1
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Nikolaevskii SA, Petrov PA, Sukhikh TS, Yambulatov DS, Kiskin MA, Sokolov MN, Eremenko IL. Simple synthetic protocol to obtain 3d-4f-heterometallic carboxylate complexes of N-heterocyclic carbenes. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119643] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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2
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Ahmida A, Elmagbari FM, Egold H, Flörke U, Henkel G. NHC-phosphane rhodium complexes and their reaction with oxygen. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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3
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Convenient synthetic access to fluorescent rhodacyclopentadienes via ligand exchange reactions. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.02.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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4
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Yan J, Han Z, Zhang D, Liu C. Theoretical study of the mechanism of two successive N-methylene C–H bond activations on a phosphine-tethered N-heterocyclic carbene on a triruthenium carbonyl cluster. RSC Adv 2016. [DOI: 10.1039/c6ra19787f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
DFT calculations clarify the mechanism details of successive N-methylene C–H bond activations on N-heterocyclic triruthenium carbene complexes.
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Affiliation(s)
- Jing Yan
- Key Lab of Colloid and Interface Chemistry
- Ministry of Education
- Institute of Theoretical Chemistry
- Shandong University
- Jinan
| | - Zhe Han
- New Material Institute of Shandong Academy of Sciences
- Jinan 250014
- P. R. China
| | - Dongju Zhang
- Key Lab of Colloid and Interface Chemistry
- Ministry of Education
- Institute of Theoretical Chemistry
- Shandong University
- Jinan
| | - Chengbu Liu
- Key Lab of Colloid and Interface Chemistry
- Ministry of Education
- Institute of Theoretical Chemistry
- Shandong University
- Jinan
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5
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Neilson BM, Bielawski CW. Photoswitchable Metal-Mediated Catalysis: Remotely Tuned Alkene and Alkyne Hydroborations. Organometallics 2013. [DOI: 10.1021/om400348h] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Bethany M. Neilson
- Department of Chemistry
and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Christopher W. Bielawski
- Department of Chemistry
and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, United States
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6
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Zenkina OV, Keske EC, Kochhar GS, Wang R, Crudden CM. Heteroleptic rhodium NHC complexes with pyridine-derived ligands: synthetic accessibility and reactivity towards oxygen. Dalton Trans 2013. [DOI: 10.1039/c2dt32095a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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7
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Gharaati S, Moghadam M, Tangestaninejad S, Mirkhani V, Mohammadpoor-Baltork I. Efficient and selective olefination of aldehydes with ethyl diazoacetate catalyzed by high-valent tin(IV) porphyrins. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.08.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Singh R, Vince R. 2-Azabicyclo[2.2.1]hept-5-en-3-one: Chemical Profile of a Versatile Synthetic Building Block and its Impact on the Development of Therapeutics. Chem Rev 2012; 112:4642-86. [DOI: 10.1021/cr2004822] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Rohit Singh
- Center for Drug Design, Academic Health Center, University of Minnesota, 516 Delaware Street Southeast,
Minneapolis, MN 55455, United States
| | - Robert Vince
- Center for Drug Design, Academic Health Center, University of Minnesota, 516 Delaware Street Southeast,
Minneapolis, MN 55455, United States
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9
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Haque RA, Ahmed SA, Zetty ZH, Hemamalini M, Fun HK. 1,3-Bis(2-cyano-benz-yl)imidazolium bromide. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o3462. [PMID: 22199938 PMCID: PMC3239090 DOI: 10.1107/s1600536811048951] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Accepted: 11/17/2011] [Indexed: 12/03/2022]
Abstract
In the title salt, C19H15N4+·Br−, the central imidazole ring makes dihedral angles of 83.1 (2) and 87.6 (2)° with the terminal benzene rings. The dihedral angle between the terminal benzene rings is 6.77 (19)°; the cyanide substituents have an anti orientation. In the crystal, the cations and anions are linked via C—H⋯N and C—H⋯Br hydrogen bonds, forming sheets lying parallel to the ac plane.
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10
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Wang T, Hu Y, Zhang S. A novel and efficient method for the olefination of carbonyl compounds with Grignard reagents in the presence of diethyl phosphite. Org Biomol Chem 2010; 8:2312-5. [DOI: 10.1039/c001931c] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Weinberg DR, Hazari N, Labinger JA, Bercaw JE. Iridium(I) and Iridium(III) Complexes Supported by a Diphenolate Imidazolyl-Carbene Ligand. Organometallics 2009. [DOI: 10.1021/om900803r] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- David R. Weinberg
- Arnold and Mabel Beckman Laboratories of Chemical Synthesis, California Institute of Technology, Pasadena, California 91125
| | - Nilay Hazari
- Arnold and Mabel Beckman Laboratories of Chemical Synthesis, California Institute of Technology, Pasadena, California 91125
| | - Jay A. Labinger
- Arnold and Mabel Beckman Laboratories of Chemical Synthesis, California Institute of Technology, Pasadena, California 91125
| | - John E. Bercaw
- Arnold and Mabel Beckman Laboratories of Chemical Synthesis, California Institute of Technology, Pasadena, California 91125
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12
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Singh AK, Dwivedi SD, Dubey SK, Singh SK, Sharma S, Pandey DS, Zou RQ, Xu Q. Synthesis and reactivity of homo-bimetallic Rh and Ir complexes containing a N,O-donor Schiff base. J Organomet Chem 2009. [DOI: 10.1016/j.jorganchem.2009.05.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Sun H, Yu XY, Marcazzan P, Patrick BO, James BR. Rhodium(I)–(N-heterocyclic carbene)–diphosphine complexes. CAN J CHEM 2009. [DOI: 10.1139/v09-118] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Reactions of [RhCl(COE)(IPr)]2 (1) and [RhCl(COE)(IMes)]2 (2) (COE = cyclooctene; IPr = N,N′-bis(2,6-diisopropylphenyl)imidazolin-2-ylidene; IMes = N,N′-bis(2,4,6-trimethylphenyl)imidazolin-2-ylidene) with the diphosphines Ph2P(CH2)nPPh2 and 1,2-bis(diphenylphosphino)benzene (dppbz) give the N-heterocyclic carbene (NHC) – diphosphine – rhodium(I) complexes: RhCl(NHC)[Ph2P(CH2)nPPh2] [NHC = IPr, n = 1 (3); NHC = IMes, n = 1 (4); NHC = IPr, n = 2 (5); NHC = IMes, n = 2 (6); NHC = IPr, n = 4 (7); NHC = IMes, n = 4 (8)] and RhCl(NHC)(dppbz) [NHC = IPr (9); NHC = IMes (10)]. All the complexes are characterized by 1H, 31P{1H}, and 13C{1H} NMR spectroscopy, elemental analysis, and mass spectrometry. Complexes 3, 7, and 9 are also characterized crystallographically. In benzene solution, the complexes decompose in the presence of O2 with formation of the diphosphine dioxide, whereas reaction with CO leads to replacement of the NHC ligand to give known carbonyl–diphosphine complexes.
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Affiliation(s)
- Hongsui Sun
- Department of Chemistry, The University of British Columbia, Vancouver, BC V6T 1Z1, Canada
| | - Xiao-Yan Yu
- Department of Chemistry, The University of British Columbia, Vancouver, BC V6T 1Z1, Canada
| | - Paolo Marcazzan
- Department of Chemistry, The University of British Columbia, Vancouver, BC V6T 1Z1, Canada
| | - Brian O. Patrick
- Department of Chemistry, The University of British Columbia, Vancouver, BC V6T 1Z1, Canada
| | - Brian R. James
- Department of Chemistry, The University of British Columbia, Vancouver, BC V6T 1Z1, Canada
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14
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Dastgir S, Coleman KS, Cowley AR, Green MLH. Stable crystalline annulated diaminocarbenes: coordination with rhodium(I), iridium(I) and catalytic hydroformylation studies. Dalton Trans 2009:7203-14. [PMID: 20449164 DOI: 10.1039/b905729c] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stable annulated diaminocarbene ligands 7,9-bis(2,4,6-trimethylphenyl)-6b,9a-dihydroace naphtha[1,2-d]imidazolin-2-ylidene and 7,9-bis(2,6-diisopropylphenyl)-6b,9a-dihydroacenaphtho[1,2-d]imidazolin-2-ylidene; designated as (BIAN-SIMes, 5a,) and (BIAN-SIPr, 5b), respectively, have been prepared. The base dependent decomposition of imidazolinium salts via ring opening at the backbone was also observed. The corresponding rhodium(I) and iridum(I) complexes (4-1,5-COD)M(BIAN-SIMes)Cl and (4-1,5-COD)M(BIAN-SIPr)Cl; M= Rh (6a, 6b) and Ir (7a, 7b) have been synthesised by the reaction of free carbene with [M(4-1,5-COD)(-Cl)]2; where M= Rh, Ir. The cationic Ir(I) complexes [(4-1,5-COD)Ir(BIAN-SIMes)Py]BF4 8a and [(4-1,5-COD)Ir(BIAN -SIPr)Py]PF6 8b have also been synthesised. Compounds 4b, 5a, 6a, 6b, 7b and 8b have been structurally characterised. The catalytic activities for the rhodium(I) complexes 6a and 6b were evaluated for the hydroformylation of 1-octene.
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Affiliation(s)
- Sarim Dastgir
- Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, UKOX1 3QR.
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15
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Yu XY, Sun H, Patrick BO, James BR. N-Heterocyclic Carbene Rhodium Complexes and Their Reactions with H2and with CO. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200801169] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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16
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Abstract
A novel catalytic sequence aerobic oxidation-olefination has been developed. A single and inexpensive copper catalyst provides a large range of olefins from alcohols in good to excellent yields. The reaction exhibits excellent functional group compatibility, and the nonbasic reaction conditions allow the transformation of chiral substrates without racemization.
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Affiliation(s)
- Michaël Davi
- Departement de Chimie, Universite de Montreal, 2900 Boul. Edouard Montpetit, Montreal, Quebec, Canada H3T 1J4
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17
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Binobaid A, Iglesias M, Beetstra DJ, Kariuki B, Dervisi A, Fallis IA, Cavell KJ. Expanded ring and functionalised expanded ring N-heterocyclic carbenes as ligands in catalysis. Dalton Trans 2009:7099-112. [DOI: 10.1039/b909834h] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Page MJ, Wagler J, Messerle BA. Pyrazolyl-N-heterocyclic carbene complexes of rhodium as hydrogenation catalysts: The influence of ligand steric bulk on catalyst activity. Dalton Trans 2009:7029-38. [DOI: 10.1039/b906724h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Yang WH, Lee CS, Pal S, Chen YN, Hwang WS, Lin IJ, Wang JC. Novel Ag(I), Pd(II), Ni(II) complexes of N,N′-bis-(2,2-diethoxyethyl)imidazole-2-ylidene: Synthesis, structures, and their catalytic activity towards Heck reaction. J Organomet Chem 2008. [DOI: 10.1016/j.jorganchem.2008.09.017] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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21
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Davi M, Lebel H. One-pot approach for the synthesis of trans-cyclopropyl compounds from aldehydes. Application to the synthesis of GPR40 receptor agonists. Chem Commun (Camb) 2008:4974-6. [PMID: 18931757 DOI: 10.1039/b810708d] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel multicatalytic one-pot process providing trans-cyclopropyl compounds from corresponding aldehydes has been developed and applied to the synthesis of GPR40 small molecule agonists.
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Affiliation(s)
- Michaël Davi
- Département de Chimie, Université de Montréal, 2900 Boul. Edouard Montpetit, Montréal, Québec, Canada H3T 1J4
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22
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Lebel H, Ladjel C, Bélanger-Gariépy F, Schaper F. Redetermination of the O–O bond length in the dioxygen-adduct of Vaska’s complex. J Organomet Chem 2008. [DOI: 10.1016/j.jorganchem.2008.05.025] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Lebel H, Davi M, Stokłosa GT. Transition-Metal-Catalyzed Chemoselective Methylenation of Dicarbonyl Substrates. J Org Chem 2008; 73:6828-30. [DOI: 10.1021/jo800777w] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hélène Lebel
- Département de Chimie, Université de Montréal, Pavillon Roger Gaudry, 2900 Boul. Édouard-Montpetit, Montréal, Québec, Canada H3T 1J4
| | - Michaël Davi
- Département de Chimie, Université de Montréal, Pavillon Roger Gaudry, 2900 Boul. Édouard-Montpetit, Montréal, Québec, Canada H3T 1J4
| | - Grzegorz T. Stokłosa
- Département de Chimie, Université de Montréal, Pavillon Roger Gaudry, 2900 Boul. Édouard-Montpetit, Montréal, Québec, Canada H3T 1J4
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24
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Affiliation(s)
- Hélène Lebel
- Département de Chimie, Université de Montréal, 2900, Boul Edouard Montpetit, Montréal, Québec, H3T 1J4 Canada
| | - Chehla Ladjel
- Département de Chimie, Université de Montréal, 2900, Boul Edouard Montpetit, Montréal, Québec, H3T 1J4 Canada
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25
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Stable Bis(diisopropylamino)cyclopropenylidene (BAC) as Ligand for Transition Metal Complexes. J Organomet Chem 2008; 693:899-904. [PMID: 19255609 DOI: 10.1016/j.jorganchem.2007.11.056] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Several nickel(0), palladium(II), and rhodium(I) complexes have been prepared using for the first time the stable bis(diisopropylamino)cyclopropenylidene (BAC). Based on single crystal X-ray diffraction studies and spectroscopic data, the structural and electronic properties of these complexes are discussed. Moreover, their similarities and differences with the analogous NHC complexes are emphasized.
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26
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Fritschi CB, Wernitz SM, Vogels CM, Shaver MP, Decken A, Bell A, Westcott SA. 4,4,5,5-Tetraphenyl-1,3,2-dioxaborolane: A Bulky Borane for the Transition Metal Catalysed Hydroboration of Alkenes. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200701066] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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27
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Praetorius JM, Crudden CM. N-Heterocyclic carbene complexes of rhodium: structure, stability and reactivity. Dalton Trans 2008:4079-94. [DOI: 10.1039/b802114g] [Citation(s) in RCA: 117] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Lebel H, Ladjel C, Bréthous L. Palladium-Catalyzed Cross-Coupling Reactions in One-Pot Multicatalytic Processes. J Am Chem Soc 2007; 129:13321-6. [DOI: 10.1021/ja0733235] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hélène Lebel
- Contribution from the Département de Chimie, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, Québec, Canada H3C 3J7
| | - Chehla Ladjel
- Contribution from the Département de Chimie, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, Québec, Canada H3C 3J7
| | - Lise Bréthous
- Contribution from the Département de Chimie, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, Québec, Canada H3C 3J7
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29
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Herrmann W, Frey G, Herdtweck E, Steinbeck M. Synthesis and Characterization of N-Heterocyclic Carbene Substituted Phosphine and Phosphite Rhodium Complexes and their Catalytic Properties in Hydrogenation Reactions. Adv Synth Catal 2007. [DOI: 10.1002/adsc.200700079] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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30
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Murelli RP, Snapper ML. Ruthenium-Catalyzed Tandem Cross-Metathesis/Wittig Olefination: Generation of Conjugated Dienoic Esters from Terminal Olefins. Org Lett 2007; 9:1749-52. [PMID: 17397176 DOI: 10.1021/ol070445t] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] In the presence of ruthenium-based olefin metathesis catalysts and triphenylphosphine, alpha,beta-unsaturated aldehydes can be olefinated with diazoacetates. This ruthenium-catalyzed transformation has been employed in tandem with olefin cross-metathesis to convert terminal olefins into 1,3-dienoic esters in a single operation.
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Affiliation(s)
- Ryan P Murelli
- Merkert Chemistry Center, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467-3860, USA
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31
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Ahmed M, Buch C, Routaboul L, Jackstell R, Klein H, Spannenberg A, Beller M. Hydroaminomethylation with Novel Rhodium–Carbene complexes: An Efficient Catalytic Approach to Pharmaceuticals. Chemistry 2007; 13:1594-601. [PMID: 17091522 DOI: 10.1002/chem.200601155] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Starting from [{Rh(cod)Cl}(2)] and 1,3-dimesitylimidazole-2-ylidenes the novel [RhCl(cod)(carbene)] complexes 1-5 have been synthesized, characterized, and tested in the hydroaminomethylation of aromatic olefins. The influence of different ligands and reaction parameters on the catalytic activity was investigated in detail applying 1,1-diphenylethylene and piperidine as a model system. The scope and limitations of the novel catalysts is shown in the preparation of 16 biologically active 1-amino-3,3-diarylpropenes. In general, high chemo- and regioselectivity as well as good yields of the desired products were achieved.
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Affiliation(s)
- Moballigh Ahmed
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
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32
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Ray L, Shaikh MM, Ghosh P. Palladium(II) and Gold(I) Complexes of a New O-Functionalized N-Heterocyclic Carbene Ligand: Synthesis, Structures, and Catalytic Application. Organometallics 2007. [DOI: 10.1021/om060834b] [Citation(s) in RCA: 99] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lipika Ray
- Department of Chemistry and National Single Crystal X-ray Diffraction Facility, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Mobin M. Shaikh
- Department of Chemistry and National Single Crystal X-ray Diffraction Facility, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Prasenjit Ghosh
- Department of Chemistry and National Single Crystal X-ray Diffraction Facility, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
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33
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Pedro FM, Santos AM, Baratta W, Kühn FE. Organometallic Ruthenium Complexes: Application in the Olefination of Carbonyl Compounds. Organometallics 2006. [DOI: 10.1021/om060508w] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Filipe M. Pedro
- Department für Chemie der Technischen Universität München, Lichtenbergstrasse 4, D-85747 Garching bei München, Germany, Dipartimento di Scienze e Tecnologie Chimiche, Università di Udine, Via Cotonificio 108, I-33100 Udine, Italy, and Department of Chemistry, Instituto Tecnológico e Nuclear (ITN), Estrada Nacional 10, P-2686-953 Sacavém, Portugal
| | - Ana M. Santos
- Department für Chemie der Technischen Universität München, Lichtenbergstrasse 4, D-85747 Garching bei München, Germany, Dipartimento di Scienze e Tecnologie Chimiche, Università di Udine, Via Cotonificio 108, I-33100 Udine, Italy, and Department of Chemistry, Instituto Tecnológico e Nuclear (ITN), Estrada Nacional 10, P-2686-953 Sacavém, Portugal
| | - Walter Baratta
- Department für Chemie der Technischen Universität München, Lichtenbergstrasse 4, D-85747 Garching bei München, Germany, Dipartimento di Scienze e Tecnologie Chimiche, Università di Udine, Via Cotonificio 108, I-33100 Udine, Italy, and Department of Chemistry, Instituto Tecnológico e Nuclear (ITN), Estrada Nacional 10, P-2686-953 Sacavém, Portugal
| | - Fritz E. Kühn
- Department für Chemie der Technischen Universität München, Lichtenbergstrasse 4, D-85747 Garching bei München, Germany, Dipartimento di Scienze e Tecnologie Chimiche, Università di Udine, Via Cotonificio 108, I-33100 Udine, Italy, and Department of Chemistry, Instituto Tecnológico e Nuclear (ITN), Estrada Nacional 10, P-2686-953 Sacavém, Portugal
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34
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Lebel H, Davi M, Díez-Gonzalez S, Nolan SP. Copper−Carbene Complexes as Catalysts in the Synthesis of Functionalized Styrenes and Aliphatic Alkenes. J Org Chem 2006; 72:144-9. [PMID: 17194093 DOI: 10.1021/jo061781a] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
(NHC)-Cu (NHC = N-heterocyclic carbene) complexes efficiently catalyzed the methylenation of a variety of aliphatic and aromatic aldehydes and ketones in the presence of trimethylsilyldiazomethane, triphenylphosphine, and 2-propanol. The copper catalysts are not only inexpensive compared to rhodium complexes, but they also exhibit better functional group compatibility with aromatic aldehydes and ketones. Indeed very high yields were obtained for the formation of styrenes containing nitro, trifluoromethyl, amino, and ester groups, as well as for pyridine-, pyrrole-, and indole-substituted alkenes.
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Affiliation(s)
- Hélène Lebel
- Département de Chimie, Université de Montréal, PO Box 6128, Station Downtown, Montréal, Québec, Canada, H3C 3J7.
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35
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Ray L, Katiyar V, Raihan MJ, Nanavati H, Shaikh MM, Ghosh P. First Example of a Gold(I)N-Heterocyclic-Carbene-Based Initiator for the Bulk Ring-Opening Polymerization ofL-Lactide. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200600407] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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36
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Samantaray MK, Roy D, Patra A, Stephen R, Saikh M, Sunoj RB, Ghosh P. Experimental and theoretical studies of a silver complex of O-functionalized N-heterocyclic carbene. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2006.05.037] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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37
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Yu XY, Patrick BO, James BR. Rhodium(III) Peroxo Complexes Containing Carbene and Phosphine Ligands. Organometallics 2006. [DOI: 10.1021/om060576i] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiao-Yan Yu
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Brian O. Patrick
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Brian R. James
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
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Samantaray MK, Katiyar V, Roy D, Pang K, Nanavati H, Stephen R, Sunoj RB, Ghosh P. A Cationic (N-Heterocyclic carbene)silver Complex as Catalyst for Bulk Ring-Opening Polymerization ofL-Lactides. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200600209] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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39
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The search for new hydrogenation catalyst motifs based on N-heterocyclic carbene ligands. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2005.10.049] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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40
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Sun W, Yu B, Kühn FE. Ruthenium(II)–salen complexes-catalyzed olefination of aldehydes with ethyl diazoacetate. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.01.055] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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41
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Messerle BA, Page MJ, Turner P. Rhodium(i) and iridium(i) complexes of pyrazolyl-N-heterocyclic carbene ligands. Dalton Trans 2006:3927-33. [PMID: 16896454 DOI: 10.1039/b603455a] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Several Rh(I) and Ir(I) complexes containing an N-heterocyclic carbene-pyrazolyl chelate ligand have been synthesised. Determination of the single-crystal X-ray structure of the Ir(I) complex showed a novel binding mode with the iridium centre coordinated to two ligands via two carbene donors in preference to one ligand forming the entropically favoured chelate. The hydrogenation activity of several of these complexes was investigated along with that of previously synthesised Rh(I) and Ir(I) complexes containing an analogous phosphine-pyrazolyl chelate.
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Affiliation(s)
- Barbara A Messerle
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia.
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42
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Allen DP, Crudden CM, Calhoun LA, Wang R, Decken A. Rhodium N-heterocyclic carbene complexes: Synthesis, structure, NMR studies and catalytic activity. J Organomet Chem 2005. [DOI: 10.1016/j.jorganchem.2005.07.037] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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43
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Huynh HV, Holtgrewe C, Pape T, Koh LL, Hahn E. Synthesis and Structural Characterization of the First Bis(benzimidazolin-2-ylidene) Complexes of Nickel(II). Organometallics 2005. [DOI: 10.1021/om050781i] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Han Vinh Huynh
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore, and Institut für Anorganische und Analytische Chemie der Westfälischen Wilhelms-Universität Münster, Corrensstrasse 36, D-48149 Münster, Germany
| | - Christian Holtgrewe
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore, and Institut für Anorganische und Analytische Chemie der Westfälischen Wilhelms-Universität Münster, Corrensstrasse 36, D-48149 Münster, Germany
| | - Tania Pape
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore, and Institut für Anorganische und Analytische Chemie der Westfälischen Wilhelms-Universität Münster, Corrensstrasse 36, D-48149 Münster, Germany
| | - Lip Lin Koh
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore, and Institut für Anorganische und Analytische Chemie der Westfälischen Wilhelms-Universität Münster, Corrensstrasse 36, D-48149 Münster, Germany
| | - Ekkehardt Hahn
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore, and Institut für Anorganische und Analytische Chemie der Westfälischen Wilhelms-Universität Münster, Corrensstrasse 36, D-48149 Münster, Germany
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Douglas S, Lowe JP, Mahon MF, Warren JE, Whittlesey MK. Synthesis and structural characterisation of rhodium hydride complexes bearing N-heterocyclic carbene ligands. J Organomet Chem 2005. [DOI: 10.1016/j.jorganchem.2005.02.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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45
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Lebel H, Ladjel C. Rhodium-catalyzed cascade reactions: A methylenation–hydroboration homologative process. J Organomet Chem 2005. [DOI: 10.1016/j.jorganchem.2005.03.058] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
[reaction: see text] A rhodium-catalyzed methylenation-hydrogenation cascade process allows the homologation of carbonyl compounds to lead to the corresponding alkanes in high yields.
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Affiliation(s)
- Hélène Lebel
- Département de chimie, Université de Montréal, P.O. Box 6128, Station Downtown, Montréal, Québec, Canada H3C 3J7.
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Chen AC, Allen DP, Crudden CM, Wang R, Decken A. Synthesis, structure determination, and hydroformylation activity of N-heterocyclic carbene complexes of rhodium. CAN J CHEM 2005. [DOI: 10.1139/v05-106] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The effect of ancillary phosphine ligands on the structure and hydroformylation activity of Rh-N-heterocyclic carbene complexes of type [Rh(IMes)(PR3)(CO)Cl] and [Rh(SIMes)(PR3)(CO)Cl] is described. Very high selectivities for the branched isomer (>95:5) were obtained in the hydroformylation of vinylarenes in all cases except for R = OPh. The new complexes were characterized spectroscopically and by X-ray crystallography.Key words: hydroformylation, rhodium, N-heterocyclic carbene, IMes.
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48
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Santos AM, Pedro FM, Yogalekar AA, Lucas IS, Romão CC, Kühn FE. Oxorhenium Complexes as Aldehyde-Olefination Catalysts. Chemistry 2004; 10:6313-21. [PMID: 15526317 DOI: 10.1002/chem.200400296] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Several oxorhenium compounds in the formal oxidation states V and VII are examined as catalysts for the aldehyde-olefination starting from diazo compounds, phosphines, and aldehydes. Of these, [ReMeO2(eta2-alkyne)] complexes provide the simplest catalysts to study, although [ReOCl3(PPh3)2] still remains the most efficient rhenium catalyst for aldehyde-olefination described to date. Prior to the reaction with the Re catalysts the phosphine and the diazo compound react to form a phosphazine. No catalytic reaction occurs in cases where no phosphazine formation is observed. The first step of the catalytic cycle involves the formation of a carbene intermediate by the reaction of phosphazine and catalyst under extrusion of phosphine oxide and dinitrogen. In a second step the carbene reacts with aldehyde under olefin formation and catalyst regeneration. Excess of alkyne as well as the presence of ketones slows down the catalytic reaction. The olefination of 4-nitrobenzaldehyde with diazomalonate is possible with these Re catalysts. In contrast, this reaction does not take place either in the classical Wittig fashion from Ph3P=C(CO2Et)2 and aldehyde or by use of all other catalysts for aldehyde olefination reactions reported to date. Catalytic ylide formation from diazo compounds seems therefore not to be the only pathway through which catalytic aldehyde-olefination reactions can proceed.
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Affiliation(s)
- Ana M Santos
- Lehrstuhl für Anorganisch Chemie der Technischen Universität München, Lichtenbergstrasse 4, 85747 Garching bei München, Germany
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Allen DP, Crudden CM, Calhoun LA, Wang R. Irreversible cleavage of a carbene–rhodium bond in Rh-N-heterocyclic carbene complexes: implications for catalysis. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.07.021] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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