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Neff RK, Su YL, Liu S, Rosado M, Zhang X, Doyle MP. Generation of Halomethyl Radicals by Halogen Atom Abstraction and Their Addition Reactions with Alkenes. J Am Chem Soc 2019; 141:16643-16650. [DOI: 10.1021/jacs.9b05921] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Robynne K. Neff
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Yong-Liang Su
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Siqi Liu
- College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Melina Rosado
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Xinhao Zhang
- Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Michael P. Doyle
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, Texas 78249, United States
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Nishiyama H, Ikeda H, Saito T, Kriegel B, Tsurugi H, Arnold J, Mashima K. Structural and Electronic Noninnocence of α-Diimine Ligands on Niobium for Reductive C-Cl Bond Activation and Catalytic Radical Addition Reactions. J Am Chem Soc 2017; 139:6494-6505. [PMID: 28409626 DOI: 10.1021/jacs.7b02710] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A d0 niobium(V) complex, NbCl3(α-diimine) (1a), supported by a dianionic redox-active N,N'-bis(2,6-diisopropylphenyl)-1,4-diaza-2,3-dimethyl-1,3-butadiene (α-diimine) ligand (ene-diamido ligand) served as a catalyst for radical addition reactions of CCl4 to α-olefins and cyclic alkenes, selectively affording 1:1 radical addition products in a regioselective manner. During the catalytic reaction, the α-diimine ligand smoothly released and stored an electron to control the oxidation state of the niobium center by changing between an η4-(σ2,π) coordination mode with a folded MN2C2 metallacycle and a κ2-(N,N') coordination mode with a planar MN2C2 metallacycle. Kinetic studies of the catalytic reaction elucidated the reaction order in the catalytic cycle: the radical addition reaction rate obeyed first-order kinetics that were dependent on the concentrations of the catalyst, styrene, and CCl4, while a saturation effect was observed at a high CCl4 concentration. In the presence of excess amounts of styrene, styrene coordinated in an η2-olefinic manner to the niobium center to decrease the reaction rate. No observation of oligomers or polymers of styrene and high stereoselectivity for the radical addition reaction of CCl4 to cyclopentene suggested that the C-C bond formation proceeded inside the coordination sphere of niobium, which was in good accordance with the negative entropy value of the radical addition reaction. Furthermore, reaction of 1a with (bromomethyl)cyclopropane confirmed that both the C-Br bond activation and formation proceeded on the α-diimine-coordinated niobium center during transformation of the cyclopropylmethyl radical to a homoallyl radical. With regard to the reaction mechanism, we detected and isolated NbCl4(α-diimine) (6a) as a transient one-electron oxidized species of 1a during reductive cleavage of the C-X bonds; in addition, the monoanionic α-diimine ligand of 6a adopted a monoanionic canonical form with selective one-electron oxidation of the dianionic ene-diamido form of the ligand in 1a.
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Affiliation(s)
- Haruka Nishiyama
- Department of Chemistry, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka, 5608531, Japan
| | - Hideaki Ikeda
- Department of Chemistry, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka, 5608531, Japan
| | - Teruhiko Saito
- Department of Chemistry, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka, 5608531, Japan
| | - Benjamin Kriegel
- Department of Chemistry, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka, 5608531, Japan
| | - Hayato Tsurugi
- Department of Chemistry, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka, 5608531, Japan
| | - John Arnold
- Department of Chemistry, University of California , Berkeley, California 94720-1460, United States
| | - Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka, 5608531, Japan
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Rej S, Majumdar M, Kando S, Sugino Y, Tsurugi H, Mashima K. Mixed Ligated Tris(amidinate)dimolybdenum Complexes as Catalysts for Radical Addition of CCl4 to 1-Hexene: Leaving Ligand Lability Controls Catalyst Activity. Inorg Chem 2016; 56:634-644. [DOI: 10.1021/acs.inorgchem.6b02525] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Supriya Rej
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Moumita Majumdar
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Shun Kando
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Yoshitaka Sugino
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Hayato Tsurugi
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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Pintauer T. Towards the development of highly active copper catalysts for atom transfer radical addition (ATRA) and polymerization (ATRP)‡. CHEMICAL PAPERS 2016. [DOI: 10.1515/chempap-2015-0183] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Fundamentals of copper catalyzed atom transfer radical addition (ATRA) and mechanistically similar polymerization (ATRP) were discussed. Special emphasis was placed on structural characterization and electrochemical properties of copper complexes. Recent advances in the development of highly active copper complexes for both processes were also reviewed. It was found that electron-donating groups (methoxy and methyl in the 4 and 3,5 positions, respectively) of the pyridine rings in tris(2-pyridylmethyl)amine (TPMA) ligand, significantly increase the catalytic activity in copper mediated ATRA/ATRP.
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Tris(2-pyridylmethyl)amine Based Ligands in Copper Catalyzed Atom Transfer Radical Addition (ATRA) and Polymerization (ATRP). ACTA ACUST UNITED AC 2015. [DOI: 10.1021/bk-2015-1187.ch006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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6
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Kaur A, Ribelli TG, Schröder K, Matyjaszewski K, Pintauer T. Properties and ATRP activity of copper complexes with substituted tris(2-pyridylmethyl)amine-based ligands. Inorg Chem 2015; 54:1474-86. [PMID: 25625939 DOI: 10.1021/ic502484s] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Synthesis, characterization, electrochemical studies, and ATRP activity of a series of novel copper(I and II) complexes with TPMA-based ligands containing 4-methoxy-3,5-dimethyl-substituted pyridine arms were reported. In the solid state, Cu(I)(TPMA*(1))Br, Cu(I)(TPMA*(2))Br, and Cu(I)(TPMA*(3))Br complexes were found to be distorted tetrahedral in geometry and contained coordinated bromide anions. Pseudo-coordination of the aliphatic nitrogen atom to the copper(I) center was observed in Cu(I)(TPMA*(2))Br and Cu(I)(TPMA*(3))Br complexes, whereas pyridine arm dissociation occurred in Cu(I)(TPMA*(1))Br. All copper(I) complexes with substituted TPMA ligands exhibited a high degree of fluxionality in solution. At low temperature, Cu(I)(TPMA*(1))Br was found to be symmetrical and monomeric, while dissociation of either unsubstituted pyridine and/or 4-methoxy-3,5-dimethyl-substituted pyridine arms was observed in Cu(I)(TPMA*(2))Br and Cu(I)(TPMA*(3))Br. On the other hand, the geometry of the copper(II) complexes in the solid state deviated from ideal trigonal bipyramidal, as confirmed by a decrease in τ values ([Cu(II)(TPMA*(1))Br][Br] (τ = 0.92) > [Cu(II)(TPMA*(3))Br][Br] (τ = 0.77) > [Cu(II)(TPMA*(2))Br][Br] (τ = 0.72)). Furthermore, cyclic voltammetry studies indicated a nearly stepwise decrease (ΔE ≈ 60 mV) of E1/2 values relative to SCE (TPMA (-240 mV) > TPMA*(1) (-310 mV) > TPMA*(2) (-360 mV) > TPMA*(3) (-420 mV)) on going from [Cu(II)(TPMA)Br][Br] to [Cu(II)(TPMA*(3))Br][Br], confirming that the presence of electron-donating groups in the 4 (-OMe) and 3,5 (-Me) positions of the pyridine rings in TPMA increases the reducing ability of the corresponding copper(I) complexes. This increase was mostly the result of a stronger influence of substituted TPMA ligands toward stabilization of the copper(II) oxidation state (log β(I) = 13.4 ± 0.2, log β(II) = 19.3 (TPMA*(1)), 20.5 (TPMA*(2)), and 21.5 (TPMA*(3))). Lastly, ARGET ATRP kinetic studies show that with more reducing catalysts an induction period is observed. This was attributed to slow regeneration of Cu(I) species from the corresponding Cu(II).
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Affiliation(s)
- Aman Kaur
- Department of Chemistry and Biochemistry, Duquesne University , 600 Forbes Avenue, 308 Mellon Hall, Pittsburgh, Pennsylvania 15282, United States
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Wei W, Wen J, Yang D, Guo M, Tian L, You J, Wang H. Copper-catalyzed cyanoalkylarylation of activated alkenes with AIBN: a convenient and efficient approach to cyano-containing oxindoles. RSC Adv 2014. [DOI: 10.1039/c4ra09022e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel, simple, and cost-effective protocol has been developed for the construction of cyano-containing oxindoles by copper-catalyzed direct cyanoalkylarylation of activated alkenes with AIBN.
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Affiliation(s)
- Wei Wei
- The Key Laboratory of Life-Organic Analysis
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165, China
| | - Jiangwei Wen
- The Key Laboratory of Life-Organic Analysis
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165, China
| | - Daoshan Yang
- The Key Laboratory of Life-Organic Analysis
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165, China
| | - Mengyuan Guo
- The Key Laboratory of Life-Organic Analysis
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165, China
| | - Laijin Tian
- The Key Laboratory of Life-Organic Analysis
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165, China
| | - Jinmao You
- The Key Laboratory of Life-Organic Analysis
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165, China
| | - Hua Wang
- The Key Laboratory of Life-Organic Analysis
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165, China
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Bellesia F, Clark AJ, Felluga F, Gennaro A, Isse AA, Roncaglia F, Ghelfi F. Efficient and Green Route to γ-Lactams by Copper-Catalysed Reversed Atom Transfer Radical Cyclisation of α-Polychloro-N-allylamides, using a Low Load of Metal (0.5 mol%). Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300132] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Eckenhoff WT, Biernesser AB, Pintauer T. Kinetic and Mechanistic Aspects of Atom Transfer Radical Addition (ATRA) Catalyzed by Copper Complexes with Tris(2-pyridylmethyl)amine. Inorg Chem 2012; 51:11917-29. [DOI: 10.1021/ic3018198] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- William T. Eckenhoff
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, 308 Mellon
Hall, Pittsburgh, Pennsylvania 15282, United States
| | - Ashley B. Biernesser
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, 308 Mellon
Hall, Pittsburgh, Pennsylvania 15282, United States
| | - Tomislav Pintauer
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, 308 Mellon
Hall, Pittsburgh, Pennsylvania 15282, United States
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Highly Efficient Organic and Macromolecular Synthesis Using Sequential Copper Catalyzed Azide-Alkyne [3+2] Cycloaddition and ATRA/ATRP. ACTA ACUST UNITED AC 2012. [DOI: 10.1021/bk-2012-1100.ch006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Ricardo CL, Pintauer T. Synthesis of Functionalized Polytriazoles via One-Pot Sequential Copper-Catalyzed Azide-Alkyne [3+2] Cycloaddition and Atom Transfer Radical Addition (ATRA). Isr J Chem 2012. [DOI: 10.1002/ijch.201100111] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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12
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Eckenhoff WT, Biernesser AB, Pintauer T. Structural characterization and investigation of iron(III) complexes with nitrogen and phosphorus based ligands in atom transfer radical addition (ATRA). Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2011.10.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Woodruff SR, Davis BJ, Tsarevsky NV. Selecting the Optimal Reaction Conditions for Copper-Mediated Atom Transfer Radical Polymerization at Low Catalyst Concentration. ACS SYMPOSIUM SERIES 2012. [DOI: 10.1021/bk-2012-1100.ch007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Shannon R. Woodruff
- Department of Chemistry, and Center for Drug Discovery, Design, and Delivery, Dedman College, Southern Methodist University, 3215 Daniel Avenue, Dallas, Texas 75275
| | - Brad J. Davis
- Department of Chemistry, and Center for Drug Discovery, Design, and Delivery, Dedman College, Southern Methodist University, 3215 Daniel Avenue, Dallas, Texas 75275
| | - Nicolay V. Tsarevsky
- Department of Chemistry, and Center for Drug Discovery, Design, and Delivery, Dedman College, Southern Methodist University, 3215 Daniel Avenue, Dallas, Texas 75275
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Muñoz‐Molina JM, Belderrain TR, Pérez PJ. Atom Transfer Radical Reactions as a Tool for Olefin Functionalization – On the Way to Practical Applications. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100379] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- José María Muñoz‐Molina
- Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Centro de Investigación en Química Sostenible (CIQSO), Campus de El Carmen s/n, Universidad de Huelva, 21007 Huelva, Spain
| | - Tomás R. Belderrain
- Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Centro de Investigación en Química Sostenible (CIQSO), Campus de El Carmen s/n, Universidad de Huelva, 21007 Huelva, Spain
| | - Pedro J. Pérez
- Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Centro de Investigación en Química Sostenible (CIQSO), Campus de El Carmen s/n, Universidad de Huelva, 21007 Huelva, Spain
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Fernández-Zúmel MA, Buron C, Severin K. Sequential ATRA/Reductive Cyclopropanation Reactions with a Ruthenium Catalyst in the Presence of Manganese. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100175] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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16
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Muñoz-Molina JM, Sameera WMC, Álvarez E, Maseras F, Belderrain TR, Pérez PJ. Mechanistic and Computational Studies of the Atom Transfer Radical Addition of CCl4 to Styrene Catalyzed by Copper Homoscorpionate Complexes. Inorg Chem 2011; 50:2458-67. [DOI: 10.1021/ic102279w] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- José María Muñoz-Molina
- Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Centro de Investigación en Química Sostenible (CIQSO), Universidad de Huelva, Campus de El Carmen, 21007 Huelva, Spain
| | - W. M. C. Sameera
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, United Kingdom
| | - Eleuterio Álvarez
- CSIC-Universidad de Sevilla, Avenida de Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Feliu Maseras
- Institute of Chemical Research of Catalonia (ICIQ), 43007 Tarragona, Catalonia, Spain
- Departament de Quimica, Universitat Autonoma de Barcelona, 08193 Bellaterra, Catalonia, Spain
| | - Tomás R. Belderrain
- Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Centro de Investigación en Química Sostenible (CIQSO), Universidad de Huelva, Campus de El Carmen, 21007 Huelva, Spain
| | - Pedro J. Pérez
- Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Centro de Investigación en Química Sostenible (CIQSO), Universidad de Huelva, Campus de El Carmen, 21007 Huelva, Spain
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Ricardo CL, Pintauer T. One-Pot Sequential Azide-Alkyne [3+2] Cycloaddition and Atom Transfer Radical Addition (ATRA): Expanding the Scope of In Situ Copper(I) Regeneration in the Presence of Environmentally Benign Reducing Agent. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201001335] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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18
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A green way to γ-lactams through a copper catalyzed ARGET-ATRC in ethanol and in the presence of ascorbic acid. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.11.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Eckenhoff WT, Pintauer T. Atom transfer radical addition (ATRA) catalyzed by copper complexes with tris[2-(dimethylamino)ethyl]amine (Me6TREN) ligand in the presence of free-radical diazo initiator AIBN. Dalton Trans 2011; 40:4909-17. [DOI: 10.1039/c1dt10189g] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Balili MNC, Pintauer T. Photoinitiated ambient temperature copper-catalyzed atom transfer radical addition (ATRA) and cyclization (ATRC) reactions in the presence of free-radical diazo initiator (AIBN). Dalton Trans 2011; 40:3060-6. [DOI: 10.1039/c0dt01764g] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Thommes K, Fernández-Zúmel MA, Buron C, Godinat A, Scopelliti R, Severin K. Ruthenium-Catalyzed Synthesis of 1,5-Dichlorides by Sequential Intermolecular Kharasch Reactions. European J Org Chem 2010. [DOI: 10.1002/ejoc.201001213] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Eckenhoff WT, Pintauer T. Structural Comparison of Copper(I) and Copper(II) Complexes with Tris(2-pyridylmethyl)amine Ligand. Inorg Chem 2010; 49:10617-26. [DOI: 10.1021/ic1016142] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- William T. Eckenhoff
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, 308 Mellon Hall, Pittsburgh, Pennsylvania 15282, United States
| | - Tomislav Pintauer
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, 308 Mellon Hall, Pittsburgh, Pennsylvania 15282, United States
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Pintauer T. Catalyst Regeneration in Transition‐Metal‐Mediated Atom‐Transfer Radical Addition (ATRA) and Cyclization (ATRC) Reactions. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000234] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tomislav Pintauer
- Duquesne University, Department of Chemistry and Biochemistry, 600 Forbes Avenue, 308 Mellon Hall, Pittsburgh, PA 15282, USA, Fax: +1‐412‐396‐5683
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Balili MNC, Pintauer T. Kinetic Studies of the Initiation Step in Copper Catalyzed Atom Transfer Radical Addition (ATRA) in the Presence of Free Radical Diazo Initiators as Reducing Agents. Inorg Chem 2010; 49:5642-9. [DOI: 10.1021/ic100540q] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marielle Nicole C. Balili
- Duquesne University, Department of Chemistry and Biochemistry, 600 Forbes Avenue, 308 Mellon Hall, Pittsburgh, Pennsylvania 15282
| | - Tomislav Pintauer
- Duquesne University, Department of Chemistry and Biochemistry, 600 Forbes Avenue, 308 Mellon Hall, Pittsburgh, Pennsylvania 15282
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25
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Taylor MJW, Eckenhoff WT, Pintauer T. Copper-catalyzed atom transfer radical addition (ATRA) and cyclization (ATRC) reactions in the presence of environmentally benign ascorbic acid as a reducing agent. Dalton Trans 2010; 39:11475-82. [DOI: 10.1039/c0dt01157f] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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