1
|
Senthil S, Fehn D, Gau MR, Bacon AM, Carroll PJ, Meyer K, Mindiola DJ. A Vanadium Methylidene. J Am Chem Soc 2024; 146:15666-15671. [PMID: 38830196 DOI: 10.1021/jacs.4c01906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Examples of stable 3d transition metal methylidene complexes are extremely rare. Here we report an isolable and stable vanadium methylidene complex, [(PNP)V(=NAr)(=CH2)] (PNP = N[2-PiPr2-4-methylphenyl]-, Ar = 2,6-iPr2C6H3), via H atom transfer (HAT) from [(PNP)V(NHAr)(CH3)] or [(PNP)V(=NAr)(CH3)] using two or one equivalents of the TEMPO radical (TEMPO = (2,2,6,6-tetramethylpiperidin-1-yl)oxyl), respectively. Alternatively, the vanadium methylidene moiety can also be formed via the treatment of transient [(PNP)V=NAr] with the Wittig reagent, H2CPPh3. Structural and spectroscopic analysis, including 13C enriched labeling of the methylidene ligand, unequivocally confirmed the terminal nature of a rare 3d methylidene complex, featuring a V=CH2 bond distance of 1.908(2) Å and a highly downfield 13C NMR spectral shift at 298 ppm. In the absence of the ylide, intermediate [(PNP)V=NAr] activates dinitrogen to form an end-on bridging N2 complex, [(PNP)V(=NAr)]2(μ2-η1:η1-N2), having a singlet ground state. Complex [(PNP)V(=NAr)(=CH2)] reacts with H3COTf to form [(PNP)V(=NAr)(OTf)], accompanied by the release of ethylene as evidenced by 1H NMR spectroscopy, and reactivity studies suggest a β-hydride elimination pathway.
Collapse
Affiliation(s)
- Shuruthi Senthil
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Dominik Fehn
- Department of Chemistry & Pharmacy, Inorganic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen, Germany
| | - Michael R Gau
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Alexandra M Bacon
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Patrick J Carroll
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Karsten Meyer
- Department of Chemistry & Pharmacy, Inorganic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen, Germany
| | - Daniel J Mindiola
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| |
Collapse
|
2
|
Chatchaipaiboon K, Nomura K. (Arylimido)niobium(V)–Alkylidenes as the Catalysts for Ring-Opening Metathesis Polymerization (ROMP) of Cyclic Olefins: Z-Specific ROMP of Cyclooctene by Nb(CHSiMe 3)(NC 6H 5)[OC(CF 3) 3](PMe 3) 2. Organometallics 2023. [DOI: 10.1021/acs.organomet.2c00665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Affiliation(s)
- Kanchana Chatchaipaiboon
- Department of Chemistry, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioji, Tokyo 192-0927, Japan
| | - Kotohiro Nomura
- Department of Chemistry, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioji, Tokyo 192-0927, Japan
| |
Collapse
|
3
|
Nomura K, Mekcham S. Organometallic complexes of vanadium and their reactions. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2023. [DOI: 10.1016/bs.adomc.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
4
|
Belov DS, Acosta CM, Garcia-Molina M, Rue KL, Solans-Monfort X, Bukhryakov KV. Synthesis and Activity of Vanadium Oxo NHC Alkylidenes. Remarkable Preference for Degenerate Metathesis and Application for Carbon Isotope Exchange. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Dmitry S. Belov
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Carlos M. Acosta
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Miquel Garcia-Molina
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Kelly L. Rue
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | | | - Konstantin V. Bukhryakov
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| |
Collapse
|
5
|
George GM, Wolczanski PT, Cundari TR, MacMillan SN. Reactivity of 1.1.1-Propellane with (silox) 3M (M = Ti, V, Cr): Structures of (silox) 3V═( cC 4H 4)═CH 2 and [(silox) 3Cr–(1.1.1-C 5H 6)−] 2. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gregory M. George
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University Ithaca, New York 14853, United States
| | - Peter T. Wolczanski
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University Ithaca, New York 14853, United States
| | - Thomas R. Cundari
- Department of Chemistry, CasCam University of North Texas Denton, Texas 76201, United States
| | - Samantha N. MacMillan
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University Ithaca, New York 14853, United States
| |
Collapse
|
6
|
Horrer G, Krummenacher I, Mann S, Braunschweig H, Radius U. N-Heterocyclic carbene and cyclic (alkyl)(amino)carbene complexes of vanadium(III) and vanadium(V). Dalton Trans 2022; 51:11054-11071. [PMID: 35796195 DOI: 10.1039/d2dt01250b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
[VCl3(THF)3] offers a convenient entrance point into the chemistry of carbene stabilized V(III) complexes. Herein we report the paramagnetic mono- and biscarbene complexes [VCl3(cAACMe)] 1, [VCl3(cAACMe)(THF)] 1(thf), [VCl3(IMes)] 2, [{VCl2(IiPrMe)(μ-Cl)}2] 3, [VCl3(IDipp)] 4, [VCl3(SIDipp)] 5, [VCl3(SIDipp)(THF)] 5(thf), [VCl3(ItBu)] 6, [VCl3(cAACMe)2] 7 and [VCl3(IiPrMe)2] 8. Reaction of 1 with MesMgCl, MesLi and LiNPh2 afforded the complexes [VCl2(Mes)(cAACMe)] 9, [cAACMeH]+[VCl2Mes2]-10 and [VCl2(NPh2)(cAACMe)] 11. The V(V) complexes [V(O)Cl3(IDipp)] 12 and [V(O)Cl3(SIDipp)] 13 were selectively prepared from oxygen oxidation of 4 and 5. [V(O)Cl3(IDipp)] 12 and [V(O)Cl3(IMes)] react with isocyanates to yield the NHC-ligated imido complexes [V(N-p-CH3C6H4)Cl3(IDipp)] 14, [V(N-p-FC6H4)Cl3(IDipp)] 15, [V(N-p-CH3C6H4)Cl3(SIDipp)] 16, [V(N-p-FC6H4)Cl3(SIDipp)] 17, [V(N-p-CH3C6H4)Cl3(IMes)] 18 and [V(N-p-FC6H4)Cl3(IMes)] 19.
Collapse
Affiliation(s)
- Günther Horrer
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Ivo Krummenacher
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany. .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Sophie Mann
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Holger Braunschweig
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany. .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Udo Radius
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| |
Collapse
|
7
|
Quach PK, Hsu JH, Keresztes I, Fors BP, Lambert TH. Metal-Free Ring-Opening Metathesis Polymerization with Hydrazonium Initiators. Angew Chem Int Ed Engl 2022; 61:e202203344. [PMID: 35302707 DOI: 10.1002/anie.202203344] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Indexed: 12/13/2022]
Abstract
The ring-opening metathesis polymerization (ROMP) of cyclopropenes using hydrazonium initiators is described. The initiators, which are formed by the condensation of 2,3-diazabicyclo[2.2.2]octane and an aldehyde, polymerize cyclopropene monomers by a sequence of [3+2] cycloaddition and cycloreversion reactions. This process generates short chain polyolefins (Mn ≤9.4 kg mol-1 ) with relatively low dispersities (Đ≤1.4). The optimized conditions showed efficiency comparable to that achieved with Grubbs' 2nd generation catalyst for the polymerization of 3-methyl-3-phenylcyclopropene. A positive correlation between monomer to initiator ratio and degree of polymerization was revealed through NMR spectroscopy.
Collapse
Affiliation(s)
- Phong K Quach
- Department of Chemistry and Chemical Biology, Cornell University, 122 Baker Laboratory, Ithaca, NY 14853, USA
| | - Jesse H Hsu
- Department of Chemistry and Chemical Biology, Cornell University, 122 Baker Laboratory, Ithaca, NY 14853, USA
| | - Ivan Keresztes
- Department of Chemistry and Chemical Biology, Cornell University, 122 Baker Laboratory, Ithaca, NY 14853, USA
| | - Brett P Fors
- Department of Chemistry and Chemical Biology, Cornell University, 122 Baker Laboratory, Ithaca, NY 14853, USA
| | - Tristan H Lambert
- Department of Chemistry and Chemical Biology, Cornell University, 122 Baker Laboratory, Ithaca, NY 14853, USA
| |
Collapse
|
8
|
Sousa-Silva A, Paredes-Gil K, de Matos JME, Sá É. Singlet Spin State Drives [V]-Carbene To Catalyze Olefin Metathesis: A Computational Analysis. Organometallics 2022. [DOI: 10.1021/acs.organomet.1c00699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Adenilson Sousa-Silva
- Departamento de Química, Universidade Federal do Piauí, Teresina, PI 64049-505, Brazil
- Laboratório de Química Teórica, Universidade Federal do Piauí, Teresina, PI 64049-505, Brazil
| | - Katherine Paredes-Gil
- Departamento de Química, Facultad de Ciencias Naturales, Matemática y del Medio Ambiente, Universidad Tecnológica Metropolitana, Santiago 8940577, Chile
- Programa Institucional de Fomento a la Investigación, Desarrollo e Innovación (PIDi), Universidad Tecnológica Metropolitana, Santiago 8940577, Chile
| | | | - Égil Sá
- Laboratório de Química Teórica, Universidade Federal do Piauí, Teresina, PI 64049-505, Brazil
- Universidade Federal do Delta do Parnaíba, Parnaíba, PI 64202-020, Brazil
| |
Collapse
|
9
|
Zhang L, Chen P, Bai S. Decarboxylative alkylarylation of alkenes with PhI(O2CR)2 to access benzimidazo[2,1-a]isoquinolin-6(5H)-ones catalyzed by a low-valent divanadium complex. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
10
|
Quach PK, Hsu JH, Keresztes I, Fors BP, Lambert TH. Metal–Free Ring–Opening Metathesis Polymerization with Hydrazonium Initiators. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Phong K Quach
- Cornell University Chemistry and Chemical Biology 14853 Ithaca UNITED STATES
| | - Jesse H Hsu
- Cornell University Chemistry and Chemical Biology 14853 Ithaca UNITED STATES
| | - Ivan Keresztes
- Cornell University Chemistry and Chemical Biology 14853 Ithaca UNITED STATES
| | - Brett P Fors
- Cornell University Chemistry and Chemical Biology 14853 Ithaca UNITED STATES
| | - Tristan Hayes Lambert
- Cornell University Department of Chemistry & Chemical Biology Baker Laboratory 14853 Ithaca UNITED STATES
| |
Collapse
|
11
|
Tejeda G, Belov DS, Fenoll DA, Rue KL, Tsay C, Solans-Monfort X, Bukhryakov KV. Vanadium Imido NHC Complexes for Ring-Closing Olefin Metathesis Reactions. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00013] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Gabriela Tejeda
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Dmitry S. Belov
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Didac A. Fenoll
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Kelly L. Rue
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Charlene Tsay
- Department of Chemistry, University of California, Riverside, California 92591, United States
| | | | - Konstantin V. Bukhryakov
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| |
Collapse
|
12
|
George GM, Wolczanski PT, MacMillan SN. Attempts at Generating Metathesis-Active Fe(IV) and Co(IV) Complexes via the Reactions of (silox)2M(THF)2, [(silox)3M][Na(THF)2] (M = Fe, Co), and Related Species with Propellanes and Triphenylboron. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
13
|
Belov DS, Fenoll DA, Chakraborty I, Solans-Monfort X, Bukhryakov KV. Synthesis of Vanadium Oxo Alkylidene Complex and Its Reactivity in Ring-Closing Olefin Metathesis Reactions. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00425] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dmitry S. Belov
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Didac A. Fenoll
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Indranil Chakraborty
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | | | - Konstantin V. Bukhryakov
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| |
Collapse
|
14
|
Kawamoto Y, Elser I, Buchmeiser MR, Nomura K. Vanadium(V) Arylimido Alkylidene N-Heterocyclic Carbene Alkyl and Perhalophenoxy Alkylidenes for the Cis, Syndiospecific Ring Opening Metathesis Polymerization of Norbornene. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00271] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuta Kawamoto
- Department of Chemistry, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioji, Tokyo 192-0927, Japan
| | - Iris Elser
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Michael R. Buchmeiser
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
- German Institutes of Textile and Fiber Research (DITF) Denkendorf, Körschtalstr. 26, D-73770 Denkendorf, Germany
| | - Kotohiro Nomura
- Department of Chemistry, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioji, Tokyo 192-0927, Japan
| |
Collapse
|
15
|
Qian J, Comito RJ. A Robust Vanadium(V) Tris(2-pyridyl)borate Catalyst for Long-Lived High-Temperature Ethylene Polymerization. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00334] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jin Qian
- Department of Chemistry, University of Houston, 3585 Cullen Boulevard, Room 112, Houston, Texas 77204-5003, United States
| | - Robert J. Comito
- Department of Chemistry, University of Houston, 3585 Cullen Boulevard, Room 112, Houston, Texas 77204-5003, United States
| |
Collapse
|
16
|
Belov DS, Tejeda G, Bukhryakov KV. Olefin Metathesis by First-Row Transition Metals. Chempluschem 2021; 86:924-937. [PMID: 34160903 DOI: 10.1002/cplu.202100192] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/07/2021] [Indexed: 11/06/2022]
Abstract
Catalytic olefin metathesis based on the second- and third-row transition metals has become one of the most powerful transformations in modern organic chemistry. The shift to first-row metals to produce fine and commodity chemicals would be an important achievement to complement existing methods with inexpensive and greener alternatives. In addition, those systems can offer unusual reactivity based on the unique electronic structure of the base metals. In this Minireview, we summarize the progress of the development of alkylidenes and metallacycles of first-row transition metals from scandium to nickel capable of performing cycloaddition and cycloreversion steps, crucial reactions in olefin metathesis. In addition, we will discuss systems capable of performing olefin metathesis; however, the nature of active species is not yet known.
Collapse
Affiliation(s)
- Dmitry S Belov
- Chemistry and Biochemistry, Florida International University, 11200 SW 8th St., Miami, FL, 33199, USA
| | - Gabriela Tejeda
- Chemistry and Biochemistry, Florida International University, 11200 SW 8th St., Miami, FL, 33199, USA
| | - Konstantin V Bukhryakov
- Chemistry and Biochemistry, Florida International University, 11200 SW 8th St., Miami, FL, 33199, USA
| |
Collapse
|
17
|
Zhang L, Zhou H, Bai S, Li S. A benzene-bridged divanadium complex-early transition metal catalyst for alkene alkylarylation with PhI(O 2CR) 2via decarboxylation. Dalton Trans 2021; 50:3201-3206. [PMID: 33576352 DOI: 10.1039/d0dt04295a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis, structure and catalytic activity of a benzene-bridged divanadium complex were comprehensively studied. The reduction of (Nacnac)VCl2 (1) (Nacnac = (2,6-iPr2C6H3NCMe)2HC) supported by β-diketiminate with potassium graphite (KC8) by employing benzene as the solvent allows access to the benzene-bridged inverted-sandwich divanadium complex (μ-η6:η6-C6H6)[V(Nacnac)]2 (2a), which can catalyze alkene alkylarylation with hypervalent iodine(iii) reagents (HIRs) via decarboxylation to generate regioselectively diverse indolinones. Furthermore, the mild nature of this reaction was amenable to a wide range of functionalities on alkenes and HIRs. Mechanistic studies revealed a relay sequence of decarboxylative radical alkylation/radical arylation/oxidative re-aromatization.
Collapse
Affiliation(s)
- Lei Zhang
- Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China.
| | - Hongfei Zhou
- Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China.
| | - Shaokun Bai
- Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China.
| | - Shaodan Li
- College of Resources and Environment Science, Hebei Normal University, Shijiazhuang 050024, China.
| |
Collapse
|
18
|
Belov DS, Tejeda G, Tsay C, Bukhryakov KV. Ring‐Closing Olefin Metathesis Catalyzed by Well‐Defined Vanadium Alkylidene Complexes. Chemistry 2021; 27:4578-4582. [DOI: 10.1002/chem.202005438] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Indexed: 02/03/2023]
Affiliation(s)
- Dmitry S. Belov
- Department of Chemistry and Biochemistry Florida International University 11200 SW 8th St. Miami FL 33199 USA
| | - Gabriela Tejeda
- Department of Chemistry and Biochemistry Florida International University 11200 SW 8th St. Miami FL 33199 USA
| | - Charlene Tsay
- Department of Chemistry University of California Riverside CA 92521 USA
| | - Konstantin V. Bukhryakov
- Department of Chemistry and Biochemistry Florida International University 11200 SW 8th St. Miami FL 33199 USA
| |
Collapse
|
19
|
Affiliation(s)
- Wesley S. Farrell
- Chemistry Department United States Naval Academy 572 M Holloway Rd. Annapolis MD 21402 USA
| |
Collapse
|
20
|
Dawood KM, Nomura K. Recent Developments in Z‐Selective Olefin Metathesis Reactions by Molybdenum, Tungsten, Ruthenium, and Vanadium Catalysts. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001117] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kamal M. Dawood
- Department of Chemistry Faculty of Science Cairo University Giza 12613 Egypt Tel. & Fax
| | - Kotohiro Nomura
- Department of Chemistry Faculty of Science Tokyo Metropolitan University, Hachioji Tokyo 192-0397 Japan
| |
Collapse
|
21
|
Ishikura H, Neven R, Lange T, Galetová A, Blom B, Romano D. Developments in vanadium-catalysed polymerisation reactions: A review. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
22
|
Belov DS, Mathivathanan L, Beazley MJ, Martin WB, Bukhryakov KV. Stereospecific Ring‐Opening Metathesis Polymerization of Norbornene Catalyzed by Iron Complexes. Angew Chem Int Ed Engl 2020; 60:2934-2938. [DOI: 10.1002/anie.202011150] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 10/27/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Dmitry S. Belov
- Department of Chemistry and Biochemistry Florida International University 11200 SW 8th St. Miami FL 33199 USA
| | - Logesh Mathivathanan
- Department of Chemistry and Biochemistry Florida International University 11200 SW 8th St. Miami FL 33199 USA
| | - Melanie J. Beazley
- Department of Chemistry University of Central Florida 4111 Libra Dr. Orlando FL 32816 USA
| | - William Blake Martin
- Department of Macromolecular Science and Engineering Case Western Reserve University 2100 Adelbert Road Cleveland OH 44106 USA
| | - Konstantin V. Bukhryakov
- Department of Chemistry and Biochemistry Florida International University 11200 SW 8th St. Miami FL 33199 USA
| |
Collapse
|
23
|
Belov DS, Mathivathanan L, Beazley MJ, Martin WB, Bukhryakov KV. Stereospecific Ring‐Opening Metathesis Polymerization of Norbornene Catalyzed by Iron Complexes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011150] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Dmitry S. Belov
- Department of Chemistry and Biochemistry Florida International University 11200 SW 8th St. Miami FL 33199 USA
| | - Logesh Mathivathanan
- Department of Chemistry and Biochemistry Florida International University 11200 SW 8th St. Miami FL 33199 USA
| | - Melanie J. Beazley
- Department of Chemistry University of Central Florida 4111 Libra Dr. Orlando FL 32816 USA
| | - William Blake Martin
- Department of Macromolecular Science and Engineering Case Western Reserve University 2100 Adelbert Road Cleveland OH 44106 USA
| | - Konstantin V. Bukhryakov
- Department of Chemistry and Biochemistry Florida International University 11200 SW 8th St. Miami FL 33199 USA
| |
Collapse
|
24
|
Farrell WS, Greene C, Ghosh P, Warren TH, Zavalij PY. Decomposition of Vanadium(V) Alkylidenes Relevant to Olefin Metathesis. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00610] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wesley S. Farrell
- Chemistry Department, United States Naval Academy, 572M Holloway Road, Annapolis, Maryland 21402, United States
| | - Christine Greene
- Department of Chemistry, Georgetown University, Box 571227-1227, Washington, D.C. 20057, United States
| | - Pokhraj Ghosh
- Department of Chemistry, Georgetown University, Box 571227-1227, Washington, D.C. 20057, United States
| | - Timothy H. Warren
- Department of Chemistry, Georgetown University, Box 571227-1227, Washington, D.C. 20057, United States
| | - Peter Y. Zavalij
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| |
Collapse
|
25
|
Musso JV, Benedikter MJ, Wang D, Frey W, Altmann HJ, Buchmeiser MR. Reversible N-Heterocyclic Carbene-Induced α-H Abstraction in Tungsten(VI) Imido Dialkyl Dialkoxide Complexes. Chemistry 2020; 26:8709-8713. [PMID: 32202338 PMCID: PMC7496809 DOI: 10.1002/chem.202000840] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Indexed: 01/19/2023]
Abstract
The first reversible N‐heterocyclic carbene (NHC) induced α‐H abstraction in tungsten(VI) imido‐dialkyl dialkoxide complexes is reported. Treatment of W(NAr)(CH2Ph)2(OtBu)2 (Ar=2,6‐dichlorophenyl, 2,6‐dimethylphenyl, 2,6‐diisopropylphenyl) with different NHCs leads to the formation of complexes of the type W(NAr)(CHPh)(NHC)(CH2Ph)(OtBu) in excellent isolated yields of up to 96 %. The highly unusual release of the tert‐butoxide ligand as tBuOH in the course of the reaction was observed. The formed alkylidene complexes and tBuOH are in an equilibrium with the NHC and the dialkyl complexes. Reaction kinetics were monitored by 1H NMR spectroscopy. A correlation between the steric and electronic properties of the NHC and the reaction rates was observed. Kinetics of a deuterium‐labeled complex in comparison to its non‐deuterated counterpart revealed the presence of a strong primary kinetic isotope effect (KIE) of 4.2, indicating that α‐H abstraction is the rate‐determining step (RDS) of the reaction.
Collapse
Affiliation(s)
- Janis V Musso
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Mathis J Benedikter
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Dongren Wang
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Wolfgang Frey
- Institute of Organic Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Hagen J Altmann
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Michael R Buchmeiser
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany.,German Institutes of Textile and Fiber Research (DITF) Denkendorf, Körschtalstr. 26, 73770, Denkendorf, Germany
| |
Collapse
|
26
|
Izawa I, Nomura K. (Arylimido)niobium(V)–Alkylidenes, Nb(CHSiMe 3)(NAr)[OC(CF 3) 3](PMe 3) 2, That Enable to Proceed Living Metathesis Polymerization of Internal Alkynes. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00874] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Itsuki Izawa
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Kotohiro Nomura
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioji, Tokyo 192-0397, Japan
| |
Collapse
|
27
|
Nomura K, Chaimongkolkunasin S. cis-Specific ring opening metathesis polymerisation (ROMP) of cyclic olefins using (pentafluorophenylimido)vanadium(v)-alkylidene, V(CHSiMe3)(NC6F5)[OC(CF3)3](PMe3)2. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00938e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Highly cis-specific (Z selective) ring opening metathesis polymerisation of cycloheptene has been demonstrated using V(CHSiMe3)(NC6F5)[OC(CF3)3](PMe3)2.
Collapse
Affiliation(s)
- Kotohiro Nomura
- Department of Chemistry
- Tokyo Metropolitan University
- Tokyo 192-0397
- Japan
| | | |
Collapse
|
28
|
Federmann P, Richter T, Wadepohl H, Ballmann J. Synthesis and Reactivity of [PCCP]-Coordinated Group 5 Alkyl and Alkylidene Complexes Featuring a Metallacyclopropene Backbone. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00577] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Patrick Federmann
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 276, D-69120 Heidelberg, Germany
| | - Tim Richter
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 276, D-69120 Heidelberg, Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 276, D-69120 Heidelberg, Germany
| | - Joachim Ballmann
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 276, D-69120 Heidelberg, Germany
| |
Collapse
|
29
|
Farrell WS. Vanadium-Catalyzed Cross Metathesis: Limitations and Implications for Future Catalyst Design. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00362] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Wesley S. Farrell
- Chemistry Department, United States Naval Academy, 572M Holloway Road, Annapolis, Maryland 21402, United States
| |
Collapse
|
30
|
(Arylimido)vanadium(V)-Alkylidene Complexes as Catalysts for Ring-opening Metathesis Polymerization (ROMP) of Cyclic Olefins: Ligand Design for Exhibiting the High Activity. CHINESE JOURNAL OF POLYMER SCIENCE 2019. [DOI: 10.1007/s10118-019-2298-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
31
|
Hayashibara H, Ngamnithiporn A, Nomura K. Reactions of (Arylimido)vanadium(V)-Trialkyl Complexes with Phenols: Effects of Arylimido Ligands and Phenols for Formation of the Vanadium Phenoxides. ACS OMEGA 2019; 4:5818-5828. [PMID: 31459733 PMCID: PMC6648231 DOI: 10.1021/acsomega.9b00531] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 03/14/2019] [Indexed: 06/10/2023]
Abstract
Reactions of a series of (arylimido)vanadium(V) trialkyl complexes, V(NAr')(CH2SiMe3)3 (Ar' = C6H5, 2-MeC6H4, 2,6-Me2C6H3, 2,6-Cl2C6H3), with various phenols (ArOH, Ar = 2,6-F2C6H3, 2,6-Cl2C6H3, 2,6-Me2C6H3, 2,6- i Pr2C6H3, 2- t BuC6H4, 2,6- t Bu2C6H3; 1.0 equiv) affording V(NAr')(CH2SiMe3)2(OAr) were conducted in C6D6 at 25 °C, and the effects of both arylimido ligands and phenols on the substitution rate were explored. Sterically hindered arylimido ligands showed lower reactivity, and the reaction proceeded in the order: Ar' = 2,6-Me2C6H3 < 2,6-Cl2C6H3 < 2-MeC6H4 < C6H5. This order is somewhat different from that obtained from the chemical shifts in V(NAr')(CH2SiMe3)3 in the 51V NMR spectra. The conversions with various disubstituted phenols increased in the order: 2,6- i Pr2C6H3OH < 2,6-Me2C6H3OH < 2,6-Cl2C6H3OH < 2,6-F2C6H3OH, irrespective of the kind of arylimido ligands. The reactions of V(NAr')(CH2SiMe3)3 with 2,6- t Bu2C6H3OH (1.0 or 3.0 equiv) did not take place even upon heating at 60 °C. These results suggest that the reactions proceed via coordination of ArOH toward vanadium, and the reactivity is highly dependent on steric bulk of both the arylimido ligand and the phenol.
Collapse
|
32
|
Kuboki M, Nomura K. (Arylimido)niobium(V) Complexes Containing 2-Pyridylmethylanilido Ligand as Catalyst Precursors for Ethylene Dimerization That Proceeds via Cationic Nb(V) Species. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masaharu Kuboki
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Kotohiro Nomura
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
| |
Collapse
|
33
|
Trinh TKH, Schrodj G, Rigolet S, Pinaud J, Lacroix-Desmazes P, Pichavant L, Héroguez V, Chemtob A. Combining a ligand photogenerator and a Ru precatalyst: a photoinduced approach to cross-linked ROMP polymer films. RSC Adv 2019; 9:27789-27799. [PMID: 35530455 PMCID: PMC9070792 DOI: 10.1039/c9ra05831a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Accepted: 08/21/2019] [Indexed: 01/26/2023] Open
Abstract
Although metathesis photoinduced catalysis is now well established, there is little development in thin film preparation using photochemically activated ring-opening metathesis polymerization (ROMP). Herein, a N-heterocyclic carbene (NHC) photogenerator (1,3-bis(mesityl)imidazolium tetraphenylborate) is combined with an inactive metathesis catalyst ([RuCl2(p-cymene)]2) to generate under UV irradiation an active catalyst (p-cymene)RuCl2 (NHC), that is capable of producing in a single step cross-linked copolymer films by ROMP of norbornene with dicyclopentadiene. The study shows that the photoinitiated catalytic system can be optimized by increasing the yield of photogenerated NHC through a sensitizer (2-isopropylthioxanthone), and by choosing [RuI2(p-cymene)]2 as precatalyst to provide a long-term photolatency. The cross-linked polymer structure is investigated by a range of techniques including gel content measurement, FT-IR and solid-state 13C NMR spectroscopy, TGA and DSC, which reveal a cross-linking mechanism proceeding through both metathesis and olefin coupling. Photoactivated ROMP is harnessed for the single-step formation of cross-linked polymer coatings based on norbornene and dicyclopentadiene.![]()
Collapse
Affiliation(s)
- Thi Kim Hoang Trinh
- Institut de Science des Matériaux de Mulhouse, IS2M
- UMR 7361 CNRS
- Université de Haute-Alsace
- Mulhouse
- France
| | - Gautier Schrodj
- Institut de Science des Matériaux de Mulhouse, IS2M
- UMR 7361 CNRS
- Université de Haute-Alsace
- Mulhouse
- France
| | - Séverinne Rigolet
- Institut de Science des Matériaux de Mulhouse, IS2M
- UMR 7361 CNRS
- Université de Haute-Alsace
- Mulhouse
- France
| | | | | | | | | | - Abraham Chemtob
- Institut de Science des Matériaux de Mulhouse, IS2M
- UMR 7361 CNRS
- Université de Haute-Alsace
- Mulhouse
- France
| |
Collapse
|
34
|
Flid VR, Gringolts ML, Shamsiev RS, Finkelshtein ES. Norbornene, norbornadiene and their derivatives: promising semi-products for organic synthesis and production of polymeric materials. RUSSIAN CHEMICAL REVIEWS 2018. [DOI: 10.1070/rcr4834] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The methods for synthesis of promising norbornene monomers from norbornadiene and quadricyclane are summarized. A strategy for their synthesis is discussed, combining theoretical and experimental approaches to the selection of catalysts and the conditions for carrying out stereoselective reactions. The mechanisms of catalytic reactions of synthesis of norbornene monomers, as well as the progress in the macromolecular design of functional polymeric materials based on them, are considered. The data on industrial processes of production of polynorbornenes and areas of their use are presented.
The bibliography includes 297 references.
Collapse
|
35
|
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]
|
36
|
NOMURA K, HAYASHIBARA H. (Imido)Vanadium Complex Catalysts for Efficient Ring-Opening Metathesis Polymerization of Cyclic Olefins. KOBUNSHI RONBUNSHU 2018. [DOI: 10.1295/koron.2018-0034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kotohiro NOMURA
- Department of Chemistry, Faculty of Science, Tokyo Metropolitan University
| | - Hitomi HAYASHIBARA
- Department of Chemistry, Faculty of Science, Tokyo Metropolitan University
| |
Collapse
|
37
|
Langeslay RR, Kaphan DM, Marshall CL, Stair PC, Sattelberger AP, Delferro M. Catalytic Applications of Vanadium: A Mechanistic Perspective. Chem Rev 2018; 119:2128-2191. [PMID: 30296048 DOI: 10.1021/acs.chemrev.8b00245] [Citation(s) in RCA: 203] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The chemistry of vanadium has seen remarkable activity in the past 50 years. In the present review, reactions catalyzed by homogeneous and supported vanadium complexes from 2008 to 2018 are summarized and discussed. Particular attention is given to mechanistic and kinetics studies of vanadium-catalyzed reactions including oxidations of alkanes, alkenes, arenes, alcohols, aldehydes, ketones, and sulfur species, as well as oxidative C-C and C-O bond cleavage, carbon-carbon bond formation, deoxydehydration, haloperoxidase, cyanation, hydrogenation, dehydrogenation, ring-opening metathesis polymerization, and oxo/imido heterometathesis. Additionally, insights into heterogeneous vanadium catalysis are provided when parallels can be drawn from the homogeneous literature.
Collapse
Affiliation(s)
- Ryan R Langeslay
- Chemical Sciences & Engineering Division , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - David M Kaphan
- Chemical Sciences & Engineering Division , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Christopher L Marshall
- Chemical Sciences & Engineering Division , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Peter C Stair
- Chemical Sciences & Engineering Division , Argonne National Laboratory , Argonne , Illinois 60439 , United States.,Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
| | - Alfred P Sattelberger
- Chemical Sciences & Engineering Division , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Massimiliano Delferro
- Chemical Sciences & Engineering Division , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| |
Collapse
|
38
|
Srisupap N, Wised K, Tsutsumi K, Nomura K. Synthesis of (Arylmido)niobium(V) Complexes Containing Ketimide, Phenoxide Ligands, and Some Reactions with Phenols and Alcohols. ACS OMEGA 2018; 3:6166-6181. [PMID: 31458800 PMCID: PMC6644436 DOI: 10.1021/acsomega.8b01065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Accepted: 05/28/2018] [Indexed: 06/10/2023]
Abstract
Reactions of Nb(NAr)(N=C t Bu2)3 (3a, Ar = 2,6-Me2C6H3) with 1.0, 2.0, or 3.0 equiv of Ar'OH (Ar' = 2,6- i Pr2C6H3) afforded Nb(NAr)(N=C t Bu2)2(OAr'), Nb(NAr)(N=C t Bu2)(OAr')2, or Nb(NAr)(OAr')3, respectively (at 25 °C), whereas the reaction with 2.0 equiv of 2,6- t Bu2C6H3OH afforded Nb(NAr)(N=C t Bu2)2(O-2,6- t Bu2C6H3) upon heating (70 °C) without the formation of bis(phenoxide) and the reaction of 3a with 2.0 equiv of 2,4,6-Me3C6H2OH afforded Nb(NAr)(N=C t Bu2)(O-2,4,6-Me3C6H2)2(HN=C t Bu2). Similar reactions of 3a with 1.0 equiv of (CF3)3COH or 2.0 equiv of (CF3)2CHOH afforded Nb(NAr)(N=C t Bu2)2[OC(CF3)3](HN=C t Bu2) or Nb(NAr)(N=C t Bu2)[OCH(CF3)2]2(HN=C t Bu2), respectively. On the basis of their structural analyses and the reaction chemistry, it was suggested that these reactions proceeded via coordination of phenol (alcohol) to Nb and the subsequent proton (hydrogen) transfer to the ketimide (N=C t Bu2) ligand. The reaction of Nb(NAr)(N=C t Bu2)2(OAr') with 1.0 equiv of 2,4,6-Me3C6H2OH gave the disproportionation products Nb(NAr)(N=C t Bu2)(OAr')2 and Nb(NAr)(N=C t Bu2)(O-2,4,6-Me3C6H2)2(HN=C t Bu2) with 1:1 ratio, clearly indicating the presence of the above mechanism and the fast equilibrium (between the ketimide and the phenoxide). The reaction of 3a with 1.0 or 2.0 equiv of C6F5OH afforded Nb(N=C t Bu2)2(OC6F5)3(HN=C t Bu2) as the sole isolated product, which was formed from once generated Nb(NAr)(N=C t Bu2)2(OC6F5)(HN=C t Bu2) by treating with C6F5OH.
Collapse
|
39
|
Chaimongkolkunasin S, Nomura K. (Arylimido)Vanadium(V)-Alkylidenes Containing Chlorinated Phenoxy Ligands: Thermally Robust, Highly Active Catalyst in Ring-Opening Metathesis Polymerization of Cyclic Olefins. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00231] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sapanna Chaimongkolkunasin
- Department of Chemistry, Faculty of Science, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Kotohiro Nomura
- Department of Chemistry, Faculty of Science, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioji, Tokyo 192-0397, Japan
| |
Collapse
|
40
|
de Brito Sá É, Rodríguez-Santiago L, Sodupe M, Solans-Monfort X. Influence of Ligands and Oxidation State on the Reactivity of Pentacoordinated Iron Carbenes with Olefins: Metathesis versus Cyclopropanation. Organometallics 2018. [DOI: 10.1021/acs.organomet.7b00786] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Égil de Brito Sá
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
- Universidade Federal do Piauí, Campus Ministro
Reis Velloso, 64202-020 Parnaíba-Piauí, Brazil
| | | | - Mariona Sodupe
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | | |
Collapse
|
41
|
Affiliation(s)
- Peng Liu
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Chunjin Ai
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
- Lanzhou Petrochemical Research Center, Petrochina, Lanzhou, 730060, China
| |
Collapse
|
42
|
de Brito Sá E, Rimola A, Rodríguez-Santiago L, Sodupe M, Solans-Monfort X. Reactivity of Metal Carbenes with Olefins: Theoretical Insights on the Carbene Electronic Structure and Cyclopropanation Reaction Mechanism. J Phys Chem A 2018; 122:1702-1712. [DOI: 10.1021/acs.jpca.7b11656] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- E. de Brito Sá
- Departament
de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
- Universidade Federal do Piauí, Campus Ministro Reis Velloso, 64202-020 Parnaíba, Piauí, Brazil
| | - A. Rimola
- Departament
de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | | | - M. Sodupe
- Departament
de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - X. Solans-Monfort
- Departament
de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| |
Collapse
|
43
|
Chen Y, Abdellatif MM, Nomura K. Olefin metathesis polymerization: Some recent developments in the precise polymerizations for synthesis of advanced materials (by ROMP, ADMET). Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.12.041] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
44
|
Hayashibara H, Hou X, Nomura K. Facile in situ generation of highly active (arylimido)vanadium(v)–alkylidene catalysts for the ring-opening metathesis polymerization (ROMP) of cyclic olefins by immediate phenoxy ligand exchange. Chem Commun (Camb) 2018; 54:13559-13562. [DOI: 10.1039/c8cc07974a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Remarkably active vanadium(v)–alkylidene catalysts for the ring-opening metathesis polymerization of cyclic olefins can be generated in situ upon addition of C6F5OH or C6Cl5OH.
Collapse
Affiliation(s)
| | - Xiaohua Hou
- Department of Chemistry, Tokyo Metropolitan University
- Hachioji
- Japan
| | - Kotohiro Nomura
- Department of Chemistry, Tokyo Metropolitan University
- Hachioji
- Japan
| |
Collapse
|
45
|
Yi J, Yang W, Sun WH, Nomura K, Hada M. Vanadium NMR Chemical Shifts of (Imido)vanadium(V) Dichloride Complexes with Imidazolin-2-iminato and Imidazolidin-2-iminato Ligands: Cooperation with Quantum-Chemical Calculations and Multiple Linear Regression Analyses. J Phys Chem A 2017; 121:9099-9105. [DOI: 10.1021/acs.jpca.7b08328] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jun Yi
- Department
of Chemistry, Tokyo Metropolitan University, Minami-Osawa 1-1, Hachioji, Tokyo 192-0397, Japan
| | - Wenhong Yang
- Laboratory
of Engineering Plastics and Beijing National Laboratory for Molecular
Science, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
| | - Wen-Hua Sun
- Laboratory
of Engineering Plastics and Beijing National Laboratory for Molecular
Science, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
| | - Kotohiro Nomura
- Department
of Chemistry, Tokyo Metropolitan University, Minami-Osawa 1-1, Hachioji, Tokyo 192-0397, Japan
| | - Masahiko Hada
- Department
of Chemistry, Tokyo Metropolitan University, Minami-Osawa 1-1, Hachioji, Tokyo 192-0397, Japan
| |
Collapse
|
46
|
A partially serendipitous discovery of thermo-switchable ruthenium olefin metathesis initiator that seem to be well suited for ROMP of monomers bearing vinyl pendant groups. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.04.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
47
|
Singhal A, Ahmad S, Chauhan SM. Iron(III) porphyrin catalyzed ionic liquid mediated polymerization of methylmethacrylate. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.4044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Anchal Singhal
- Department of ChemistryUniversity of Delhi Delhi 110 007 India
| | - Sohail Ahmad
- Department of ChemistryUniversity of Delhi Delhi 110 007 India
| | | |
Collapse
|
48
|
Moriuchi T, Sakuramoto T, Nishina M, Kawai R, Hirao T. Structural Characterization of (Arylimido)vanadium(V) Compounds with 2,6-Difluorophenoxide Ligand. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201700205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Toshiyuki Moriuchi
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; Yamada-oka, Suita 565-0871 Osaka Japan
| | - Takashi Sakuramoto
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; Yamada-oka, Suita 565-0871 Osaka Japan
| | - Masafumi Nishina
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; Yamada-oka, Suita 565-0871 Osaka Japan
| | - Ryota Kawai
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; Yamada-oka, Suita 565-0871 Osaka Japan
| | - Toshikazu Hirao
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; Yamada-oka, Suita 565-0871 Osaka Japan
| |
Collapse
|
49
|
Use of Vanadium Complexes Bearing Naphthalene-Bridged Nitrogen-Sulfonate Ligands as Catalysts for Copolymerization of Ethylene and Propylene. Polymers (Basel) 2017; 9:polym9080325. [PMID: 30971000 PMCID: PMC6418982 DOI: 10.3390/polym9080325] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2017] [Revised: 07/19/2017] [Accepted: 07/24/2017] [Indexed: 11/16/2022] Open
Abstract
Vanadium complexes bearing naphthalene-bridged nitrogen-sulfonate ligand ([ê2(N,O)-8-(PhN)-1-naphthalenesulfonato]VOCl (1a) and [ê2(N,O)-8-(PhN)-1-naphthalenesulfonato]VCl2 (1b)) were synthesized. Activated by ethylaluminium sesquichloride (EASC) and in the presence of ethyl trichloroacetate (ETCA) as reactivator, complexes 1a and 1b showed activities of up to 39.1 kg polymer (mol V)−1 h−1, affording the copolymers with high molecular weights (Mw up to 28 × 104) and narrow molecular weight distributions (Mw/Mn ~ 3.0) as well as high propylene incorporation of up to 49.4%. Compared to the traditional VOCl3 system, these complexes exhibited higher propylene incorporation ability and higher catalytic activities especially at high polymerization temperatures of 50 °C and above. Determined by DSC and 13C NMR, the copolymers obtained with 1a and 1b had more random structures than that with the VOCl3 system.
Collapse
|
50
|
Chaimongkolkunasin S, Hou X, Nomura K. Ring opening metathesis polymerization of norbornene and tetracyclododecene with cyclooctene by using (arylimido)vanadium(V)-alkylidene catalyst. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28622] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
| | - Xiaohua Hou
- Department of Chemistry; Tokyo Metropolitan University; Hachioji Tokyo 192-0397 Japan
| | - Kotohiro Nomura
- Department of Chemistry; Tokyo Metropolitan University; Hachioji Tokyo 192-0397 Japan
| |
Collapse
|