pot without any protection/deprotection steps.
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26
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Affiliation(s)
- Douglas R Kindra
- Department of Chemistry, University of California , Irvine, California 92697-2025, United States
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27
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Hayes CE, Gill DE, Brown ML, Leznoff DB. Mixed‐Donor Amido–Siloxo Actinide(IV) Halide and Alkyl Complexes with an Aryl C
ipso
Interaction. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402226] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Cassandra E. Hayes
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada, http://www.sfu.ca/chemistry/people/profiles/dleznoff.html
| | - Dayle E. Gill
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada, http://www.sfu.ca/chemistry/people/profiles/dleznoff.html
| | - Matthew L. Brown
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada, http://www.sfu.ca/chemistry/people/profiles/dleznoff.html
| | - Daniel B. Leznoff
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada, http://www.sfu.ca/chemistry/people/profiles/dleznoff.html
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28
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Vuong KQ, Wong CM, Bhadbhade M, Messerle BA. Bi- and tri-metallic Rh and Ir complexes containing click derived bis- and tris-(pyrazolyl-1,2,3-triazolyl) N-N' donor ligands and their application as catalysts for the dihydroalkoxylation of alkynes. Dalton Trans 2014; 43:7540-53. [PMID: 24699761 DOI: 10.1039/c3dt53295j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of bi-topic and tri-topic pyrazolyl-1,2,3-triazolyl donor ligands (; = 1,X-bis((4-((1H-pyrazol-1-yl)methyl)-1H-1,2,3-triazol-1-yl)methyl)benzene (X = 2, 3 and 4; o-C6H4(PyT)2, m-C6H4(PyT)2 and p-C6H4(PyT)2) and = 1,3,5-tris((4-((1H-pyrazol-1-yl)methyl)-1H-1,2,3-triazol-1-yl)methyl)benzene, 1,3,5-C6H3(PyT)3) were conveniently synthesised in 'one pot' reactions using the Cu(i) catalysed 'click' reaction. Rh(i), Ir(i), Rh(iii) and Ir(iii) complexes with ligands of the general formulae C6H6-n[(PyT)M(CO)2]n[BAr]n (M = Rh, Ir; n = 2, 3; ; ) and C6H6-n[(PyT)MCp*Cl]n[BAr]n (M = Rh, Ir; n = 2, 3; ; ) were synthesised and fully characterised. In solution each of the bi- or tri-metallic complexes and exists as a mixture of two (, ) or three ( and ) diastereomers due to the presence of a chiral centre at each metal centre in these complexes. The solid state structures of complexes and were determined by single crystal X-ray crystallography and showed that each bidentate arm of these multitopic ligands coordinates to the Rh or Ir centre in a bidentate fashion via the pyrazolyl-N2 and 1,2,3-triazolyl N3' donors. The intermetallic distances in these solid state structures vary from 8.66 Å to 15.17 Å. These complexes were assessed as catalysts for the dihydroalkoxylation of alkynes using the cyclisation of 2-(5-hydroxypent-1-ynyl)benzyl alcohol, , to a mixture of two spiroketals, 2,3,4,5-tetrahydro-spirol[furan-2,3'-isochroman], , and 3',4',5',6'-tetrahydro-spiro[isobenzofuran-1(3H),2'(2H)pyran], , as the model reaction. The Rh(i) complexes (), with the highest TOF of 2052 h(-1) for complex , were the most active catalysts when compared with the other complexes under investigation here. The Ir(i) complexes () were moderately active as catalysts for the same transformation. No significant enhancement in catalytic reactivity was observed with the Rh(i) series bi- and trimetallic complexes () when compared with their monometallic analogues. The bi- and trimetallic Ir(i) complexes () were much more efficient as catalysts for this transformation than their monometallic analogues, suggesting some intermetallic cooperativity. Rh(iii), , and Ir(iii), , complexes were not active as catalysts for this transformation.
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Affiliation(s)
- Khuong Q Vuong
- School of Chemistry, The University of New South Wales, Kensington, NSW 2052, Australia
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29
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30
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Matson EM, Franke SM, Anderson NH, Cook TD, Fanwick PE, Bart SC. Radical Reductive Elimination from Tetrabenzyluranium Mediated by an Iminoquinone Ligand. Organometallics 2014. [DOI: 10.1021/om4012104] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ellen M. Matson
- H. C. Brown Laboratory, Department
of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Sebastian M. Franke
- Department of Chemistry and Pharmacy, Inorganic
Chemistry, Friedrich Alexander University, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Nickolas H. Anderson
- H. C. Brown Laboratory, Department
of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Timothy D. Cook
- H. C. Brown Laboratory, Department
of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Phillip E. Fanwick
- H. C. Brown Laboratory, Department
of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Suzanne C. Bart
- H. C. Brown Laboratory, Department
of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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31
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La Pierre HS, Meyer K. Activation of Small Molecules by Molecular Uranium Complexes. PROGRESS IN INORGANIC CHEMISTRY 2014. [DOI: 10.1002/9781118792797.ch05] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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32
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Gardner BM, Cleaves PA, Kefalidis CE, Fang J, Maron L, Lewis W, Blake AJ, Liddle ST. The role of 5f-orbital participation in unexpected inversion of the σ-bond metathesis reactivity trend of triamidoamine thorium(iv) and uranium(iv) alkyls. Chem Sci 2014. [DOI: 10.1039/c4sc00182f] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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33
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Jin L, Wu Y, Zhao X. A novel non-insertive mechanism for neutral organozirconium-catalyzed aminoalkene hydroamination: Density functional theory survey. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.06.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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34
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Duhović S, Oria JV, Odoh SO, Schreckenbach G, Batista ER, Diaconescu PL. Investigation of the Electronic Structure of Mono(1,1′-Diamidoferrocene) Uranium(IV) Complexes. Organometallics 2013. [DOI: 10.1021/om400521k] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Selma Duhović
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095, United States
| | - Jeremy V. Oria
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095, United States
| | - Samuel O. Odoh
- Department
of Chemistry, University of Manitoba, Winnipeg, MB, Canada R3T 2N2
| | - Georg Schreckenbach
- Department
of Chemistry, University of Manitoba, Winnipeg, MB, Canada R3T 2N2
| | - Enrique R. Batista
- Los Alamos National Laboratory, Los
Alamos, New Mexico 87545, United States
| | - Paula L. Diaconescu
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095, United States
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35
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Matson EM, Opperwall SR, Fanwick PE, Bart SC. “Oxidative Addition” of Halogens to Uranium(IV) Bis(amidophenolate) Complexes. Inorg Chem 2013; 52:7295-304. [PMID: 23734850 DOI: 10.1021/ic4009812] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Ellen M. Matson
- H. C. Brown Laboratory, Department
of Chemistry, Purdue University, West Lafayette,
Indiana 47907, United
States
| | - Stacey R. Opperwall
- H. C. Brown Laboratory, Department
of Chemistry, Purdue University, West Lafayette,
Indiana 47907, United
States
| | - Phillip E. Fanwick
- H. C. Brown Laboratory, Department
of Chemistry, Purdue University, West Lafayette,
Indiana 47907, United
States
| | - Suzanne C. Bart
- H. C. Brown Laboratory, Department
of Chemistry, Purdue University, West Lafayette,
Indiana 47907, United
States
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36
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Matson EM, Forrest WP, Fanwick PE, Bart SC. Synthesis and Reactivity of Trivalent Tp*U(CH2Ph)2(THF): Insertion vs Oxidation at Low-Valent Uranium–Carbon Bonds. Organometallics 2013. [DOI: 10.1021/om301139h] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ellen M. Matson
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - William P. Forrest
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Phillip E. Fanwick
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Suzanne C. Bart
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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37
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Hayes CE, Sarazin Y, Katz MJ, Carpentier JF, Leznoff DB. Diamido-Ether Actinide Complexes as Initiators for Lactide Ring-Opening Polymerization. Organometallics 2013. [DOI: 10.1021/om300993r] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cassandra E. Hayes
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada V5A 1S6
| | - Yann Sarazin
- Institut des Sciences Chimiques de Rennes, UMR 6226
CNRS, Université de Rennes 1, Campus
de Beaulieu, 35042 Rennes Cedex, France
| | - Michael J. Katz
- Department of Chemistry, Northwestern University, 2145 Sheridan
Road, Evanston, Illinois, United States 60208-3113
| | - Jean-François Carpentier
- Institut des Sciences Chimiques de Rennes, UMR 6226
CNRS, Université de Rennes 1, Campus
de Beaulieu, 35042 Rennes Cedex, France
| | - Daniel B. Leznoff
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada V5A 1S6
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38
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Mora E, Maria L, Biswas B, Camp C, Santos IC, Pécaut J, Cruz A, Carretas JM, Marçalo J, Mazzanti M. Diamine Bis(phenolate) as Supporting Ligands in Organoactinide(IV) Chemistry. Synthesis, Structural Characterization, and Reactivity of Stable Dialkyl Derivatives. Organometallics 2012. [DOI: 10.1021/om3010806] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Elsa Mora
- Unidade de Ciências Químicas e Radiofarmacêuticas, IST/ITN, Instituto Superior Técnico, Universidade Técnica de Lisboa, 2686-953 Sacavém, Portugal
| | - Leonor Maria
- Unidade de Ciências Químicas e Radiofarmacêuticas, IST/ITN, Instituto Superior Técnico, Universidade Técnica de Lisboa, 2686-953 Sacavém, Portugal
| | - Biplab Biswas
- Laboratoire de Reconnaissance
Ionique et Chimie de Coordination, SCIB, UMR-E CEA/UJF-Grenoble 1,
INAC, CEA-Grenoble, 38054 Grenoble Cedex
09, France
| | - Clément Camp
- Laboratoire de Reconnaissance
Ionique et Chimie de Coordination, SCIB, UMR-E CEA/UJF-Grenoble 1,
INAC, CEA-Grenoble, 38054 Grenoble Cedex
09, France
| | - Isabel C. Santos
- Unidade de Ciências Químicas e Radiofarmacêuticas, IST/ITN, Instituto Superior Técnico, Universidade Técnica de Lisboa, 2686-953 Sacavém, Portugal
| | - Jacques Pécaut
- Laboratoire de Reconnaissance
Ionique et Chimie de Coordination, SCIB, UMR-E CEA/UJF-Grenoble 1,
INAC, CEA-Grenoble, 38054 Grenoble Cedex
09, France
| | - Adelaide Cruz
- Unidade de Ciências Químicas e Radiofarmacêuticas, IST/ITN, Instituto Superior Técnico, Universidade Técnica de Lisboa, 2686-953 Sacavém, Portugal
| | - José M. Carretas
- Unidade de Ciências Químicas e Radiofarmacêuticas, IST/ITN, Instituto Superior Técnico, Universidade Técnica de Lisboa, 2686-953 Sacavém, Portugal
| | - Joaquim Marçalo
- Unidade de Ciências Químicas e Radiofarmacêuticas, IST/ITN, Instituto Superior Técnico, Universidade Técnica de Lisboa, 2686-953 Sacavém, Portugal
| | - Marinella Mazzanti
- Laboratoire de Reconnaissance
Ionique et Chimie de Coordination, SCIB, UMR-E CEA/UJF-Grenoble 1,
INAC, CEA-Grenoble, 38054 Grenoble Cedex
09, France
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39
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Eom D, Mo J, Lee PH, Gao Z, Kim S. Synthesis of Vinyl Sulfides and Vinylamines through Catalytic Intramolecular Hydroarylation in the Presence of FeCl3and AgOTf. European J Org Chem 2012. [DOI: 10.1002/ejoc.201201270] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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40
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Wobser SD, Marks TJ. Organothorium-Catalyzed Hydroalkoxylation/Cyclization of Alkynyl Alcohols. Scope, Mechanism, and Ancillary Ligand Effects. Organometallics 2012. [DOI: 10.1021/om300881b] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Stephen D. Wobser
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113,
United States
| | - Tobin J. Marks
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113,
United States
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41
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Jones MB, Gaunt AJ. Recent developments in synthesis and structural chemistry of nonaqueous actinide complexes. Chem Rev 2012; 113:1137-98. [PMID: 23130707 DOI: 10.1021/cr300198m] [Citation(s) in RCA: 262] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthew B Jones
- Inorganic, Isotope, and Actinide Group, Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
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42
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Hayes CE, Platel RH, Schafer LL, Leznoff DB. Diamido-Ether Actinide Complexes as Catalysts for the Intramolecular Hydroamination of Aminoalkenes. Organometallics 2012. [DOI: 10.1021/om300410h] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cassandra E. Hayes
- Department of Chemistry, Simon
Fraser University, 8888 University Drive, Burnaby, British Columbia
V5A 1S6, Canada
| | - Rachel H. Platel
- Department
of Chemistry, University
of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T
1Z1, Canada
| | - Laurel L. Schafer
- Department
of Chemistry, University
of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T
1Z1, Canada
| | - Daniel B. Leznoff
- Department of Chemistry, Simon
Fraser University, 8888 University Drive, Burnaby, British Columbia
V5A 1S6, Canada
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43
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Matson EM, Fanwick PE, Bart SC. Diazoalkane Reduction for the Synthesis of Uranium Hydrazonido Complexes. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200606] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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44
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Fang J, Walshe A, Maron L, Baker RJ. Ring-Opening Polymerization of Epoxides Catalyzed by Uranyl Complexes: An Experimental and Theoretical Study of the Reaction Mechanism. Inorg Chem 2012; 51:9132-40. [DOI: 10.1021/ic3015942] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jian Fang
- College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000,
China
- LPCNO, INSA Toulouse, 137 Avenue de Rangueil, 31077 Toulouse,
France
| | - Aurora Walshe
- School
of Chemistry, University of Dublin, Trinity College, Dublin 2, Ireland
| | - Laurent Maron
- LPCNO, INSA Toulouse, 137 Avenue de Rangueil, 31077 Toulouse,
France
| | - Robert J. Baker
- School
of Chemistry, University of Dublin, Trinity College, Dublin 2, Ireland
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45
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Katari M, Rao MN, Rajaraman G, Ghosh P. Computational Insight into a Gold(I) N-Heterocyclic Carbene Mediated Alkyne Hydroamination Reaction. Inorg Chem 2012; 51:5593-604. [DOI: 10.1021/ic2024605] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Madanakrishna Katari
- Department of Chemistry Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Mitta Nageswar Rao
- Department of Chemistry Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Gopalan Rajaraman
- Department of Chemistry Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Prasenjit Ghosh
- Department of Chemistry Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
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46
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Tobisch S. Metal-Ligand Cooperation in Catalytic Intramolecular Hydroamination: A Computational Study of Iridium-Pyrazolato Cooperative Activation of Aminoalkenes. Chemistry 2012; 18:7248-62. [DOI: 10.1002/chem.201103620] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Revised: 02/27/2012] [Indexed: 11/09/2022]
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47
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Kefalidis CE, Tsipis CA. DFT study of the mechanism of hydroamination of ethylene with ammonia catalyzed by diplatinum(II) complexes: Inner- or outer-sphere? J Comput Chem 2012; 33:1689-700. [DOI: 10.1002/jcc.22999] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 03/19/2012] [Accepted: 03/21/2012] [Indexed: 11/12/2022]
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48
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Kraft SJ, Fanwick PE, Bart SC. Carbon-carbon reductive elimination from homoleptic uranium(IV) alkyls induced by redox-active ligands. J Am Chem Soc 2012; 134:6160-8. [PMID: 22468980 DOI: 10.1021/ja209524u] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis, characterization, and reactivity of the homoleptic uranium(IV) alkyls U(CH(2)C(6)H(5))(4) (1-Ph), U(CH(2)-p-CH(3)C(6)H(4))(4) (1-p-Me), and U(CH(2)-m-(CH(3))(2)C(6)H(3))(4) (1-m-Me(2)) are reported. The addition of 4 equiv of K(CH(2)Ar) (Ar = Ph, p-CH(3)C(6)H(4), m-(CH(3))(2)C(6)H(3)) to UCl(4) at -108 °C produces 1-Ph in good yields and 1-p-Me and 1-m-Me(2) in moderate yields. Further characterization of 1-Ph by X-ray crystallography confirmed η(4)-coordination of each benzyl ligand to the uranium center. Magnetic studies produced an effective magnetic moment of 2.60 μ(B) at 23 °C, which is consistent with a tetravalent uranium 5f(2) electronic configuration. Addition of 1 equiv of the redox-active α-diimine (Mes)DAB(Me) ((Mes)DAB(Me) = [ArN═C(Me)C(Me)═NAr]; Ar = 2,4,6-trimethylphenyl (Mes)) to 1-Ph results in reductive elimination of 1 equiv of bibenzyl (PhCH(2)CH(2)Ph), affording ((Mes)DAB(Me))U(CH(2)C(6)H(5))(2) (2-Ph). Treating an equimolar mixture of 1-Ph and 1-Ph-d(28) with (Mes)DAB(Me) forms the products from monomolecular reductive elimination, 2-Ph, 2-Ph-d(14), bibenzyl, and bibenzyl-d(14). This is confirmed by (1)H NMR spectroscopy and GC/MS analysis of both organometallic and organic products. Addition of 1 equiv of 1,2-bis(dimethylphosphino)ethane (dmpe) to 1-Ph results in formation of the previously synthesized (dmpe)U(CH(2)C(6)H(5))(4) (3-Ph), indicating the redox-innocent chelating phosphine stabilizes the uranium center in 3-Ph and prevents reductive elimination of bibenzyl. Full characterization for 3-Ph, including X-ray crystallography, is reported.
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Affiliation(s)
- Steven J Kraft
- H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, USA
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Werkmeister S, Fleischer S, Zhou S, Junge K, Beller M. Development of new hydrogenations of imines and benign reductive hydroaminations: zinc triflate as a catalyst. CHEMSUSCHEM 2012; 5:777-782. [PMID: 22323333 DOI: 10.1002/cssc.201100633] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Revised: 11/14/2011] [Indexed: 05/31/2023]
Abstract
The hydrogenation of imines to amines in the presence of catalytic amounts of zinc triflate has been demonstrated for the first time. In addition, an efficient procedure for the reductive hydroamination of alkynes to amines is presented using zinc triflate as a catalyst precursor. In both protocols a variety of different functional groups are tolerated, and the reactions proceed smoothly in high yields.
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Affiliation(s)
- Svenja Werkmeister
- Leibniz-Institut für Katalyse e V an der Universität Rostock, Rostock, Germany
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Hua C, Vuong KQ, Bhadbhade M, Messerle BA. New Rhodium(I) and Iridium(I) Complexes Containing Mixed Pyrazolyl–1,2,3-Triazolyl Ligands As Catalysts for Hydroamination. Organometallics 2012. [DOI: 10.1021/om201171b] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Carol Hua
- School
of Chemistry and ‡Mark Wainwright Analytical Centre, The University of New South Wales, Kensington, NSW 2052,
Australia
| | - Khuong Q. Vuong
- School
of Chemistry and ‡Mark Wainwright Analytical Centre, The University of New South Wales, Kensington, NSW 2052,
Australia
| | - Mohan Bhadbhade
- School
of Chemistry and ‡Mark Wainwright Analytical Centre, The University of New South Wales, Kensington, NSW 2052,
Australia
| | - Barbara A. Messerle
- School
of Chemistry and ‡Mark Wainwright Analytical Centre, The University of New South Wales, Kensington, NSW 2052,
Australia
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