1
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Portugués A, López‐García I, Jiménez‐Bernad J, Bautista D, Gil‐Rubio J. Photoinitiated Reactions of Haloperfluorocarbons with Gold(I) Organometallic Complexes: Perfluoroalkyl Gold(I) and Gold(III) Complexes. Chemistry 2019; 25:15535-15547. [DOI: 10.1002/chem.201903058] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Alejandro Portugués
- Departamento de Química InorgánicaFacultad de QuímicaUniversidad de Murcia Campus de Espinardo 30100 Murcia Spain
| | - Inmaculada López‐García
- Departamento de Química InorgánicaFacultad de QuímicaUniversidad de Murcia Campus de Espinardo 30100 Murcia Spain
| | - Javier Jiménez‐Bernad
- Departamento de Química InorgánicaFacultad de QuímicaUniversidad de Murcia Campus de Espinardo 30100 Murcia Spain
| | - Delia Bautista
- ACTI.Universidad de Murcia Campus de Espinardo 30100 Murcia Spain
| | - Juan Gil‐Rubio
- Departamento de Química InorgánicaFacultad de QuímicaUniversidad de Murcia Campus de Espinardo 30100 Murcia Spain
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2
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Successive Activation of C–H and C–O Bonds of Vinyl Ethers by a Diphosphine and Hydrido-Bridged Diiridium Complex. INORGANICS 2019. [DOI: 10.3390/inorganics7100121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The reaction of [(Cp*Ir)2(μ-dmpm)(μ-H)][OTf] (2) [Cp* = η5-C5Me5, dmpm = bis(dimethylphosphino)methane] with 2,3-dihydrofuran gives [(Cp*IrH)2(μ-dmpm){μ-(2,3-dihydrofuranyl)}][OTf] (3) in an isolated yield of 70% via the C–H bond activation at the 5-position of 2,3-dihydrofuran. Complex 3 is slowly converted into [(Cp*Ir)2(μ-dmpm)(μ-C=C(H)CH2CH2OH)][OTf] (4) quantitatively via the proton-mediated C–O bond activation. The reaction of 2 with ethyl vinyl ether gives [(Cp*Ir)2(μ-dmpm)(μ-CH=CH2)][OTf] (5) in the isolated yield of 64% via the successive activation of C–H and C–O bonds.
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3
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Zhou Q, Fu Z, Yu L, Wang J. Transition‐Metal‐Free [4+1] Cycloaddition for the Synthesis of 1,2,3‐Triazole from α,α‐Difluoro‐
N
‐Tosylhydrazone and Amine through C‐F Bond Cleavage. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800514] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Qi Zhou
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of ChemistryPeking University Beijing 100871 China
| | - Zihao Fu
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of ChemistryPeking University Beijing 100871 China
| | - Lefei Yu
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of ChemistryPeking University Beijing 100871 China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of ChemistryPeking University Beijing 100871 China
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4
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Yan J, Shi K, Zhao C, Ding L, Jiang S, Yang L, Zhong G. NHC-catalyzed [4+2] cycloaddition reactions for the synthesis of 3′-spirocyclic oxindoles via a C–F bond cleavage protocol. Chem Commun (Camb) 2018; 54:1567-1570. [DOI: 10.1039/c7cc08048d] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A chiral NHC-catalyzed cycloaddition of γ-fluoroenals is developed. The nucleophilic γ-carbon generated via C–F bond cleavage undergoes highly enantioselective cycloaddition (up to >99% ee) to isatins and provides 3′-spirocyclic oxindoles in good yields (up to 91%).
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Affiliation(s)
- Jun Yan
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310018
- China
| | - Kuangxi Shi
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310018
- China
| | - Chengtao Zhao
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310018
- China
| | - Liyuan Ding
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310018
- China
| | - Shengsheng Jiang
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310018
- China
| | - Limin Yang
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310018
- China
| | - Guofu Zhong
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310018
- China
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5
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Zheng T, Li J, Zhang S, Xue B, Sun H, Li X, Fuhr O, Fenske D. Selective C–F and C–H Activation of Fluoroarenes by Fe(PMe3)4 and Catalytic Performance of Iron Hydride in Hydrosilylation of Carbonyl Compounds. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00546] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Tingting Zheng
- School
of Chemistry and Chemical Engineering, Key Laboratory of Special Functional
Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
- Department
of Chemistry, Capital Normal University, 100037 Beijing, People’s Republic of China
| | - Junye Li
- School
of Chemistry and Chemical Engineering, Key Laboratory of Special Functional
Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
- Department
of Pharmaceutical Engineering, Heze University, DaXue Road, 274015 Heze, People’s Republic of China
| | - Shumiao Zhang
- School
of Chemistry and Chemical Engineering, Key Laboratory of Special Functional
Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
- School
of Chemistry and Chemical Engineering, Qufu Normal University, 273165 Qufu, People’s Republic of China
| | - Benjing Xue
- School
of Chemistry and Chemical Engineering, Key Laboratory of Special Functional
Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
| | - Hongjian Sun
- School
of Chemistry and Chemical Engineering, Key Laboratory of Special Functional
Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
| | - Xiaoyan Li
- School
of Chemistry and Chemical Engineering, Key Laboratory of Special Functional
Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
| | - Olaf Fuhr
- Institut
für Nanotechnologie (INT) und Karlsruher Nano-Micro-Facility
(KNMF), Karlsruher Institut für Technologie (KIT), Hermann-von-Helmholtz-Platz
1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Dieter Fenske
- Institut
für Nanotechnologie (INT) und Karlsruher Nano-Micro-Facility
(KNMF), Karlsruher Institut für Technologie (KIT), Hermann-von-Helmholtz-Platz
1, 76344 Eggenstein-Leopoldshafen, Germany
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6
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Liu X, Wang Z, Zhao X, Fu X. Light induced catalytic hydrodefluorination of perfluoroarenes by porphyrin rhodium. Inorg Chem Front 2016. [DOI: 10.1039/c5qi00269a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photocatalytic hydrodefluorination of a series of perfluoroarenes by rhodium porphyrin complexes was described. The key intermediate (por)Rh-C6F4R underwent fast photo-cleavage of Rh–C bonds to produce hydrodefluorination products.
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Affiliation(s)
- Xu Liu
- Beijing National Laboratory for Molecular Sciences
- State Key Lab of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing
| | - Zikuan Wang
- Beijing National Laboratory for Molecular Sciences
- State Key Lab of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing
| | - Xianyuan Zhao
- Beijing National Laboratory for Molecular Sciences
- State Key Lab of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing
| | - Xuefeng Fu
- Beijing National Laboratory for Molecular Sciences
- State Key Lab of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing
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7
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Yuan J, Bourgeois CJ, Rheingold AL, Hughes RP. Synthesis, structure, and reactivity of iridium perfluorocarbene complexes: regio- and stereo-specific addition of HCl across a metal carbon double bond. Dalton Trans 2015. [PMID: 26211437 DOI: 10.1039/c5dt02275d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Reductive activation of an α-fluorine in the perfluoroalkyl complexes Cp*(L)(i)Ir-CF2RF using Mg/graphite leads to perfluorocarbene complexes Cp*(L)Ir[double bond, length as m-dash]CFRF (L = CO, PMe3; RF = CF3, C2F5, C6F5). New complexes E-Cp*(PMe3)Ir[double bond, length as m-dash]CFC2F5 and E-Cp*(CO)Ir[double bond, length as m-dash]CFC6F5 have been characterized by single crystal X-ray diffraction studies, and a comparison of metric parameters with previously reported analogues is reported. Experimental NMR and computational DFT (B3LYP/LACV3P**++) studies agree that for Ir[double bond, length as m-dash]CFRF complexes (RF = CF3, CF2CF3) the thermodynamic preference for the E or Z isomer depends on the steric requirements of ligand L; when L = CO the Z-isomer (F cis to Cp*) is preferred and for L = PMe3 the E-isomer is preferred. When reduction of the precursors is carried out in the dark the reaction is completely selective to produce E- or Z-isomers. Exposure of solutions of these compounds to ambient light results in slow conversion to a photostationary non-equilibrium mixture of E and Z isomers. In the dark, these E/Z mixtures convert thermally to their preferred E or Z equilibrium geometries in an even slower reaction. A study of the temperature dependent kinetics of this dark transformation allows ΔG(‡)298 for rotation about the Ir[double bond, length as m-dash]CFCF3 double bond to be experimentally determined as 25 kcal mol(-1); a DFT/B3LYP/LACV3P**++ calculation of this rotation barrier is in excellent agreement (27 kcal mol(-1)) with the experimental value. Reaction of HCl with toluene solutions of Cp*(L)Ir[double bond, length as m-dash]CFRF (L = CO, PMe3) or Cp*(CO)Ir[double bond, length as m-dash]C(CF3)2 at low temperature resulted in regiospecific addition of HCl across the metal carbon double bond, ultimately yielding Cp*(L)Ir(CHFRF)Cl and Cp*(CO)Ir[CH(CF3)2]Cl. Reaction of HCl with single E or Z diastereomers of Cp*(L)Ir[double bond, length as m-dash]CFRF gives stereospecific cis-addition to give single diastereomers of Cp*Ir(L)(CHFRF)Cl; addition of HCl to several different E/Z ratios of Cp*(L)Ir[double bond, length as m-dash]CFRF affords ratios of diastereomeric products Cp*(L)Ir(CHFRF)Cl identical to the original ratio of starting material isomers. The addition of HCl is therefore demonstrated to be unambiguously regio- and stereo-specific. The observed product regiochemistry of addition of HCl to Ir[double bond, length as m-dash]CF2, Ir[double bond, length as m-dash]CFRF, and Ir[double bond, length as m-dash]C(CF3)2 ligands is the same and is not dependent on the ground state energy preference (singlet or triplet) for the free perfluorocarbene. DFT calculations on model HCl addition reactions indicate that this regiochemistry is strongly preferred thermodynamically, but predict that in H(δ+)-Cl(δ-) addition to Cp(PH3)Ir[double bond, length as m-dash]CF2, H(δ+) attack at Ir has a lower energy transition state, while for Cp(PH3)Ir[double bond, length as m-dash]CFCF3 and Cp(PH3)Ir[double bond, length as m-dash]C(CF3)2, H(δ+) attack at C is the kinetically preferred pathway. The carbene carbon atoms in Ir[double bond, length as m-dash]CFCF3 and Ir[double bond, length as m-dash]C(CF3)2 complexes are unambiguously basic towards HCl, while in the Ir[double bond, length as m-dash]CF2 analogues the carbene carbon is less basic than its Ir partner, and the eventual regiochemistry of HCl addition arises from thermodynamic control.
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Affiliation(s)
- Jian Yuan
- Department of Chemistry, 6128 Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, USA.
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8
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Ahrens T, Kohlmann J, Ahrens M, Braun T. Functionalization of fluorinated molecules by transition-metal-mediated C-F bond activation to access fluorinated building blocks. Chem Rev 2014; 115:931-72. [PMID: 25347593 DOI: 10.1021/cr500257c] [Citation(s) in RCA: 610] [Impact Index Per Article: 61.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Theresia Ahrens
- Humboldt-Universität zu Berlin , Department of Chemistry, Brook-Taylor-Straße 2, 12489 Berlin, Germany
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9
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Whittlesey MK, Peris E. Catalytic Hydrodefluorination with Late Transition Metal Complexes. ACS Catal 2014. [DOI: 10.1021/cs500887p] [Citation(s) in RCA: 127] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
| | - Eduardo Peris
- Departamento de
Química Inorgánica y Orgánica, Universitat Jaume I, Avda. Sos Baynat s/n, 12071 Castellón, Spain
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10
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Nihei T, Yokotani S, Ishihara T, Konno T. Stereocontrolled generation of nucleophilic (Z)- or (E)-α-fluoroalkenylchromium reagents via carbon–fluorine bond activation: highly stereoselective synthesis of (E)- or (Z)-β-fluoroallylic alcohols. Chem Commun (Camb) 2014; 50:1543-5. [DOI: 10.1039/c3cc47219a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Li J, Zheng T, Sun H, Li X. Selectively catalytic hydrodefluorination of perfluoroarenes by Co(PMe3)4 with sodium formate as reducing agent and mechanism study. Dalton Trans 2013; 42:13048-53. [DOI: 10.1039/c3dt50409c] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Li J, Zheng T, Sun H, Xu W, Li X. Selective C–F/C–H bond activation of fluoroarenes by cobalt complex supported with phosphine ligands. Dalton Trans 2013; 42:5740-8. [DOI: 10.1039/c3dt33074e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Braun T, Wehmeier F. C–F Bond Activation of Highly Fluorinated Molecules at Rhodium: From Model Reactions to Catalysis. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201001184] [Citation(s) in RCA: 132] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Thomas Braun
- Humboldt‐Universität zu Berlin, Institut für Chemie, Brook‐Taylor‐Str. 2 12489 Berlin, Germany, Fax: +49‐30‐2093‐6966
| | - Falk Wehmeier
- Humboldt‐Universität zu Berlin, Institut für Chemie, Brook‐Taylor‐Str. 2 12489 Berlin, Germany, Fax: +49‐30‐2093‐6966
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14
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Hughes RP. Fluorine as a ligand substituent in organometallic chemistry: A second chance and a second research career. J Fluor Chem 2010. [DOI: 10.1016/j.jfluchem.2010.06.014] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Teltewskoi M, Panetier J, Macgregor S, Braun T. A Highly Reactive Rhodium(I)-Boryl Complex as a Useful Tool for CH Bond Activation and Catalytic CF Bond Borylation. Angew Chem Int Ed Engl 2010; 49:3947-51. [DOI: 10.1002/anie.201001070] [Citation(s) in RCA: 156] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Teltewskoi M, Panetier J, Macgregor S, Braun T. A Highly Reactive Rhodium(I)-Boryl Complex as a Useful Tool for CH Bond Activation and Catalytic CF Bond Borylation. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201001070] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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Hughes RP. Conversion of Carbon–Fluorine Bonds α to Transition Metal Centers to Carbon–Hydrogen, Carbon–Carbon, and Carbon–Heteroatom Bonds. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900816] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Russell P. Hughes
- Department of Chemistry, Dartmouth College, 6128 Burke Laboratories, Hanover, NH 03755, USA
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18
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Matsubara K, Ishibashi T, Koga Y. C−F Bond-Cleavage Reactions of Fluoroalkanes with Magnesium Reagents and without Metal Catalysts. Org Lett 2009; 11:1765-8. [DOI: 10.1021/ol900208n] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kouki Matsubara
- Department of Chemistry, Faculty of Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
| | - Tomoka Ishibashi
- Department of Chemistry, Faculty of Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
| | - Yuji Koga
- Department of Chemistry, Faculty of Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
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19
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Vicente J, Gil-Rubio J, Guerrero-Leal J, Bautista D. Synthesis of rhodium(i) and rhodium(iii) perfluoroalkyl complexes from [Rh(μ-OH)(COD)]2. Dalton Trans 2009:3854-66. [DOI: 10.1039/b822738a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Espinet P, Albéniz AC, Casares JA, Martínez-Ilarduya JM. 19F NMR in organometallic chemistry. Coord Chem Rev 2008. [DOI: 10.1016/j.ccr.2007.12.024] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Schaub T, Fischer P, Steffen A, Braun T, Radius U, Mix A. C−F Activation of Fluorinated Arenes using NHC-Stabilized Nickel(0) Complexes: Selectivity and Mechanistic Investigations. J Am Chem Soc 2008; 130:9304-17. [DOI: 10.1021/ja074640e] [Citation(s) in RCA: 209] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Thomas Schaub
- Institut für Anorganische Chemie der Universität Karlsruhe, 76131 Karlsruhe, Germany, Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin, Germany, and Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Peter Fischer
- Institut für Anorganische Chemie der Universität Karlsruhe, 76131 Karlsruhe, Germany, Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin, Germany, and Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Andreas Steffen
- Institut für Anorganische Chemie der Universität Karlsruhe, 76131 Karlsruhe, Germany, Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin, Germany, and Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Thomas Braun
- Institut für Anorganische Chemie der Universität Karlsruhe, 76131 Karlsruhe, Germany, Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin, Germany, and Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Udo Radius
- Institut für Anorganische Chemie der Universität Karlsruhe, 76131 Karlsruhe, Germany, Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin, Germany, and Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Andreas Mix
- Institut für Anorganische Chemie der Universität Karlsruhe, 76131 Karlsruhe, Germany, Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin, Germany, and Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
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22
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Gong L, Lin Y, Wen TB, Zhang H, Zeng B, Xia H. Formation of Four Conjugated Osmacyclic Species in a One-Pot Reaction. Organometallics 2008. [DOI: 10.1021/om8001558] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Lei Gong
- Department of Chemistry, College of Chemistry and Chemical Engineering, and State Key Laboratory for Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, 361005, People's Republic of China
| | - Yumei Lin
- Department of Chemistry, College of Chemistry and Chemical Engineering, and State Key Laboratory for Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, 361005, People's Republic of China
| | - Ting Bin Wen
- Department of Chemistry, College of Chemistry and Chemical Engineering, and State Key Laboratory for Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, 361005, People's Republic of China
| | - Hong Zhang
- Department of Chemistry, College of Chemistry and Chemical Engineering, and State Key Laboratory for Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, 361005, People's Republic of China
| | - Birong Zeng
- Department of Chemistry, College of Chemistry and Chemical Engineering, and State Key Laboratory for Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, 361005, People's Republic of China
| | - Haiping Xia
- Department of Chemistry, College of Chemistry and Chemical Engineering, and State Key Laboratory for Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, 361005, People's Republic of China
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23
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Liu J, Wu X, Iggo JA, Xiao J. Half-sandwich iridium complexes—Synthesis and applications in catalysis. Coord Chem Rev 2008. [DOI: 10.1016/j.ccr.2008.01.015] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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24
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Rieth RD, Brennessel WW, Jones WD. Activation of Aromatic, Aliphatic, and Olefinic Carbon–Fluorine Bonds Using Cp*2HfH2. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200600802] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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25
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Braun T, Noveski D, Ahijado M, Wehmeier F. Hydrodefluorination of pentafluoropyridine at rhodium using dihydrogen: detection of unusual rhodium hydrido complexes. Dalton Trans 2007:3820-5. [PMID: 17712449 DOI: 10.1039/b706846h] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The pentafluoropyridyl complex [Rh(4-C5NF4)(PEt3)3] (3) reacts with H2 to give initially the dihydrido complex cis-mer-[Rh(H)2(4-C5NF4)(PEt3)3] (6). Within a few hours 2,3,5,6-tetrafluoropyridine as well as two rhodium(III) complexes mer-[Rh(H)3(PEt3)3] (mer-) and fac-[Rh(H)3(PEt3)3] (fac-) are formed. A catalytic C-F activation process for the formation of 2,3,5,6-tetrafluoropyridine starting from pentafluoropyridine and dihydrogen using 3 as a catalyst has been developed. Reaction of [RhH(PEt3)3] (1) with hydrogen affords fac-[Rh(H)3(PEt3)3] (fac-7) and mer-[Rh(H)3(PEt3)3] (mer-7) in a ratio of 1 : 7.25 at 193 K. The latter complex represents the first mononuclear rhodium compound bearing trans-hydrides.
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Affiliation(s)
- Thomas Braun
- Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Strasse 2, 12489 Berlin, Germany.
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Braun T, Izundu J, Steffen A, Neumann B, Stammler HG. Reactivity of a palladium fluoro complex towards silanes and Bu3SnCHCH2: catalytic derivatisation of pentafluoropyridine based on carbon–fluorine bond activation reactions. Dalton Trans 2006:5118-23. [PMID: 17077884 DOI: 10.1039/b608410a] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The chloro and azido complexes trans-[PdCl(4-C5NF4)(PiPr3)2] (3) and trans-[Pd(N3)(4-C5NF4)(PiPr3)2] (4) can be prepared by reaction of [PdF(4-C5NF4)(PiPr3)2] (2) with Et3SiCl or MeSiN3, respectively. In contrast, reactions of 2 with Ph3SiH or Me2FSiSiFMe2 give the products of reductive elimination 2,3,5,6-tetrafluoropyridine (5) or 4-(fluorodimethylsilyl)tetrafluoropyridine (6) as well as [Pd(PiPr3)2] (1). In a catalytic experiment, pentafluoropyridine can be converted with Ph3SiH into 5 in 62% yield, when 10% of 2 is employed as catalyst. Treatment of trans-[PdF(4-C5NF4)(PiPr3)2] (2) with Bu3SnCH=CH2 in THF at 50 degrees C results in the formation of [Pd(PiPr3)2] (1) and 4-vinyltetrafluoropyridine (7). Complex 2 is also active as a catalyst towards a Stille cross-coupling reaction of pentafluoropyridine with Bu3SnCH=CH2 to give 4-vinyltetrafluoropyridine (7) with a TON of 6. The molecular structure of the complex 3 has been determined by X-ray crystallography.
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Affiliation(s)
- Thomas Braun
- Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany.
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Steffen A, Sladek MI, Braun T, Neumann B, Stammler HG. Catalytic C−C Coupling Reactions at Nickel by C−F Activation of a Pyrimidine in the Presence of a C−Cl Bond: The Crucial Role of Highly Reactive Fluoro Complexes. Organometallics 2005. [DOI: 10.1021/om050080l] [Citation(s) in RCA: 125] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andreas Steffen
- Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
| | - Marianna I. Sladek
- Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
| | - Thomas Braun
- Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
| | - Beate Neumann
- Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
| | - Hans-Georg Stammler
- Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
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