1
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Körner L, Ho LP, Puchta R, Stanger A, Tamm M. Dimorpholinoacetylene and Its Use for the Synthesis of Tetraaminocyclobutadiene Species. Chemistry 2022; 28:e202202737. [PMID: 36148808 PMCID: PMC9828195 DOI: 10.1002/chem.202202737] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Indexed: 01/12/2023]
Abstract
The new diaminoacetylene (DAA) dimorpholinoacetylene (3) was prepared from 1,1-dimorpholinoethene (1) by bromination to form the dibromoketene aminal 2, which upon lithiation afforded 3 through a Fritsch-Buttenberg-Wiechell rearrangement. Heating 3 at elevated temperatures resulted in a complete conversion into the dimer 1,1,2,4-tetramorpholino-1-buten-3-yne (4), which was used for the synthesis of four-membered cyclic bent allene (CBA) transition-metal complexes of the type [(CBA)MLn ] (5-7; MLn =AuCl, RhCl(COD), RhCl(CO)2 ; CBA=1,3,4,4-tetramorpholino-1,2-cyclobutadiene; COD=1,5-cyclooctadiene). The reaction of 3 with tetraethylammonium bromide gave 1,2,3,4-tetramorpholinocyclobutenylium bromide (8), which reacted with bromine to form 1,2,3,4-tetra(morpholino)cyclobutenediylium bis(tribromide) (9). Compound 9 represents the first fully characterized compound containing a tetraaminocyclobutadiene dication and displays a nearly planar C4 N4 core as shown by X-ray diffraction analysis. Detailed quantum chemical calculations were performed to assess the aromaticity of tetraaminocyclubutadiene dications by employing the Nucleus Independent Chemical Shift (NICS) method and current density analysis.
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Affiliation(s)
- Lukas Körner
- Institut für Anorganische und Analytische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
| | - Luong Phong Ho
- Institut für Anorganische und Analytische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
| | - Ralph Puchta
- Department Chemie und PharmazieFriedrich-Alexander Universität Erlangen-NürnbergEgerlandstr. 191058ErlangenGermany
| | - Amnon Stanger
- Schulich Department of Chemistry, TechnionHaifa32000Israel
| | - Matthias Tamm
- Institut für Anorganische und Analytische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
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2
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Cui M, Jia G. Organometallic Chemistry of Transition Metal Alkylidyne Complexes Centered at Metathesis Reactions. J Am Chem Soc 2022; 144:12546-12566. [PMID: 35793547 DOI: 10.1021/jacs.2c01192] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Transition metals form a variety of alkylidyne complexes with either a d0 metal center (high-valent) or a non-d0 metal center (low-valent). One of the most interesting properties of alkylidyne complexes is that they can undergo or mediate metathesis reactions. The most well-studied metathesis reactions are alkyne metathesis involving high-valent alkylidynes. High-valent alkylidynes can also undergo metathesis reactions with heterotriple bonded species such as N≡CR, P≡CR, and N≡NR+. Metathesis reactions involving low-valent alkylidynes are less known. Highly efficient alkyne metathesis catalysts have been developed based on Mo(VI) and W(VI) alkylidynes. Catalytic cross-metathesis of nitriles with alkynes has also been achieved with M(VI) (M = W, Mo) alkylidyne or nitrido complexes. The metathesis activity of alkylidyne complexes is sensitively dependent on metals, supporting ligands and substituents of alkylidynes. Beyond metathesis, metal alkylidynes can also promote other reactions including alkyne polymerization. The remaining shortcomings and opportunities in the field are assessed.
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Affiliation(s)
- Mingxu Cui
- Department of Chemistry, The Hong Kong University of Science and Technology, Kowloon, SAR, Hong Kong, China
| | - Guochen Jia
- Department of Chemistry, The Hong Kong University of Science and Technology, Kowloon, SAR, Hong Kong, China.,HKUST Shenzhen Research Institute, Shenzhen, 518057, China
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3
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Wei W, Sung HHY, Williams ID, Jia G. Reactions of Alkyl‐Substituted Rhenacyclobutadiene Complexes with Electron‐Rich Alkynes. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wei Wei
- Department of Chemistry Hong Kong University of Science and Technology Clear Water Bay Hong Kong China
| | - Herman H. Y. Sung
- Department of Chemistry Hong Kong University of Science and Technology Clear Water Bay Hong Kong China
| | - Ian D. Williams
- Department of Chemistry Hong Kong University of Science and Technology Clear Water Bay Hong Kong China
| | - Guochen Jia
- Department of Chemistry Hong Kong University of Science and Technology Clear Water Bay Hong Kong China
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4
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Hackl L, Ho LP, Bockhardt D, Bannenberg T, Tamm M. Tetraaminocyclopentadienone Iron Complexes as Hydrogenation Catalysts. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00075] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ludwig Hackl
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, 38106 Braunschweig, Germany
| | - Luong Phong Ho
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, 38106 Braunschweig, Germany
| | - Dustin Bockhardt
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, 38106 Braunschweig, Germany
| | - Thomas Bannenberg
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, 38106 Braunschweig, Germany
| | - Matthias Tamm
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, 38106 Braunschweig, Germany
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5
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Wei W, Xu X, Lee KH, Lin R, Sung HHY, Williams ID, Lin Z, Jia G. Reactions of Rhenacyclobutadiene Complexes with Allenes. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00493] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wei Wei
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR 0000, People’s Republic of China
| | - Xin Xu
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR 0000, People’s Republic of China
| | - Ka-Ho Lee
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR 0000, People’s Republic of China
| | - Ran Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR 0000, People’s Republic of China
| | - Herman H. Y. Sung
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR 0000, People’s Republic of China
| | - Ian D. Williams
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR 0000, People’s Republic of China
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR 0000, People’s Republic of China
| | - Guochen Jia
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR 0000, People’s Republic of China
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6
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Affiliation(s)
- Ludwig Hackl
- Technische Universität Braunschweig, Institute of Inorganic and Analytical Chemistry, Hagenring 30, 38106 Braunschweig, Germany
| | - Lukas Körner
- Technische Universität Braunschweig, Institute of Inorganic and Analytical Chemistry, Hagenring 30, 38106 Braunschweig, Germany
| | - Matthias Tamm
- Technische Universität Braunschweig, Institute of Inorganic and Analytical Chemistry, Hagenring 30, 38106 Braunschweig, Germany
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7
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Zier ML, Colombel-Rouen S, Ehrhorn H, Bockfeld D, Trolez Y, Mauduit M, Tamm M. Catalytic Alkyne and Diyne Metathesis with Mixed Fluoroalkoxy-Siloxy Molybdenum Alkylidyne Complexes. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00290] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Manuel L. Zier
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Sophie Colombel-Rouen
- Univ Rennes; Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR−UMR 6226, F-35000 Rennes, France
| | - Henrike Ehrhorn
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Dirk Bockfeld
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Yann Trolez
- Univ Rennes; Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR−UMR 6226, F-35000 Rennes, France
| | - Marc Mauduit
- Univ Rennes; Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR−UMR 6226, F-35000 Rennes, France
| | - Matthias Tamm
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
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8
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Abstract
The linear μ-carbido complex [Rh2(μ-C)Cl2(dppm)2] (dppm = bis(diphenylphosphino)methane) reacts with a benzyne equivalent (Me3SiC6H4OTf-2/F-) to afford [Rh2(μ-CC6H4)(μ-Cl)(C6H5)Cl2(μ-dppm)2], in which the benzyne moiety adds across one of the two metal-carbon double bonds.
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Affiliation(s)
- Harrison J Barnett
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory ACT 2601, Australia.
| | - Anthony F Hill
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory ACT 2601, Australia.
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9
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Chen S, Liu L, Gao X, Hua Y, Peng L, Zhang Y, Yang L, Tan Y, He F, Xia H. Addition of alkynes and osmium carbynes towards functionalized d π-p π conjugated systems. Nat Commun 2020; 11:4651. [PMID: 32938934 PMCID: PMC7495419 DOI: 10.1038/s41467-020-18498-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 08/21/2020] [Indexed: 12/12/2022] Open
Abstract
The metal-carbon triple bonds and carbon-carbon triple bonds are both highly unsaturated bonds. As a result, their reactions tend to afford cycloaddition intermediates or products. Herein, we report a reaction of M≡C and C≡C bonds that affords acyclic addition products. These newly discovered reactions are highly efficient, regio- and stereospecific, with good functional group tolerance, and are robust under air at room temperature. The isotope labeling NMR experiments and theoretical calculations reveal the reaction mechanism. Employing these reactions, functionalized dπ-pπ conjugated systems can be easily constructed and modified. The resulting dπ-pπ conjugated systems were found to be good electron transport layer materials in organic solar cells, with power conversion efficiency up to 16.28% based on the PM6: Y6 non-fullerene system. This work provides a facile, efficient methodology for the preparation of dπ-pπ conjugated systems for use in functional materials.
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Affiliation(s)
- Shiyan Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China
| | - Longzhu Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, 518055, Shenzhen, China
| | - Xiang Gao
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China
| | - Yuhui Hua
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China
| | - Lixia Peng
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China
| | - Ying Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China
| | - Liulin Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China
| | - Yuanzhi Tan
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China
| | - Feng He
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, 518055, Shenzhen, China.
| | - Haiping Xia
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China.
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, 518055, Shenzhen, China.
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10
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Hackl L, Petrov AR, Bannenberg T, Freytag M, Jones PG, Tamm M. Dimerisation of Dipiperidinoacetylene: Convenient Access to Tetraamino-1,3-Cyclobutadiene and Tetraamino-1,2-Cyclobutadiene Metal Complexes. Chemistry 2019; 25:16148-16155. [PMID: 31625641 PMCID: PMC6973143 DOI: 10.1002/chem.201904726] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Indexed: 01/24/2023]
Abstract
The reaction of 1,2-dipiperidinoacetylene (1) with 0.5 equivalents of SnCl2 or GeCl2 ⋅dioxane afforded the 1,2,3,4-tetrapiperidino-1,3-cyclobutadiene tin and germanium dichloride complexes 2 a and 2 b, respectively. A competing redox reaction was observed with excess amounts of SnCl2 , which produced a tetrapiperidinocyclobutadiene dication with two trichlorostannate(II) counterions. Heating neat 1 to 110 °C for 16 h cleanly produced the dimer 1,3,4,4-tetrapiperidino-3-buten-1-yne (3); its reaction with stoichiometric amounts of SnCl2 or GeCl2 ⋅dioxane furnished the 1,3,4,4-tetrapiperidino-1,2-cyclobutadiene tin and germanium dichloride complexes 4 a and 4 b, respectively. Transition-metal complexes containing this novel four-membered cyclic bent allene (CBA) ligand were prepared by reaction of 3 with [(tht)AuCl], [RhCl(CO)2 ]2 , and [(Me3 N)W(CO)5 ] to form [(CBA)AuCl] (5), [(CBA)RhCl(CO)2 ] (6), and [(CBA)W(CO)5 ] (7). The molecular structures of all compounds 2-7 were determined by X-ray diffraction analyses, and density functional theory (DFT) calculations were carried out to rationalise the formation of 3 and 4 a.
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Affiliation(s)
- Ludwig Hackl
- Institut für Anorganische und Analytische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
| | - Alex R. Petrov
- Institut für Anorganische und Analytische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
| | - Thomas Bannenberg
- Institut für Anorganische und Analytische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
| | - Matthias Freytag
- Institut für Anorganische und Analytische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
| | - Peter G. Jones
- Institut für Anorganische und Analytische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
| | - Matthias Tamm
- Institut für Anorganische und Analytische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
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11
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Ehrhorn H, Bockfeld D, Freytag M, Bannenberg T, Kefalidis CE, Maron L, Tamm M. Studies on Molybdena- and Tungstenacyclobutadiene Complexes Supported by Fluoroalkoxy Ligands as Intermediates of Alkyne Metathesis. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00068] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Henrike Ehrhorn
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Dirk Bockfeld
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Matthias Freytag
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Thomas Bannenberg
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Christos E. Kefalidis
- Institut National des Sciences Appliquées, Université de Toulouse, CNRS, INSA, UPS, 135 Avenue de Rangueil, 31077 Toulouse, France
| | - Laurent Maron
- Institut National des Sciences Appliquées, Université de Toulouse, CNRS, INSA, UPS, 135 Avenue de Rangueil, 31077 Toulouse, France
| | - Matthias Tamm
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
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12
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Ehrhorn H, Tamm M. Well-Defined Alkyne Metathesis Catalysts: Developments and Recent Applications. Chemistry 2018; 25:3190-3208. [PMID: 30346054 DOI: 10.1002/chem.201804511] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Indexed: 12/31/2022]
Abstract
Although alkyne metathesis has been known for 50 years, rapid progress in this field has mostly occurred during the last two decades. In this article, the development of several highly efficient and thoroughly studied alkyne metathesis catalysts is reviewed, which includes novel well-defined, in situ formed and heterogeneous systems. Various alkyne metathesis methodologies, including alkyne cross-metathesis (ACM), ring-closing alkyne metathesis (RCAM), cyclooligomerization, acyclic diyne metathesis polymerization (ADIMET), and ring-opening alkyne metathesis polymerization (ROAMP), are presented, and their application in natural product synthesis, materials science as well as supramolecular and polymer chemistry is discussed. Recent progress in the metathesis of diynes is also summarized, which gave rise to new methods such as ring-closing diyne metathesis (RCDM) and diyne cross-metathesis (DYCM).
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Affiliation(s)
- Henrike Ehrhorn
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany
| | - Matthias Tamm
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany
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13
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Àrias Ò, Ehrhorn H, Härdter J, Jones PG, Tamm M. Synthesis of Ether-Functionalized and Sterically Demanding Molybdenum Alkylidyne Complexes. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00783] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Òscar Àrias
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
| | - Henrike Ehrhorn
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
| | - Johanna Härdter
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
| | - Peter G. Jones
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
| | - Matthias Tamm
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
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14
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2017. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.08.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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Roland CD, VenkatRamani S, Jakhar VK, Ghiviriga I, Abboud KA, Veige AS. Synthesis and Characterization of a Molybdenum Alkylidyne Supported by a Trianionic OCO3– Pincer Ligand. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00677] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christopher D. Roland
- Center for Catalysis, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Sudarsan VenkatRamani
- Center for Catalysis, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Vineet K. Jakhar
- Center for Catalysis, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Ion Ghiviriga
- Center for Catalysis, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Khalil A. Abboud
- Center for Catalysis, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Adam S. Veige
- Center for Catalysis, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
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16
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Kitamura R, Suzuki K, Yamashita M. Dimerization of boryl- and amino-substituted acetylenes by B 2C 2 four-membered ring formation. Chem Commun (Camb) 2018; 54:5819-5822. [PMID: 29694479 DOI: 10.1039/c8cc02122h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Boryl- and amino-substituted acetylenes bearing diphenylboryl or 9-borabicyclononyl groups were synthesized. X-ray diffraction analyses revealed the dimerized structures of these acetylenes via the formation of B2C2 four-membered rings. Spectroscopic studies and DFT calculations indicated that these dimers can dissociate to afford monomeric acetylenes, and that the equilibrium constant for the dissociation depends on the structure of the boryl substituents.
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Affiliation(s)
- Ryo Kitamura
- Department of Applied Chemistry, Graduate School of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
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17
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Cui M, Lin R, Jia G. Chemistry of Metallacyclobutadienes. Chem Asian J 2018; 13:895-912. [DOI: 10.1002/asia.201701814] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 02/03/2018] [Indexed: 01/21/2023]
Affiliation(s)
- Mingxu Cui
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon, Hong Kong China
| | - Ran Lin
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University; Fuzhou Fujian China
| | - Guochen Jia
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon, Hong Kong China
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18
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Bai W, Wei W, Sung HHY, Williams ID, Lin Z, Jia G. Syntheses of Re(V) Alkylidyne Complexes and Ligand Effect on the Reactivity of Re(V) Alkylidyne Complexes toward Alkynes. Organometallics 2018. [DOI: 10.1021/acs.organomet.7b00877] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Wei Bai
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Wei Wei
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Herman H. Y. Sung
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ian D. Williams
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Guochen Jia
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
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19
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Jeong H, von Kugelgen S, Bellone D, Fischer FR. Regioselective Termination Reagents for Ring-Opening Alkyne Metathesis Polymerization. J Am Chem Soc 2017; 139:15509-15514. [DOI: 10.1021/jacs.7b09390] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hyangsoo Jeong
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Stephen von Kugelgen
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Donatela Bellone
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Felix R. Fischer
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
- Materials
Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Kavli Energy NanoSciences
Institute at the University of California Berkeley and the Lawrence
Berkeley National Laboratory, Berkeley, California 94720, United States
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20
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Bittner C, Ehrhorn H, Bockfeld D, Brandhorst K, Tamm M. Tuning the Catalytic Alkyne Metathesis Activity of Molybdenum and Tungsten 2,4,6-Trimethylbenzylidyne Complexes with Fluoroalkoxide Ligands OC(CF3)nMe3–n (n = 0–3). Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00519] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Celine Bittner
- Institut für Anorganische
und Analytische Chemie, Technische Universität Braunschweig, Hagenring
30, 38106 Braunschweig, Germany
| | - Henrike Ehrhorn
- Institut für Anorganische
und Analytische Chemie, Technische Universität Braunschweig, Hagenring
30, 38106 Braunschweig, Germany
| | - Dirk Bockfeld
- Institut für Anorganische
und Analytische Chemie, Technische Universität Braunschweig, Hagenring
30, 38106 Braunschweig, Germany
| | - Kai Brandhorst
- Institut für Anorganische
und Analytische Chemie, Technische Universität Braunschweig, Hagenring
30, 38106 Braunschweig, Germany
| | - Matthias Tamm
- Institut für Anorganische
und Analytische Chemie, Technische Universität Braunschweig, Hagenring
30, 38106 Braunschweig, Germany
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21
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Böhnke J, Braunschweig H, Deißenberger A, Dellermann T, Dewhurst RD, Jiménez-Halla JOC, Kachel S, Kelch H, Prieschl D. Alkylideneborate zwitterions and C–C coupling by atypical diboration of electron-rich alkynes. Chem Commun (Camb) 2017; 53:12132-12135. [DOI: 10.1039/c7cc07409c] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The combination of electron-rich diaminoalkynes and ditopic Lewis acids diboranes(4) leads to unusual diboration reactions involving internal Lewis adduct and zwitterion formation and C–C bond formation.
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Affiliation(s)
- Julian Böhnke
- Institute for Inorganic Chemistry
- Julius-Maximilians-Universität Würzburg
- Am Hubland
- Germany
- Institute for Sustainable Chemistry & Catalysis with Boron
| | - Holger Braunschweig
- Institute for Inorganic Chemistry
- Julius-Maximilians-Universität Würzburg
- Am Hubland
- Germany
- Institute for Sustainable Chemistry & Catalysis with Boron
| | - Andrea Deißenberger
- Institute for Inorganic Chemistry
- Julius-Maximilians-Universität Würzburg
- Am Hubland
- Germany
- Institute for Sustainable Chemistry & Catalysis with Boron
| | - Theresa Dellermann
- Institute for Inorganic Chemistry
- Julius-Maximilians-Universität Würzburg
- Am Hubland
- Germany
- Institute for Sustainable Chemistry & Catalysis with Boron
| | - Rian D. Dewhurst
- Institute for Inorganic Chemistry
- Julius-Maximilians-Universität Würzburg
- Am Hubland
- Germany
- Institute for Sustainable Chemistry & Catalysis with Boron
| | | | - Stephanie Kachel
- Institute for Inorganic Chemistry
- Julius-Maximilians-Universität Würzburg
- Am Hubland
- Germany
- Institute for Sustainable Chemistry & Catalysis with Boron
| | - Hauke Kelch
- Institute for Inorganic Chemistry
- Julius-Maximilians-Universität Würzburg
- Am Hubland
- Germany
- Institute for Sustainable Chemistry & Catalysis with Boron
| | - Dominic Prieschl
- Institute for Inorganic Chemistry
- Julius-Maximilians-Universität Würzburg
- Am Hubland
- Germany
- Institute for Sustainable Chemistry & Catalysis with Boron
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