1
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Ogo S, Yatabe T, Tome T, Takenaka R, Shiota Y, Kato K. Safe, One-Pot, Homogeneous Direct Synthesis of H 2O 2. J Am Chem Soc 2023; 145:4384-4388. [PMID: 36798970 PMCID: PMC9983002 DOI: 10.1021/jacs.2c13149] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Hydrogen peroxide is an environmentally friendly oxidizing agent but current synthetic methods are wasteful. This is a result of the high flammability of H2/O2 mixtures and/or the requirement for cocatalysts. In this paper, we report the synthesis of H2O2 by means of a homogeneous catalyst, which allows a safe, one-pot synthesis in water, using only H2 and O2. This catalyst is capable of removing electrons from H2, storing them for the reduction of O2, and then permitting the protonation of the reduced oxygen to H2O2. The turnover number (TON) is 910 under an H2/O2 (95/5) atmosphere (1.9 MPa) for 12 h at 23 °C, which is the highest of any homogeneous catalyst. Furthermore, we propose a reaction mechanism based on two crystal structures.
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Affiliation(s)
- Seiji Ogo
- Department
of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan,International
Institute for Carbon-Neutral Energy Research (WPI Academy I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan,Center
for Small Molecule Energy, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan,
| | - Takeshi Yatabe
- Department
of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan,International
Institute for Carbon-Neutral Energy Research (WPI Academy I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan,Center
for Small Molecule Energy, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Tamon Tome
- Department
of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Riko Takenaka
- Department
of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yoshihito Shiota
- Institute
for Materials Chemistry and Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kenji Kato
- Center
for Small Molecule Energy, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan,Mitsubishi
Gas Chemical Company Inc., Tokyo 100-8324, Japan
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2
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Kasera A, Biswas JP, Ali Alshehri A, Ahmed Al-Thabaiti S, Mokhtar M, Maiti D. Transition metal pincer complexes: A series of potential catalysts in C H activation reactions. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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3
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Gunther SO, Kosanovich AJ, Cao Y, Bhuvanesh N, Ozerov OV. Nucleopincers? Rhodium Complexes of Pyrimidine‐centered PNP Pincer Ligands Derived from Nitrogenous Nucleobases Uracil and Thymine. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202000417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- S. Olivia Gunther
- Department of Chemistry Texas A&M University 3255 TAMU College Station TX 77842 USA
| | - Alex J. Kosanovich
- Department of Chemistry Texas A&M University 3255 TAMU College Station TX 77842 USA
| | - Yihan Cao
- Department of Chemistry Texas A&M University 3255 TAMU College Station TX 77842 USA
| | - Nattamai Bhuvanesh
- Department of Chemistry Texas A&M University 3255 TAMU College Station TX 77842 USA
| | - Oleg V. Ozerov
- Department of Chemistry Texas A&M University 3255 TAMU College Station TX 77842 USA
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4
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Yatabe T, Kamitakahara K, Higashijima K, Ando T, Matsumoto T, Yoon KS, Enomoto T, Ogo S. Synthesis of acetic acid from CO 2, CH 3I and H 2 using a water-soluble electron storage catalyst. Chem Commun (Camb) 2021; 57:4772-4774. [PMID: 33942824 DOI: 10.1039/d1cc01611c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper reports a possible mechanism of acetic acid formation from CO2, CH3I and H2 in aqueous media and the central role played by a water-soluble Rh-based electron storage catalyst. In addition to water-solubility, we also report the crystal structures of two presumed intermediates. These findings together reveal (1) the advantage of water, not only as a green solvent, but also as a reactive Lewis base to extract H+ from H2, (2) the role of the metal (Rh) centre as a point for storing electrons from H2 and (3) the importance of an electron-withdrawing ligand (quaterpyridine, qpy) that supports electron storage.
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Affiliation(s)
- Takeshi Yatabe
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan. and Center for Small Molecule Energy, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kazuki Kamitakahara
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Kaede Higashijima
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Tatsuya Ando
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan. and Center for Small Molecule Energy, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takahiro Matsumoto
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan. and Center for Small Molecule Energy, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Ki-Seok Yoon
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan. and Center for Small Molecule Energy, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takao Enomoto
- Specialty Chemicals Section, Technology Development Department, Technical Division, Tanaka Kikinzoku Kogyo K. K. 22 Wadai, Tsukuba, Ibaraki, Japan
| | - Seiji Ogo
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan. and Center for Small Molecule Energy, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
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5
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Curto SG, de las Heras LA, Esteruelas MA, Oliván M, Oñate E, Vélez A. Reactions of POP-pincer rhodium(I)-aryl complexes with small molecules: coordination flexibility of the ether diphosphine. CAN J CHEM 2021. [DOI: 10.1139/cjc-2020-0061] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Reactions of the aryl complexes Rh(aryl){κ3-P,O,P-[xant(PiPr2)2]} (1; aryl = 3,5-Me2C6H3 (a), C6H5 (b), 3,5-Cl2C6H3 (c), 3-FC6H4 (d); xant(PiPr2)2 = 9,9-dimethyl-4,5-bis-(diisopropylphosphino)xanthene) with O2, CO, and MeO2CC≡CCO2Me have been performed. Under 1 atm of O2, the pentane solutions of complexes 1 afford the dinuclear peroxide derivatives [Rh(aryl){κ2-P,P-xant(PiPr2)2}]2(μ-O2)2 (2a–2d) as yellow solids. In solution, these species are unstable. In dichloromethane, at room temperature, they are transformed into the dioxygen adducts Rh(aryl)(η2-O2){κ3-P,O,P-[xant(PiPr2)2]} (3a–3d), as a result of the rupture of the double peroxide bridge and the reduction of the metal center. Complex 3b decomposes in benzene, at 50 °C, to give diphosphine oxide, phenol, and biphenyl. Complexes 1 react with CO to give the square-planar mono carbonyl derivatives Rh(aryl)(CO){κ2-P,P-[xant(PiPr2)2]} (4a–4d), which under carbon monoxide atmosphere evolve to benzoyl species Rh{C(O)aryl}(CO){κ2-P,P-[xant(PiPr2)2]} (5a–5d), resulting from the migratory insertion of CO into the Rh-aryl bond and the coordination of a second CO molecule. The transformation is reversible; under vacuum, complexes 5 regenerate the precursors 4. The addition of the activated alkyne to complexes 1b and 1d initially leads to the π-alkyne intermediates Rh(aryl){η2-C(CO2Me)≡C(CO2Me)}{κ3-P,O,P-[xant(PiPr2)2]} (6b, 6d), which evolve to the alkenyl derivatives Rh{(E)-C(CO2Me)=C(CO2Me)aryl}{κ3-P,O,P-[xant(PiPr2)2]} (7b, 7d). The diphosphine adapts its coordination mode to the stability requirements of the different complexes, coordinating cis-κ2-P,P in complexes 2, fac-κ3-P,O,P in compounds 3, trans-κ2-P,P in the mono carbonyl derivatives 4 and 5, and mer-κ3-P,O,P in products 6 and 7.
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Affiliation(s)
- Sheila G. Curto
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
| | - Laura A. de las Heras
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
| | - Miguel A. Esteruelas
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
| | - Montserrat Oliván
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
| | - Enrique Oñate
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
| | - Andrea Vélez
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
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6
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Chan NH, Gair JJ, Roy M, Qiu Y, Wang DS, Durak LJ, Chen L, Filatov AS, Lewis JC. Insight into the Scope and Mechanism for Transmetalation of Hydrocarbyl Ligands on Complexes Relevant to C–H Activation. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00628] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Natalie H. Chan
- Department of Chemistry, Indiana University, Bloomington, Indiana 47401, United States
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Joseph J. Gair
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Michael Roy
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Yehao Qiu
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Duo-Sheng Wang
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Landon J. Durak
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Liwei Chen
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Alexander S. Filatov
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Jared C. Lewis
- Department of Chemistry, Indiana University, Bloomington, Indiana 47401, United States
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7
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Kong F, Gu S, Liu C, Dickie DA, Zhang S, Gunnoe TB. Effects of Additives on Catalytic Arene C–H Activation: Study of Rh Catalysts Supported by Bis-phosphine Pincer Ligands. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00623] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Fanji Kong
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Shunyan Gu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Chang Liu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Diane A. Dickie
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Sen Zhang
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - T. Brent Gunnoe
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
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8
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Merz LS, Ballmann J, Gade LH. Phosphines and
N
‐Heterocycles Joining Forces: an Emerging Structural Motif in PNP‐Pincer Chemistry. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000206] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Lukas S. Merz
- Anorganisch‐Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Joachim Ballmann
- Anorganisch‐Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Lutz H. Gade
- Anorganisch‐Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
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9
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Gu S, Nielsen RJ, Taylor KH, Fortman GC, Chen J, Dickie DA, Goddard WA, Gunnoe TB. Use of Ligand Steric Properties to Control the Thermodynamics and Kinetics of Oxidative Addition and Reductive Elimination with Pincer-Ligated Rh Complexes. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00122] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Shunyan Gu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Robert J. Nielsen
- Materials and Process Simulation Center, Department of Chemistry, California Institute of Technology, Pasadena, California 91125, United States
| | - Kathleen H. Taylor
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - George C. Fortman
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Junqi Chen
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Diane A. Dickie
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - William A. Goddard
- Materials and Process Simulation Center, Department of Chemistry, California Institute of Technology, Pasadena, California 91125, United States
| | - T. Brent Gunnoe
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
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10
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Recent advances in the chemistry of group 9—Pincer organometallics. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2020. [DOI: 10.1016/bs.adomc.2019.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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11
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Elhadi Benhalouche M, Huang HY, Miloudi A, Doucet H, Soulé JF. Reactivity of N-methyl-N-(polyfluorobenzyl)acetamides and N-methyl-N-(polyfluorobenzyl)benzamides in Pd-catalyzed C–H bond arylation. CR CHIM 2019. [DOI: 10.1016/j.crci.2019.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Jori PK, Jadhav VH. Transition‐Metal‐Free Glucose‐Derived Carbonaceous Catalyst Catalyzes Direct C‐H Arylation of Unactivated Arenes with Aryl Halides. ChemistrySelect 2019. [DOI: 10.1002/slct.201900013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Popat K. Jori
- Division of Organic ChemistryCSIR-National Chemical Laboratory Dr. Homi-Bhabha Road, Pashan Pune- 411008 India
| | - Vrushali H. Jadhav
- Division of Organic ChemistryCSIR-National Chemical Laboratory Dr. Homi-Bhabha Road, Pashan Pune- 411008 India
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13
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Gair JJ, Qiu Y, Khade RL, Chan NH, Filatov AS, Zhang Y, Lewis JC. Synthesis, Characterization, and Theoretical Investigation of a Transition State Analogue for Proton Transfer during C–H Activation by a Rhodium-Pincer Complex. Organometallics 2019. [DOI: 10.1021/acs.organomet.8b00887] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Joseph J. Gair
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Yehao Qiu
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Rahul L. Khade
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Natalie H. Chan
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Alexander S. Filatov
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Yong Zhang
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Jared C. Lewis
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
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14
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Devillard M, Ehlers A, Siegler MA, van der Vlugt JI. Selective Carbanion-Pyridine Coordination of a Reactive P,N Ligand to Rh I. Chemistry 2019; 25:3875-3883. [PMID: 30600857 PMCID: PMC6519283 DOI: 10.1002/chem.201805504] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 12/12/2018] [Indexed: 01/12/2023]
Abstract
Ligands with reactive carbon sites in the periphery of a metal center have emerged as a powerful approach for metal-ligand bond activation. These reactive carbon sites are commonly generated by deprotonation strategies. Carbon-silicon bond cleavage is a potential alternative to access such constructs. Herein, the monodesilylation of bis-silyl-substituted P,N scaffold PNSi2 in the coordination sphere of [RhI (Cl)(CO)(PNSi2 )] (1) with sodium azide is disclosed. This affords a unique dinucleating anionic κ2 -C,N-κ1 -P ligand with a carbanionic methine carbon atom directly bound to rhodium as part of a four-membered Rh-N-C-C rhodacycle. This dimer undergoes meta-pyridine C-H activation facilitated by weak bases, which leads to a desymmetrization of the system and provides a σ,π-bridging 3-pyridyl fragment bound to RhI . The facile Si-C cleavage strategy may pave the way to studying the reactivity and functionalization of a variety of κ2 -C,N-coordinated pyridine scaffolds for selective transformations.
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Affiliation(s)
- Marc Devillard
- van ‘t Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Andreas Ehlers
- van ‘t Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
- Department of ChemistryUniversity of Johannesburg, P.O. Box 254Auckland ParkJohannesburgSouth Africa
| | - Maxime A. Siegler
- Department of ChemistryJohns Hopkins University3400 N Charles StreetBaltimoreMD21218USA
| | - Jarl Ivar van der Vlugt
- van ‘t Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
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