1
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Fan F, Peng Y, Zhang X, Wang S, Luo Z, Luo M, Zeng X. Metal-carbene-guided twofold cross-coupling of ethers with chromium catalysis. Nat Commun 2024; 15:6455. [PMID: 39085244 PMCID: PMC11292013 DOI: 10.1038/s41467-024-50675-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 07/18/2024] [Indexed: 08/02/2024] Open
Abstract
Coupling by metal-carbene transfer enables the formation of several different bonds at the carbenoid site, enabling prochiral Csp3 centers that are fundamental three-dimensional substructures for medicines to be forged with increased efficiency. However, strategies using bulk chemicals are rare because of the challenge of breaking two unactivated geminal bonds. Herein, we report the reactivity of ethers to form metal-carbene intermediate by cleavage of α-Csp3-H/Csp3-O bonds, which achieve selective coupling with arylmagnesium bromides and chlorosilanes. These couplings are catalysed by cyclic (alkyl)(amino)carbene-chromium complex and enable the one-step formation of 1,n-arylsilyl alcohols and α-arylated silanes. Mechanistic studies indicate that the in-situ formed low-valent Cr might react with iodobenzene to form phenyl radical species, which abstracts the α-H atom of ether in giving α-oxy radical. The latter combines with Cr by breaking α-Csp3-O bond to afford metal-carbene intermediate, which couples with aryl Grignard and chlorosilane to form two σ-bonds.
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Affiliation(s)
- Fei Fan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Yong Peng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xiaoyu Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Sha Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Zheng Luo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Meiming Luo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China.
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2
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Wang X, Zhong J, Luo M, Zeng X. Cr-Catalyzed Intramolecular Arylative Cross-Coupling of Unactivated C-H Bonds with C-Halide Bonds. Org Lett 2024; 26:4093-4097. [PMID: 38717255 DOI: 10.1021/acs.orglett.4c01145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
We report here a chromium-catalyzed intramolecular arylation of unactivated C-H bonds with C-halide bonds under mild conditions. This reaction was enabled by using a low-cost CrCl2 salt as the precatalyst in combination with allylmagnesium bromide and E/Z-mixed 1-halo-2-styrylarenes as substates, providing a strategy for the construction of functionalized phenanthrene compounds without using external ligands.
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Affiliation(s)
- Xuelan Wang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Jiaoyue Zhong
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Meiming Luo
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
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3
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Wang S, Long L, Zhang X, Ling L, Chen H, Zeng X. Chemoselective Three-Component Geminal Cross Couplings of Dihaloalkanes with Cr Catalysis: Rapid Access to Tertiary and Quaternary Alkanes via a Metal-Carbene Intermediate. Angew Chem Int Ed Engl 2023; 62:e202312856. [PMID: 37706327 DOI: 10.1002/anie.202312856] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/09/2023] [Accepted: 09/14/2023] [Indexed: 09/15/2023]
Abstract
Geminal cross couplings using multiple components enable the formation of several different bonds at one site in the building of tertiary and quaternary alkanes. Nevertheless, there are remaining issues of concern-cleavage of two geminal bonds and control of selectivity present challenges. We report here the geminal cross couplings of three components by reactions of dihaloalkanes with organomagnesium and chlorosilanes or alkyl tosylates by Cr catalysis, affording the formation of geminal C-C/C-Si or C-C/C-C bonds in the creation of tertiary and quaternary alkanes. The geminal couplings are catalyzed by low-cost CrCl2 , enabling the sluggishness of competitive Kumada-type side couplings and homocouplings of Grignard reagents, in achieving high chemoselectivity. Experimental and theoretical studies indicate that two geminal C-halide bonds are continuously cleaved by Cr to afford a metal carbene intermediate, which couples with a Grignard reagent, followed by silylation, in the formation of geminal C-C and C-Si bonds via a novel inner-sphere radical coupling mechanism. These three-component geminal cross couplings are value-addition to the synthesis of commercial drugs and bioactive molecules in medicinal chemistry.
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Affiliation(s)
- Sha Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Linhong Long
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xiaoyu Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Liang Ling
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Hui Chen
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
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4
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Zhao X, Wang J, Liu D, Kong W, Zhang J. Chromium Ethylene Tri-/Tetramerization Catalysts Supported by Iminophosphine Ligands. ACS OMEGA 2023; 8:34549-34556. [PMID: 37780000 PMCID: PMC10536060 DOI: 10.1021/acsomega.3c03356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 08/21/2023] [Indexed: 10/03/2023]
Abstract
A new class of highly active ethylene tri-/tetramerization chromium catalysts supported by iminophosphine ligands has been studied. The impact of electronic and steric changes of these ligands on selectivity and activity has been investigated by varying P- and/or N-substituents. Upon activation with MMAO, the ligand bearing a P-cyclohexyl group displayed a high activity of 307 kg/(g Cr/h) with a high trimerization selectivity of 92.6%. Decreasing the steric hindrance of N-aryl group led to a decrease in 1-hexene selectivity (74.5%), producing more 1-octene (10.3%). X-ray diffraction analysis verifies that the ligands coordinate with the chromium center in a κ2-P,N mode.
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Affiliation(s)
- Xing Zhao
- Key Laboratory for Advanced
Materials and Institute of Fine Chemicals, School of Chemistry &
Molecular Engineering, East China University
of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Jihe Wang
- Key Laboratory for Advanced
Materials and Institute of Fine Chemicals, School of Chemistry &
Molecular Engineering, East China University
of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Dongchang Liu
- Key Laboratory for Advanced
Materials and Institute of Fine Chemicals, School of Chemistry &
Molecular Engineering, East China University
of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Weihuan Kong
- Key Laboratory for Advanced
Materials and Institute of Fine Chemicals, School of Chemistry &
Molecular Engineering, East China University
of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Jun Zhang
- Key Laboratory for Advanced
Materials and Institute of Fine Chemicals, School of Chemistry &
Molecular Engineering, East China University
of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
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5
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Cong X, Zeng X. Mechanistic Diversity of Low-Valent Chromium Catalysis: Cross-Coupling and Hydrofunctionalization. Acc Chem Res 2021; 54:2014-2026. [PMID: 33829759 DOI: 10.1021/acs.accounts.1c00096] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
ConspectusTransition-metal catalysis has traditionally been dominated by precious metals because of their high reactivity toward chemical transformations. As a cost-effective alternative, catalysis by earth-abundant group 6 metal chromium is underdeveloped, and its reactivity remains largely unexplored, although the industrially important Phillips catalyst, which is composed of Cr as the active metal, is currently used to supply almost 40% of the total world demand for high-density polyethylene. Cr has traditionally served in organoreagents with high-valent states (≥2+), which are typified by reactions involving Nozaki-Hiyama-Kishi (NHK) and Takai-Utimoto one-electron transfer processes. Given that low-valent metals usually facilitate the process of oxidative addition (OA), studying the catalysis of Cr in the low-valent state provides the opportunity to develop new transformations. However, probably because of the low stability of reactive low-valent Cr or the lack of catalytic activity of structurally stable complexes, there has been limited success with respect to developing catalysis promoted by low-valent Cr. In recent years, our group has probed the reactivity of low-valent Cr in catalysis by adopting a strategy of forming reactive Cr in situ. In this Account, we detail our efforts to study the catalytic behavior and mechanism of low-valent Cr in challenging transformations, such as the cleavage of chemically inert bonds for the cross-coupling and hydrofunctionalization of arenes and nitro motifs, by developing strategies to address the prominent selectivity issues. We highlight the finding that low-valent Cr, being formed in situ, possesses the intriguing ability to promote the catalytic cleavage of unactivated C-O, C-N, and C-H bonds to achieve the Kumada couplings and even to enable challenging cross-coupling between two unactivated C(aryl)-O/C(aryl)-N bonds. During these catalytic processes, Cr usually adopts a high-spin state to interact with chemicals, allowing for insertion into unactivated σ-bonds. The OA catalytic model involving a two-electron process for the cleavage of unactivated bonds has rarely been considered for Cr. We highlight the finding that Cr allows for the breakage of two chemically inert bonds in one catalytic cycle. This ability is intriguing because most transition metals are suitable only for the cleavage of one unactivated bond in catalysis. Mechanisms involving two-electron OA for Cr are unusual, with processes involving one-electron transfer more often proposed, as exemplified in the NHK reactions. These reactions provide efficient strategies for forming functionalized benzaldehydes, amides, anilines, and amines, usually with high levels of selectivity. We hope that this account will extend the scope of cognition to Cr catalysis.
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Affiliation(s)
- Xuefeng Cong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
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6
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In situ formed Cr(III) based silicon-bridged PNS systems for selective ethylene tri-/tetramerization. J Catal 2019. [DOI: 10.1016/j.jcat.2019.08.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Han B, Ma P, Cong X, Chen H, Zeng X. Chromium- and Cobalt-Catalyzed, Regiocontrolled Hydrogenation of Polycyclic Aromatic Hydrocarbons: A Combined Experimental and Theoretical Study. J Am Chem Soc 2019; 141:9018-9026. [DOI: 10.1021/jacs.9b03328] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Bo Han
- Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
- Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry & Chemical Engineering, Yan’an University, Yan’an 716000, China
| | - Pengchen Ma
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xuefeng Cong
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Hui Chen
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaoming Zeng
- Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
- College of Chemistry, Sichuan University, Chengdu 610064, China
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8
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Hirscher NA, Perez Sierra D, Agapie T. Robust Chromium Precursors for Catalysis: Isolation and Structure of a Single-Component Ethylene Tetramerization Precatalyst. J Am Chem Soc 2019; 141:6022-6029. [PMID: 30871318 DOI: 10.1021/jacs.9b01387] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have introduced a new class of stable organometallic Cr reagents (compounds 1-4) that are readily prepared, yet reactive enough to serve as precursors. They were used for ethylene tetramerization catalysis following stoichiometric activation by in situ protonation. This study highlights the importance of balancing stability with reactivity in generating an organometallic precursor that is useful in catalysis. Moreover, precursor 4 allowed for the isolation and crystallographic characterization of a room-temperature stable cationic species, (PNP)CrR2+ (R = o-C6H4(CH2)2OMe, PNP = iPrN(PPh2)2). This complex (5) may be used as a single component precatalyst, without any alkylaluminum reagents. This result provides an unprecedented level of insight into the kind of structures that must be produced from more complicated activation processes.
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Affiliation(s)
- Nathanael A Hirscher
- Division of Chemistry and Chemical Engineering , California Institute of Technology , 1200 East California Boulevard , MC 127-72, Pasadena , California 91125 , United States
| | - Danny Perez Sierra
- Division of Chemistry and Chemical Engineering , California Institute of Technology , 1200 East California Boulevard , MC 127-72, Pasadena , California 91125 , United States
| | - Theodor Agapie
- Division of Chemistry and Chemical Engineering , California Institute of Technology , 1200 East California Boulevard , MC 127-72, Pasadena , California 91125 , United States
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9
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Fan F, Tang J, Luo M, Zeng X. Chromium-Catalyzed Regioselective Kumada Arylative Cross-Coupling of C(aryl)–O Bonds with a Traceless Activation Strategy. J Org Chem 2018; 83:13549-13559. [DOI: 10.1021/acs.joc.8b02104] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Fei Fan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Jinghua Tang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Meiming Luo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
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10
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Vrána J, Jambor R, RůŽička A, Dostál L. New synthetic strategies leading to [RNPNR] - anions and the isolation of the [P(Nt-Bu) 3] 3- trianion. Dalton Trans 2018; 47:8434-8441. [PMID: 29897357 DOI: 10.1039/c8dt02141d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
New and straightforward synthetic paths for the syntheses of [RNPNR]- anions (R = t-Bu (1) or CPh3 (6)) in the form of their tmeda- or thf-coordinated lithium salts are described. The attempts to isolate the sodium analogue [(Ph3CNPNCPh3)Na·(thf)x] (8) remained unsuccessful probably due to its high reactivity although its formation in the reaction of the parent cis-[(Ph3CNP)2(Ph3CNH)2] (5) with 2 eq. of sodium naphthalenide was corroborated by NMR spectroscopy. Importantly, when an excess of sodium naphthalenide was used in the reaction with 5, [(Ph3C)Na(thf)3] (9) was obtained along with a complex mixture of other by-products indicating the cleavage of the C-N bond in the starting material. Furthermore, the synthesis and the structural characterization of the [P(Nt-Bu)3]3- trianion as its trilithium salt [P(Nt-Bu)3Li3]2 (10) has been successfully achieved.
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Affiliation(s)
- Jan Vrána
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, CZ-532 10, Pardubice, Czech Republic.
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11
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Chen C, Liu P, Luo M, Zeng X. Kumada Arylation of Secondary Amides Enabled by Chromium Catalysis for Unsymmetric Ketone Synthesis under Mild Conditions. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01380] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Changpeng Chen
- Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Pei Liu
- Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
| | - Meiming Luo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaoming Zeng
- Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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12
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Tang J, Liu P, Zeng X. N-Heterocyclic carbene–chromium-catalyzed alkylative cross-coupling of benzamide derivatives with aliphatic bromides. Chem Commun (Camb) 2018; 54:9325-9328. [DOI: 10.1039/c8cc05026k] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Described here is a chromium-catalyzed alkylative cross-coupling of benzamide derivatives with aliphatic electrophiles under mild conditions.
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Affiliation(s)
- Jinghua Tang
- Frontier Institute of Science and Technology
- Xi’an Jiaotong University
- Xi’an 710054
- China
- Key Laboratory of Green Chemistry & Technology
| | - Pei Liu
- Frontier Institute of Science and Technology
- Xi’an Jiaotong University
- Xi’an 710054
- China
- Key Laboratory of Green Chemistry & Technology
| | - Xiaoming Zeng
- Frontier Institute of Science and Technology
- Xi’an Jiaotong University
- Xi’an 710054
- China
- Key Laboratory of Green Chemistry & Technology
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13
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Cong X, Fan F, Ma P, Luo M, Chen H, Zeng X. Low-Valent, High-Spin Chromium-Catalyzed Cleavage of Aromatic Carbon–Nitrogen Bonds at Room Temperature: A Combined Experimental and Theoretical Study. J Am Chem Soc 2017; 139:15182-15190. [DOI: 10.1021/jacs.7b08579] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xuefeng Cong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Fei Fan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Pengchen Ma
- Beijing National
Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry,
CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Meiming Luo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Hui Chen
- Beijing National
Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry,
CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
- Frontier
Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
- State
Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
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14
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Nomura K, Mitsudome T, Igarashi A, Nagai G, Tsutsumi K, Ina T, Omiya T, Takaya H, Yamazoe S. Synthesis of (Adamantylimido)vanadium(V) Dimethyl Complex Containing (2-Anilidomethyl)pyridine Ligand and Selected Reactions: Exploring the Oxidation State of the Catalytically Active Species in Ethylene Dimerization. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00727] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kotohiro Nomura
- Department
of Chemistry, Faculty of Science and Engineering, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Takato Mitsudome
- Department
of Materials Engineering Science, Osaka University, 1-3, Machikaneyama, Toyonaka, Osaka 560-8531, Japan
| | - Atsushi Igarashi
- Department
of Chemistry, Faculty of Science and Engineering, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Go Nagai
- Department
of Chemistry, Faculty of Science and Engineering, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Ken Tsutsumi
- Department
of Chemistry, Faculty of Science and Engineering, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Toshiaki Ina
- Japan Synchrotron Radiation Research Institute (JASRI, SPring-8), Sayo, Hyogo 679-5198, Japan
| | - Takuya Omiya
- Department
of Chemistry, Faculty of Science and Engineering, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Hikaru Takaya
- International
Research Center for Elements Science (IRCELS), Institute for Chemical
Research (ICR), Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Seiji Yamazoe
- Department
of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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15
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Zhang L, Wei W, Alam F, Chen Y, Jiang T. Efficient chromium-based catalysts for ethylene tri-/tetramerization switched by silicon-bridged/N,P-based ancillary ligands: a structural, catalytic and DFT study. Catal Sci Technol 2017. [DOI: 10.1039/c7cy01561e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
High performance catalysts switched by a series of silicon-bridged/N,P-based ancillary ligands have been explored.
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Affiliation(s)
- Le Zhang
- Tianjin Key Laboratory of Marine Resources and Chemistry
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin 300457
- China
| | - Wei Wei
- Tianjin Key Laboratory of Marine Resources and Chemistry
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin 300457
- China
| | - Fakhre Alam
- Tianjin Key Laboratory of Marine Resources and Chemistry
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin 300457
- China
| | - Yanhui Chen
- Tianjin Key Laboratory of Marine Resources and Chemistry
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin 300457
- China
| | - Tao Jiang
- Tianjin Key Laboratory of Marine Resources and Chemistry
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin 300457
- China
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16
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Liu R, Zhu K, Zhong X, Li J, Liu Z, Chen S, Zhu H. Chromium complexes bearing amidinato-phosphino ligand: synthesis, characterization, and catalytic properties of ethylene tri-/tetramerization and polymerization. Dalton Trans 2016; 45:17020-17029. [PMID: 27711770 DOI: 10.1039/c6dt03216h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
An amidinato-phosphino ligand ArN[double bond, length as m-dash]C(R)NH(o-Ph2PC6H4) (Ar = 2,4,6-Me3C6H2, R = Ph (1); Ar = 2,6-iPr2C6H3, R = Ph (2); Ar = 2,6-iPr2C6H3, R = tBu (3)) was prepared. The ligand reacted with CrCl3(THF)3 to yield the N,P-chelation complex [ArNHC(R)[double bond, length as m-dash]N(o-Ph2PC6H4)]CrCl3(THF) (4-6), and the ligand's lithium salt ArN[double bond, length as m-dash]C(R)N(o-Ph2PC6H4)Li reacted with the respective CrCl3(THF)3 and CrCl2(THF)2 to give the N,N,P-chelation complexes [ArN[double bond, length as m-dash]C(R)N(o-Ph2PC6H4)]CrCl2(THF) (7-8) and {[ArN[double bond, length as m-dash]C(R)N(o-Ph2PC6H4)]Cr(μ-Cl)}2 (9-11). Complexes 1-11 were characterized by IR, NMR (for 1-3), EPR (for 4-11) spectroscopy and CHN elemental analysis, of which 3, 5, 8, and 11 were further studied by X-ray crystallography. Upon activation with an organoaluminum cocatalyst, complexes 4-6 were all catalytically active in ethylene tri-/tetramerization along with ethylene polymerization, and complexes 7-11 functioned as well but in ethylene polymerization. The correlation between the structure and the catalytic properties of the catalyst system is discussed.
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Affiliation(s)
- Rui Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
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17
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Peganova TA, Sinopalnikova IS, Peregudov AS, Fedyanin IV, Demonceau A, Ustynyuk NA, Kalsin AM. The half-sandwich 18- and 16-electron arene ruthenium iminophosphonamide complexes. Dalton Trans 2016; 45:17030-17041. [DOI: 10.1039/c6dt03202h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Novel arene ruthenium iminophosphonamides are electron-rich complexes due to a strong σ,π-donor zwitterionic ligand.
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Affiliation(s)
- Tat'yana A. Peganova
- A.N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - Iana S. Sinopalnikova
- A.N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - Alexander S. Peregudov
- A.N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - Ivan V. Fedyanin
- A.N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - Albert Demonceau
- Laboratory of Macromolecular Chemistry and Organic Catalysis
- Department of Chemistry
- University of Liège
- 4000 Liège
- Belgium
| | - Nikolai A. Ustynyuk
- A.N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - Alexander M. Kalsin
- A.N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- 119991 Moscow
- Russia
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18
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Cong X, Tang H, Zeng X. Regio- and Chemoselective Kumada–Tamao–Corriu Reaction of Aryl Alkyl Ethers Catalyzed by Chromium Under Mild Conditions. J Am Chem Soc 2015; 137:14367-72. [DOI: 10.1021/jacs.5b08621] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Xuefeng Cong
- Center
for Organic Chemistry, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
| | - Huarong Tang
- Center
for Organic Chemistry, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
| | - Xiaoming Zeng
- Center
for Organic Chemistry, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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19
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20
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Zhang J, Qiu P, Liu Z, Liu B, Batrice RJ, Botoshansky M, Eisen MS. Mechanistic Studies on the Switching from Ethylene Polymerization to Nonselective Oligomerization over the Triphenylsiloxy Chromium(II)/Methylaluminoxane Catalyst. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00240] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jialong Zhang
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People’s Republic of China
| | - Pengyuan Qiu
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People’s Republic of China
- Shanghai
Research Institute of Petrochemical Technology, SINOPEC, 1658 Pudong
Beilu, Shanghai, 201208, People’s Republic of China
| | - Zhen Liu
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People’s Republic of China
| | - Boping Liu
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People’s Republic of China
| | - Rami J. Batrice
- Schulich
Faculty of Chemistry, Technion-Israel Institute of Technology, Technion
City, Haifa 32000, Israel
| | - Mark Botoshansky
- Schulich
Faculty of Chemistry, Technion-Israel Institute of Technology, Technion
City, Haifa 32000, Israel
| | - Moris S. Eisen
- Schulich
Faculty of Chemistry, Technion-Israel Institute of Technology, Technion
City, Haifa 32000, Israel
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21
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Vadake Kulangara S, Haveman D, Vidjayacoumar B, Korobkov I, Gambarotta S, Duchateau R. Effect of Cocatalysts and Solvent on Selective Ethylene Oligomerization. Organometallics 2015. [DOI: 10.1021/om501013m] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Shaneesh Vadake Kulangara
- Department
of Chemical Engineering and Chemistry, University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Daniel Haveman
- Department
of Chemical Engineering and Chemistry, University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Bala Vidjayacoumar
- Department
of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- X-ray
Core Facility, Faculty of Science, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Sandro Gambarotta
- Department
of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Rob Duchateau
- Department
of Chemical Engineering and Chemistry, University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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22
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Zeng X, Cong X. Chromium-catalyzed transformations with Grignard reagents – new opportunities for cross-coupling reactions. Org Chem Front 2015. [DOI: 10.1039/c4qo00272e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Recent advances in chromium-catalyzed cross-couplings of C–X and C–H bonds with Grignard reagents are highlighted.
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Affiliation(s)
- Xiaoming Zeng
- Center for Organic Chemistry
- Frontier Institute of Science and Technology
- Xi'an Jiaotong University
- Xi'an
- P. R. China
| | - Xuefeng Cong
- Center for Organic Chemistry
- Frontier Institute of Science and Technology
- Xi'an Jiaotong University
- Xi'an
- P. R. China
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23
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Hossain MA, Kim HS, Houk K, Cheong M. Spin-crossover in Chromium-catalyzed Ethylene Trimerization: Density Functional Theory Study. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.9.2835] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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24
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Yang Y, Gurnham J, Liu B, Duchateau R, Gambarotta S, Korobkov I. Selective Ethylene Oligomerization with Chromium Complexes Bearing Pyridine–Phosphine Ligands: Influence of Ligand Structure on Catalytic Behavior. Organometallics 2014. [DOI: 10.1021/om5003683] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Yun Yang
- Department
of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China
| | - Joanna Gurnham
- Department
of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Boping Liu
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China
| | - Robbert Duchateau
- Department
of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
| | - Sandro Gambarotta
- Department
of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- X-ray
Core facility, Faculty of Science, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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25
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Alzamly A, Gambarotta S, Korobkov I, Murugesu M, Le Roy JJH, Budzelaar PHM. Isolation of a hexanuclear chromium cluster with a tetrahedral hydridic core and its catalytic behavior for ethylene oligomerization. Inorg Chem 2014; 53:6073-81. [PMID: 24874446 DOI: 10.1021/ic500445b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A chromium complex [2-(NHCH2PPh2)C5H4N]CrCl3·THF2 (1) of the ligand PyNHCH2PPh2 has been synthesized, characterized, and examined for its catalytic behavior toward ethylene oligomerization. When complex 1 was treated with (i-Bu)3Al, an unprecedented divalent polyhydride chromium cluster μ,κ(1),κ(2),κ(3)-N,N,P-{[2-(NCH2PPh2)C5H4N]Cr(μ-H)}4[(μ-Cl)Cr(μ-Cl)Al(i-Bu)2Cl]2 (2) was obtained. The complex contains a Cr4H4 core, which is expected to be diamagnetic, and which remains coordinated to two additional divalent high-spin Cr atoms via bridging interactions. Two aluminate residues remain bonded to the peripheral chromium atoms. The structure, magnetism, and electronic configuration are herein discussed.
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Affiliation(s)
- Ahmed Alzamly
- Department of Chemistry, University of Ottawa , 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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26
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Tang XY, Igarashi A, Sun WH, Inagaki A, Liu J, Zhang W, Li YS, Nomura K. Synthesis of (Imido)vanadium(V) Complexes Containing 8-(2,6-Dimethylanilide)-5,6,7-trihydroquinoline Ligands: Highly Active Catalyst Precursors for Ethylene Dimerization. Organometallics 2014. [DOI: 10.1021/om401119y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Xiao-Yan Tang
- Department of Chemistry,
Graduate School of
Science and Engineering, Tokyo Metropolitan University, 1-1 minami
Osawa, Hachioji, Tokyo 192-0397, Japan
- State Key Laboratory of Polymer Physics and
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Atsushi Igarashi
- Department of Chemistry,
Graduate School of
Science and Engineering, Tokyo Metropolitan University, 1-1 minami
Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Wen-Hua Sun
- Key
Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Akiko Inagaki
- Department of Chemistry,
Graduate School of
Science and Engineering, Tokyo Metropolitan University, 1-1 minami
Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Jingyu Liu
- State Key Laboratory of Polymer Physics and
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Wenjuan Zhang
- Key
Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Yue-Sheng Li
- State Key Laboratory of Polymer Physics and
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Kotohiro Nomura
- Department of Chemistry,
Graduate School of
Science and Engineering, Tokyo Metropolitan University, 1-1 minami
Osawa, Hachioji, Tokyo 192-0397, Japan
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27
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Liu Z, He X, Cheng R, Eisen MS, Terano M, Scott SL, Liu B. Chromium Catalysts for Ethylene Polymerization and Oligomerization. CATALYSIS AND KINETICS - MOLECULAR LEVEL CONSIDERATIONS 2014. [DOI: 10.1016/b978-0-12-419974-3.00003-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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28
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Alzamly A, Gambarotta S, Korobkov I. Synthesis, Structures, and Ethylene Oligomerization Activity of Bis(phosphanylamine)pyridine Chromium/Aluminate Complexes. Organometallics 2013. [DOI: 10.1021/om4008289] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ahmed Alzamly
- Department
of Chemistry, University of Ottawa, 10 M. Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Sandro Gambarotta
- Department
of Chemistry, University of Ottawa, 10 M. Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- Department
of Chemistry, University of Ottawa, 10 M. Curie, Ottawa, Ontario K1N 6N5, Canada
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29
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Yang Y, Liu Z, Liu B, Duchateau R. Selective Ethylene Tri-/Tetramerization by in Situ-Formed Chromium Catalysts Stabilized by N,P-Based Ancillary Ligand Systems. ACS Catal 2013. [DOI: 10.1021/cs4004968] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Yun Yang
- State Key
Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China
- Department
of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Zhen Liu
- State Key
Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China
| | - Boping Liu
- State Key
Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China
| | - Robbert Duchateau
- Department
of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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30
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Shaikh Y, Gurnham J, Albahily K, Gambarotta S, Korobkov I. Aminophosphine-Based Chromium Catalysts for Selective Ethylene Tetramerization. Organometallics 2012. [DOI: 10.1021/om3007135] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Yacoob Shaikh
- Department of Chemistry, University of Ottawa, Ottawa, Ont. K1N 6N5, Canada
| | - Joanna Gurnham
- Department of Chemistry, University of Ottawa, Ottawa, Ont. K1N 6N5, Canada
| | - Khalid Albahily
- Department of Chemistry, University of Ottawa, Ottawa, Ont. K1N 6N5, Canada
| | - Sandro Gambarotta
- Department of Chemistry, University of Ottawa, Ottawa, Ont. K1N 6N5, Canada
| | - Ilia Korobkov
- Department of Chemistry, University of Ottawa, Ottawa, Ont. K1N 6N5, Canada
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31
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Kulangara SV, Mason C, Juba M, Yang Y, Thapa I, Gambarotta S, Korobkov I, Duchateau R. Synthesis and Catalytic Oligomerization Activity of Chromium Catalysts of Ligand Systems with Switchable Connectivity. Organometallics 2012. [DOI: 10.1021/om300673u] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Shaneesh Vadake Kulangara
- Department
of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600
MB Eindhoven, The Netherlands
| | - Chris Mason
- Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Michael Juba
- Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Yun Yang
- Department
of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600
MB Eindhoven, The Netherlands
| | - Indira Thapa
- Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Sandro Gambarotta
- Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- X-ray Core
Facility, Faculty of Science, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Rob Duchateau
- Department
of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600
MB Eindhoven, The Netherlands
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32
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Shaikh Y, Albahily K, Sutcliffe M, Fomitcheva V, Gambarotta S, Korobkov I, Duchateau R. A Highly Selective Ethylene Tetramerization Catalyst. Angew Chem Int Ed Engl 2012; 51:1366-9. [DOI: 10.1002/anie.201106517] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Indexed: 11/08/2022]
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33
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Shaikh Y, Albahily K, Sutcliffe M, Fomitcheva V, Gambarotta S, Korobkov I, Duchateau R. A Highly Selective Ethylene Tetramerization Catalyst. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201106517] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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34
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Thapa I, Gambarotta S, Korobkov I, Murugesu M, Budzelaar P. Isolation and Characterization of a Class II Mixed-Valence Chromium(I)/(II) Self-Activating Ethylene Trimerization Catalyst. Organometallics 2011. [DOI: 10.1021/om201181n] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Indira Thapa
- Department of Chemistry, University of Ottawa, Ottawa, Ontario, Canada
| | - Sandro Gambarotta
- Department of Chemistry, University of Ottawa, Ottawa, Ontario, Canada
| | - Ilia Korobkov
- X-ray Core Facility, University of Ottawa, Ottawa, Ontario, Canada
| | - Muralee Murugesu
- Department of Chemistry, University of Ottawa, Ottawa, Ontario, Canada
| | - Peter Budzelaar
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba, Canada
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35
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Albahily K, Ahmed Z, Gambarotta S, Koç E, Duchateau R, Korobkov I. New Iminophosphonamide Chromium(II) Complexes as Highly Active Polymer-Free Ethylene Oligomerization Catalysts. Organometallics 2011. [DOI: 10.1021/om2008474] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Khalid Albahily
- Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Zeeshan Ahmed
- Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Sandro Gambarotta
- Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Ece Koç
- Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
| | - Robbert Duchateau
- Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
| | - Ilia Korobkov
- X-ray Core Facility, Faculty of Science, Ottawa, Ontario K1N 6N5, Canada
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36
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Yang Y, Liu Z, Zhong L, Qiu P, Dong Q, Cheng R, Vanderbilt J, Liu B. Spin Surface Crossing between Chromium(I)/Sextet and Chromium(III)/Quartet without Deprotonation in SNS-Cr Mediated Ethylene Trimerization. Organometallics 2011. [DOI: 10.1021/om200722r] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Yun Yang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Zhen Liu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Lei Zhong
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Pengyuan Qiu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Qi Dong
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Ruihua Cheng
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Jeffrey Vanderbilt
- Westlake Chemical Corporation, P.O. Box 8388, Longview, Texas 75607, United States
| | - Boping Liu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
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37
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Albahily K, Fomitcheva V, Shaikh Y, Sebastiao E, Gorelsky SI, Gambarotta S, Korobkov I, Duchateau R. New Self-Activating Organochromium Catalyst Precursor for Selective Ethylene Trimerization. Organometallics 2011. [DOI: 10.1021/om200560e] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Robbert Duchateau
- Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
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