1
|
Koch A, Engesser TA, Tuczek F. Copper Complexes Supported by Iminotriazole Ligands: Effective Catalysts for the Monooxygenation of Phenols. Organometallics 2023. [DOI: 10.1021/acs.organomet.3c00014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Affiliation(s)
- Alexander Koch
- Institute of Inorganic Chemistry, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Strasse 2, 24118 Kiel, Germany
| | - Tobias A. Engesser
- Institute of Inorganic Chemistry, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Strasse 2, 24118 Kiel, Germany
| | - Felix Tuczek
- Institute of Inorganic Chemistry, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Strasse 2, 24118 Kiel, Germany
| |
Collapse
|
2
|
Ma P, Wang Y, Wang J. Cu‐catalyzed synthesis of 1‐naphthols with terminal alkynes and 2‐bromoaryl ketones. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Peng Ma
- Department of Chemistry, College of Science Tianjin University Tianjin China
| | - Yuhang Wang
- Department of Chemistry, College of Science Tianjin University Tianjin China
| | - Jianhui Wang
- Department of Chemistry, College of Science Tianjin University Tianjin China
- Collaborative Innovation Center of Chemical Science and Engineering Tianjin China
| |
Collapse
|
3
|
Schneider R, Engesser TA, Näther C, Krossing I, Tuczek F. Copper‐Catalyzed Monooxygenation of Phenols: Evidence for a Mononuclear Reaction Mechanism. Angew Chem Int Ed Engl 2022; 61:e202202562. [PMID: 35344617 PMCID: PMC9323449 DOI: 10.1002/anie.202202562] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Indexed: 11/17/2022]
Abstract
The CuI salts [Cu(CH3CN)4]PF and [Cu(oDFB)2]PF with the very weakly coordinating anion Al(OC(CF3)3)4− (PF) as well as [Cu(NEt3)2]PF comprising the unique, linear bis‐triethylamine complex [Cu(NEt3)2]+ were synthesized and examined as catalysts for the conversion of monophenols to o‐quinones. The activities of these CuI salts towards monooxygenation of 2,4‐di‐tert‐butylphenol (DTBP‐H) were compared to those of [Cu(CH3CN)4]X salts with “classic” anions (BF4−, OTf−, PF6−), revealing an anion effect on the activity of the catalyst and a ligand effect on the reaction rate. The reaction is drastically accelerated by employing CuII‐semiquinone complexes as catalysts, indicating that formation of a CuII complex precedes the actual catalytic cycle. This result and other experimental observations show that with these systems the oxygenation of monophenols does not follow a dinuclear, but a mononuclear pathway analogous to that of topaquinone cofactor biosynthesis in amine oxidase.
Collapse
Affiliation(s)
- Rebecca Schneider
- Institut für Anorganische Chemie Christian-Albrechts-Universität zu Kiel Max-Eyth-Straße 2 24118 Kiel Germany
| | - Tobias A. Engesser
- Institut für Anorganische Chemie Christian-Albrechts-Universität zu Kiel Max-Eyth-Straße 2 24118 Kiel Germany
| | - Christian Näther
- Institut für Anorganische Chemie Christian-Albrechts-Universität zu Kiel Max-Eyth-Straße 2 24118 Kiel Germany
| | - Ingo Krossing
- Institut für Anorganische und Analytische Chemie Albert-Ludwigs-Universität Freiburg Albertstraße 21 79104 Freiburg Germany
| | - Felix Tuczek
- Institut für Anorganische Chemie Christian-Albrechts-Universität zu Kiel Max-Eyth-Straße 2 24118 Kiel Germany
| |
Collapse
|
4
|
Schneider R, Engesser TA, Näther C, Krossing I, Tuczek F. Copper‐Catalyzed Monooxygenation of Phenols: Evidence for a Mononuclear Reaction Mechanism. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Rebecca Schneider
- Christian-Albrechts-Universität zu Kiel: Christian-Albrechts-Universitat zu Kiel Institute for Inorganic Chemistry Max-Eyth-Straße 2 24118 Kiel GERMANY
| | - Tobias A. Engesser
- Christian-Albrechts-Universitat zu Kiel Institut für Anorganische Chemie Otto-Hahn-Platz 10 24118 Kiel GERMANY
| | - Christian Näther
- Christian-Albrechts-Universität zu Kiel: Christian-Albrechts-Universitat zu Kiel Institute for Inorganic Chemistry Max-Eyth-Straße 2 24118 Kiel GERMANY
| | - Ingo Krossing
- University of Freiburg: Albert-Ludwigs-Universitat Freiburg Institute for Inorganic and Analytical Chemistry Albertstr. 21 79104 Freiburg i. Br. GERMANY
| | - Felix Tuczek
- Christian-Albrechts-Universität zu Kiel: Christian-Albrechts-Universitat zu Kiel Institute for Inorganic Chemistry Max-Eyth-Straße 2 24118 Kiel GERMANY
| |
Collapse
|
5
|
Heravi MM, Abedian‐Dehaghani N, Zadsirjan V, Rangraz Y. Catalytic Function of Cu (I) and Cu (II) in Total Synthesis of Alkaloids. ChemistrySelect 2021. [DOI: 10.1002/slct.202101130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Majid M. Heravi
- Department of Chemistry School of Physics and Chemistry Alzahra University, PO.Box 1993891176, Vanak Tehran Iran
| | - Neda Abedian‐Dehaghani
- Department of Chemistry School of Physics and Chemistry Alzahra University, PO.Box 1993891176, Vanak Tehran Iran
| | - Vahideh Zadsirjan
- Department of Chemistry School of Physics and Chemistry Alzahra University, PO.Box 1993891176, Vanak Tehran Iran
| | - Yalda Rangraz
- Department of Chemistry School of Physics and Chemistry Alzahra University, PO.Box 1993891176, Vanak Tehran Iran
| |
Collapse
|
6
|
Paul M, Teubner M, Grimm-Lebsanft B, Buchenau S, Hoffmann A, Rübhausen M, Herres-Pawlis S. Influence of the amine donor on hybrid guanidine-stabilized Bis(μ-oxido) dicopper(III) complexes and their tyrosinase-like oxygenation activity towards polycyclic aromatic alcohols. J Inorg Biochem 2021; 224:111541. [PMID: 34416481 DOI: 10.1016/j.jinorgbio.2021.111541] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 06/30/2021] [Accepted: 07/11/2021] [Indexed: 10/20/2022]
Abstract
The tyrosinase-like activity of hybrid guanidine-stabilized bis(μ-oxido) dicopper(III) complexes [Cu2(μ-O)2(L)2](X)2 (L = 2-{2-((Diethylamino)methyl)phenyl}-1,1,3,3-tetramethylguanidine (TMGbenzNEt2, L2) and 2-{2-((Di-isopropylamino)methyl)phenyl}-1,1,3,3-tetramethylguanidine (TMGbenzNiPr2, L3); X = PF6-, BF4-, CF3SO3-) is described. New aromatic hybrid guanidine amine ligands were developed with varying amine donor function. Their copper(I) complexes were analyzed towards their ability to activate dioxygen in the presence of different weakly coordinating anions. The resulting bis(μ-oxido) species were characterized at low temperatures by UV/Vis and resonance Raman spectroscopy, cryo-ESI mass spectrometry and density functional theory calculations. Small structural changes in the ligand sphere were found to influence the characteristic ligand-to-metal charge transfer (LMCT) features of the bis(μ-oxido) species, correlating a redshift in the UV/Vis spectrum with weaker N-donor function of the ligand. DFT calculations elucidated the influence of the steric and electronic properties of the bis(μ-oxido) species leading to a higher twist of the Cu2O2 plane against the CuN2 plane and a stretching of the Cu2O2 core. Despite their moderate stability at -100 °C, the bis(μ-oxido) complexes exhibited a remarkable activity in catalytic oxygenation reactions of polycyclic aromatic alcohols. Further the selectivity of the catalyst in the hydroxylation reactions of challenging phenolic substrates is not changed despite an increasing shield of the reactive bis(μ-oxido) core. The generated quinones were found to form exclusively bent phenazines, providing a promising strategy to access tailored phenazine derivatives.
Collapse
Affiliation(s)
- Melanie Paul
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, 52074 Aachen, Germany
| | - Melissa Teubner
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, 52074 Aachen, Germany; Department of Physics, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | | | - Sören Buchenau
- Department of Physics, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Alexander Hoffmann
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, 52074 Aachen, Germany.
| | - Michael Rübhausen
- Department of Physics, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Sonja Herres-Pawlis
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, 52074 Aachen, Germany.
| |
Collapse
|
7
|
Specht P, Petrillo A, Becker J, Schindler S. Aerobic C−H Hydroxylation by Copper Imine Complexes: The Clip‐and‐Cleave Concept – Versatility and Limits. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100185] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Pascal Specht
- Institut für Anorganische und Analytische Chemie Justus-Liebig-Universität Gießen Heinrich-Buff-Ring 17 35392 Gießen Germany
| | - Alexander Petrillo
- Institut für Anorganische und Analytische Chemie Justus-Liebig-Universität Gießen Heinrich-Buff-Ring 17 35392 Gießen Germany
| | - Jonathan Becker
- Institut für Anorganische und Analytische Chemie Justus-Liebig-Universität Gießen Heinrich-Buff-Ring 17 35392 Gießen Germany
| | - Siegfried Schindler
- Institut für Anorganische und Analytische Chemie Justus-Liebig-Universität Gießen Heinrich-Buff-Ring 17 35392 Gießen Germany
| |
Collapse
|
8
|
Paul M, Hoffmann A, Herres-Pawlis S. Room temperature stable multitalent: highly reactive and versatile copper guanidine complexes in oxygenation reactions. J Biol Inorg Chem 2021; 26:249-263. [PMID: 33595752 PMCID: PMC8068697 DOI: 10.1007/s00775-021-01849-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 01/20/2021] [Indexed: 12/24/2022]
Abstract
Inspired by the efficiency of natural enzymes in organic transformation reactions, the development of synthetic catalysts for oxygenation and oxidation reactions under mild conditions still remains challenging. Tyrosinases serve as archetype when it comes to hydroxylation reactions involving molecular oxygen. We herein present new copper(I) guanidine halide complexes, capable of the activation of molecular oxygen at room temperature. The formation of the reactive bis(µ-oxido) dicopper(III) species and the influence of the anion are investigated by UV/Vis spectroscopy, mass spectrometry, and density functional theory. We highlight the catalytic hydroxylation activity towards diverse polycyclic aromatic alcohols under mild reaction conditions. The selective formation of reactive quinones provides a promising tool to design phenazine derivatives for medical applications.
Collapse
Affiliation(s)
- Melanie Paul
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Alexander Hoffmann
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Sonja Herres-Pawlis
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany.
| |
Collapse
|
9
|
Xiao X, Wengryniuk SE. Recent Advances in the Selective Oxidative Dearomatization of Phenols to o-Quinones and o-Quinols with Hypervalent Iodine Reagents. Synlett 2021; 32:752-762. [PMID: 34334960 PMCID: PMC8323659 DOI: 10.1055/s-0037-1610760] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
ortho-Quinones are valuable molecular frameworks with diverse applications across biology, materials, organic synthesis, catalysis, and coordination chemistry. Despite their broad utility, their synthesis remains challenging, in particular via the direct oxidation of readily accessible phenols, due to the need to affect regioselective ortho oxidation coupled with the sensitivity of the resulting o-quinone products. The perspective looks at the emergence of I(V) hypervalent iodine reagents as an effective class of oxidants for regioselective o-quinone synthesis. The application of these reagents in regioselective phenol oxidation to both o-quinones and o-quinols will be discussed, including a recent report from our laboratory on the first method for the oxidation of electron-deficient phenols using a novel nitrogen-ligated I(V) reagent. Also included are select examples of total syntheses utilizing this methodology as well as recent advancements in chiral I(V) reagent design for asymmetric phenol dearomatization.
Collapse
Affiliation(s)
- Xiao Xiao
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. of China
- Department of Chemistry, Temple University, 1901 North 13 Street, Philadelphia, PA, 19122, USA
| | - Sarah E Wengryniuk
- Department of Chemistry, Temple University, 1901 North 13 Street, Philadelphia, PA, 19122, USA
| |
Collapse
|
10
|
Paul M, Teubner M, Grimm‐Lebsanft B, Golchert C, Meiners Y, Senft L, Keisers K, Liebhäuser P, Rösener T, Biebl F, Buchenau S, Naumova M, Murzin V, Krug R, Hoffmann A, Pietruszka J, Ivanović‐Burmazović I, Rübhausen M, Herres‐Pawlis S. Exceptional Substrate Diversity in Oxygenation Reactions Catalyzed by a Bis(μ-oxo) Copper Complex. Chemistry 2020; 26:7556-7562. [PMID: 32104930 PMCID: PMC7317579 DOI: 10.1002/chem.202000664] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 02/26/2020] [Indexed: 12/18/2022]
Abstract
The enzyme tyrosinase contains a reactive side-on peroxo dicopper(II) center as catalytically active species in C-H oxygenation reactions. The tyrosinase activity of the isomeric bis(μ-oxo) dicopper(III) form has been discussed controversially. The synthesis of bis(μ-oxo) dicopper(III) species [Cu2 (μ-O)2 (L1)2 ](X)2 ([O1](X)2 , X=PF6 - , BF4 - , OTf- , ClO4 - ), stabilized by the new hybrid guanidine ligand 2-{2-((dimethylamino)methyl)phenyl}-1,1,3,3-tetramethylguanidine (L1), and its characterization by UV/Vis, Raman, and XAS spectroscopy, as well as cryo-UHR-ESI mass spectrometry, is described. We highlight selective oxygenation of a plethora of phenolic substrates mediated by [O1](PF6 )2 , which results in mono- and bicyclic quinones and provides an attractive strategy for designing new phenazines. The selectivity is predicted by using the Fukui function, which is hereby introduced into tyrosinase model chemistry. Our bioinspired catalysis harnesses molecular dioxygen for organic transformations and achieves a substrate diversity reaching far beyond the scope of the enzyme.
Collapse
Affiliation(s)
- Melanie Paul
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Melissa Teubner
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
- Department of PhysicsUniversity of HamburgLuruper Chaussee 14922761HamburgGermany
| | | | - Christiane Golchert
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Yannick Meiners
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Laura Senft
- Department of Chemistry and PharmacyFriedrich-Alexander-University of Erlangen-NürnbergEgerlandstrasse 191058ErlangenGermany
| | - Kristina Keisers
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Patricia Liebhäuser
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Thomas Rösener
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Florian Biebl
- Department of PhysicsUniversity of HamburgLuruper Chaussee 14922761HamburgGermany
| | - Sören Buchenau
- Department of PhysicsUniversity of HamburgLuruper Chaussee 14922761HamburgGermany
| | - Maria Naumova
- Deutsches Elektronen-Synchrotron DESYNotkestrasse 8522607HamburgGermany
| | - Vadim Murzin
- Deutsches Elektronen-Synchrotron DESYNotkestrasse 8522607HamburgGermany
| | - Roxanne Krug
- Institute of Bioorganic ChemistryHeinrich Heine University Düsseldorf at Forschungszentrum Jülich52425JülichGermany
| | - Alexander Hoffmann
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Jörg Pietruszka
- Institute of Bioorganic ChemistryHeinrich Heine University Düsseldorf at Forschungszentrum Jülich52425JülichGermany
- Institute of Bio- and Geoscience (IBG-1: Biotechnology)Forschungszentrum Jülich GmbH52425JülichGermany
| | - Ivana Ivanović‐Burmazović
- Department of Chemistry and PharmacyFriedrich-Alexander-University of Erlangen-NürnbergEgerlandstrasse 191058ErlangenGermany
| | - Michael Rübhausen
- Department of PhysicsUniversity of HamburgLuruper Chaussee 14922761HamburgGermany
| | - Sonja Herres‐Pawlis
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| |
Collapse
|
11
|
Herzigkeit B, Jurgeleit R, Flöser BM, Meißner NE, Engesser TA, Näther C, Tuczek F. Employing Linear Tridentate Ligands with Pyrazole End Groups in Catalytic Tyrosinase Model Chemistry: Does Hemilability Matter? Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900242] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Benjamin Herzigkeit
- Institut für Anorganische Chemie Christian‐Albrechts‐Universität zu Kiel Max‐Eyth‐Straße 2 24118 Kiel Germany
| | - Ramona Jurgeleit
- Institut für Anorganische Chemie Christian‐Albrechts‐Universität zu Kiel Max‐Eyth‐Straße 2 24118 Kiel Germany
| | - Benedikt M. Flöser
- Institut für Anorganische Chemie Christian‐Albrechts‐Universität zu Kiel Max‐Eyth‐Straße 2 24118 Kiel Germany
| | - Nadja E. Meißner
- Institut für Anorganische Chemie Christian‐Albrechts‐Universität zu Kiel Max‐Eyth‐Straße 2 24118 Kiel Germany
| | - Tobias A. Engesser
- Institut für Anorganische Chemie Christian‐Albrechts‐Universität zu Kiel Max‐Eyth‐Straße 2 24118 Kiel Germany
| | - Christian Näther
- Institut für Anorganische Chemie Christian‐Albrechts‐Universität zu Kiel Max‐Eyth‐Straße 2 24118 Kiel Germany
| | - Felix Tuczek
- Institut für Anorganische Chemie Christian‐Albrechts‐Universität zu Kiel Max‐Eyth‐Straße 2 24118 Kiel Germany
| |
Collapse
|
12
|
Presti EL, Monzani E, Santagostini L, Casella L. Building biomimetic model compounds of dinuclear and trinuclear copper clusters for stereoselective oxidations. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.09.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
13
|
Esguerra KVN, Lumb JP. Selectivity in the Aerobic Dearomatization of Phenols: Total Synthesis of Dehydronornuciferine by Chemo- and Regioselective Oxidation. Angew Chem Int Ed Engl 2018; 57:1514-1518. [PMID: 29271101 DOI: 10.1002/anie.201710271] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 12/05/2017] [Indexed: 11/11/2022]
Abstract
We describe a selective aerobic oxidation of meta-biaryl phenols that enables rapid access to functionalized phenanthrenes. Aerobic oxidations attract interest due to their efficiency, but remain underutilized in complex molecule settings due to challenges of selectivity. We discuss these issues in the context of Cu catalysis, and highlight the advantages of confining oxygen activation and substrate oxidation to the catalyst's inner-coordination sphere. This gives rise to predictable selectivity that we use for a concise synthesis of the aporphine dehydronornuciferine.
Collapse
Affiliation(s)
- Kenneth Virgel N Esguerra
- Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, Quebec, H3A 0B8, Canada
| | - Jean-Philip Lumb
- Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, Quebec, H3A 0B8, Canada
| |
Collapse
|
14
|
Esguerra KVN, Lumb JP. Selectivity in the Aerobic Dearomatization of Phenols: Total Synthesis of Dehydronornuciferine by Chemo- and Regioselective Oxidation. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201710271] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Jean-Philip Lumb
- Department of Chemistry; McGill University; 801 Sherbrooke St. W. Montreal Quebec H3A 0B8 Canada
| |
Collapse
|
15
|
Effaty F, Zsombor-Pindera J, Kazakova A, Girard B, Askari MS, Ottenwaelder X. Ligand and electronic effects on copper–arylnitroso self-assembly. NEW J CHEM 2018. [DOI: 10.1039/c8nj00894a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The topology and degree of electron transfer in self-assembled redox reactions between copper(i) species and nitrosoarenes are controlled by ligand properties.
Collapse
Affiliation(s)
- F. Effaty
- Department of Chemistry and Biochemistry
- Concordia University
- Montreal
- Canada
| | - J. Zsombor-Pindera
- Department of Chemistry and Biochemistry
- Concordia University
- Montreal
- Canada
| | - A. Kazakova
- Department of Chemistry and Biochemistry
- Concordia University
- Montreal
- Canada
| | - B. Girard
- Department of Chemistry and Biochemistry
- Concordia University
- Montreal
- Canada
| | - M. S. Askari
- Department of Chemistry and Biochemistry
- Concordia University
- Montreal
- Canada
| | - X. Ottenwaelder
- Department of Chemistry and Biochemistry
- Concordia University
- Montreal
- Canada
| |
Collapse
|
16
|
Trammell R, See YY, Herrmann AT, Xie N, Díaz DE, Siegler MA, Baran PS, Garcia-Bosch I. Decoding the Mechanism of Intramolecular Cu-Directed Hydroxylation of sp 3 C-H Bonds. J Org Chem 2017; 82:7887-7904. [PMID: 28654755 PMCID: PMC5792191 DOI: 10.1021/acs.joc.7b01069] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The use of copper in directed C-H oxidation has been relatively underexplored. In a seminal example, Schönecker showed that copper and O2 promoted the hydroxylation of steroid-containing ligands. Recently, Baran (J. Am. Chem. Soc. 2015, 137, 13776) improved the reaction conditions to oxidize similar substrates with excellent yields. In both reports, the involvement of Cu2O2 intermediates was suggested. In this collaborative article, we studied the hydroxylation mechanism in great detail, resulting in the overhaul of the previously accepted mechanism and the development of improved reaction conditions. Extensive experimental evidence (spectroscopic characterization, kinetic analysis, intermolecular reactivity, and radical trap experiments) is provided to support each of the elementary steps proposed and the hypothesis that a key mononuclear LCuII(OOR) intermediate undergoes homolytic O-O cleavage to generate reactive RO• species, which are responsible for key C-H hydroxylation within the solvent cage. These key findings allowed the oxidation protocol to be reformulated, leading to improvements of the reaction cost, practicability, and isolated yield.
Collapse
Affiliation(s)
- Rachel Trammell
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, United States
| | - Yi Yang See
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Aaron T. Herrmann
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Nan Xie
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, United States
| | - Daniel E. Díaz
- Johns Hopkins University, Baltimore, Maryland 21218, United States
| | | | - Phil S. Baran
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Isaac Garcia-Bosch
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, United States
| |
Collapse
|
17
|
Liu L, Qian LW, Wu S, Dong J, Xu Q, Zhou Y, Yin SF. Selective Aerobic C–H Amination of Phenols with Primary Amines over Copper toward Benzoxazoles. Org Lett 2017; 19:2849-2852. [DOI: 10.1021/acs.orglett.7b01061] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Long Liu
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Liang-Wei Qian
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Shaofeng Wu
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Jianyu Dong
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Qing Xu
- College
of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China
| | - Yongbo Zhou
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Shuang-Feng Yin
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
| |
Collapse
|
18
|
Hamann JN, Herzigkeit B, Jurgeleit R, Tuczek F. Small-molecule models of tyrosinase: From ligand hydroxylation to catalytic monooxygenation of external substrates. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2016.07.009] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
19
|
Wendt F, Näther C, Tuczek F. Tyrosinase and catechol oxidase activity of copper(I) complexes supported by imidazole-based ligands: structure–reactivity correlations. J Biol Inorg Chem 2016; 21:777-92. [DOI: 10.1007/s00775-016-1370-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 06/08/2016] [Indexed: 12/16/2022]
|
20
|
Glavinović M, Qi F, Katsenis AD, Friščić T, Lumb JP. Redox-promoted associative assembly of metal-organic materials. Chem Sci 2016; 7:707-712. [PMID: 28791114 PMCID: PMC5530005 DOI: 10.1039/c5sc02214b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 10/08/2015] [Indexed: 11/30/2022] Open
Abstract
We develop an associative synthesis of metal-organic materials that combines solid-state metal oxidation and coordination-driven self-assembly into a one-step, waste-free transformation. The methodology hinges on the unique reactivity of ortho-quinones, which we introduce as versatile oxidants for mechanochemical synthesis. Our strategy opens a previously unexplored route to paramagnetic metal-organic materials from elementary metals.
Collapse
Affiliation(s)
- Martin Glavinović
- Department of Chemistry , McGill University , 801 Sherbrooke St. West Montreal , Quebec H3A 0B8 , Canada . ; ; ; Tel: +514-398-4889
| | - Feng Qi
- Department of Chemistry , McGill University , 801 Sherbrooke St. West Montreal , Quebec H3A 0B8 , Canada . ; ; ; Tel: +514-398-4889
| | - Athanassios D Katsenis
- Department of Chemistry , McGill University , 801 Sherbrooke St. West Montreal , Quebec H3A 0B8 , Canada . ; ; ; Tel: +514-398-4889
| | - Tomislav Friščić
- Department of Chemistry , McGill University , 801 Sherbrooke St. West Montreal , Quebec H3A 0B8 , Canada . ; ; ; Tel: +514-398-4889
| | - Jean-Philip Lumb
- Department of Chemistry , McGill University , 801 Sherbrooke St. West Montreal , Quebec H3A 0B8 , Canada . ; ; ; Tel: +514-398-4889
| |
Collapse
|
21
|
Huang Z, Askari MS, Esguerra KVN, Dai TY, Kwon O, Ottenwaelder X, Lumb JP. A bio-inspired synthesis of oxindoles by catalytic aerobic dual C-H functionalization of phenols. Chem Sci 2015; 7:358-369. [PMID: 29861988 PMCID: PMC5952266 DOI: 10.1039/c5sc02395e] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 10/05/2015] [Indexed: 11/30/2022] Open
Abstract
We report a bio-inspired approach to the synthesis of oxindoles, which couples the energetic requirements of dehydrogenative C–N bond formation to the reduction of oxygen.
Nitrogen-containing heterocycles are fundamentally important to the function of pharmaceuticals, agrochemicals and materials. Herein, we report a bio-inspired approach to the synthesis of oxindoles, which couples the energetic requirements of dehydrogenative C–N bond formation to the reduction of molecular oxygen (O2). Our method is inspired by the biosynthesis of melanin pigments (melanogenesis), but diverges from the biosynthetic polymerization. Mechanistic analysis reveals the involvement of CuII-semiquinone radical intermediates, which enable dehydrogenative carbon–heteroatom bond formation that avoids a catechol/quinone redox couple. This mitagates the deleterious polarity reversal that results from phenolic dearomatization, and enables a high-yielding phenolic C–H functionalization under catalytic aerobic conditions. Our work highlights the broad synthetic utility and efficiency of forming C–N bonds via a catalytic aerobic dearomatization of phenols, which is currently an underdeveloped transformation.
Collapse
Affiliation(s)
- Zheng Huang
- Department of Chemistry , McGill University , Montreal , QC H3A 0B8 , Canada .
| | - Mohammad S Askari
- Department of Chemistry and Biochemistry , Concordia University , Montreal , QC H4B 1R6 , Canada .
| | | | - Tian-Yang Dai
- Department of Chemistry , McGill University , Montreal , QC H3A 0B8 , Canada .
| | - Ohhyeon Kwon
- Department of Chemistry , McGill University , Montreal , QC H3A 0B8 , Canada .
| | - Xavier Ottenwaelder
- Department of Chemistry and Biochemistry , Concordia University , Montreal , QC H4B 1R6 , Canada .
| | - Jean-Philip Lumb
- Department of Chemistry , McGill University , Montreal , QC H3A 0B8 , Canada .
| |
Collapse
|
22
|
Askari MS, Esguerra KVN, Lumb JP, Ottenwaelder X. A Biomimetic Mechanism for the Copper-Catalyzed Aerobic Oxygenation of 4-tert-Butylphenol. Inorg Chem 2015; 54:8665-72. [PMID: 26302341 DOI: 10.1021/acs.inorgchem.5b01297] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Controlling product selectivity during the catalytic aerobic oxidation of phenols remains a significant challenge that hinders reaction development. This work provides a mechanistic picture of a Cu-catalyzed, aerobic functionalization of phenols that is selective for phenoxy-coupled ortho-quinones. We show that the immediate product of the reaction is a Cu(II)-semiquinone radical complex and reveal that ortho-oxygenation precedes oxidative coupling. This complex is the resting state of the Cu catalyst during turnover at room temperature. A mechanistic study of the formation of this complex at low temperatures demonstrates that the oxygenation pathway mimics the dinuclear Cu enzyme tyrosinase by involving a dinuclear side-on peroxodicopper(II) oxidant. Unlike the enzyme, however, the rate-limiting step of the ortho-oxygenation reaction is the self-assembly of the oxidant from Cu(I) and O2. We provide details for all steps in the cycle and demonstrate that turnover is contingent upon proton-transfer events that are mediated by a slight excess of ligand. Finally, our knowledge of the reaction mechanism can be leveraged to diversify the reaction outcome. Thus, uncoupled ortho-quinones are favored in polar, coordinating media, highlighting unusually high levels of chemoselectivity for a catalytic aerobic oxidation of a phenol.
Collapse
Affiliation(s)
- Mohammad S Askari
- Department of Chemistry and Biochemistry, Concordia University , Montreal, QC H4B 1R6, Canada
| | | | - Jean-Philip Lumb
- Department of Chemistry, McGill University , Montreal, QC H3A 0B8, Canada
| | - Xavier Ottenwaelder
- Department of Chemistry and Biochemistry, Concordia University , Montreal, QC H4B 1R6, Canada
| |
Collapse
|