1
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Zurakowski JA, Durfy CS, Stocek NB, Fanchini G, Drover MW. Oxidatively-induced C(sp 3)-C(sp 3) bond formation at a tucked-in iron(iii) complex. Chem Sci 2024; 15:10359-10365. [PMID: 38994411 PMCID: PMC11234878 DOI: 10.1039/d4sc03292f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Accepted: 06/06/2024] [Indexed: 07/13/2024] Open
Abstract
Carbon-carbon (C-C) bond formation is a cornerstone of synthetic chemistry, relying on routes such as transition-metal mediated cross-coupling for the introduction of new carbon-based functionality. For {[M] n+-C} (M = metal) structural units, studies that offer well-defined relationships between metal oxidation state, hydrocarbon strain, and {[M] n+-C} bond thermochemistry are thus informative, providing a means to reliably access new product classes. Here, we show that one-electron oxidation of the iron tucked-in complex [(η6-C5Me4[double bond, length as m-dash]CH2)Fe(dnppe)] (dnppe = 1,2-bis(di-n-propylphosphino)ethane) results in C(sp3)-C(sp3) bond formation giving unique {Fe2} dimers. Freeze-quenched CW X-band EPR spectroscopy allowed for spectroscopic identification of the reactive [(η6-C5Me4[double bond, length as m-dash]CH2)Fe(dnppe)]+ intermediate. Density functional theory (DFT) calculations reveal a primarily Fe-centered radical and a weak {[Fe]-C} bond (BDE[Fe]-C = 24.5 kcal mol-1, c.f. BDEC-C(ethane) = 90 kcal mol-1). For comparison, a structurally analogous Fe(iii) methyl complex was prepared, [Cp*Fe(dnppe)(CH3)]+ (Cp* = C5Me5 -), where C(sp3)-C(sp3) coupling was not observed, consistent with a larger calculated BDE[Fe]-C value of 47.8 kcal mol-1. These data are analogized to the simple hydrocarbons ethane and cyclopropane, where a strain-induced BDEC-C decrease of 33 kcal mol-1 is witnessed on cyclization.
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Affiliation(s)
- Joseph A Zurakowski
- Department of Chemistry, Western University 1151 Richmond Street London ON N8K 3G6 Canada
- Department of Chemistry and Biochemistry, University of Windsor 401 Sunset Avenue Windsor ON N9B 3P4 Canada
| | - Connor S Durfy
- Department of Chemistry, Western University 1151 Richmond Street London ON N8K 3G6 Canada
| | - Noah B Stocek
- Department of Physics and Astronomy, Western University 1151 Richmond Street London ON N6A 3K7 Canada
| | - Giovanni Fanchini
- Department of Chemistry, Western University 1151 Richmond Street London ON N8K 3G6 Canada
- Department of Physics and Astronomy, Western University 1151 Richmond Street London ON N6A 3K7 Canada
| | - Marcus W Drover
- Department of Chemistry, Western University 1151 Richmond Street London ON N8K 3G6 Canada
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2
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Concha-Puelles M, Torres-González S, Robles-Henríquez R, Lühr S. Ruthenium-Catalyzed Selective Mono N-Ethylation of Arylamines and Tandem Reduction/ N-Ethylation of Nitroarenes Using Triethylamine and Formic Acid. J Org Chem 2024; 89:8773-8781. [PMID: 38822797 DOI: 10.1021/acs.joc.4c00673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2024]
Abstract
The mono N-alkylation of arylamines using alkylamines as alkyl group donors has been scarcely investigated. In this work, we report the mono N-alkylation of several arylamines (52-95%) catalyzed by the complex ruthenium-triphos in the presence of Al(OTf)3. Moreover, the highly reductant ability of the catalyst system allows the tandem reduction/N-alkylation of nitrobenzenes in good yields (up to 80%). In addition, the catalyst can be recycled after three reaction cycles without loss of catalyst activity.
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Affiliation(s)
- MatíAs Concha-Puelles
- Faculty of Sciences, Department of Chemistry, University of Chile, Las Palmeras 3425, Ñuñoa, Santiago 775000, Chile
| | - Simón Torres-González
- Faculty of Sciences, Department of Chemistry, University of Chile, Las Palmeras 3425, Ñuñoa, Santiago 775000, Chile
| | - Ramiro Robles-Henríquez
- Faculty of Sciences, Department of Chemistry, University of Chile, Las Palmeras 3425, Ñuñoa, Santiago 775000, Chile
| | - Susan Lühr
- Faculty of Sciences, Department of Chemistry, University of Chile, Las Palmeras 3425, Ñuñoa, Santiago 775000, Chile
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3
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Tseng CC, Ding YW, Chen ZY, Lan HY, Li HJ, Cheng YS, Kuo TS, Chen PL, Wu WC, Shi FK, Yang T, Liu HJ. A Bis-Cyclopentadienyl Ligand-Supported Di-Iron Trihydride Motif as a Synthon for Access to Heterobimetallic Trinuclear Complexes. Inorg Chem 2024; 63:11361-11368. [PMID: 38815165 PMCID: PMC11190976 DOI: 10.1021/acs.inorgchem.4c01420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 05/14/2024] [Accepted: 05/17/2024] [Indexed: 06/01/2024]
Abstract
Herein, we report the synthesis of a flexible bis-cyclopentadienyl ligand L (the doubly deprotonated form of H2L (1,3-bis(2,4-di-tert-butylcyclopentadienyldimethylsilyl)benzene)), demonstrating its ability to stabilize a series of di-iron hydrido complexes. Notably, this ligand facilitates the isolation of an unprecedented anionic cyclopentadienyl ligand-supported di-iron trihydride complex, LFe2(μ-H)3Li(THF) (2), functioning as a synthon for the [Fe2(μ-H)3]- core and providing access to heterobimetallic complexes 4-6 with coinage metals.
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Affiliation(s)
- Chung-Ching Tseng
- Department
of Applied Chemistry, National Yang Ming
Chiao Tung University, 1001 Daxue Rd, East District, Hsinchu City 300093, Taiwan
| | - Yi-Wun Ding
- Department
of Applied Chemistry, National Yang Ming
Chiao Tung University, 1001 Daxue Rd, East District, Hsinchu City 300093, Taiwan
| | - Zhong-Yue Chen
- Department
of Applied Chemistry, National Yang Ming
Chiao Tung University, 1001 Daxue Rd, East District, Hsinchu City 300093, Taiwan
| | - Hao-Yuan Lan
- Department
of Applied Chemistry, National Yang Ming
Chiao Tung University, 1001 Daxue Rd, East District, Hsinchu City 300093, Taiwan
| | - Han-Jung Li
- Department
of Applied Chemistry, National Yang Ming
Chiao Tung University, 1001 Daxue Rd, East District, Hsinchu City 300093, Taiwan
| | - You-Song Cheng
- Department
of Applied Chemistry, National Yang Ming
Chiao Tung University, 1001 Daxue Rd, East District, Hsinchu City 300093, Taiwan
| | - Ting-Shen Kuo
- Department
of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Pei-Lin Chen
- Department
of Chemistry, National Tsing Hua University, Hsinchu City 300044, Taiwan
| | - Wen-Chun Wu
- Rezwave
Technology Inc., 3F-5,
79, Hsin Tai Wu Rd., Sec.1, HsiChih District, New Taipei City 221432, Taiwan
| | - Fong-Ku Shi
- Rezwave
Technology Inc., 3F-5,
79, Hsin Tai Wu Rd., Sec.1, HsiChih District, New Taipei City 221432, Taiwan
| | - Tzuhsiung Yang
- Department
of Chemistry, National Tsing Hua University, Hsinchu City 300044, Taiwan
| | - Hsueh-Ju Liu
- Department
of Applied Chemistry, National Yang Ming
Chiao Tung University, 1001 Daxue Rd, East District, Hsinchu City 300093, Taiwan
- Center
for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, 1001 Daxue Rd, East District, Hsinchu City 300093, Taiwan
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4
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Murugan K, Vijayapritha S, Kavitha V, Viswanathamurthi P. Versatile formation of Ru(II) hydrazone complexes: Structure, theoretical studies and catalytic activity in α-alkylation. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114737] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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5
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Rong MK, Chirila A, Franciolus D, Lutz M, Nieger M, Ehlers AW, Slootweg JC, Lammertsma K. Protic NHC Iridium Complexes with β-H Reactivity–Synthesis, Acetonitrile Insertion, and Oxidative Self-Activation. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00584] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mark K. Rong
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Andrei Chirila
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - David Franciolus
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Martin Lutz
- Crystal and Structural Chemistry, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Martin Nieger
- Department of Chemistry, University of Helsinki, A. I. Virtasen aukio 1, P.O. Box 55, Helsinki, Finland
| | - Andreas W. Ehlers
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
- Department of Chemistry, Oakland Park 2006University of Johannesburg, Johannesburg 2006, South Africa
| | - J. Chris Slootweg
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Koop Lammertsma
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
- Department of Chemistry, Oakland Park 2006University of Johannesburg, Johannesburg 2006, South Africa
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6
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Deng D, Hu B, Zhang Z, Mo S, Yang M, Chen D. Alkylation of Aromatic Amines with Trialkyl Amines Catalyzed by a Defined Iridium Complex with a 2-Hydroxypyridylmethylene Fragment. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00172] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Danfeng Deng
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemical Engineering & Technology, Harbin Institute of Technology, Harbin 150001, PR China
| | - Bowen Hu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemical Engineering & Technology, Harbin Institute of Technology, Harbin 150001, PR China
| | - Ziyu Zhang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemical Engineering & Technology, Harbin Institute of Technology, Harbin 150001, PR China
| | - Shengkai Mo
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemical Engineering & Technology, Harbin Institute of Technology, Harbin 150001, PR China
| | - Min Yang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemical Engineering & Technology, Harbin Institute of Technology, Harbin 150001, PR China
| | - Dafa Chen
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemical Engineering & Technology, Harbin Institute of Technology, Harbin 150001, PR China
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7
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8
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Wang D, Zhao K, Ma P, Xu C, Ding Y. Direct α-alkylation of ketones with primary alcohols catalyzed by iridium–CNP complex. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.11.034] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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Wang D, Zhao K, Xu C, Miao H, Ding Y. Synthesis, Structures of Benzoxazolyl Iridium(III) Complexes, and Applications on C–C and C–N Bond Formation Reactions under Solvent-Free Conditions: Catalytic Activity Enhanced by Noncoordinating Anion without Silver Effect. ACS Catal 2014. [DOI: 10.1021/cs5009909] [Citation(s) in RCA: 148] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Dawei Wang
- The Key Laboratory of Food
Colloids and Biotechnology, Ministry of Education, School of Chemical
and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, China
| | - Keyan Zhao
- The Key Laboratory of Food
Colloids and Biotechnology, Ministry of Education, School of Chemical
and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, China
| | - Chongying Xu
- The Key Laboratory of Food
Colloids and Biotechnology, Ministry of Education, School of Chemical
and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, China
| | - Hongyan Miao
- The Key Laboratory of Food
Colloids and Biotechnology, Ministry of Education, School of Chemical
and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, China
| | - Yuqiang Ding
- The Key Laboratory of Food
Colloids and Biotechnology, Ministry of Education, School of Chemical
and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, China
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10
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Wang D, Zhao K, Yu X, Miao H, Ding Y. Iridium–CNP complex catalyzed cross-coupling of primary alcohols and secondary alcohols by a borrowing hydrogen strategy. RSC Adv 2014. [DOI: 10.1039/c4ra06474g] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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