1
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Sawant DM, Joshi G, Ansari AJ. Nitrene-transfer from azides to isocyanides: Unveiling its versatility as a promising building block for the synthesis of bioactive heterocycles. iScience 2024; 27:109311. [PMID: 38510111 PMCID: PMC10951658 DOI: 10.1016/j.isci.2024.109311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024] Open
Abstract
Cross-coupling azide and isocyanide have recently gained recognition as ideal methods for efficiently synthesizing asymmetric carbodiimides. This reaction exhibits high reaction rates, efficiency, and favorable atom/step/redox economy. It enables the nitrene-transfer process, facilitating the formation of C-N bonds and providing a direct and cost-effective synthetic strategy for generating diverse carbodiimides. These carbodiimides are highly reactive compounds that can undergo in-situ transformations into various functional groups and organic compounds, including heterocycles. Developing one-pot and tandem processes in this field has significantly contributed to advancements in organic chemistry. Moreover, the demonstrated utility of these architectural motifs extends to areas such as chemical biology and medicinal chemistry, further highlighting their potential in various scientific applications.
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Affiliation(s)
- Devesh M. Sawant
- Department of Pharmacy, Central University of Rajasthan, Ajmer 305817, India
| | - Gaurav Joshi
- Department of Pharmaceutical Sciences, Hemvati Nandan Bahuguna Garhwal University, Srinagar 246174, India
- Department of Biotechnology, Graphic Era (Deemed to be University), Dehradun 248002, Uttarakhand, India
| | - Arshad J. Ansari
- Department of Pharmacy, Central University of Rajasthan, Ajmer 305817, India
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2
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Goswami D, Mishra D, Phukan P. Silver acetate-catalyzed synthesis of cyclic sulfonyl guanidine with exocyclic double bond. Mol Divers 2023; 27:2545-2553. [PMID: 36376719 DOI: 10.1007/s11030-022-10568-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 11/05/2022] [Indexed: 11/16/2022]
Abstract
An efficient protocol for the synthesis of cyclic guanidine with exocyclic double bond has been developed. The synthesis has been achieved via intramolecular hydroamination of an intermediate propargyl guanidine by using silver acetate as catalyst in the presence of acetic acid. The reaction proceeds via the formation of acyclic propargyl guanidine in a one-pot reaction of N,N-dibromoarylsulfonamides, isonitriles, and propargylamine in the presence of K2CO3. In the second stage of the synthesis, the acyclic guanidine selectively undergoes 5-exo-dig cyclization in the presence of silver acetate and acetic acid to produce the five-membered cyclic guanidine framework having an exocyclic double bond as the constituent part. Short reaction time, wide substrate scope with good to high yields, and good functional group tolerance are the remarkable achievement of the present protocol.
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Affiliation(s)
- Dikshita Goswami
- Department of Chemistry, Gauhati University, Guwahati, Assam, 781014, India
| | - Debashish Mishra
- Department of Chemistry, Gauhati University, Guwahati, Assam, 781014, India
| | - Prodeep Phukan
- Department of Chemistry, Gauhati University, Guwahati, Assam, 781014, India.
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3
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Mishra D, Rajkhowa S, Phukan P. Unanticipated switch of reactivity of isonitrile via N≡C bond scission: Cascade formation of symmetrical sulfonyl guanidine. iScience 2023; 26:107258. [PMID: 37520733 PMCID: PMC10384224 DOI: 10.1016/j.isci.2023.107258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 05/02/2023] [Accepted: 06/27/2023] [Indexed: 08/01/2023] Open
Abstract
Unanticipated formation of symmetrical sulfonyl guanidine was observed while treating isonitriles with N,N-dibromoarylsulfonamides in absence of an external amine source. Interesting feature of this work is that one molecule of isonitrile initially reacts with dibromoarylsulfonamide via the C-end to produce the intermediate carbodiimide while the other molecule undergoes C≡N triple bond cleavage to react as amine source with the intermediate. This switch of reactivity from C-center to N-center of the isonitrile generated symmetrical guanidine.
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Affiliation(s)
- Debashish Mishra
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
| | - Sagarika Rajkhowa
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
| | - Prodeep Phukan
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
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4
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Jung H, Kweon J, Suh JM, Lim MH, Kim D, Chang S. Mechanistic snapshots of rhodium-catalyzed acylnitrene transfer reactions. Science 2023:eadh8753. [PMID: 37471480 DOI: 10.1126/science.adh8753] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 06/26/2023] [Indexed: 07/22/2023]
Abstract
Rhodium acylnitrene complexes are widely implicated in catalytic C-H amidation reactions but have eluded isolation and structural characterization. To overcome this challenge, we designed a chromophoric octahedral rhodium complex with a bidentate dioxazolone ligand, in which photoinduced metal-to-ligand charge transfer initiates catalytic C-H amidation. X-ray photocrystallographic analysis of the Rh-dioxazolone complex allowed structural elucidation of the targeted Rh-acylnitrenoid and provided firm evidence that the singlet nitrenoid species is primarily responsible for acylamino transfer reactions. We also monitored in crystallo reaction of a nucleophile with the in situ generated Rh-acylnitrenoid, providing a crystallographically traceable reaction system to capture mechanistic snapshots of nitrenoid transfer.
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Affiliation(s)
- Hoimin Jung
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Jeonguk Kweon
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Jong-Min Suh
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Mi Hee Lim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Dongwook Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
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5
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Cu2O/CuO@mont K 10 promoted one-pot synthesis of 1,2,3-triazoles through azide-alkyne cycloaddition reaction. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02203-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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6
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Zhang Z, Tan P, Chang W, Zhang Z. Transition‐Metal‐Catalyzed Cross‐Coupling and Sequential Reactions of Azides with Isocyanides. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101107] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Zhen Zhang
- College of Chemistry and Chemical Engineering Yantai University Yantai 264005 People's Republic of China
| | - Pengpeng Tan
- College of Chemistry and Chemical Engineering Yantai University Yantai 264005 People's Republic of China
| | - Wenxu Chang
- College of Science China Agricultural University Beijing 100193 People's Republic of China
| | - Zhenhua Zhang
- College of Science China Agricultural University Beijing 100193 People's Republic of China
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7
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Mishra D, Phukan P. A Unified Approach for the Synthesis of Isourea and Isothiourea from Isonitrile and N,N-Dibromoarylsulfonamides. J Org Chem 2021; 86:17581-17593. [PMID: 34855412 DOI: 10.1021/acs.joc.1c01578] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A unified approach has been developed for the synthesis of both isourea and isothiourea in a three-component coupling reaction by treating alcohols or thiols respectively with N,N-dibromoarylsulfonamides and isonitrile and in the presence of K2CO3. This metal-free process proceeds via carbodiimide intermediate at room temperature within a very short reaction time. A library of sulfonylisoureas and isothioureas has been made using this synthetic protocol with wide substrate scope in good to high yields.
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Affiliation(s)
- Debashish Mishra
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
| | - Prodeep Phukan
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
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8
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Chiral bis(pyrazolyl)methane copper(I) complexes and their application in nitrene transfer reactions. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2021. [DOI: 10.1515/znb-2021-0140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this study, chiral bis(pyrazolyl)methane copper(I) acetonitrile complexes were applied to generate two novel terminal copper tosyl nitrene complexes with the nitrene generating agent SPhINTs in dichloromethane at low temperatures. The syntheses of the chiral bis(pyrazolyl)methane ligands are based on pulegone and camphor, members of the natural chiral pool. The chiral copper(I) acetonitrile complexes were applied as catalysts in the copper nitrene mediated aziridination reaction of different styrene derivatives and the C–H amination of various substrates. The reactions afforded good yields, but low enantiomeric excess under mild conditions. The nitrene species have been characterized with UV/Vis and EPR spectroscopy and the products of the decay by ESI mass spectrometry.
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9
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Han X, Shan LX, Zhu JX, Zhang CS, Zhang XM, Zhang FM, Wang H, Tu YQ, Yang M, Zhang WS. Copper-Nitrene-Catalyzed Desymmetric Oxaziridination/1,2-Alkyl Rearrangement of 1,3-Diketones toward Bicyclic Lactams. Angew Chem Int Ed Engl 2021; 60:22688-22692. [PMID: 34414645 DOI: 10.1002/anie.202107909] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Indexed: 11/08/2022]
Abstract
Although copper-nitrene has been extensively studied as a versatile active species in various transformations, asymmetric reactions involving copper-nitrene have been limited to the aziridination of olefins. Herein, we report the novel copper-nitrene-catalyzed desymmetric oxaziridination reaction of cyclic diketones with alkyl azides and the subsequent rearrangement of the resulting highly active intermediate, which produces a synthetically challenging chiral bicyclic lactam containing a quaternary carbon center. This procedure not only enriches the copper-nitrene-catalyzed asymmetric reactions, but also provides an alternative strategy to address the inherent challenges of catalytic asymmetric Schmidt reactions. This unique reaction could inspire the investigation of novel copper-nitrene-catalyzed asymmetric transformations and their reaction mechanisms.
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Affiliation(s)
- Xue Han
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Li-Xin Shan
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Jin-Xin Zhu
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Chang-Sheng Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Hong Wang
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Yong-Qiang Tu
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China.,School of Chemistry and Chemical Engineering and Shanghai Key Laboratory of Chiral Medicine Chemistry, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Ming Yang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Wen-Shuo Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
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10
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Han X, Shan L, Zhu J, Zhang C, Zhang X, Zhang F, Wang H, Tu Y, Yang M, Zhang W. Copper‐Nitrene‐Catalyzed Desymmetric Oxaziridination/1,2‐Alkyl Rearrangement of 1,3‐Diketones toward Bicyclic Lactams. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xue Han
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Li‐Xin Shan
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Jin‐Xin Zhu
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou 310014 China
| | - Chang‐Sheng Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Xiao‐Ming Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Fu‐Min Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Hong Wang
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou 310014 China
| | - Yong‐Qiang Tu
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
- School of Chemistry and Chemical Engineering and Shanghai Key Laboratory of Chiral Medicine Chemistry Shanghai Jiao Tong University Shanghai 200240 China
| | - Ming Yang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Wen‐Shuo Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
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11
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Affiliation(s)
- Hidetoshi Noda
- Institute of Microbial Chemistry 3-14-23 Kamiosaki, Shinagaku-ku Tokyo 141-0021 Japan
| | - Xinxin Tang
- Institute of Microbial Chemistry 3-14-23 Kamiosaki, Shinagaku-ku Tokyo 141-0021 Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry 3-14-23 Kamiosaki, Shinagaku-ku Tokyo 141-0021 Japan
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12
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Mao W, Fehn D, Heinemann FW, Scheurer A, Munz D, Meyer K. A Pair of Cobalt(III/IV) Terminal Imido Complexes. Angew Chem Int Ed Engl 2021; 60:16480-16486. [PMID: 33847448 PMCID: PMC8362208 DOI: 10.1002/anie.202103170] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/29/2021] [Indexed: 12/16/2022]
Abstract
The reaction of the cobalt(I) complex [(TIMMNmes )CoI ](BPh4 ) (2) (TIMMNmes =tris-[2-(3-mesitylimidazolin-2-ylidene)methyl]amine) with 1-adamantylazide yields the cobalt(III) imido complex [(TIMMNmes )CoIII (NAd)](BPh4 ) (3) with concomitant release of dinitrogen. The N-anchor in diamagnetic 3 features an unusual, planar tertiary amine, which results from repulsive electrostatic interaction with the filled d(z2 )-orbital of the cobalt ion and negative hyperconjugation with the neighboring methylene groups. One-electron oxidation of 3 with [FeCp2 ](OTf) provides access to the rare, high-valent cobalt(IV) imido complex [(TIMMNmes )CoIV (NAd)](OTf)2 (4). Despite a half-life of less than 1 h at room temperature, 4 could be isolated at low temperatures in analytically pure form. Single-crystal X-ray diffractometry and EPR spectroscopy corroborate the molecular structure and the d5 low-spin, S= 1 / 2 , electron configuration. A computational analysis of 4 suggests high covalency within the CoIV =NAd bond with non-negligible spin density located at the imido moiety, which translates into substantial triplet nitrene character.
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Affiliation(s)
- Weiqing Mao
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)Inorganic ChemistryEgerlandstrasse 191058ErlangenGermany
| | - Dominik Fehn
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)Inorganic ChemistryEgerlandstrasse 191058ErlangenGermany
| | - Frank W. Heinemann
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)Inorganic ChemistryEgerlandstrasse 191058ErlangenGermany
| | - Andreas Scheurer
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)Inorganic ChemistryEgerlandstrasse 191058ErlangenGermany
| | - Dominik Munz
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)Inorganic ChemistryEgerlandstrasse 191058ErlangenGermany
- Current address: Saarland UniversityInorganic Chemistry: Coordination ChemistryCampus C4.166123SaarbrückenGermany
| | - Karsten Meyer
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)Inorganic ChemistryEgerlandstrasse 191058ErlangenGermany
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13
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Mao W, Fehn D, Heinemann FW, Scheurer A, Munz D, Meyer K. A Pair of Cobalt(III/IV) Terminal Imido Complexes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103170] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Weiqing Mao
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) Inorganic Chemistry Egerlandstrasse 1 91058 Erlangen Germany
| | - Dominik Fehn
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) Inorganic Chemistry Egerlandstrasse 1 91058 Erlangen Germany
| | - Frank W. Heinemann
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) Inorganic Chemistry Egerlandstrasse 1 91058 Erlangen Germany
| | - Andreas Scheurer
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) Inorganic Chemistry Egerlandstrasse 1 91058 Erlangen Germany
| | - Dominik Munz
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) Inorganic Chemistry Egerlandstrasse 1 91058 Erlangen Germany
- Current address: Saarland University Inorganic Chemistry: Coordination Chemistry Campus C4.1 66123 Saarbrücken Germany
| | - Karsten Meyer
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) Inorganic Chemistry Egerlandstrasse 1 91058 Erlangen Germany
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14
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Warm K, Monte Pérez I, Kuhlmann U, Hildebrandt P, Farquhar E, Swart M, Ray K. Stable, but still reactive – investigations on the effects of Lewis acid binding on copper nitrene intermediates. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202100092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Katrin Warm
- Institut für Chemie Humboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Inés Monte Pérez
- Institut für Chemie Humboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Uwe Kuhlmann
- Institut für Chemie Technische Universität Berlin Fakultät II Straße des 17. Juni 135 10623 Berlin Germany
| | - Peter Hildebrandt
- Institut für Chemie Technische Universität Berlin Fakultät II Straße des 17. Juni 135 10623 Berlin Germany
| | - Erik Farquhar
- Brookhaven National Laboratory NSLS-II, Bldg. 745, Room 106, P.O. Box 5000 11973-5000 Upton NY United States
| | - Marcel Swart
- Institut de Química Computacional i Catàlisi Universitat de Girona Campus Montilivi (Ciències) Maria Aurèlia Capmany i Farnés, 69 17003 Girona, ICREA and Pg. Lluís Companys 23 08010 Barcelona Spain
| | - Kallol Ray
- Institut für Chemie Humboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
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15
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Thomas F, Oster M, Schön F, Göbgen KC, Amarouch B, Steden D, Hoffmann A, Herres-Pawlis S. A new generation of terminal copper nitrenes and their application in aromatic C-H amination reactions. Dalton Trans 2021; 50:6444-6462. [PMID: 33908532 DOI: 10.1039/d1dt00832c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copper nitrene complexes are highly reactive species and are known as intermediates in the copper catalyzed C-H amination. In this study, three novel copper tosyl nitrene complexes were synthesized at low temperatures, stabilized with heteroscorpionate ligands of the bis(pyrazolyl)methane family. The copper nitrenes were obtained by the reaction of a copper(i) acetonitrile complex with SPhINTs in dichloromethane. We show that the ligand design has a major influence on the catalytic activity and the thermal stability of the copper nitrene complex. Not only the choice of the third N donor, but also the substituent in the 5-position of the pyrazolyl moiety, have an impact on the stability. Furthermore, the novel copper nitrene complexes were used for catalytic aziridination of styrenes and C-H amination reactions of aromatic and aliphatic substrates under mild reaction conditions. Even challenging substrates like benzene and cyclohexane were aminated with good yields. The copper nitrene complexes were characterized using UV/Vis spectroscopy, low temperature Evans NMR spectroscopy, density functional theory, domain-based local pair natural orbital coupled cluster calculations (DLPNO-CCSD(T)) and cryo-UHR mass spectrometry.
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Affiliation(s)
- Fabian Thomas
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, 52074 Aachen, Germany.
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16
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Desnoyer AN, Nicolay A, Ziegler MS, Lakshmi KV, Cundari TR, Tilley TD. A Dicopper Nitrenoid by Oxidation of a Cu ICu I Core: Synthesis, Electronic Structure, and Reactivity. J Am Chem Soc 2021; 143:7135-7143. [PMID: 33877827 DOI: 10.1021/jacs.1c02235] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A dicopper nitrenoid complex was prepared by formal oxidative addition of the nitrenoid fragment to a dicopper(I) center by reaction with the iminoiodinane PhINTs (Ts = tosylate). This nitrenoid complex, (DPFN)Cu2(μ-NTs)[NTf2]2 (DPFN = 2,7-bis(fluorodi(2-pyridyl)methyl)-1,8-naphthyridine), is a powerful H atom abstractor that reacts with a range of strong C-H bonds to form a mixed-valence Cu(I)/Cu(II) μ-NHTs amido complex in the first example of a clean H atom transfer to a dicopper nitrenoid core. In line with this reactivity, DFT calculations reveal that the nitrenoid is best described as an iminyl (NR radical anion) complex. The nitrenoid was trapped by the addition of water to form a mixed-donor hydroxo/amido dicopper(II) complex, which was independently obtained by reaction of a Cu2(μ-OH)2 complex with an amine through a protonolysis pathway. This mixed-donor complex is an analogue for the proposed intermediate in copper-catalyzed Chan-Evans-Lam coupling, which proceeds via C-X (X = N or O) bond formation. Treatment of the dicopper(II) mixed donor complex with MgPh2(THF)2 resulted in generation of a mixture that includes both phenol and a previously reported dicopper(I) bridging phenyl complex, illustrating that both reduction of dicopper(II) to dicopper(I) and concomitant C-X bond formation are feasible.
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Affiliation(s)
- Addison N Desnoyer
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720-1460, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Amélie Nicolay
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720-1460, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Micah S Ziegler
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720-1460, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - K V Lakshmi
- Department of Chemistry and Chemical Biology and The Baruch '60 Center for Biochemical Solar Energy, Research, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Thomas R Cundari
- Department of Chemistry, Center for Advanced Scientific Computing and Modeling (CASCaM), University of North Texas, Denton, Texas 76203, United States
| | - T Don Tilley
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720-1460, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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17
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Tak RK, Amemiya F, Noda H, Shibasaki M. Generation and application of Cu-bound alkyl nitrenes for the catalyst-controlled synthesis of cyclic β-amino acids. Chem Sci 2021; 12:7809-7817. [PMID: 34168835 PMCID: PMC8188474 DOI: 10.1039/d1sc01419f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The advent of saturated N-heterocycles as valuable building blocks in medicinal chemistry has led to the development of new methods to construct such nitrogen-containing cyclic frameworks. Despite the apparent strategic clarity, intramolecular C–H aminations with metallonitrenes have only sporadically been explored in this direction because of the intractability of the requisite alkyl nitrenes. Here, we report copper-catalysed intramolecular amination using an alkyl nitrene generated from substituted isoxazolidin-5-ones upon N–O bond cleavage. The copper catalysis exclusively aminates aromatic C(sp2)–H bonds among other potentially reactive groups, offering a solution to the chemoselectivity problem that has been troublesome with rhodium catalysis. A combined experimental and computational study suggested that the active species in the current cyclic β-amino acid synthesis is a dicopper alkyl nitrene, which follows a cyclisation pathway distinct from the analogous alkyl metallonitrene. Copper-catalysed conditions have been developed for the chemoselective synthesis of cyclic β-amino acids.![]()
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Affiliation(s)
- Raj K Tak
- Institute of Microbial Chemistry (BIKAKEN) Tokyo3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Fuyuki Amemiya
- Institute of Microbial Chemistry (BIKAKEN) Tokyo3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Hidetoshi Noda
- Institute of Microbial Chemistry (BIKAKEN) Tokyo3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN) Tokyo3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
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18
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Yu F, Zhou Z, Song J, Zhao Y. DFT and AFIR study on the copper(i)-catalyzed mechanism of 5-enamine-trisubstituted-1,2,3-triazole synthesis via C-N cross-coupling and the origin of ring-opening of 2 H-azirines. RSC Adv 2021; 11:2744-2755. [PMID: 35424213 PMCID: PMC8693862 DOI: 10.1039/d0ra07498e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 12/03/2020] [Indexed: 12/04/2022] Open
Abstract
Understanding the synthesis mechanism of substituted 1,2,3-triazoles is an important and state-of-the-art research area of contemporary copper(i)-catalyzed terminal alkyne and organic azide click reaction (CuAAC), which has invoked increasing close collaborations between experiment and theory including copper catalyzed interrupted click reaction. In this study, the mechanism of Cu(i)-catalyzed 5-enamine-functionalized fully substituted 1,2,3-triazole synthesis was rationalized via density functional theory (DFT) and multicomponent artificial force-induced reaction (MC-AFIR) methods. The reasonable reaction route consists of (a) di-copper catalyzed ring-opening of 2H-azirines, (b) alkyne hydrogen atom transfer, (c) [3 + 2] ring cycloaddition, and (d) C-N bond formation through reductive elimination. The MC-AFIR method was used for the systematic determination of transition states for the C/N-Cu bond formation, C-N bond coupling and crossing points between singlet and triplet states. Our survey on the prereactant complexes suggested that the dicopper-catalyzed 2H-azirine ring-opening and alkyne hydrogen activation are both thermodynamically feasible via a singlet/triplet crossing point. This explains why Et3N is critical for alkyne hydrogen transfer (HT) before the [3 + 2] cycloaddition reaction, and the C-N cross-coupling product instead of the click product (byproduct). Our DFT results indicate that the transmetalation process is the rate determination step along the triplet state potential energy surface. This study provides important mechanistic insights for the interrupted CuAAC reaction to form 5-enamine-fully-substituted-1,2,3-triazoles. Further insight prediction interprets that solvent and extra strong ligand coordination play a certain role in competitive reactions.
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Affiliation(s)
- Fan Yu
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Zhaoman Zhou
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Jiajia Song
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Yanying Zhao
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University Hangzhou 310018 China
- State Key Laboratory of Advanced Textiles Materials and Manufacture Technology, Ministry of Education, Zhejiang Sci-Tech University Hangzhou 310018 China
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19
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Zhang J, Hou C, Li W, Xu H, Zhao C. Study on C H amination reactions catalyzed by iron porphyrin nitrene complexs with different nitrogen sources. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.107787] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Carsch KM, DiMucci IM, Iovan DA, Li A, Zheng SL, Titus CJ, Lee SJ, Irwin KD, Nordlund D, Lancaster KM, Betley TA. Synthesis of a copper-supported triplet nitrene complex pertinent to copper-catalyzed amination. Science 2020; 365:1138-1143. [PMID: 31515388 DOI: 10.1126/science.aax4423] [Citation(s) in RCA: 96] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 05/29/2019] [Accepted: 08/13/2019] [Indexed: 01/17/2023]
Abstract
Terminal copper-nitrenoid complexes have inspired interest in their fundamental bonding structures as well as their putative intermediacy in catalytic nitrene-transfer reactions. Here, we report that aryl azides react with a copper(I) dinitrogen complex bearing a sterically encumbered dipyrrin ligand to produce terminal copper nitrene complexes with near-linear, short copper-nitrenoid bonds [1.745(2) to 1.759(2) angstroms]. X-ray absorption spectroscopy and quantum chemistry calculations reveal a predominantly triplet nitrene adduct bound to copper(I), as opposed to copper(II) or copper(III) assignments, indicating the absence of a copper-nitrogen multiple-bond character. Employing electron-deficient aryl azides renders the copper nitrene species competent for alkane amination and alkene aziridination, lending further credence to the intermediacy of this species in proposed nitrene-transfer mechanisms.
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Affiliation(s)
- Kurtis M Carsch
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA
| | - Ida M DiMucci
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, USA
| | - Diana A Iovan
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA
| | - Alex Li
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA
| | - Shao-Liang Zheng
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA
| | - Charles J Titus
- Department of Physics, Stanford University, Stanford, CA, USA
| | - Sang Jun Lee
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - Kent D Irwin
- Department of Physics, Stanford University, Stanford, CA, USA.,SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - Dennis Nordlund
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - Kyle M Lancaster
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, USA.
| | - Theodore A Betley
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA.
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21
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Rodríguez AM, Rodríguez MR, Díaz‐Requejo MM, Pérez PJ. Pyrrole Functionalization by Copper‐Catalyzed Nitrene Transfer Reactions. Isr J Chem 2020. [DOI: 10.1002/ijch.201900181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anabel M. Rodríguez
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC CIQSO-Centro de Investigación en Química Sostenible and Departamento de QuímicaUniversidad de Huelva 21007 - Huelva Spain
| | - Manuel R. Rodríguez
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC CIQSO-Centro de Investigación en Química Sostenible and Departamento de QuímicaUniversidad de Huelva 21007 - Huelva Spain
| | - M. Mar Díaz‐Requejo
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC CIQSO-Centro de Investigación en Química Sostenible and Departamento de QuímicaUniversidad de Huelva 21007 - Huelva Spain
| | - Pedro J. Pérez
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC CIQSO-Centro de Investigación en Química Sostenible and Departamento de QuímicaUniversidad de Huelva 21007 - Huelva Spain
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22
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Carsch KM, Lukens JT, DiMucci IM, Iovan DA, Zheng SL, Lancaster KM, Betley TA. Electronic Structures and Reactivity Profiles of Aryl Nitrenoid-Bridged Dicopper Complexes. J Am Chem Soc 2020; 142:2264-2276. [PMID: 31917556 PMCID: PMC7262786 DOI: 10.1021/jacs.9b09616] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Dicopper complexes templated by dinucleating, pacman dipyrrin ligand scaffolds (Mesdmx, tBudmx: dimethylxanthine-bridged, cofacial bis-dipyrrin) were synthesized by deprotonation/metalation with mesitylcopper (CuMes; Mes: mesityl) or by transmetalation with cuprous precursors from the corresponding deprotonated ligand. Neutral imide complexes (Rdmx)Cu2(μ2-NAr) (R: Mes, tBu; Ar: 4-MeOC6H4, 3,5-(F3C)2C6H3) were synthesized by treatment of the corresponding dicuprous complexes with aryl azides. While one-electron reduction of (Mesdmx)Cu2(μ2-N(C6H4OMe)) with potassium graphite initiates an intramolecular, benzylic C-H amination at room temperature, chemical reduction of (tBudmx)Cu2(μ2-NAr) leads to isolable [(tBudmx)Cu2(μ2-NAr)]- product salts. The electronic structures of the thermally robust [(tBudmx)Cu2(μ2-NAr)]0/- complexes were assessed by variable-temperature electron paramagnetic resonance spectroscopy, X-ray absorption spectroscopy (Cu L2,3/K-edge, N K-edge), optical spectroscopy, and DFT/CASSCF calculations. These data indicate that the formally Class IIIA mixed valence complexes of the type [(Rdmx)Cu2(μ2-NAr)]- feature significant NAr-localized spin following reduction from electronic population of the [Cu2(μ2-NAr)] π* manifold, contrasting previous methods for engendering iminyl character through chemical oxidation. The reactivity of the isolable imido and iminyl complexes are examined for prototypical radical-promoted reactivity (e.g., nitrene transfer and H-atom abstraction), where the divergent reactivity is rationalized by the relative degree of N-radical character afforded from different aryl substituents.
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Affiliation(s)
- Kurtis M. Carsch
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - James T. Lukens
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - Ida M. DiMucci
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - Diana A. Iovan
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Shao-Liang Zheng
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Kyle M. Lancaster
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - Theodore A. Betley
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
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23
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Kephart JA, Mitchell BS, Chirila A, Anderton KJ, Rogers D, Kaminsky W, Velian A. Atomically Defined Nanopropeller Fe 3Co 6Se 8(Ph 2PNTol) 6: Functional Model for the Electronic Metal-Support Interaction Effect and High Catalytic Activity for Carbodiimide Formation. J Am Chem Soc 2019; 141:19605-19610. [PMID: 31770487 DOI: 10.1021/jacs.9b12473] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Atomically defined interfaces that maximize the density of active sites and harness the electronic metal-support interaction are desirable to facilitate challenging multielectron transformations, but their synthesis remains a considerable challenge. We report the rational synthesis of the atomically defined metal chalcogenide nanopropeller Fe3Co6Se8L6 (L = Ph2PNTol) featuring three Fe edge sites, and its ensuing catalytic activity for carbodiimide formation. The complex interaction between the Fe edges and Co6Se8 support, including the interplay between oxidation state, substrate coordination, and metal-support interaction, is probed in detail using chemical and electrochemical methods, extensive single crystal X-ray diffraction, and electronic absorption and Mössbauer spectroscopy.
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Affiliation(s)
- Jonathan A Kephart
- Department of Chemistry , University of Washington , Seattle , Washington 98195 , United States
| | - Benjamin S Mitchell
- Department of Chemistry , University of Washington , Seattle , Washington 98195 , United States
| | - Andrei Chirila
- Department of Chemistry , University of Washington , Seattle , Washington 98195 , United States
| | - Kevin J Anderton
- Department of Chemistry and Chemical Biology , Harvard University , Cambridge , Massachusetts 02138 , United States
| | - Dylan Rogers
- Department of Chemistry , University of Washington , Seattle , Washington 98195 , United States
| | - Werner Kaminsky
- Department of Chemistry , University of Washington , Seattle , Washington 98195 , United States
| | - Alexandra Velian
- Department of Chemistry , University of Washington , Seattle , Washington 98195 , United States
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24
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Li Z, Xu S, Huang B, Yuan C, Chang W, Fu B, Jiao L, Wang P, Zhang Z. Pd-Catalyzed Carbonylation of Acyl Azides. J Org Chem 2019; 84:9497-9508. [PMID: 31268718 DOI: 10.1021/acs.joc.9b01048] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Pd-catalyzed reactions of azides with CO to access an isocynate intermediate have been developed extensively in recent years. However, the catalytic carbonylation of sensitive acyl azides has not been reported. Herein, we report a simple Pd-catalyzed carbonylation reaction of acyl azides with broad substrate scope, high efficiency, and simple operation under mild conditions, which provides facile access to acyl ureas. In addition, a mechanistic study was carried out by both experiment and DFT calculation. Control experiments and kinetic study revealed that the real active palladium species were Pd(0). The result of kinetic study suggested that palladium catalyst, azide, and CO were all involved in the turnover-limiting step except for amine. Further DFT study suggested that an unprecedented five-membered palladacycle intermediate was the key intermediate in the carbonylation reaction.
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Affiliation(s)
- Zongyang Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, and Department of Applied Chemistry , China Agricultural University , Beijing 100193 , China
| | - Shiyang Xu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, and Department of Applied Chemistry , China Agricultural University , Beijing 100193 , China
| | - Baoliang Huang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, and Department of Applied Chemistry , China Agricultural University , Beijing 100193 , China
| | - Chenhui Yuan
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, and Department of Applied Chemistry , China Agricultural University , Beijing 100193 , China
| | - Wenxu Chang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, and Department of Applied Chemistry , China Agricultural University , Beijing 100193 , China
| | - Bin Fu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, and Department of Applied Chemistry , China Agricultural University , Beijing 100193 , China
| | - Lei Jiao
- Center of Basic Molecular Science (CBMS), Department of Chemistry , Tsinghua University , Beijing 10084 , China
| | - Peng Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, and Department of Applied Chemistry , China Agricultural University , Beijing 100193 , China
| | - Zhenhua Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, and Department of Applied Chemistry , China Agricultural University , Beijing 100193 , China
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25
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Lei J, Yang Y, Peng L, Wu L, Peng P, Qiu R, Chen Y, Au C, Yin S. Copper‐Catalyzed Oxidative C(sp3)−H/N−H Cross‐Coupling of Hydrocarbons with P(O)−NH Compounds: the Accelerating Effect Induced by Carboxylic Acid Coproduct. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jian Lei
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, School of Materials Science and EngineeringHunan University Changsha 410082 People's Republic of China
| | - Yincai Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, School of Materials Science and EngineeringHunan University Changsha 410082 People's Republic of China
| | - Lingteng Peng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, School of Materials Science and EngineeringHunan University Changsha 410082 People's Republic of China
| | - Lesong Wu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, School of Materials Science and EngineeringHunan University Changsha 410082 People's Republic of China
| | - Ping Peng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, School of Materials Science and EngineeringHunan University Changsha 410082 People's Republic of China
| | - Renhua Qiu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, School of Materials Science and EngineeringHunan University Changsha 410082 People's Republic of China
| | - Yi Chen
- School of MedicineHunan University of Chinese Medicine Changsha 410208 People's Republic of China
| | - Chak‐Tong Au
- College of Chemistry and Chemical EngineeringHunan Institute of Engineering Xiangtan 411104, Hunan People's Republic of China
| | - Shuang‐Feng Yin
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, School of Materials Science and EngineeringHunan University Changsha 410082 People's Republic of China
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26
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Trammell R, Rajabimoghadam K, Garcia-Bosch I. Copper-Promoted Functionalization of Organic Molecules: from Biologically Relevant Cu/O 2 Model Systems to Organometallic Transformations. Chem Rev 2019; 119:2954-3031. [PMID: 30698952 DOI: 10.1021/acs.chemrev.8b00368] [Citation(s) in RCA: 157] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Copper is one of the most abundant and less toxic transition metals. Nature takes advantage of the bioavailability and rich redox chemistry of Cu to carry out oxygenase and oxidase organic transformations using O2 (or H2O2) as oxidant. Inspired by the reactivity of these Cu-dependent metalloenzymes, chemists have developed synthetic protocols to functionalize organic molecules under enviormentally benign conditions. Copper also promotes other transformations usually catalyzed by 4d and 5d transition metals (Pd, Pt, Rh, etc.) such as nitrene insertions or C-C and C-heteroatom coupling reactions. In this review, we summarized the most relevant research in which copper promotes or catalyzes the functionalization of organic molecules, including biological catalysis, bioinspired model systems, and organometallic reactivity. The reaction mechanisms by which these processes take place are discussed in detail.
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Affiliation(s)
- Rachel Trammell
- Department of Chemistry , Southern Methodist University , Dallas , Texas 75275 , United States
| | | | - Isaac Garcia-Bosch
- Department of Chemistry , Southern Methodist University , Dallas , Texas 75275 , United States
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27
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Hazarika D, Borah AJ, Phukan P. Facile, catalyst-free cascade synthesis of sulfonyl guanidinesviacarbodiimide coupling with amines. Chem Commun (Camb) 2019; 55:1418-1421. [DOI: 10.1039/c8cc08564a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile, catalyst-free cascade synthesis of sulfonyl guanidinesviacarbodiimide intermediate coupling with amines at room temperature has been disclosed.
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Affiliation(s)
- Debojit Hazarika
- Department of Chemistry
- Gauhati University
- Gopinath Bordoloi Nagar
- Guwahati-781014
- India
| | - Arun Jyoti Borah
- Department of Chemistry
- Gauhati University
- Gopinath Bordoloi Nagar
- Guwahati-781014
- India
| | - Prodeep Phukan
- Department of Chemistry
- Gauhati University
- Gopinath Bordoloi Nagar
- Guwahati-781014
- India
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28
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Moegling J, Hoffmann A, Thomas F, Orth N, Liebhäuser P, Herber U, Rampmaier R, Stanek J, Fink G, Ivanović-Burmazović I, Herres-Pawlis S. Designed To React: Terminal Copper Nitrenes and Their Application in Catalytic C-H Aminations. Angew Chem Int Ed Engl 2018; 57:9154-9159. [PMID: 29734490 DOI: 10.1002/anie.201713171] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 03/10/2018] [Indexed: 12/11/2022]
Abstract
Heteroscorpionate ligands of the bis(pyrazolyl)methane family have been applied in the stabilisation of terminal copper tosyl nitrenes. These species are highly active intermediates in the copper-catalysed direct C-H amination and nitrene transfer. Novel perfluoroalkyl-pyrazolyl- and pyridinyl-containing ligands were synthesized to coordinate to a reactive copper nitrene centre. Four distinct copper tosyl nitrenes were prepared at low temperatures by the reaction with SO2 tBuPhINTs and copper(I) acetonitrile complexes. Their stoichiometric reactivity has been elucidated regarding the imination of phosphines and the aziridination of styrenes. The formation and thermal decay of the copper nitrenes were investigated by UV/Vis spectroscopy of the highly coloured species. Additionally, the compounds were studied by cryo-UHR-ESI mass spectrometry and DFT calculations. In addition, a mild catalytic procedure has been developed where the copper nitrene precursors enable the C-H amination of cyclohexane and toluene and the aziridination of styrenes.
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Affiliation(s)
- Julian Moegling
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Alexander Hoffmann
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Fabian Thomas
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Nicole Orth
- Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058, Erlangen, Germany
| | - Patricia Liebhäuser
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Ulrich Herber
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Robert Rampmaier
- Department für Chemie und Pharmazie, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, 81377, München, Germany
| | - Julia Stanek
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Gerhard Fink
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Ivana Ivanović-Burmazović
- Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058, Erlangen, Germany
| | - Sonja Herres-Pawlis
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
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29
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Cheng J, Wang L, Wang P, Deng L. High-Oxidation-State 3d Metal (Ti-Cu) Complexes with N-Heterocyclic Carbene Ligation. Chem Rev 2018; 118:9930-9987. [PMID: 30011189 DOI: 10.1021/acs.chemrev.8b00096] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
High-oxidation-state 3d metal species have found a wide range of applications in modern synthetic chemistry and materials science. They are also implicated as key reactive species in biological reactions. These applications have thus prompted explorations of their formation, structure, and properties. While the traditional wisdom regarding these species was gained mainly from complexes supported by nitrogen- and oxygen-donor ligands, recent studies with N-heterocyclic carbenes (NHCs), which are widely used for the preparation of low-oxidation-state transition metal complexes in organometallic chemistry, have led to the preparation of a large variety of isolable high-oxidation-state 3d metal complexes with NHC ligation. Since the first report in this area in the 1990s, isolable complexes of this type have been reported for titanium(IV), vanadium(IV,V), chromium(IV,V), manganese(IV,V), iron(III,IV,V), cobalt(III,IV,V), nickel(IV), and copper(II). With the aim of providing an overview of this intriguing field, this Review summarizes our current understanding of the synthetic methods, structure and spectroscopic features, reactivity, and catalytic applications of high-oxidation-state 3d metal NHC complexes of titanium to copper. In addition to this progress, factors affecting the stability and reactivity of high-oxidation-state 3d metal NHC species are also presented, as well as perspectives on future efforts.
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Affiliation(s)
- Jun Cheng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , People's Republic of China
| | - Lijun Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , People's Republic of China
| | - Peng Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , People's Republic of China
| | - Liang Deng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , People's Republic of China
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30
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Moegling J, Hoffmann A, Thomas F, Orth N, Liebhäuser P, Herber U, Rampmaier R, Stanek J, Fink G, Ivanović-Burmazović I, Herres-Pawlis S. Maßgeschneiderte terminale Kupfernitrene für katalytische C-H-Aminierungen. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201713171] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Julian Moegling
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Deutschland
| | - Alexander Hoffmann
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Deutschland
| | - Fabian Thomas
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Deutschland
| | - Nicole Orth
- Department Chemie und Pharmazie; Friedrich-Alexander-Universität Erlangen-Nürnberg; Egerlandstraße 1 91058 Erlangen Deutschland
| | - Patricia Liebhäuser
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Deutschland
| | - Ulrich Herber
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Deutschland
| | - Robert Rampmaier
- Department für Chemie und Pharmazie; Ludwig-Maximilians-Universität München; Butenandtstraße 5-13 81377 München Deutschland
| | - Julia Stanek
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Deutschland
| | - Gerhard Fink
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Deutschland
| | - Ivana Ivanović-Burmazović
- Department Chemie und Pharmazie; Friedrich-Alexander-Universität Erlangen-Nürnberg; Egerlandstraße 1 91058 Erlangen Deutschland
| | - Sonja Herres-Pawlis
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Deutschland
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31
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Zelenay B, Besora M, Monasterio Z, Ventura-Espinosa D, White AJP, Maseras F, Díez-González S. Copper-mediated reduction of azides under seemingly oxidising conditions: catalytic and computational studies. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00515j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The reduction of aryl azides in the presence of water and air and without an obvious reducing agent is reported.
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Affiliation(s)
- Benjamin Zelenay
- Department of Chemistry
- Imperial College London
- SW7 2AZ London
- UK
- Institute of Chemical Research of Catalonia (ICIQ)
| | - Maria Besora
- Institute of Chemical Research of Catalonia (ICIQ)
- The Barcelona Institute of Science and Technology
- 43007 Tarragona
- Spain
| | | | | | | | - Feliu Maseras
- Institute of Chemical Research of Catalonia (ICIQ)
- The Barcelona Institute of Science and Technology
- 43007 Tarragona
- Spain
- Departament de Química
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32
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Bakhoda A(G, Jiang Q, Bertke JA, Cundari TR, Warren TH. Elusive Terminal Copper Arylnitrene Intermediates. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611275] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - Quan Jiang
- Department of Chemistry Center for Advanced Scientific Computing and Modeling (CASCaM) University of North Texas Denton TX 76203 USA
| | - Jeffery A. Bertke
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057- 1227 USA
| | - Thomas R. Cundari
- Department of Chemistry Center for Advanced Scientific Computing and Modeling (CASCaM) University of North Texas Denton TX 76203 USA
| | - Timothy H. Warren
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057- 1227 USA
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33
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Bakhoda A(G, Jiang Q, Bertke JA, Cundari TR, Warren TH. Elusive Terminal Copper Arylnitrene Intermediates. Angew Chem Int Ed Engl 2017; 56:6426-6430. [DOI: 10.1002/anie.201611275] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 03/29/2017] [Indexed: 12/31/2022]
Affiliation(s)
| | - Quan Jiang
- Department of Chemistry Center for Advanced Scientific Computing and Modeling (CASCaM) University of North Texas Denton TX 76203 USA
| | - Jeffery A. Bertke
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057- 1227 USA
| | - Thomas R. Cundari
- Department of Chemistry Center for Advanced Scientific Computing and Modeling (CASCaM) University of North Texas Denton TX 76203 USA
| | - Timothy H. Warren
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057- 1227 USA
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34
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Weatherly C, Alderson JM, Berry JF, Hein JE, Schomaker JM. Catalyst-Controlled Nitrene Transfer by Tuning Metal:Ligand Ratios: Insight into the Mechanisms of Chemoselectivity. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00190] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cale Weatherly
- Department
of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Juliet M. Alderson
- Department
of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - John F. Berry
- Department
of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Jason E. Hein
- Department
of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Jennifer M. Schomaker
- Department
of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
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35
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Mazumdar W, Jana N, Thurman BT, Wink DJ, Driver TG. Rh 2(II)-Catalyzed Ring Expansion of Cyclobutanol-Substituted Aryl Azides To Access Medium-Sized N-Heterocycles. J Am Chem Soc 2017; 139:5031-5034. [PMID: 28355068 DOI: 10.1021/jacs.7b01833] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new reactivity pattern of Rh2(II)-N-arylnitrenes was discovered that facilitates the synthesis of medium-sized N-heterocycles from ortho-cyclobutanol-substituted aryl azides. The key ring-expansion step of the catalytic cycle is both chemoselective and stereospecific. Our mechanistic experiments implicate the formation of a rhodium N-arylnitrene catalytic intermediate and reveal that sp3 C-H bond amination of this electrophilic species is competitive with the ring-expansion process.
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Affiliation(s)
- Wrickban Mazumdar
- Department of Chemistry, University of Illinois at Chicago , 845 West Taylor Street, Chicago, Illinois 60607-7061, United States
| | - Navendu Jana
- Department of Chemistry, University of Illinois at Chicago , 845 West Taylor Street, Chicago, Illinois 60607-7061, United States
| | - Bryant T Thurman
- Department of Chemistry, University of Illinois at Chicago , 845 West Taylor Street, Chicago, Illinois 60607-7061, United States
| | - Donald J Wink
- Department of Chemistry, University of Illinois at Chicago , 845 West Taylor Street, Chicago, Illinois 60607-7061, United States
| | - Tom G Driver
- Department of Chemistry, University of Illinois at Chicago , 845 West Taylor Street, Chicago, Illinois 60607-7061, United States.,Institute of Next Generation Matter Transformation, College of Chemical Engineering, Huaqiao University , 668 Jimei Boulevard, Xiamen, Fujian 361021, People's Republic of China
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36
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Hicken A, White AJP, Crimmin MR. Reversible Coordination of Boron–, Aluminum–, Zinc–, Magnesium–, and Calcium–Hydrogen Bonds to Bent {CuL2} Fragments: Heavy σ Complexes of the Lightest Coinage Metal. Inorg Chem 2017; 56:8669-8682. [DOI: 10.1021/acs.inorgchem.7b00182] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Alexandra Hicken
- SSCP
DTP, Grantham Institute, and ‡Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K
| | - Andrew J. P. White
- SSCP
DTP, Grantham Institute, and ‡Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K
| | - Mark R. Crimmin
- SSCP
DTP, Grantham Institute, and ‡Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K
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37
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Chuang WJ, Hsu SP, Chand K, Yu FL, Tsai CL, Tseng YH, Lu YH, Kuo JY, Carey JR, Chen HY, Chen HY, Chiang MY, Hsu SCN. Reactivity Study of Unsymmetrical β-Diketiminato Copper(I) Complexes: Effect of the Chelating Ring. Inorg Chem 2017; 56:2722-2735. [PMID: 28225607 DOI: 10.1021/acs.inorgchem.6b02876] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
β-Diketiminato copper(I) complexes play important roles in bioinspired catalytic chemistry and in applications to the materials industry. However, it has been observed that these complexes are very susceptible to disproportionation. Coordinating solvents or Lewis bases are typically used to prevent disproportionation and to block the coordination sites of the copper(I) center from further decomposition. Here, we incorporate this coordination protection directly into the molecule in order to increase the stability and reactivity of these complexes and to discover new copper(I) binding motifs. Here we describe the synthesis, structural characterization, and reactivity of a series of unsymmetrical N-aryl-N'-alkylpyridyl β-diketiminato copper(I) complexes and discuss the structures and reactivity of these complexes with respect to the length of the pyridyl arm. All of the aforementioned unsymmetrical ß-diketiminato copper(I) complexes bind CO reversibly and are stable to disproportionation. The binding ability of CO and the rate of pyridyl ligand decoordination of these copper(I) complexes are directly related to the competition between the degree of puckering of the chelate system and the steric demands of the N-aryl substituent.
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Affiliation(s)
- Wan-Jung Chuang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University , Kaohsiung 807, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital , Kaohsiung 807, Taiwan
| | - Sung-Po Hsu
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University , Taipei 110, Taiwan.,Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University , Taipei 110, Taiwan
| | - Kuldeep Chand
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University , Kaohsiung 807, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital , Kaohsiung 807, Taiwan
| | - Fu-Lun Yu
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University , Kaohsiung 807, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital , Kaohsiung 807, Taiwan
| | - Cheng-Long Tsai
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University , Kaohsiung 807, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital , Kaohsiung 807, Taiwan
| | - Yu-Hsuan Tseng
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University , Kaohsiung 807, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital , Kaohsiung 807, Taiwan
| | - Yuh-Hsiu Lu
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University , Kaohsiung 807, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital , Kaohsiung 807, Taiwan
| | - Jen-Yu Kuo
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University , Kaohsiung 807, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital , Kaohsiung 807, Taiwan
| | - James R Carey
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University , Kaohsiung 807, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital , Kaohsiung 807, Taiwan.,Department of Applied Chemistry, National University of Kaohsiung , Kaohsiung 804, Taiwan
| | - Hsuan-Ying Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University , Kaohsiung 807, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital , Kaohsiung 807, Taiwan
| | - Hsing-Yin Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University , Kaohsiung 807, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital , Kaohsiung 807, Taiwan
| | - Michael Y Chiang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University , Kaohsiung 807, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital , Kaohsiung 807, Taiwan.,Department of Chemistry, National Sun Yat-Sen University , Kaohsiung 804, Taiwan
| | - Sodio C N Hsu
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University , Kaohsiung 807, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital , Kaohsiung 807, Taiwan
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38
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Phanopoulos A, Warren M, White AJP, Horton A, Crimmin MR. Isolation of an unusual [Cu 6] nanocluster through sequential addition of copper(i) to a polynucleating ligand. Dalton Trans 2017; 46:2077-2080. [PMID: 28133681 DOI: 10.1039/c6dt04703c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Addition of 2 equiv. of CuI to a [Cu]4 multimetallic complex results in cluster formation leading to the isolation of a rare bicapped tetrahedral [Cu6I2] cluster that is stabilised by two conformationally constrained polynucleating ligands.
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Affiliation(s)
- Andreas Phanopoulos
- Department of Chemistry, Imperial College London, South Kensington, London, SW7 2AZ, UK.
| | - Mark Warren
- Diamond Light Source Ltd, Diamond House, Harwell Science & Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK
| | - Andrew J P White
- Department of Chemistry, Imperial College London, South Kensington, London, SW7 2AZ, UK.
| | - Andrew Horton
- PTI/DX Emerging Technologies, Shell Global Solutions International B.V, P.O. Box 38000, 1030 BN Amsterdam, The Netherlands
| | - Mark R Crimmin
- Department of Chemistry, Imperial College London, South Kensington, London, SW7 2AZ, UK.
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39
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Phanopoulos A, Leung AHM, Yow S, Palomas D, White AJP, Hellgardt K, Horton A, Crimmin MR. Binuclear β-diketiminate complexes of copper(i). Dalton Trans 2017; 46:2081-2090. [DOI: 10.1039/c6dt04246e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The reaction of a series of dinucleating bis(β-diketiminate) pro-ligands with mesitylcopper in the presence and absence of mono and diphosphines has allowed the isolation of a new series of dicopper(i) complexes.
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Affiliation(s)
| | | | - Shuhui Yow
- Department of Chemistry
- Imperial College London
- London
- UK
| | - David Palomas
- Department of Chemistry
- Imperial College London
- London
- UK
| | | | - Klaus Hellgardt
- Department of Chemical Engineering
- Imperial College London
- London
- UK
| | - Andrew Horton
- PTI/DX Emerging Technologies
- Shell Global Solutions International B.V
- 1030 BN Amsterdam
- The Netherlands
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40
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Affiliation(s)
- Ian G. Powers
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Christopher Uyeda
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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41
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Corona T, Ribas L, Rovira M, Farquhar ER, Ribas X, Ray K, Company A. Characterization and Reactivity Studies of a Terminal Copper-Nitrene Species. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607238] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Teresa Corona
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT); Institut de Química Computacional i Catàlisi (IQCC); Departament de Química; Universitat de Girona; Campus Montilivi, E 17003 Girona Catalonia Spain
| | - Lídia Ribas
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT); Institut de Química Computacional i Catàlisi (IQCC); Departament de Química; Universitat de Girona; Campus Montilivi, E 17003 Girona Catalonia Spain
| | - Mireia Rovira
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT); Institut de Química Computacional i Catàlisi (IQCC); Departament de Química; Universitat de Girona; Campus Montilivi, E 17003 Girona Catalonia Spain
| | - Erik R. Farquhar
- Case Western Reserve University Center for Synchrotron Biosciences and Center for Proteomics and Bioinformatics; National Synchrotron Light Source II; Brookhaven National Laboratory Upton New York 11973 USA
| | - Xavi Ribas
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT); Institut de Química Computacional i Catàlisi (IQCC); Departament de Química; Universitat de Girona; Campus Montilivi, E 17003 Girona Catalonia Spain
| | - Kallol Ray
- Department of Chemistry; Humboldt Universität zu Berlin; Brook-Taylor Strasse 2 12489 Berlin Germany
| | - Anna Company
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT); Institut de Química Computacional i Catàlisi (IQCC); Departament de Química; Universitat de Girona; Campus Montilivi, E 17003 Girona Catalonia Spain
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42
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Corona T, Ribas L, Rovira M, Farquhar ER, Ribas X, Ray K, Company A. Characterization and Reactivity Studies of a Terminal Copper-Nitrene Species. Angew Chem Int Ed Engl 2016; 55:14005-14008. [PMID: 27723252 DOI: 10.1002/anie.201607238] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Indexed: 11/11/2022]
Abstract
High-valent terminal copper-nitrene species have been postulated as key intermediates in copper-catalyzed aziridination and amination reactions. The high reactivity of these intermediates has prevented their characterization for decades, thereby making the mechanisms ambiguous. Very recently, the Lewis acid adduct of a copper-nitrene intermediate was trapped at -90 °C and shown to be active in various oxidation reactions. Herein, we describe for the first time the synthesis and spectroscopic characterization of a terminal copper(II)-nitrene radical species that is stable at room temperature in the absence of any Lewis acid. The azide derivative of a triazamacrocyclic ligand that had previously been utilized in the stabilization of aryl-CuIII intermediates was employed as an ancillary ligand in the study. The terminal copper(II)-nitrene radical species is able to transfer a nitrene moiety to phosphines and abstract a hydrogen atom from weak C-H bonds, leading to the formation of oxidized products in modest yields.
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Affiliation(s)
- Teresa Corona
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT), Institut de Química Computacional i Catàlisi (IQCC), Departament de Química, Universitat de Girona, Campus Montilivi, E, 17003, Girona, Catalonia, Spain
| | - Lídia Ribas
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT), Institut de Química Computacional i Catàlisi (IQCC), Departament de Química, Universitat de Girona, Campus Montilivi, E, 17003, Girona, Catalonia, Spain
| | - Mireia Rovira
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT), Institut de Química Computacional i Catàlisi (IQCC), Departament de Química, Universitat de Girona, Campus Montilivi, E, 17003, Girona, Catalonia, Spain
| | - Erik R Farquhar
- Case Western Reserve University Center for Synchrotron Biosciences and Center for Proteomics and Bioinformatics, National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York, 11973, USA
| | - Xavi Ribas
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT), Institut de Química Computacional i Catàlisi (IQCC), Departament de Química, Universitat de Girona, Campus Montilivi, E, 17003, Girona, Catalonia, Spain.
| | - Kallol Ray
- Department of Chemistry, Humboldt Universität zu Berlin, Brook-Taylor Strasse 2, 12489, Berlin, Germany.
| | - Anna Company
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT), Institut de Química Computacional i Catàlisi (IQCC), Departament de Química, Universitat de Girona, Campus Montilivi, E, 17003, Girona, Catalonia, Spain.
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43
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Zhang S, Fallah H, Gardner EJ, Kundu S, Bertke JA, Cundari TR, Warren TH. A Dinitrogen Dicopper(I) Complex via a Mixed‐Valence Dicopper Hydride. Angew Chem Int Ed Engl 2016; 55:9927-31. [DOI: 10.1002/anie.201603970] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Revised: 06/14/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Shiyu Zhang
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Hengameh Fallah
- Department of Chemistry, Center for Advanced Scientific Computing and Modeling (CASCaM) University of North Texas Denton TX 76203 USA
| | - Evan J. Gardner
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Subrata Kundu
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Jeffery A. Bertke
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Thomas R. Cundari
- Department of Chemistry, Center for Advanced Scientific Computing and Modeling (CASCaM) University of North Texas Denton TX 76203 USA
| | - Timothy H. Warren
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
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44
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Zhang S, Fallah H, Gardner EJ, Kundu S, Bertke JA, Cundari TR, Warren TH. A Dinitrogen Dicopper(I) Complex via a Mixed‐Valence Dicopper Hydride. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603970] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shiyu Zhang
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Hengameh Fallah
- Department of Chemistry, Center for Advanced Scientific Computing and Modeling (CASCaM) University of North Texas Denton TX 76203 USA
| | - Evan J. Gardner
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Subrata Kundu
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Jeffery A. Bertke
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Thomas R. Cundari
- Department of Chemistry, Center for Advanced Scientific Computing and Modeling (CASCaM) University of North Texas Denton TX 76203 USA
| | - Timothy H. Warren
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
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45
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First row transition metal complexes of di-o-substituted-diarylamine-based ligands (including carbazoles, acridines and dibenzoazepines). Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.02.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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46
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Stavropoulos P. Metal-Catalyzed and Metal-Free Intermolecular Amination of Light Alkanes and Benzenes. COMMENT INORG CHEM 2016; 37:1-57. [PMID: 28855744 DOI: 10.1080/02603594.2016.1183487] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Pericles Stavropoulos
- Missouri University of Science and Technology, Department of Chemistry, 400 W11th St., Rolla, MO 65409
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47
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Tokumasu K, Yazaki R, Ohshima T. Direct Catalytic Chemoselective α-Amination of Acylpyrazoles: A Concise Route to Unnatural α-Amino Acid Derivatives. J Am Chem Soc 2016; 138:2664-9. [DOI: 10.1021/jacs.5b11773] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Keisuke Tokumasu
- Graduate School of Pharmaceutical
Sciences, Kyushu University, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Ryo Yazaki
- Graduate School of Pharmaceutical
Sciences, Kyushu University, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Takashi Ohshima
- Graduate School of Pharmaceutical
Sciences, Kyushu University, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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48
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Iovan DA, Betley TA. Characterization of Iron-Imido Species Relevant for N-Group Transfer Chemistry. J Am Chem Soc 2016; 138:1983-93. [PMID: 26788747 DOI: 10.1021/jacs.5b12582] [Citation(s) in RCA: 135] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A sterically accessible tert-butyl-substituted dipyrrinato di-iron(II) complex [((tBu)L)FeCl]2 possessing two bridging chloride atoms was synthesized from the previously reported solvento adduct. Upon treatment with aryl azides, the formation of high-spin Fe(III) species was confirmed by (57)Fe Mössbauer spectroscopy. Crystallographic characterization revealed two possible oxidation products: (1) a terminal iron iminyl from aryl azides bearing ortho isopropyl substituents, ((tBu)L)FeCl((•)NC6H3-2,6-(i)Pr2); or (2) a bridging di-iron imido arising from reaction with 3,5-bis(trifluoromethyl)aryl azide, [((tBu)L)FeCl]2(μ-NC6H3-3,5-(CF3)2). Similar to the previously reported ((Ar)L)FeCl((•)NC6H4-4-(t)Bu), the monomeric iron imido is best described as a high-spin Fe(III) antiferromagnetically coupled to an iminyl radical, affording an S = 2 spin state as confirmed by SQUID magnetometry. The di-iron imido possesses an S = 0 ground state, arising from two high-spin Fe(III) centers weakly antiferromagnetically coupled through the bridging imido ligand. The terminal iron iminyl complex undergoes facile decomposition via intra- or intermolecular hydrogen-atom abstraction (HAA) from an imido aryl ortho isopropyl group, or from 1,4-cyclohexadiene, respectively. The bridging di-iron imido is a competent N-group transfer reagent to cyclic internal olefins as well as styrene. Although solid-state magnetometry indicates an antiferromagnetic interaction between the two iron centers (J = -108.7 cm(-1)) in [((tBu)L)FeCl]2(μ-NC6H3-3,5-(CF3)2), we demonstrate that in solution the bridging imido can facilitate HAA as well as dissociate into a terminal iminyl species, which then can promote HAA. In situ monitoring reveals the di-iron bridging imido is a catalytically competent intermediate, one of several iron complexes observed in the amination of C-H bond substrates or styrene aziridination.
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Affiliation(s)
- Diana A Iovan
- Department of Chemistry and Chemical Biology, Harvard University , 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Theodore A Betley
- Department of Chemistry and Chemical Biology, Harvard University , 12 Oxford Street, Cambridge, Massachusetts 02138, United States
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Yu M, Zhang Q, Li G, Yuan J, Zhang N, Zhang R, Liang Y, Dong D. Copper-Nitrene Triggered Annulation of α-Acyl Cinnamides: Access to Isoxazol-3(2H
)-ones. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500990] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Hohloch S, Kriegel BM, Bergman RG, Arnold J. Group 5 chemistry supported by β-diketiminate ligands. Dalton Trans 2016; 45:15725-15745. [DOI: 10.1039/c6dt01770c] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
β-Diketiminate (BDI) ligands are widely used supporting ligands in modern organometallic chemistry and are capable of stabilizing various metal complexes in multiple oxidation states and coordination environments.
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Affiliation(s)
| | | | | | - John Arnold
- Department of Chemistry
- University of California
- Berkeley
- USA
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