1
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Iida T, Sato R, Yoshigoe Y, Kanbara T, Kuwabara J. Mechanistic study on the reductive elimination of (aryl)(fluoroaryl)palladium complexes: a key step in regiospecific dehydrogenative cross-coupling. Dalton Trans 2024. [PMID: 38958099 DOI: 10.1039/d4dt01453g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Cross-dehydrogenative coupling (CDC) reactions have attracted attention as short-step synthetic methods for C-C bond formation. Recently, we have developed CDC reactions between naphthalene and fluorobenzene. Rather than exhibiting general regioselectivity, this reaction proceeds selectively at the β-position of naphthalene. In this study, investigation using model complexes as reaction intermediates revealed that the origin of the unique selectivity is the exclusive occurrence of reductive elimination at the β-position. Detailed studies on the reductive elimination showed that the steric hindrance of the naphthyl group and the electron-withdrawing properties of fluorobenzene determine the position at which the reductive elimination reaction proceeds. These results show that the selectivity of the C-H functionalisation of polycyclic aromatic hydrocarbons (PAHs) is determined not by the C-H cleavage step, but by the subsequent reductive elimination step. The regioselective CDC reaction was adaptable to various PAHs but was less selective for pyrene with extended π-conjugation. In fluorobenzene substrates, the F atoms at the two ortho positions of the C-H moiety are necessary for high selectivity. The substrate ranges are in good agreement with the proposed mechanism, in which the reductive elimination step determines the regioselectivity.
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Affiliation(s)
- Tomoki Iida
- Institute of Pure and Applied Sciences, University of Tsukuba 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan.
| | - Ryota Sato
- Institute of Pure and Applied Sciences, University of Tsukuba 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan.
| | - Yusuke Yoshigoe
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
| | - Takaki Kanbara
- Institute of Pure and Applied Sciences, University of Tsukuba 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan.
| | - Junpei Kuwabara
- Institute of Pure and Applied Sciences, University of Tsukuba 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan.
- Tsukuba Research Center for Energy Materials Science (TREMS), Institute of Pure and Applied Sciences, University of Tsukuba 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan.
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2
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Whitehurst WG, Kim J, Koenig SG, Chirik PJ. C-H Activation by Isolable Cationic Bis(phosphine) Cobalt(III) Metallacycles. J Am Chem Soc 2022; 144:19186-19195. [PMID: 36194198 DOI: 10.1021/jacs.2c08865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Five- and six-coordinate cationic bis(phosphine) cobalt(III) metallacycle complexes were synthesized with the general structures, [(depe)Co(cycloneophyl)(L)(L')][BArF4] (depe = 1,2-bis(diethylphosphino)ethane; cycloneophyl = [κ-C:C-(CH2C(Me)2)C6H4]; L/L' = pyridine, pivalonitrile, or the vacant site, BAr4F = B[(3,5-(CF3)2)C6H3]4). Each of these compounds promoted facile directed C(sp2)-H activation with exclusive selectivity for ortho-alkylated products, consistent with the selectivity of reported cobalt-catalyzed arene-alkene-alkyne coupling reactions. The direct observation of C-H activation by cobalt(III) metallacycles provided experimental support for the intermediacy of these compounds in this class of catalytic C-H functionalization reaction. Deuterium labeling and kinetic studies provided insight into the nature of C-H bond cleavage and C-C bond reductive elimination from isolable cobalt(III) precursors.
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Affiliation(s)
- William G Whitehurst
- Department of Chemistry, Frick Laboratory, Princeton University, Princeton, New Jersey 08544, United States
| | - Junho Kim
- Department of Chemistry, Frick Laboratory, Princeton University, Princeton, New Jersey 08544, United States
| | - Stefan G Koenig
- Small Molecule Process Chemistry, Genentech Inc, 1 DNA Way, South San Francisco, California 94080, United States
| | - Paul J Chirik
- Department of Chemistry, Frick Laboratory, Princeton University, Princeton, New Jersey 08544, United States
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3
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Liberman-Martin AL, Van Vleet MJ, Elenberger T, Cave RJ, Williams NSB. Geometric Control of Carbon–Carbon Reductive Elimination from a Platinum(IV) Pincer Complex. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Mary J. Van Vleet
- Department of Chemistry and Biochemistry, Spelman College, 350 Spelman Lane SW, Atlanta, Georgia 30314, United States
| | - Tamara Elenberger
- Schmid College of Science and Technology, Chapman University, Orange, California 92866, United States
| | - Robert J. Cave
- Department of Chemistry, Harvey Mudd College, 301 Platt Boulevard, Claremont, California 91711, United States
| | - Nancy S. B. Williams
- The Keck Science Department of Claremont McKenna, Pitzer, and Scripps Colleges, 925 North Mills Avenue, Claremont, California 91711, United States
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4
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de las Heras LA, Esteruelas MA, Oliván M, Oñate E. C–Cl Oxidative Addition and C–C Reductive Elimination Reactions in the Context of the Rhodium-Promoted Direct Arylation. Organometallics 2022; 41:716-732. [PMID: 35368715 PMCID: PMC8966374 DOI: 10.1021/acs.organomet.1c00643] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Indexed: 01/09/2023]
Abstract
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A cycle of stoichiometric
elemental reactions defining the direct
arylation promoted by a redox-pair Rh(I)–Rh(III) is reported.
Starting from the rhodium(I)-aryl complex RhPh{κ3-P,O,P-[xant(PiPr2)2]} (xant(PiPr2)2 = 9,9-dimethyl-4,5-bis(diisopropylphosphino)xanthene),
the reactions include C–Cl oxidative addition of organic chlorides,
halide abstraction from the resulting six-coordinate rhodium(III)
derivatives, C–C reductive coupling between the initial aryl
ligand and the added organic group, oxidative addition of a C–H
bond of a new arene, and deprotonation of the generated hydride-rhodium(III)-aryl
species to form a new rhodium(I)-aryl derivative. In this context,
the kinetics of the oxidative additions of 2-chloropyridine, chlorobenzene,
benzyl chloride, and dichloromethane to RhPh{κ3-P,O,P-[xant(PiPr2)2]} and the C–C reductive
eliminations of biphenyl and benzylbenzene from [RhPh2{κ3-P,O,P-[xant(PiPr2)2]}]BF4 and [RhPh(CH2Ph){κ3-P,O,P-[xant(PiPr2)2]}]BF4, respectively,
have been studied. The oxidative additions generally involve the cis
addition of the C–Cl bond of the organic chloride to the rhodium(I)
complex, being kinetically controlled by the C–Cl bond dissociation
energy; the weakest C–Cl bond is faster added. The C–C
reductive elimination is kinetically governed by the dissociation
energy of the formed bond. The C(sp3)–C(sp2) coupling to give benzylbenzene
is faster than the C(sp2)–C(sp2) bond
formation to afford biphenyl. In spite of that a most demanding orientation
requirement is needed for the C(sp3)–C(sp2) coupling than for the C(sp2)–C(sp2) bond formation, the energetic effort for the pregeneration of the
C(sp3)–C(sp2) bond is lower. As a result,
the weakest C–C bond is formed faster.
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Affiliation(s)
- 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
| | - 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
| | - 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
| | - 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
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5
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Rubashkin SB, Chu WY, Goldberg KI. Lowering the Barrier to C–H Activation at IrIII through Pincer Ligand Design. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sophie B. Rubashkin
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Wan-Yi Chu
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Karen I. Goldberg
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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6
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Shada ADR, Miller AJM, Emge TJ, Goldman AS. Catalytic Dehydrogenation of Alkanes by PCP–Pincer Iridium Complexes Using Proton and Electron Acceptors. ACS Catal 2021. [DOI: 10.1021/acscatal.0c05160] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Arun Dixith Reddy Shada
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Alexander J. M. Miller
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Thomas J. Emge
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Alan S. Goldman
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
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7
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8
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Wilklow-Marnell M, Brennessel WW, Jones WD. Unexpected Solvent Effects in the Isomerization of iPrPCPIr(η 2-PhC≡CPh) to a 1-Iridaindene. Isr J Chem 2017. [DOI: 10.1002/ijch.201700013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | - William D. Jones
- Department of Chemistry; University of Rochester; Rochester NY 14627 USA
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9
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Johnson SA, Higgins RF, Abu-Omar MM, Shores MP, Bart SC. Mechanistic Insights into Concerted C–C Reductive Elimination from Homoleptic Uranium Alkyls. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00438] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sara A. Johnson
- H.C.
Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
| | - Robert F. Higgins
- Department
of Chemistry, Colorado State University, Ft. Collins, Colorado 80523, United States
| | - Mahdi M. Abu-Omar
- H.C.
Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
| | - Matthew P. Shores
- Department
of Chemistry, Colorado State University, Ft. Collins, Colorado 80523, United States
| | - Suzanne C. Bart
- H.C.
Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
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10
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How does the carbon hybridization impact the rate of metal-carbon bond cleavage by an alkyne? A case study with POCOP-pincer ligated palladium hydrocarbyl complexes. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.04.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Wilklow-Marnell M, Li B, Zhou T, Krogh-Jespersen K, Brennessel WW, Emge TJ, Goldman AS, Jones WD. Catalytic Dehydrogenative C–C Coupling by a Pincer-Ligated Iridium Complex. J Am Chem Soc 2017; 139:8977-8989. [DOI: 10.1021/jacs.7b03433] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Miles Wilklow-Marnell
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Bo Li
- Department
of Chemistry, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Tian Zhou
- Department
of Chemistry, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Karsten Krogh-Jespersen
- Department
of Chemistry, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - William W. Brennessel
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Thomas J. Emge
- Department
of Chemistry, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Alan S. Goldman
- Department
of Chemistry, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - William D. Jones
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
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12
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Sberegaeva AV, Watts D, Vedernikov AN. Oxidative Functionalization of Late Transition Metal–Carbon Bonds. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2017. [DOI: 10.1016/bs.adomc.2017.03.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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13
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Affiliation(s)
- Kathrin H. Hopmann
- Centre for Theoretical and
Computational Chemistry (CTCC) and Department of Chemistry, University of Tromsø - The Artic University of Norway, N-9037 Tromsø, Norway
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14
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Affiliation(s)
- Sean P. Vilanova
- Department
of Chemistry and
Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Vlad M. Iluc
- Department
of Chemistry and
Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
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15
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16
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Fiedler T, Bhuvanesh N, Hampel F, Reibenspies JH, Gladysz JA. Gyroscope like molecules consisting of trigonal or square planar osmium rotators within three-spoked dibridgehead diphosphine stators: syntheses, substitution reactions, structures, and dynamic properties. Dalton Trans 2016; 45:7131-47. [DOI: 10.1039/c6dt00692b] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The OsLy moieties of the title complexes undergo rapid rotation within the diphosphine cages when L is restricted to Cl, Br, CO, H, and Me.
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Affiliation(s)
- Tobias Fiedler
- Department of Chemistry
- Texas A&M University
- College Station
- USA
- Institut für Organische Chemie and Interdisciplinary Center for Molecular Materials
| | | | - Frank Hampel
- Institut für Organische Chemie and Interdisciplinary Center for Molecular Materials
- Friedrich-Alexander-Universität Erlangen-Nürnberg
- 91054 Erlangen
- Germany
| | | | - John A. Gladysz
- Department of Chemistry
- Texas A&M University
- College Station
- USA
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17
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Bowes EG, Pal S, Love JA. Exclusive Csp(3)-Csp(3) vs Csp(2)-Csp(3) Reductive Elimination from Pt(IV) Governed by Ligand Constraints. J Am Chem Soc 2015; 137:16004-7. [PMID: 26673642 DOI: 10.1021/jacs.5b10993] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Selective reductive elimination of ethane (Csp(3)-Csp(3) RE) was observed following bromide abstraction and subsequent thermolysis of a Pt(IV) complex bearing both Csp(3)- and Csp(2)-hybridized hydrocarbyl ligands. Through a comparative experimental and theoretical study with two other Pt(IV) complexes featuring greater conformational flexibility of the ligand scaffold, we show that the rigidity of a meridionally coordinating ligand raises the barrier for Csp(2)-Csp(3) RE, resulting in unprecedented reactivity.
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Affiliation(s)
- Eric G Bowes
- Department of Chemistry, The University of British Columbia , Vancouver, British Columbia V6T 1Z1, Canada
| | - Shrinwantu Pal
- Department of Chemistry, The University of British Columbia , Vancouver, British Columbia V6T 1Z1, Canada
| | - Jennifer A Love
- Department of Chemistry, The University of British Columbia , Vancouver, British Columbia V6T 1Z1, Canada
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18
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Titova EM, Silantyev GA, Filippov OA, Gulyaeva ES, Gutsul EI, Dolgushin FM, Belkova NV. PCP Pincer Iridium Chemistry – Coordination of Pyridines to [(
t
Bu
PCP)IrH(Cl)]. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201501083] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ekaterina M. Titova
- Russian Academy of Sciences, A. N. Nesmeyanov Institute of Organoelement Compounds, Vavilov Str. 28, 119991 Moscow, Russia, http://mhlab.ru
| | - Gleb A. Silantyev
- Russian Academy of Sciences, A. N. Nesmeyanov Institute of Organoelement Compounds, Vavilov Str. 28, 119991 Moscow, Russia, http://mhlab.ru
| | - Oleg A. Filippov
- Russian Academy of Sciences, A. N. Nesmeyanov Institute of Organoelement Compounds, Vavilov Str. 28, 119991 Moscow, Russia, http://mhlab.ru
| | - Ekaterina S. Gulyaeva
- Russian Academy of Sciences, A. N. Nesmeyanov Institute of Organoelement Compounds, Vavilov Str. 28, 119991 Moscow, Russia, http://mhlab.ru
| | - Evgenii I. Gutsul
- Russian Academy of Sciences, A. N. Nesmeyanov Institute of Organoelement Compounds, Vavilov Str. 28, 119991 Moscow, Russia, http://mhlab.ru
| | - Fedor M. Dolgushin
- Russian Academy of Sciences, A. N. Nesmeyanov Institute of Organoelement Compounds, Vavilov Str. 28, 119991 Moscow, Russia, http://mhlab.ru
| | - Natalia V. Belkova
- Russian Academy of Sciences, A. N. Nesmeyanov Institute of Organoelement Compounds, Vavilov Str. 28, 119991 Moscow, Russia, http://mhlab.ru
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19
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Jonasson KJ, Polukeev AV, Marcos R, Ahlquist MSG, Wendt OF. Reversible α-Hydrogen and α-Alkyl Elimination in PC(sp3)P Pincer Complexes of Iridium. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503593] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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20
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Jonasson KJ, Polukeev AV, Marcos R, Ahlquist MSG, Wendt OF. Reversible α-Hydrogen and α-Alkyl Elimination in PC(sp3)P Pincer Complexes of Iridium. Angew Chem Int Ed Engl 2015; 54:9372-5. [DOI: 10.1002/anie.201503593] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Indexed: 11/12/2022]
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21
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Raphael Karikachery A, Masjedi M, Sharp PR. Thermal and Photochemical Ring-Bromination in Naphthyl-, Naphthdiyl-, and Dicarboximideperyl-Platinum Complexes. Organometallics 2015. [DOI: 10.1021/om501322f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
| | - Mehdi Masjedi
- 125 Chemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Paul R. Sharp
- 125 Chemistry, University of Missouri, Columbia, Missouri 65211, United States
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22
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Goldberg JM, Wong GW, Brastow KE, Kaminsky W, Goldberg KI, Heinekey DM. The Importance of Steric Factors in Iridium Pincer Complexes. Organometallics 2015. [DOI: 10.1021/om501166w] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Jonathan M. Goldberg
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Gene W. Wong
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Kenzie E. Brastow
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Werner Kaminsky
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Karen I. Goldberg
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - D. Michael Heinekey
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
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23
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Chen S, Su Y, Han K, Li X. Mechanistic studies on C–C reductive coupling of five-coordinate Rh(iii) complexes. Org Chem Front 2015. [DOI: 10.1039/c5qo00049a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
C–C reductive coupling of rare five-coordinate rhodium(iii) complexes has been studied in detail.
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Affiliation(s)
- Shanshan Chen
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371
- Department of Applied Chemistry
| | - Yan Su
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Keli Han
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Xingwei Li
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371
- Dalian Institute of Chemical Physics
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24
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Cloutier JP, Vabre B, Moungang-Soumé B, Zargarian D. Synthesis and Reactivities of New NCN-Type Pincer Complexes of Nickel. Organometallics 2014. [DOI: 10.1021/om5010176] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Boris Vabre
- Département de chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
| | | | - Davit Zargarian
- Département de chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
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25
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Laviska DA, Guan C, Emge TJ, Wilklow-Marnell M, Brennessel WW, Jones WD, Krogh-Jespersen K, Goldman AS. Addition of C-C and C-H bonds by pincer-iridium complexes: a combined experimental and computational study. Dalton Trans 2014; 43:16354-65. [PMID: 25250874 DOI: 10.1039/c4dt02043j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We report that pincer-ligated iridium complexes undergo oxidative addition of the strained C-C bond of biphenylene. The sterically crowded species ((tBu)PCP)Ir ((R)PCP = κ(3)-1,3-C6H3(CH2PR2)2) initially reacts with biphenylene to selectively add the C(1)-H bond, to give a relatively stable aryl hydride complex. Upon heating at 125 °C for 24 h, full conversion to the C-C addition product, ((tBu)PCP)Ir(2,2'-biphenyl), is observed. The much less crowded ((iPr)PCP)Ir undergoes relatively rapid C-C addition at room temperature. The large difference in the apparent barriers to C-C addition is notable in view of the fact that the addition products are not particularly crowded, since the planar biphenyl unit adopts an orientation perpendicular to the plane of the (R)PCP ligands. Based on DFT calculations the large difference in the barriers to C-C addition can be explained in terms of a "tilted" transition state. In the transition state the biphenylene cyclobutadiene core is calculated to be strongly tilted (ca. 50°-60°) relative to its orientation in the product in the plane perpendicular to that of the PCP ligand; this tilt results in very short, unfavorable, non-bonding contacts with the t-butyl groups in the case of the (tBu)PCP ligand. The conclusions of the biphenylene studies are applied to interpret computational results for cleavage of the unstrained C-C bond of biphenyl by ((R)PCP)Ir.
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Affiliation(s)
- David A Laviska
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, USA.
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26
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Timpa SD, Pell CJ, Ozerov OV. A Well-Defined (POCOP)Rh Catalyst for the Coupling of Aryl Halides with Thiols. J Am Chem Soc 2014; 136:14772-9. [DOI: 10.1021/ja505576g] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Samuel D. Timpa
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Christopher J. Pell
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Oleg V. Ozerov
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
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27
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Timpa SD, Zhou J, Bhuvanesh N, Ozerov OV. Potential Carbon–Fluorine Reductive Elimination from Pincer-Supported Rh(III) and Dominating Side Reactions: Theoretical and Experimental Examination. Organometallics 2014. [DOI: 10.1021/om5008902] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Samuel D. Timpa
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Jia Zhou
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Oleg V. Ozerov
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
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28
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Timpa SD, Pell CJ, Zhou J, Ozerov OV. Fate of Aryl/Amido Complexes of Rhodium(III) Supported by a POCOP Pincer Ligand: C–N Reductive Elimination, β-Hydrogen Elimination, and Relevance to Catalysis. Organometallics 2014. [DOI: 10.1021/om500577w] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Samuel D. Timpa
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Christopher J. Pell
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Jia Zhou
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Oleg V. Ozerov
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
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29
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Xu H, Williard PG, Bernskoetter WH. C–H bond activation and S-atom transfer from cobalt(iii) thiolate and isothiocyanate complexes. Dalton Trans 2014; 43:14696-700. [DOI: 10.1039/c4dt01823k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Margulieux GW, Semproni SP, Chirik PJ. Photochemically Induced Reductive Elimination as a Route to a Zirconocene Complex with a Strongly Activated N2Ligand. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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31
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Margulieux GW, Semproni SP, Chirik PJ. Photochemically Induced Reductive Elimination as a Route to a Zirconocene Complex with a Strongly Activated N2Ligand. Angew Chem Int Ed Engl 2014; 53:9189-92. [DOI: 10.1002/anie.201402401] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Indexed: 11/06/2022]
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32
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Johnson HC, Torry-Harris R, Ortega L, Theron R, McIndoe JS, Weller AS. Exploring the mechanism of the hydroboration of alkenes by amine–boranes catalysed by [Rh(xantphos)]+. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00597j] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The [Rh(xantphos)]+ fragment acts as an effective catalyst for the hydroboration of the alkene TBE (tert-butyl ethene) using the amine–borane H3B·NMe3 at low (0.5 mol%) catalyst loadings to give the linear product.
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Affiliation(s)
| | | | - Laura Ortega
- Visiting Student from Departamento de Química Inorgańica
- Instituto de Investigaciones Químicas (IIQ)
- Universidad de Sevilla
- Consejo Superior de Investigaciones Científicas
- 41092 Sevilla, Spain
| | - Robin Theron
- Department of Chemistry
- University of Victoria
- Victoria, Canada
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33
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Woolley MJ, Khairallah GN, da Silva G, Donnelly PS, Yates BF, O’Hair RAJ. Role of the Metal, Ligand, and Alkyl/Aryl Group in the Hydrolysis Reactions of Group 10 Organometallic Cations [(L)M(R)]+. Organometallics 2013. [DOI: 10.1021/om400358q] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Matthew J. Woolley
- School of Chemistry, The University of Melbourne, Victoria 3010, Australia
- ARC Centre of Excellence for Free
Radical Chemistry and Biotechnology, The University of Melbourne, Victoria 3010, Australia
- Bio21 Institute of Molecular Science
and Biotechnology, The University of Melbourne, Victoria 3010, Australia
| | - George N. Khairallah
- School of Chemistry, The University of Melbourne, Victoria 3010, Australia
- ARC Centre of Excellence for Free
Radical Chemistry and Biotechnology, The University of Melbourne, Victoria 3010, Australia
- Bio21 Institute of Molecular Science
and Biotechnology, The University of Melbourne, Victoria 3010, Australia
| | - Gabriel da Silva
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Victoria 3010, Australia
| | - Paul S. Donnelly
- School of Chemistry, The University of Melbourne, Victoria 3010, Australia
- Bio21 Institute of Molecular Science
and Biotechnology, The University of Melbourne, Victoria 3010, Australia
| | - Brian F. Yates
- School of Chemistry, University of Tasmania, Private Bag 75 Hobart, Tasmania 7001, Australia
| | - Richard A. J. O’Hair
- School of Chemistry, The University of Melbourne, Victoria 3010, Australia
- ARC Centre of Excellence for Free
Radical Chemistry and Biotechnology, The University of Melbourne, Victoria 3010, Australia
- Bio21 Institute of Molecular Science
and Biotechnology, The University of Melbourne, Victoria 3010, Australia
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34
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Lao DB, Owens ACE, Heinekey DM, Goldberg KI. Partial Deoxygenation of Glycerol Catalyzed by Iridium Pincer Complexes. ACS Catal 2013. [DOI: 10.1021/cs400551g] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- David B. Lao
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195-1700, United States
| | - Alisa C. E. Owens
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195-1700, United States
| | - D. Michael Heinekey
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195-1700, United States
| | - Karen I. Goldberg
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195-1700, United States
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35
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Dobereiner GE, Yuan J, Schrock RR, Goldman AS, Hackenberg JD. Catalytic Synthesis of n-Alkyl Arenes through Alkyl Group Cross-Metathesis. J Am Chem Soc 2013; 135:12572-5. [DOI: 10.1021/ja4066392] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Graham E. Dobereiner
- Department
of Chemistry, 6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts
02139, United States
| | - Jian Yuan
- Department
of Chemistry, 6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts
02139, United States
| | - Richard R. Schrock
- Department
of Chemistry, 6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts
02139, United States
| | - Alan S. Goldman
- Department
of Chemistry and
Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Jason D. Hackenberg
- Department
of Chemistry and
Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
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36
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Campos J, Peloso R, Brookhart M, Carmona E. A Cationic Terminal Methylene Complex of Ir(I) Supported by a Pincer Ligand. Organometallics 2013. [DOI: 10.1021/om400383s] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jesus Campos
- Instituto de Investigaciones Químicas-Departamento de Química
Inorgánica, Universidad de Sevilla-Consejo Superior de Investigaciones Científicas, Avda. Américo
Vespucio 49, 41092 Sevilla, Spain
| | - Riccardo Peloso
- Instituto de Investigaciones Químicas-Departamento de Química
Inorgánica, Universidad de Sevilla-Consejo Superior de Investigaciones Científicas, Avda. Américo
Vespucio 49, 41092 Sevilla, Spain
| | - Maurice Brookhart
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United
States
| | - Ernesto Carmona
- Instituto de Investigaciones Químicas-Departamento de Química
Inorgánica, Universidad de Sevilla-Consejo Superior de Investigaciones Científicas, Avda. Américo
Vespucio 49, 41092 Sevilla, Spain
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37
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Kundu S, Choi J, Wang DY, Choliy Y, Emge TJ, Krogh-Jespersen K, Goldman AS. Cleavage of Ether, Ester, and Tosylate C(sp3)–O Bonds by an Iridium Complex, Initiated by Oxidative Addition of C–H Bonds. Experimental and Computational Studies. J Am Chem Soc 2013; 135:5127-43. [DOI: 10.1021/ja312464b] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Sabuj Kundu
- Department
of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick,
New Jersey 08903, United States
| | - Jongwook Choi
- Department
of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick,
New Jersey 08903, United States
| | - David Y. Wang
- Department
of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick,
New Jersey 08903, United States
| | - Yuriy Choliy
- Department
of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick,
New Jersey 08903, United States
| | - Thomas J. Emge
- Department
of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick,
New Jersey 08903, United States
| | - Karsten Krogh-Jespersen
- Department
of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick,
New Jersey 08903, United States
| | - Alan S. Goldman
- Department
of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick,
New Jersey 08903, United States
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38
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Hoyt JM, Sylvester KT, Semproni SP, Chirik PJ. Synthesis and Electronic Structure of Bis(imino)pyridine Iron Metallacyclic Intermediates in Iron-Catalyzed Cyclization Reactions. J Am Chem Soc 2013; 135:4862-77. [DOI: 10.1021/ja400895j] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jordan M. Hoyt
- Department of Chemistry, Princeton University, Princeton, New Jersey, United
States 08544
| | - Kevin T. Sylvester
- Department
of Chemistry and
Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York, United States 14850
| | - Scott P. Semproni
- Department of Chemistry, Princeton University, Princeton, New Jersey, United
States 08544
| | - Paul J. Chirik
- Department of Chemistry, Princeton University, Princeton, New Jersey, United
States 08544
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39
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Campos J, Kundu S, Pahls DR, Brookhart M, Carmona E, Cundari TR. Mechanism of hydrogenolysis of an iridium-methyl bond: evidence for a methane complex intermediate. J Am Chem Soc 2013; 135:1217-20. [PMID: 23311932 DOI: 10.1021/ja310982v] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Evidence for key σ-complex intermediates in the hydrogenolysis of the iridium-methyl bond of (PONOP)Ir(H)(Me)(+) (1) [PONOP = 2,6-bis(di-tert-butylphosphinito)pyridine] has been obtained. The initially formed η(2)-H(2) complex, 2, was directly observed upon treatment of 1 with H(2), and evidence for reversible formation of a σ-methane complex, 5, was obtained through deuterium scrambling from η(2)-D(2) in 2-d(2) into the methyl group of 2 prior to methane loss. This sequence of reactions was modeled by density functional theory calculations. The transition state for formation of 5 from 2 showed significant shortening of the Ir-H bond for the hydrogen being transferred; no true Ir(V) trihydride intermediate could be located. Barriers to methane loss from 2 were compared to those of 1 and the six-coordinate species (PONOP)Ir(H)(Me)(CO)(+) and (PONOP)Ir(H)(Me)(Cl).
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Affiliation(s)
- Jesús Campos
- Departamento de Química Inorgánica, Instituto de Investigaciones Químicas (IIQ), Universidad de Sevilla, Consejo Superior de Investigaciones Científicas, Avda. Américo Vespucio 49, 41092 Sevilla, Spain
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40
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41
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Zhao Q, Cao XY, Wen TB, Xia H. From Osmium Hydrido Vinylidene to Osmacycles: The Key Role of Osmabutadiene Intermediates. Chem Asian J 2012; 8:269-75. [DOI: 10.1002/asia.201200872] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Indexed: 11/08/2022]
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42
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Bilbrey JA, Sontag SK, Huddleston NE, Allen WD, Locklin J. On the Role of Disproportionation Energy in Kumada Catalyst-Transfer Polycondensation. ACS Macro Lett 2012; 1:995-1000. [PMID: 35607024 DOI: 10.1021/mz3002929] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Kumada catalyst-transfer polycondensation (KCTP) is an effective method for the controlled polymerization of conjugated polymers. Nevertheless, side reactions leading to early termination and unwanted chain coupling cause deviations from the target molecular weight, along with increasing polydispersity and end group variation. The departure from the KCTP cycle stems from a disproportionation reaction that leads to experimentally observed side products. The disproportionation energies for a series of nickel-based initiators containing bidentate phosphino attendant ligands were computed using density functional theory at the B3LYP/DZP level. The initiator was found to be less favorable toward disproportionation by 0.5 kcal mol-1 when ligated by 1,3-bis(diphenylphosphino)propane (dppp) rather than 1,2-bis(diphenylphosphino)ethane (dppe). Trends in disproportionation energy (Edisp) with a variety of bidentate phosphine ligands match experimental observations of decreased polymerization control. Theoretical Edisp values can thus be used to predict the likelihood of disproportionation in cross-coupling reactions and, therefore, aid in catalyst design.
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Affiliation(s)
- Jenna A. Bilbrey
- Department
of Chemistry , ‡College of Engineering, Center for Nanoscale Science and Engineering, and §Center for Computational
Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - S. Kyle Sontag
- Department
of Chemistry , ‡College of Engineering, Center for Nanoscale Science and Engineering, and §Center for Computational
Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - N. Eric Huddleston
- Department
of Chemistry , ‡College of Engineering, Center for Nanoscale Science and Engineering, and §Center for Computational
Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Wesley D. Allen
- Department
of Chemistry , ‡College of Engineering, Center for Nanoscale Science and Engineering, and §Center for Computational
Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Jason Locklin
- Department
of Chemistry , ‡College of Engineering, Center for Nanoscale Science and Engineering, and §Center for Computational
Chemistry, University of Georgia, Athens, Georgia 30602, United States
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43
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Pawley RJ, Huertos MA, Lloyd-Jones GC, Weller AS, Willis MC. Intermolecular Alkyne Hydroacylation. Mechanistic Insight from the Isolation of the Vinyl Intermediate That Precedes Reductive Elimination. Organometallics 2012. [DOI: 10.1021/om300647n] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rebekah J. Pawley
- Department of Chemistry, Inorganic
Chemistry Laboratories, South Parks Road, University of Oxford, Oxford, U.K. OX1 3QR
| | - Miguel A. Huertos
- Department of Chemistry, Inorganic
Chemistry Laboratories, South Parks Road, University of Oxford, Oxford, U.K. OX1 3QR
| | - Guy C. Lloyd-Jones
- School
of Chemistry, University of Bristol, Cantocks Close, Bristol, U.K. BS8 1TS
| | - Andrew S. Weller
- Department of Chemistry, Inorganic
Chemistry Laboratories, South Parks Road, University of Oxford, Oxford, U.K. OX1 3QR
| | - Michael C. Willis
- Department of Chemistry, Inorganic
Chemistry Laboratories, South Parks Road, University of Oxford, Oxford, U.K. OX1 3QR
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44
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Density functional studies of influences of Ni triad metals and solvents on oxidative addition of MeI to [M(CH3)2(NH3)2] complexes and C–C reductive elimination from [M(CH3)3(NH3)2I] complexes. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2011.07.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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45
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Xu H, Bernskoetter WH. Mechanistic Considerations for C–C Bond Reductive Coupling at a Cobalt(III) Center. J Am Chem Soc 2011; 133:14956-9. [DOI: 10.1021/ja2072548] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hongwei Xu
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Wesley H. Bernskoetter
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
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46
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Schultz KM, Goldberg KI, Gusev DG, Heinekey DM. Synthesis, Structure, and Reactivity of Iridium NHC Pincer Complexes. Organometallics 2011. [DOI: 10.1021/om101024x] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Katherine M. Schultz
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195-1700, United States
| | - Karen I. Goldberg
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195-1700, United States
| | - Dmitry G. Gusev
- Department of Chemistry, Wilfrid Laurier University, Waterloo, Ontario N2L 3C5, Canada
| | - D. Michael Heinekey
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195-1700, United States
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47
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Adams JJ, Lau A, Arulsamy N, Roddick DM. Acceptor PCP Pincer Iridium Chemistry: (CF3PCP)IrIII Coordination Properties. Organometallics 2011. [DOI: 10.1021/om1008633] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jeramie J. Adams
- Department of Chemistry, Box 3838, University of Wyoming, Laramie, Wyoming 82071, United States
| | - Ade Lau
- Department of Chemistry, Box 3838, University of Wyoming, Laramie, Wyoming 82071, United States
| | - Navamoney Arulsamy
- Department of Chemistry, Box 3838, University of Wyoming, Laramie, Wyoming 82071, United States
| | - Dean M. Roddick
- Department of Chemistry, Box 3838, University of Wyoming, Laramie, Wyoming 82071, United States
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48
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Zhao Q, Gong L, Xu C, Zhu J, He X, Xia H. Stable Iso-osmabenzenes from a Formal [3+3] Cycloaddition Reaction of Metal Vinylidene with Alkynols. Angew Chem Int Ed Engl 2011; 50:1354-8. [DOI: 10.1002/anie.201006442] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Indexed: 11/10/2022]
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49
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Zhao Q, Gong L, Xu C, Zhu J, He X, Xia H. Stable Iso-osmabenzenes from a Formal [3+3] Cycloaddition Reaction of Metal Vinylidene with Alkynols. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201006442] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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50
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Leonard NG, Williard PG, Bernskoetter WH. Synthesis and coordination chemistry of organoiridium complexes supported by an anionic tridentate ligand. Dalton Trans 2011; 40:4300-6. [DOI: 10.1039/c1dt10037h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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