1
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Morton PA, Boyce AL, Pišpek A, Stewart LW, Ward DJ, Tegner BE, Macgregor SA, Mansell SM. Catalyst Design for Rh-Catalyzed Arene and Alkane C-H Borylation: The NHC Affects the Induction Period, and Indenyl is Superior to Cp. Organometallics 2024; 43:974-986. [PMID: 38756993 PMCID: PMC11094794 DOI: 10.1021/acs.organomet.4c00025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/05/2024] [Accepted: 03/14/2024] [Indexed: 05/18/2024]
Abstract
In order to establish design criteria for Rh C-H borylation catalysts, analogues of the successful catalyst [Rh(Ind)(SIDipp)(COE)] (Ind = η5-indenyl, SIDipp = 1,3-bis(2,6-diisopropylphenyl)-4,5-dihydroimidazol-2-ylidene, and COE = cis-cyclooctene) were synthesized by changing the indenyl and carbene ligands. [RhCp(SIDipp)(COE)] (1) formed alongside the C-C activated, cyclometalated byproduct [RhCp(κ2CAr,Ccarbene-SIDipp')(iPr)] (rac-2; SIDipp' = 1-(6-isopropylphenyl)-3-(2,6-diisopropylphenyl)-4,5-dihydroimidazol-2-ylidene). Computational modeling of COE dissociation showed that both C-C and C-H activation of the SIDipp aryl group is thermally attainable and reversible under experimental conditions, with the C-C activation products being the more thermodynamically stable species. Oxidative addition of 1 with SiH(OEt)3 gave the Rh silyl hydride [RhCp(H){Si(OEt)3}(SIDipp)] (rac-3). [Rh(Ind)(IDipp)(COE)] (4; IDipp = 1,3-bis(2,6-diisopropylphenyl)-imidazole-2-ylidene), the carbonyl analogue [Rh(Ind)(IDipp)(CO)] (5; νCO = 1940 cm-1, cf. 1944 cm-1 for [Rh(Ind)(SIDipp)(COE)]), and [Rh(Ind)(IMe4)(COE)] (6; IMe4 = 1,3,4,5-tetramethylimidazol-2-ylidene) were also characterized, but attempts to synthesize Rh carbene complexes with fluorenyl or 1,2,3,4-tetrahydrofluorenyl ligands were not successful. For the catalytic C-H borylation of benzene using B2pin2, 1 was inactive at 80 °C, and [Rh(Ind)(SIDipp)(COE)] was superior to all other complexes tested due to the shortest induction period. However, the addition of HBpin to precatalyst 4 eliminated the induction period. Catalytic n-alkane C-H borylation using [Rh(Ind)(NHC)(COE)] gave yields of up to 21% alkylBpin, but [RhCp*(C2H4)2] was the better catalyst.
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Affiliation(s)
- Paul A. Morton
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K.
| | - Abigayle L. Boyce
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K.
| | - Anamarija Pišpek
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K.
| | - Lennox W. Stewart
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K.
| | - Daniel J. Ward
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K.
| | | | | | - Stephen M. Mansell
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K.
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2
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Joly N, Colella A, Mendy ME, Mbaye MD, Gaillard S, Poater A, Renaud JL. Blue-Light Induced Iron-Catalyzed Synthesis of γ,δ-Unsaturated Ketones. CHEMSUSCHEM 2024; 17:e202301472. [PMID: 38010264 DOI: 10.1002/cssc.202301472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/24/2023] [Accepted: 11/24/2023] [Indexed: 11/29/2023]
Abstract
A visible-light-induced iron-catalyzed α-alkylation of ketones with allylic and propargylic alcohols as pro-electrophiles is reported. The diaminocyclopentadienone iron tricarbonyl complex plays a dual role by harvesting light and facilitating dehydrogenation and reduction steps without the help of any exogenous photosensitizer. γ,δ-Unsaturated ketones can now be accessed through this borrowing hydrogen methodology at room temperature. Mechanistic investigations revealed that the steric hindrance on the δ-position of either the dienone or ene-ynone intermediate is the key feature to prevent or decrease the competitive 1,6-reduction (and consequently the formation of the saturated ketone) and to favor the synthesis of a set of non-conjugated enones and ynones.
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Affiliation(s)
- Nicolas Joly
- Normandie Univ., LCMT, ENSICAEN, UNICAEN, CNRS, 6 boulevard du Maréchal Juin, 14000, Caen, France
- Departament de Química, Institut de Química Computacional i Catàlisi (IQCC), University of Girona, c/ Mª Aurèlia Capmany 69, 17003, Girona, Catalonia, Spain
| | - Alessandro Colella
- Normandie Univ., LCMT, ENSICAEN, UNICAEN, CNRS, 6 boulevard du Maréchal Juin, 14000, Caen, France
| | - Monique-Edwige Mendy
- Normandie Univ., LCMT, ENSICAEN, UNICAEN, CNRS, 6 boulevard du Maréchal Juin, 14000, Caen, France
- Université Assane Seck de Ziguinchor BP 523, Ziguinchor, Sénégal
| | | | - Sylvain Gaillard
- Normandie Univ., LCMT, ENSICAEN, UNICAEN, CNRS, 6 boulevard du Maréchal Juin, 14000, Caen, France
| | - Albert Poater
- Departament de Química, Institut de Química Computacional i Catàlisi (IQCC), University of Girona, c/ Mª Aurèlia Capmany 69, 17003, Girona, Catalonia, Spain
| | - Jean-Luc Renaud
- Normandie Univ., LCMT, ENSICAEN, UNICAEN, CNRS, 6 boulevard du Maréchal Juin, 14000, Caen, France
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, 75005, Paris, France
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3
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Jiang W, Yang X, Lin L, Yan C, Zhao Y, Wang M, Shi Z. Merging Visible Light Photocatalysis and P(III)-Directed C-H Activation by a Single Catalyst: Modular Assembly of P-Alkyne Hybrid Ligands. Angew Chem Int Ed Engl 2023; 62:e202309709. [PMID: 37814137 DOI: 10.1002/anie.202309709] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 10/08/2023] [Accepted: 10/09/2023] [Indexed: 10/11/2023]
Abstract
Metal-catalyzed C-H activation strategies provide an efficient approach for synthesis by minimizing atom, step, and redox economy. Developing milder, greener, and more effective protocols for these strategies is always highly desirable to the scientific community. In this study, the utilization of a single rhodium complex enabled the visible-light-induced late-stage C-H activation of biaryl-type phosphines with alkynyl bromides, employing inherent phosphorus atoms as directing groups. This chemistry combines P(III)-directed C-H activation with visible light photocatalysis, under exogenous photosensitizer-free conditions, offering a unique platform for ligand design and preparation. Furthermore, this study also explores the asymmetric catalysis and coordination chemistry of the resulting P-alkyne hybrid ligands with specific transition metals. Experimental results and density functional theory calculations demonstrate the mechanistic intricacies of this transformation.
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Affiliation(s)
- Wang Jiang
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Xiuxiu Yang
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Lin Lin
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Chaoguo Yan
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Minyan Wang
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Zhuangzhi Shi
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
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4
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Poveda D, Vivancos Á, Bautista D, González-Herrero P. Photochemically Induced Cyclometalations at Simple Platinum(II) Precursors. Inorg Chem 2023; 62:6207-6213. [PMID: 37043617 PMCID: PMC10131227 DOI: 10.1021/acs.inorgchem.3c00688] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
Photochemical cycloplatinations of 2-arylpyridines and related C∧N ligands, as well as terdentate heteroaromatic N∧N∧C, N∧C∧N, and N∧C∧C compounds, are demonstrated using (Bu4N)2[Pt2Cl6] or [PtCl2(NCPh)2] as precursors at room temperature. Mono- or bis-cyclometalated Pt(II) complexes with C∧N ligands are obtained depending on excitation wavelength and precursor. Monitoring experiments show that photoexcitation enables both the N-coordination and the subsequent C-H metalation. Photochemical synthetic protocols have been developed, which are advantageous with respect to the established thermal procedures and have allowed the synthesis of the first Pt(II) complexes with N∧C∧C ligands.
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Affiliation(s)
- Dionisio Poveda
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Campus de Espinardo, 19, 30100 Murcia, Spain
| | - Ángela Vivancos
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Campus de Espinardo, 19, 30100 Murcia, Spain
| | - Delia Bautista
- Área Científica y Técnica de Investigación, Universidad de Murcia, Campus de Espinardo, 21, 30100 Murcia, Spain
| | - Pablo González-Herrero
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Campus de Espinardo, 19, 30100 Murcia, Spain
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5
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Manguin R, Galiana-Cameo M, Kittikool T, Barthes C, Thongpaen J, Bancal E, Mallet-Ladeira S, Yotphan S, Castarlenas R, Mauduit M, Sortais JB, Baslé O. Iridium(I) complexes with bidentate NHC ligands as catalysts for dehydrogenative directed C-H silylation. Chem Commun (Camb) 2023; 59:4193-4196. [PMID: 36942515 DOI: 10.1039/d2cc06865f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
Abstract
A series of (NHC)(cod)Ir(I) complexes bearing NHC-carboxylate ligands were efficiently synthesized and fully characterized. Their solid-state structures confirmed the bidentate coordination mode of these LX-type NHC ligands. These unprecedented iridium(I) complexes demonstrated efficient catalytic activities in dehydrogenative directed C-H silylation of arenes, and allowed for excellent ortho-selectivity control with aromatic silylating agents.
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Affiliation(s)
- Romane Manguin
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse, France.
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR 6226, F-35000, Rennes, France
| | - María Galiana-Cameo
- Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH),Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP, 50009, Zaragoza, Spain
| | - Tanakorn Kittikool
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse, France.
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Cécile Barthes
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse, France.
| | - Jompol Thongpaen
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse, France.
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR 6226, F-35000, Rennes, France
| | - Etienne Bancal
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse, France.
| | - Sonia Mallet-Ladeira
- Université de Toulouse, UPS, Institut de Chimie de Toulouse, FR2599, 118 Route de Narbonne, F-31062, Toulouse, France
| | - Sirilata Yotphan
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Ricardo Castarlenas
- Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH),Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP, 50009, Zaragoza, Spain
| | - Marc Mauduit
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR 6226, F-35000, Rennes, France
| | | | - Olivier Baslé
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse, France.
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6
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Monreal-Corona R, Besalú E, Pla-Quintana A, Poater A. Photoredox catalysis leading to triazolo-quinoxalinones at room temperature: selectivity of the rate determining step. Org Biomol Chem 2022; 20:9330-9336. [PMID: 36254586 DOI: 10.1039/d2ob01587k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The interest in the fusion product of quinoxalinone skeletons and 1,2,3-triazole units has greatly increased in recent years since they are known to be agonists of G-protein-coupled Niacin receptor 109A and inhibitors of the benzodiazepine and adenosine receptors. Here, we unveil the mechanism for the photoredox catalyzed synthesis of those scaffolds by means of DFT calculations. The calculations indicate that the rate determining step of this transformation is the attack of the in situ generated radical intermediate on the CN bond of the quinoxalinone species to form a new C-C bond. Predictive chemistry here reveals that the energy difference is so subtle, and gives the recipe of which substituents, sterically and electronically, can fit to perform the reaction at room temperature.
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Affiliation(s)
- Roger Monreal-Corona
- Institute of Computational Chemistry and Catalysis and Department of Chemistry, University of Girona, c/Maria Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain.
| | - Emili Besalú
- Institute of Computational Chemistry and Catalysis and Department of Chemistry, University of Girona, c/Maria Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain.
| | - Anna Pla-Quintana
- Institute of Computational Chemistry and Catalysis and Department of Chemistry, University of Girona, c/Maria Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain.
| | - Albert Poater
- Institute of Computational Chemistry and Catalysis and Department of Chemistry, University of Girona, c/Maria Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain.
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7
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Saha A, Ghosh A, Guin S, Panda S, Mal DK, Majumdar A, Akita M, Maiti D. Substrate‐Rhodium Cooperativity in Photoinduced
ortho
‐Alkynylation of Arenes. Angew Chem Int Ed Engl 2022; 61:e202210492. [DOI: 10.1002/anie.202210492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Argha Saha
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Animesh Ghosh
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Srimanta Guin
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Sanjib Panda
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Dibya Kanti Mal
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Abhirup Majumdar
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Munetaka Akita
- Tokyo Tech World Research Hub Initiative (WRHI) Laboratory for Chemistry and Life Science Tokyo Institute of Technology Tokyo Japan
| | - Debabrata Maiti
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
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8
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Saha A, Ghosh A, Guin S, Panda S, Mal DK, Majumdar A, Akita M, Maiti D. Substrate‐Rhodium Cooperativity in Photoinduced ortho‐Alkynylation of Arenes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202210492] [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)
- Argha Saha
- IIT Bombay: Indian Institute of Technology Bombay CHEMISTRY INDIA
| | - Animesh Ghosh
- IIT Bombay: Indian Institute of Technology Bombay CHEMISTRY INDIA
| | - Srimanta Guin
- IIT Bombay: Indian Institute of Technology Bombay CHEMISTRY INDIA
| | - Sanjib Panda
- Indian Institute of Technology Bombay CHEMISTRY INDIA
| | - Dibya Kanti Mal
- IIT Bombay: Indian Institute of Technology Bombay CHEMISTRY INDIA
| | - Abhirup Majumdar
- IIT Bombay: Indian Institute of Technology Bombay CHEMISTRY INDIA
| | - Munetaka Akita
- Tokyo Institute of Technology Chemistry and Life Science JAPAN
| | - Debabrata Maiti
- Indian Institute of Technology-Bombay Department of Chemistry Powai 400076 Mumbai INDIA
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9
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Wang S, Ma P, Shaik S, Chen H. Valence-Inverted States of Nickel(II) Complexes Perform Facile C-H Bond Activation. J Am Chem Soc 2022; 144:14607-14613. [PMID: 35925767 DOI: 10.1021/jacs.2c03835] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Valence-inverted reactivity (VIR) is discovered here through high-level computations of excited states of Ni(II) complexes that are generated by triplet energy transfer. For example, the so-generated 3[(Ar)(bpy)NiII(Br)] species possesses a valence-inverted occupancy, dxy1dxz1dx2-y22, wherein the uppermost dx2-y2 orbital is metal-ligand antibonding. This state promotes C-H bond activation of THF and its cross-coupling to the aryl ligand. Thus, due to the metal-ligand antibonding character of dx2-y2, the dxy1dx2-y22 subshell opens a Ni-coordination site by shifting the bidentate bipyridine ligand to monodentate plus a dangling pyridine. The tricoordinate Ni(II) intermediate inserts into a C-H bond of THF, transfers a proton to the dangling pyridine moiety, and eventually generates an arylated THF by reductive-coupling. The calculated high kinetic isotope effect is in accord with experiment, both revealing C-H activation. The VIR pattern is novel, its cross-coupling reaction is highly useful, and it is generally expected to occur in other d8 complexes.
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Affiliation(s)
- Shaohong Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pengchen Ma
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Sason Shaik
- Institute of Chemistry, The Hebrew University of Jerusalem, 9190400 Jerusalem, Israel
| | - Hui Chen
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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10
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Veth L, Grab HA, Dydio P. Recent Trends in Group 9 Catalyzed C–H Borylation Reactions: Different Strategies To Control Site-, Regio-, and Stereoselectivity. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1711-5889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
AbstractOrganoboron compounds continue contributing substantially to advances in organic chemistry with their increasing role as both synthetic intermediates and target compounds for medicinal chemistry. Particularly attractive methods for their synthesis are based on the direct borylation of C–H bonds of available starting materials since no additional pre-functionalization steps are required. However, due to the high abundance of C–H bonds with similar reactivity in organic molecules, synthetically useful C–H borylation protocols demand sophisticated strategies to achieve high regio- and stereoselectivity. For this purpose, selective transition-metal-based catalysts have been developed, with group 9 centered catalysts being among the most commonly utilized. Recently, a multitude of diverse strategies has been developed to push the boundaries of C–H borylation reactions with respect to their regio- and enantioselectivity. Herein, we provide an overview of approaches for the C–H borylation of arenes, alkenes, and alkanes based on group 9 centered catalysts with a focus on the recent literature. Lastly, an outlook is given to assess the future potential of the field.1 Introduction1.1 Mechanistic Considerations1.2 Selectivity Issues in C–H Borylation1.3 Different Modes of Action Employing Directing Group Strategies in C–H Borylation1.4 Scope and Aim of this Short Review2 Trends in C–H Borylation Reactions2.1 Photoinduced Catalysis2.2 Transfer C–H Borylation2.3 Lewis Acid Mediated C–H Borylation2.4 Directed Metalation2.5 Miscellaneous C–H Borylation Reactions2.6 Electrostatic Interactions2.7 Hydrogen Bonding3 Conclusion and Outlook
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11
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Pei C, Empel C, Koenigs RM. Visible‐Light‐Induced, Single‐Metal‐Catalyzed, Directed C−H Functionalization: Metal‐Substrate‐Bound Complexes as Light‐Harvesting Agents. Angew Chem Int Ed Engl 2022; 61:e202201743. [PMID: 35344253 PMCID: PMC9401074 DOI: 10.1002/anie.202201743] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Indexed: 12/05/2022]
Abstract
C−H functionalization represents one of the most rapidly advancing areas in organic synthesis and is regarded as one of the key concepts to minimize the ecological and economic footprint of organic synthesis. The ubiquity and low reactivity of C−H bonds in organic molecules, however, poses several challenges, and often necessitates harsh reaction conditions to achieve this goal, although it is highly desirable to achieve C−H functionalization reactions under mild conditions. Recently, several reports uncovered a conceptually new approach towards C−H functionalization, where a single transition‐metal complex can be used as both the photosensitizer and catalyst to promote C−H bond functionalization in the absence of an exogeneous photosensitizer. In this Minireview, we will provide an overview on recent achievements in C−H functionalization reactions, with an emphasis on the photochemical modulation of the reaction mechanism using such catalysts.
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Affiliation(s)
- Chao Pei
- RWTH Aachen University Institute of Organic Chemistry Landoltweg 1 52074 Aachen Germany
| | - Claire Empel
- RWTH Aachen University Institute of Organic Chemistry Landoltweg 1 52074 Aachen Germany
| | - Rene M. Koenigs
- RWTH Aachen University Institute of Organic Chemistry Landoltweg 1 52074 Aachen Germany
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12
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Abdallah MS, Joly N, Gaillard S, Poater A, Renaud JL. Blue-Light-Induced Iron-Catalyzed α-Alkylation of Ketones. Org Lett 2022; 24:5584-5589. [PMID: 35895992 DOI: 10.1021/acs.orglett.2c02233] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We report a visible-light-induced iron-catalyzed α-alkylation of ketones. The photocatalytic system is based on the single diaminocyclopentadienone iron tricarbonyl complex. Two catalytic intermediates of this complex are able to harvest light, allowing the synthesis of substituted aromatic and aliphatic ketones at room temperature using the borrowing hydrogen strategy in the presence of various substituted primary alcohols as alkylating reagents. Preliminary mechanistic studies unveil the role of light for both the dehydrogenation and reduction step.
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Affiliation(s)
- Marie-Samira Abdallah
- Normandie Univ., LCMT, ENSICAEN, UNICAEN, CNRS, 6 boulevard du Maréchal Juin, 14000 Caen, France
| | - Nicolas Joly
- Normandie Univ., LCMT, ENSICAEN, UNICAEN, CNRS, 6 boulevard du Maréchal Juin, 14000 Caen, France.,Departament de Química, Institut de Química Computacional i Catàlisi (IQCC), University of Girona, c/Ma Aurèlia Capmany 69, 17003 Girona, Catalonia Spain
| | - Sylvain Gaillard
- Normandie Univ., LCMT, ENSICAEN, UNICAEN, CNRS, 6 boulevard du Maréchal Juin, 14000 Caen, France
| | - Albert Poater
- Departament de Química, Institut de Química Computacional i Catàlisi (IQCC), University of Girona, c/Ma Aurèlia Capmany 69, 17003 Girona, Catalonia Spain
| | - Jean-Luc Renaud
- Normandie Univ., LCMT, ENSICAEN, UNICAEN, CNRS, 6 boulevard du Maréchal Juin, 14000 Caen, France
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13
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Wang C, Azofra LM, Dam P, Sebek M, Steinfeldt N, Rabeah J, El-Sepelgy O. Catalytic Desaturation of Aliphatic Amides and Imides Enabled by Excited-State Base-Metal Catalysis. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01723] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Chenyang Wang
- Leibniz Institute for Catalysis e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Luis Miguel Azofra
- Instituto de Estudios Ambientales y Recursos Naturales (i-UNAT), Universidad de Las Palmas de Gran Canaria (ULPGC), Campus de Tafira, 35017 Las Palmas de Gran Canaria, Spain
| | - Phong Dam
- Leibniz Institute for Catalysis e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Michael Sebek
- Leibniz Institute for Catalysis e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Norbert Steinfeldt
- Leibniz Institute for Catalysis e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Jabor Rabeah
- Leibniz Institute for Catalysis e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Osama El-Sepelgy
- Leibniz Institute for Catalysis e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
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14
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Empel C, Jana S, Koodan A, Koenigs RM. Unlocking C–H Functionalization at Room Temperature via a Light-Mediated Protodemetalation Reaction. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Claire Empel
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Sripati Jana
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Adithyaraj Koodan
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Rene M. Koenigs
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
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15
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Bisht R, Haldar C, Hassan MMM, Hoque ME, Chaturvedi J, Chattopadhyay B. Metal-catalysed C-H bond activation and borylation. Chem Soc Rev 2022; 51:5042-5100. [PMID: 35635434 DOI: 10.1039/d1cs01012c] [Citation(s) in RCA: 72] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Transition metal-catalysed direct borylation of hydrocarbons via C-H bond activation has received a remarkable level of attention as a popular reaction in the synthesis of organoboron compounds owing to their synthetic versatility. While controlling the site-selectivity was one of the most challenging issues in these C-H borylation reactions, enormous efforts of several research groups proved instrumental in dealing with selectivity issues that presently reached an impressive level for both proximal and distal C-H bond borylation reactions. For example, in the case of ortho C-H bond borylation reactions, innovative methodologies have been developed either by the modification of the directing groups attached with the substrates or by creating new catalytic systems via the design of new ligand frameworks. Whereas meta and para selective C-H borylations remained a formidable challenge, numerous innovative concepts have been developed within a very short period of time by the development of new catalytic systems with the employment of various noncovalent interactions. Moreover, significant advancements have occurred for aliphatic C(sp3)-H borylations as well as enantioselective borylations. In this review article, we aim to discuss and summarize the different approaches and findings related to the development of directed proximal ortho, distal meta/para, aliphatic (racemic and enantioselective) borylation reactions since 2014. Additionally, considering the C-H borylation reaction as one of the most important mainstream reactions, various applications of this C-H borylation reaction toward the synthesis of natural products, therapeutics, and applications in materials chemistry will be summarized in the last part of this review article.
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Affiliation(s)
- Ranjana Bisht
- Center of Bio-Medical Research, Division of Molecular Synthesis & Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
| | - Chabush Haldar
- Center of Bio-Medical Research, Division of Molecular Synthesis & Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
| | - Mirja Md Mahamudul Hassan
- Center of Bio-Medical Research, Division of Molecular Synthesis & Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
| | - Md Emdadul Hoque
- Center of Bio-Medical Research, Division of Molecular Synthesis & Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
| | - Jagriti Chaturvedi
- Center of Bio-Medical Research, Division of Molecular Synthesis & Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
| | - Buddhadeb Chattopadhyay
- Center of Bio-Medical Research, Division of Molecular Synthesis & Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
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16
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Mejuto C, Ibáñez-Ibáñez L, Guisado-Barrios G, Mata JA. Visible-Light-Promoted Iridium(III)-Catalyzed Acceptorless Dehydrogenation of N-Heterocycles at Room Temperature. ACS Catal 2022; 12:6238-6245. [PMID: 35633898 PMCID: PMC9128065 DOI: 10.1021/acscatal.2c01224] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/29/2022] [Indexed: 12/14/2022]
Abstract
![]()
An effective visible-light-promoted
iridium(III)-catalyzed hydrogen
production from N-heterocycles is described. A single iridium complex
constitutes the photocatalytic system playing a dual task, harvesting
visible-light and facilitating C–H cleavage and H2 formation at room temperature and without additives. The presence
of a chelating C–N ligand combining a mesoionic carbene ligand
along with an amido functionality in the IrIII complex
is essential to attain the photocatalytic transformation. Furthermore,
the IrIII complex is also an efficient catalyst for the
thermal reverse process under mild conditions, positioning itself
as a proficient candidate for liquid organic hydrogen carrier technologies
(LOHCs). Mechanistic studies support a light-induced formation of
H2 from the Ir–H intermediate as the operating mode
of the iridium complex.
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Affiliation(s)
- Carmen Mejuto
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universitat Jaume I, Avda. Sos Baynat s/n, 12006 Castellón, Spain
| | - Laura Ibáñez-Ibáñez
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universitat Jaume I, Avda. Sos Baynat s/n, 12006 Castellón, Spain
| | - Gregorio Guisado-Barrios
- Departamento de Química Inorgánica. Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Jose A. Mata
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universitat Jaume I, Avda. Sos Baynat s/n, 12006 Castellón, Spain
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17
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Poland EM, Ho CC. Photoactive N‐Heterocyclic Carbene Transition Metal Complexes in Bond‐Forming Photocatalysis: State‐of‐the‐Art and Opportunities. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6746] [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)
- Eve M. Poland
- School of Natural Sciences – Chemistry University of Tasmania Hobart Tasmania Australia
| | - Curtis C. Ho
- School of Natural Sciences – Chemistry University of Tasmania Hobart Tasmania Australia
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18
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Luo Y, Jiang S, Xu X. Yttrium-Catalyzed ortho-Selective C-H Borylation of Pyridines with Pinacolborane. Angew Chem Int Ed Engl 2022; 61:e202117750. [PMID: 35263010 DOI: 10.1002/anie.202117750] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Indexed: 12/14/2022]
Abstract
This work reports a site-selective C-H borylation of pyridines at the ortho-position with pinacolborane enabled by an yttrocene catalyst. The reaction provides a new family of 2-pyridyl boronates with a broad substrate scope and high atom efficiency. The resultant boronates were able to undergo a variety of transformations, e.g., oxidation, Suzuki-Miyaura coupling, Chan-Lam amination and etherification. Catalytic intermediates, including ortho-C-H metalated and borylated complexes, were isolated from stoichiometric experiments and confirmed by single-crystal X-ray diffraction.
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Affiliation(s)
- Yuncong Luo
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Shengjie Jiang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Xin Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
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19
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Organometallic catalysis under visible light activation: benefits and preliminary rationales. Photochem Photobiol Sci 2022; 21:585-606. [PMID: 35218553 DOI: 10.1007/s43630-022-00181-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 01/28/2022] [Indexed: 12/19/2022]
Abstract
Organometallic catalysis under visible light activation is an emerging field. Activation by photosensitization or by direct light absorption of organometallic complexes can facilitate or trigger elementary steps in a catalytic cycle such as pre-catalyst reduction, oxidative addition, transmetalation and reductive elimination, as well as the ability of generating radical intermediates, widening the structural diversity offered by classical couplings. This perspective aims to highlight key examples of these light-induced or enhanced processes, with an emphasis on the underlying mechanisms involved.
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20
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Antimicrobial Properties of Amino-Acid-Derived N-Heterocyclic Carbene Silver Complexes. Pharmaceutics 2022; 14:pharmaceutics14040748. [PMID: 35456582 PMCID: PMC9024828 DOI: 10.3390/pharmaceutics14040748] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/15/2022] [Accepted: 03/25/2022] [Indexed: 02/01/2023] Open
Abstract
Complexes {Ag[NHCMes,R]}n (R = H, 2a; Me, 2b and 2b’; iPr, 2c; iBu, 2d), were prepared by treatment of imidazolium precursor compounds [ImMes,R] (2-(3-mesityl-1H-imidazol-3-ium-1-yl)acetate, 1a, (S)-2-alkyl(3-mesityl-1H-imidazol-3-ium-1-yl)acetate, 1b–d, and (R)-2-methyl(3-mesityl-1H-imidazol-3-ium-1-yl)acetate, 1b’, with Ag2O under appropriate conditions. They were characterised by analytical, spectroscopic (IR, 1H, and 13C NMR and polarimetry), and X-ray methods (2a). In the solid state, 2a is a one-dimensional coordination polymer, in which the silver(I) cation is bonded to the carbene ligand and to the carboxylate group of a symmetry-related Ag[NHCMes,H] moiety. The coordination environment of the silver centre is well described by the DFT study of the dimeric model {Ag[NHCMes,H]}2. The antimicrobial properties of these complexes were evaluated versus Gram-negative bacteria E. coli and P. aeruginosa. From the observed MIC and MBC values (minimal inhibitory concentration and minimal bactericidal concentration, respectively), complex 2b’ showed the best antimicrobial properties (eutomer), which were significantly better than those of its enantiomeric derivative 2b (distomer). Additionally, analysis of MIC and MBC values of 2a–d reveal a clear structure–antimicrobial effect relationship. Antimicrobial activity decreases when the steric properties of the R alkyl group in {Ag[NHCMes,R]}n increase.
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21
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Pei C, Empel C, Koenigs RM. Visible‐Light‐Induced, Sole‐Metal‐Catalyzed, Directed C–H Functionalization: Metal‐Substrate Bound Complexes as Light‐Harvesting Agents. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201743] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Chao Pei
- RWTH Aachen University: Rheinisch-Westfalische Technische Hochschule Aachen Institute of Organic Chemistry GERMANY
| | - Claire Empel
- RWTH Aachen University: Rheinisch-Westfalische Technische Hochschule Aachen Institute of Organic Chemistry GERMANY
| | - Rene M. Koenigs
- RWTH Aachen University Institute of Organic Chemistry Landoltweg 1 52074 Aachen GERMANY
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22
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Luo Y, Jiang S, Xu X. Yttrium‐Catalyzed
ortho
‐Selective C−H Borylation of Pyridines with Pinacolborane. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yuncong Luo
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou 215123 P. R. China
| | - Shengjie Jiang
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou 215123 P. R. China
| | - Xin Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou 215123 P. R. China
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23
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Abstract
In recent years, visible light-induced transition metal catalysis has emerged as a new paradigm in organic photocatalysis, which has led to the discovery of unprecedented transformations as well as the improvement of known reactions. In this subfield of photocatalysis, a transition metal complex serves a double duty by harvesting photon energy and then enabling bond forming/breaking events mostly via a single catalytic cycle, thus contrasting the established dual photocatalysis in which an exogenous photosensitizer is employed. In addition, this approach often synergistically combines catalyst-substrate interaction with photoinduced process, a feature that is uncommon in conventional photoredox chemistry. This Review describes the early development and recent advances of this emerging field.
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Affiliation(s)
- Kelvin Pak Shing Cheung
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Sumon Sarkar
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Vladimir Gevorgyan
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
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24
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Grygorenko OO, Moskvina VS, Kleban I, Hryshchyk OV. Synthesis of saturated and partially saturated heterocyclic boronic derivatives. Tetrahedron 2022. [DOI: 10.1016/j.tet.2021.132605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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25
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Thongpaen J, Manguin R, Kittikool T, Camy A, Roisnel T, Dorcet V, Yotphan S, Canac Y, Mauduit M, Baslé O. Ruthenium–NHC complex-catalyzed P( iii)-directed C–H borylation of arylphosphines. Chem Commun (Camb) 2022; 58:12082-12085. [DOI: 10.1039/d2cc03909e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bidentate NHC-based ruthenium catalyst for P(III)-directed ortho C–H borylation of arylphosphines.
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Affiliation(s)
- Jompol Thongpaen
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse, France
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR – UMR 6226, F-35000 Rennes, France
| | - Romane Manguin
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse, France
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR – UMR 6226, F-35000 Rennes, France
| | - Tanakorn Kittikool
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse, France
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
| | - Aurèle Camy
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse, France
| | | | - Vincent Dorcet
- Univ Rennes, CNRS, ISCR – UMR 6226, F-35000 Rennes, France
| | - Sirilata Yotphan
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
| | - Yves Canac
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Marc Mauduit
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR – UMR 6226, F-35000 Rennes, France
| | - Olivier Baslé
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse, France
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26
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Chan AY, Perry IB, Bissonnette NB, Buksh BF, Edwards GA, Frye LI, Garry OL, Lavagnino MN, Li BX, Liang Y, Mao E, Millet A, Oakley JV, Reed NL, Sakai HA, Seath CP, MacMillan DWC. Metallaphotoredox: The Merger of Photoredox and Transition Metal Catalysis. Chem Rev 2021; 122:1485-1542. [PMID: 34793128 DOI: 10.1021/acs.chemrev.1c00383] [Citation(s) in RCA: 460] [Impact Index Per Article: 153.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The merger of photoredox catalysis with transition metal catalysis, termed metallaphotoredox catalysis, has become a mainstay in synthetic methodology over the past decade. Metallaphotoredox catalysis has combined the unparalleled capacity of transition metal catalysis for bond formation with the broad utility of photoinduced electron- and energy-transfer processes. Photocatalytic substrate activation has allowed the engagement of simple starting materials in metal-mediated bond-forming processes. Moreover, electron or energy transfer directly with key organometallic intermediates has provided novel activation modes entirely complementary to traditional catalytic platforms. This Review details and contextualizes the advancements in molecule construction brought forth by metallaphotocatalysis.
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Affiliation(s)
- Amy Y Chan
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Ian B Perry
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Noah B Bissonnette
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Benito F Buksh
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Grant A Edwards
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Lucas I Frye
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Olivia L Garry
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Marissa N Lavagnino
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Beryl X Li
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Yufan Liang
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Edna Mao
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Agustin Millet
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - James V Oakley
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Nicholas L Reed
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Holt A Sakai
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Ciaran P Seath
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - David W C MacMillan
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
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27
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Evans KJ, Morton PA, Luz C, Miller C, Raine O, Lynam JM, Mansell SM. Rhodium Indenyl NHC and Fluorenyl-Tethered NHC Half-Sandwich Complexes: Synthesis, Structures and Applications in the Catalytic C-H Borylation of Arenes and Alkanes. Chemistry 2021; 27:17824-17833. [PMID: 34653269 PMCID: PMC9299238 DOI: 10.1002/chem.202102961] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Indexed: 01/11/2023]
Abstract
Indenyl (Ind) rhodium N-heterocyclic carbene (NHC) complexes [Rh(η5 -Ind)(NHC)(L)] were synthesised for 1,3-bis(2,6-diisopropylphenyl)-4,5-dihydroimidazol-2-ylidene (SIPr) with L=C2 H4 (1), CO (2 a) and cyclooctene (COE; 3), for 1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene (SIMes) with L=CO (2 b) and COE (4), and 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes) with L=CO (2 c) and COE (5). Reaction of SIPr with [Rh(Cp*)(C2 H4 )2 ] did not give the desired SIPr complex, thus demonstrating the "indenyl effect" in the synthesis of 1. Oxidative addition of HSi(OEt)3 to 3 proceeded under mild conditions to give the Rh silyl hydride complex [Rh(Ind){Si(OEt)3 }(H)(SIPr)] (6) with loss of COE. Tethered-fluorenyl NHC rhodium complexes [Rh{(η5 -C13 H8 )C2 H4 N(C)C2 Hx NR}(L)] (x=4, R=Dipp, L=C2 H4 : 11; L=COE: 12; L=CO: 13; R=Mes, L=COE: 14; L=CO: 15; x=2, R=Me, L=COE: 16; L=CO: 17) were synthesised in low yields (5-31 %) in comparison to good yields for the monodentate complexes (49-79 %). Compounds 3 and 1, which contain labile alkene ligands, were successful catalysts for the catalytic borylation of benzene with B2 pin2 (Bpin=pinacolboronate, 97 and 93 % PhBpin respectively with 5 mol % catalyst, 24 h, 80 °C), with SIPr giving a more active catalyst than SIMes or IMes. Fluorenyl-tethered NHC complexes were much less active as borylation catalysts, and the carbonyl complexes were inactive. The borylation of toluene, biphenyl, anisole and diphenyl ether proceeded to give meta substitutions as the major product, with smaller amounts of para substitution and almost no ortho product. The borylation of octane and decane with B2 pin2 at 120 and 140 °C, respectively, was monitored by 11 B NMR spectroscopy, which showed high conversions into octyl and decylBpin over 4-7 days, thus demonstrating catalysed sp3 C-H borylation with new piano stool rhodium indenyl complexes. Irradiation of the monodentate complexes with 400 or 420 nm light confirmed the ready dissociation of C2 H4 and COE ligands, whereas CO complexes were inert. Evidence for C-H bond activation in the alkyl groups of the NHC ligands was obtained.
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Affiliation(s)
- Kieren J Evans
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Paul A Morton
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Christian Luz
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Callum Miller
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Olivia Raine
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Jason M Lynam
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| | - Stephen M Mansell
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
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28
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Cui E, Qiao D, Li H, Guo L, Tung CH, Wang Y. Engaging Ag(0) single atoms in silver(I) salts-mediated C-B and C-S coupling under visible light irradiation. J Catal 2021. [DOI: 10.1016/j.jcat.2021.08.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Tanaka J, Nagashima Y, Araujo Dias AJ, Tanaka K. Photo-Induced ortho-C-H Borylation of Arenes through In Situ Generation of Rhodium(II) Ate Complexes. J Am Chem Soc 2021; 143:11325-11331. [PMID: 34283597 DOI: 10.1021/jacs.1c05859] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Photoinduced in situ "oxidation" of half-sandwich metal complexes to "high-valent" cationic metal complexes has been used to accelerate catalytic reactions. Here, we report the unprecedented photoinduced in situ "reduction" of half-sandwich metal [Rh(III)] complexes to "low-valent" anionic metal [Rh(II)] ate complexes, which facilitate ligand exchange with electron-deficient elements (diboron). This strategy was realized by using a functionalized cyclopentadienyl (CpA3) Rh(III) catalyst we developed, which enabled the basic group-directed room temperature ortho-C-H borylation of arenes.
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Affiliation(s)
- Jin Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Yuki Nagashima
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Antônio Junio Araujo Dias
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Ken Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
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30
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Hayashi H, Takano H, Katsuyama H, Harabuchi Y, Maeda S, Mita T. Synthesis of Difluoroglycine Derivatives from Amines, Difluorocarbene, and CO 2 : Computational Design, Scope, and Applications. Chemistry 2021; 27:10040-10047. [PMID: 33929060 DOI: 10.1002/chem.202100812] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Indexed: 12/24/2022]
Abstract
A three-component reaction (3CR) for the synthesis of difluoroglycine derivatives has been achieved by using amines, difluorocarbene (generated in situ), and the abundant, inexpensive, and nontoxic C1 source CO2 . Various tert-amines and pyridine, (iso)quinoline, imidazole, thiazole, and pyrazole derivatives were incorporated, and the corresponding products were isolated in solid form without purification by column chromatography on silica gel. Detailed reaction profiles of the 3CR were obtained from computational analysis using DFT calculations, and the results critically suggest that simple ammonia is not applicable to this reaction. In addition, as strongly supported by computational predictions, a new reagent that can generate difluorocarbene at 0 °C without any additives was discovered. Finally, radical substitution reactions of the obtained difluoroglycine derivatives under photoredox conditions, as well as a synthetic application as an N-heterocyclic carbene ligand are shown.
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Affiliation(s)
- Hiroki Hayashi
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo, Hokkaido, 0010021, Japan.,JST, ERATO Maeda Artificial Intelligence in Chemical Reaction, Design and Discovery Project, Kita 10 Nishi 8, Kita-ku, Sapporo, Hokkaido, 0600810, Japan
| | - Hideaki Takano
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo, Hokkaido, 0010021, Japan.,JST, ERATO Maeda Artificial Intelligence in Chemical Reaction, Design and Discovery Project, Kita 10 Nishi 8, Kita-ku, Sapporo, Hokkaido, 0600810, Japan
| | - Hitomi Katsuyama
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo, Hokkaido, 0010021, Japan.,JST, ERATO Maeda Artificial Intelligence in Chemical Reaction, Design and Discovery Project, Kita 10 Nishi 8, Kita-ku, Sapporo, Hokkaido, 0600810, Japan
| | - Yu Harabuchi
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo, Hokkaido, 0010021, Japan.,JST, ERATO Maeda Artificial Intelligence in Chemical Reaction, Design and Discovery Project, Kita 10 Nishi 8, Kita-ku, Sapporo, Hokkaido, 0600810, Japan.,Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Hokkaido, 0600810, Japan
| | - Satoshi Maeda
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo, Hokkaido, 0010021, Japan.,JST, ERATO Maeda Artificial Intelligence in Chemical Reaction, Design and Discovery Project, Kita 10 Nishi 8, Kita-ku, Sapporo, Hokkaido, 0600810, Japan.,Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Hokkaido, 0600810, Japan.,Research and Services Division of Materials Data and Integrated System (MaDIS), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, 3050044, Japan
| | - Tsuyoshi Mita
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo, Hokkaido, 0010021, Japan.,JST, ERATO Maeda Artificial Intelligence in Chemical Reaction, Design and Discovery Project, Kita 10 Nishi 8, Kita-ku, Sapporo, Hokkaido, 0600810, Japan
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31
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Rogge T, Kaplaneris N, Chatani N, Kim J, Chang S, Punji B, Schafer LL, Musaev DG, Wencel-Delord J, Roberts CA, Sarpong R, Wilson ZE, Brimble MA, Johansson MJ, Ackermann L. C–H activation. ACTA ACUST UNITED AC 2021. [DOI: 10.1038/s43586-021-00041-2] [Citation(s) in RCA: 101] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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32
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Donnelly LJ, Faber T, Morrison CA, Nichol GS, Thomas SP, Love JB. C–H Borylation Catalysis of Heteroaromatics by a Rhenium Boryl Polyhydride. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00869] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Liam J. Donnelly
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, The King’s Buildings, Edinburgh EH9 3FJ, U.K
| | - Teresa Faber
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, The King’s Buildings, Edinburgh EH9 3FJ, U.K
| | - Carole A. Morrison
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, The King’s Buildings, Edinburgh EH9 3FJ, U.K
| | - Gary S. Nichol
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, The King’s Buildings, Edinburgh EH9 3FJ, U.K
| | - Stephen P. Thomas
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, The King’s Buildings, Edinburgh EH9 3FJ, U.K
| | - Jason B. Love
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, The King’s Buildings, Edinburgh EH9 3FJ, U.K
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33
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Britton L, Skrodzki M, Nichol GS, Dominey AP, Pawluć P, Docherty JH, Thomas SP. Manganese-Catalyzed C(sp 2)–H Borylation of Furan and Thiophene Derivatives. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01563] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Luke Britton
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
| | - Maciej Skrodzki
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Gary S. Nichol
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
| | | | - Piotr Pawluć
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Jamie H. Docherty
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
| | - Stephen P. Thomas
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
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34
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Wang J, Cheng X, Liu Y, Zhang J. Multicomponent Synthesis of Unsymmetrical 4,5-Disubstituted Imidazolium Salts as N-Heterocyclic Carbene Precursors: Applications in Palladium-Catalyzed Cross-Coupling Reactions. J Org Chem 2021; 86:6278-6288. [PMID: 33908783 DOI: 10.1021/acs.joc.1c00075] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Various novel (a)chiral 4,5-disubstituted 1-aryl-3-alkyl-imidazolium salts were synthesized via the multicomponent reaction of diketone derivatives, sterically congested arylamines, and alkylamines. Moreover, two novel unsymmetrical bulky cycloalkyl-based NHC-Pd complexes proved highly active as catalysts for Suzuki-Miyaura and Negishi cross-coupling reactions.
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Affiliation(s)
- Jiwei Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry & Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China.,Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xiang Cheng
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Ye Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry & Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Jun Zhang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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35
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Tian YM, Guo XN, Braunschweig H, Radius U, Marder TB. Photoinduced Borylation for the Synthesis of Organoboron Compounds. Chem Rev 2021; 121:3561-3597. [PMID: 33596057 DOI: 10.1021/acs.chemrev.0c01236] [Citation(s) in RCA: 129] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Organoboron compounds have important synthetic value and can be applied in numerous transformations. The development of practical and convenient ways to synthesize boronate esters has thus attracted significant interest. Photoinduced borylations originated from stoichiometric reactions of alkanes and arenes with well-defined metal-boryl complexes. Now, photoredox-initiated borylations, catalyzed by either transition metal or organic photocatalysts, and photochemical borylations with high efficiency have become a burgeoning area of research. In this Focus Review, we summarize research on photoinduced borylations, especially emphasizing recent developments and trends. This includes the photoinduced borylation of arenes, alkanes, aryl/alkyl halides, activated carboxylic acids, amines, alcohols, and so on based on transition metal catalysis, metal-free organocatalysis, and direct photochemical activation. We focus on reaction mechanisms involving single-electron transfer, triplet-energy transfer, and other radical processes.
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Affiliation(s)
- Ya-Ming Tian
- Institute for Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Xiao-Ning Guo
- Institute for Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Holger Braunschweig
- Institute for Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Udo Radius
- Institute for Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Todd B Marder
- Institute for Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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36
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Niggli NE, Baudoin O. Design of Chiral NHC‐Carboxylates as Potential Ligands for Pd‐Catalyzed Enantioselective C−H Activation. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202100015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nadja E. Niggli
- Department of Chemistry University of Basel St. Johanns-Ring 19 CH-4056 Basel Switzerland
| | - Olivier Baudoin
- Department of Chemistry University of Basel St. Johanns-Ring 19 CH-4056 Basel Switzerland
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37
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Jiang J, Yuan D, Ma C, Song W, Lin Y, Hu L, Zhang Y. Palladium-Catalyzed Regiospecific peri- and ortho-C-H Oxygenations of Polyaromatic Rings Mediated by Tunable Directing Groups. Org Lett 2021; 23:279-284. [PMID: 33352055 DOI: 10.1021/acs.orglett.0c03701] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient divergent approach of Pd-catalyzed C-H oxygenation of polyaromatic rings is described. Reversible directing groups enable regiospecific peri- and ortho-oxygenation to readily access a wide array of polyaromatic phenols without pre- and postmanipulation of directing groups. The systematic mechanistic investigation, including deuterium-labeling experiments, palladacycle trapping, and DFT calculations, reveals that the tunable ligand-assisted C-H bond cleavage played a crucial role during the reaction process.
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Affiliation(s)
- Jing Jiang
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Dandan Yuan
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Congzhe Ma
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Wanbin Song
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Yaoyu Lin
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Lihong Hu
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Yinan Zhang
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
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38
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Lai D, Ghosh S, Hajra A. Light-induced borylation: developments and mechanistic insights. Org Biomol Chem 2021; 19:4397-4428. [PMID: 33913460 DOI: 10.1039/d1ob00323b] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Organoboron compounds are very important derivatives because of their profound impacts on medicinal, biological as well as industrial applications. The development of several novel borylation methodologies has achieved momentous interest among synthetic chemists. In this scenario, eco-friendly light-induced borylation is progressively becoming one of the best synthetic tools in recent days to prepare organoboronic ester and acid derivatives based on green chemistry rules. In this article, we have discussed all the UV- and visible-light-induced borylation strategies developed in the last decade. Furthermore, special attention is given to the mechanisms of these borylation methodologies for better understanding of reaction insights.
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Affiliation(s)
- Dipti Lai
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India.
| | - Sumit Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India.
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India.
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39
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Luo H, Pei N, Zhang J. Advances in Nitrogen-Directed Aromatic Compound ortho-C—H Bond Borylation Catalyzed by Transition Metals. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202103013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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40
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Zhang W, Bu J, Wang L, Li P, Li H. Sunlight-mediated [3 + 2] cycloaddition of azobenzenes with arynes: an approach toward the carbazole skeleton. Org Chem Front 2021. [DOI: 10.1039/d1qo00739d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A mild sunlight-mediated [3 + 2] cycloaddition of azobenzenes with arynes has been established for the construction of the carbazole backbone.
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Affiliation(s)
- Wenjie Zhang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P.R. China
| | - Jiahui Bu
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P.R. China
| | - Lei Wang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P.R. China
- Advanced Research Institute and Department of Chemistry, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 200032, P. R. China
| | - Pinhua Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P.R. China
| | - Hongji Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P.R. China
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41
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Affiliation(s)
- B. Yadagiri
- Polymers and Functional Materials Division CSIR-Indian Institute of Chemical Technology Uppal Road, Tarnaka Hyderabad 500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Komal Daipule
- Polymers and Functional Materials Division CSIR-Indian Institute of Chemical Technology Uppal Road, Tarnaka Hyderabad 500007 India
| | - Surya Prakash Singh
- Polymers and Functional Materials Division CSIR-Indian Institute of Chemical Technology Uppal Road, Tarnaka Hyderabad 500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
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42
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Min X, Ji D, Guan Y, Guo S, Hu Y, Wan B, Chen Q. Visible Light Induced Bifunctional Rhodium Catalysis for Decarbonylative Coupling of Imides with Alkynes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010782] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Xiang‐Ting Min
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Ding‐Wei Ji
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Yu‐Qing Guan
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Shi‐Yu Guo
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Yan‐Cheng Hu
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Boshun Wan
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Qing‐An Chen
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
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43
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Min X, Ji D, Guan Y, Guo S, Hu Y, Wan B, Chen Q. Visible Light Induced Bifunctional Rhodium Catalysis for Decarbonylative Coupling of Imides with Alkynes. Angew Chem Int Ed Engl 2020; 60:1583-1587. [DOI: 10.1002/anie.202010782] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Indexed: 12/21/2022]
Affiliation(s)
- Xiang‐Ting Min
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Ding‐Wei Ji
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Yu‐Qing Guan
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Shi‐Yu Guo
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Yan‐Cheng Hu
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Boshun Wan
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Qing‐An Chen
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
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44
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Kim J, Kim D, Chang S. Merging Two Functions in a Single Rh Catalyst System: Bimodular Conjugate for Light-Induced Oxidative Coupling. J Am Chem Soc 2020; 142:19052-19057. [PMID: 33124802 DOI: 10.1021/jacs.0c09982] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A single molecular rhodium catalyst system (PC2-Cp#RhIII) bearing two functional domains for both photosensitization and C-H carbometalation was designed to enable an intramolecular redox process. The hypothesized charge-transfer species (PC2•--Cp#RhIV) was characterized by spectroscopic and electrochemical analyses. This photoinduced internal oxidation allows a facile access to the triplet state of the key post-transmetalation intermediate that readily undergoes C-C bond-forming reductive elimination with a lower activation barrier than in its singlet state, thus enabling catalytic C-H arylation and methylation processes.
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Affiliation(s)
- Jinwoo Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea.,Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Dongwook Kim
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea.,Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, South Korea
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45
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Poveda D, Vivancos Á, Bautista D, González-Herrero P. Visible light driven generation and alkyne insertion reactions of stable bis-cyclometalated Pt(iv) hydrides. Chem Sci 2020; 11:12095-12102. [PMID: 34123220 PMCID: PMC8162800 DOI: 10.1039/d0sc04879h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Hydride complexes resulting from the oxidative addition of C–H bonds are intermediates in hydrocarbon activation and functionalization reactions. The discovery of metal systems that enable their direct formation through photoexcitation with visible light could lead to advantageous synthetic methodologies. In this study, easily accessible dimers [Pt2(μ-Cl)2(C^N)2] (C^N = cyclometalated 2-arylpyridine) are demonstrated as a very convenient source of Pt(C^N) subunits, which promote photooxidative C–H addition reactions with different 2-arylpyridines (N′^C′H) upon irradiation with blue light. The resulting [PtH(Cl)(C^N)(C′^N′)] complexes are the first isolable Pt(iv) hydrides arising from a cyclometalation reaction. A transcyclometalation process involving three photochemical steps is elucidated, which occurs when the C^N ligand is a monocyclometalated 2,6-diarylpyridine, and a detailed analysis of the photoreactivity associated with the Pt(C^N) moiety is provided. Alkyne insertions into the Pt–H bond of a photogenerated Pt(iv) hydride are also reported as a demonstration of the ability of this class of compounds to undergo subsequent organometallic reactions. The photochemical generation of isolable bis-cyclometalated Pt(iv) hydrides via photooxidative C–H addition reactions is demonstrated from easily accessible Pt(ii) precursors using visible light.![]()
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Affiliation(s)
- Dionisio Poveda
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia Campus de Espinardo, 19 30100 Murcia Spain
| | - Ángela Vivancos
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia Campus de Espinardo, 19 30100 Murcia Spain
| | - Delia Bautista
- Área Científica y Técnica de Investigación, Universidad de Murcia Campus de Espinardo, 21 30100 Murcia Spain
| | - Pablo González-Herrero
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia Campus de Espinardo, 19 30100 Murcia Spain
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46
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Yao W, Wang J, He L, Cao D, Yang J. Ru-Catalyzed ortho-Selective Diborylation of 2-Arylpyridines toward the Construction of π-Conjugated Functions. J Org Chem 2020; 85:10245-10252. [PMID: 32627552 DOI: 10.1021/acs.joc.0c01211] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A ruthenium catalytic ortho-C-H diborylation of 2-arylpyridine derivatives, including challenging 2-phenoxypyridine functions, using a remarkably low catalyst loading and a low-cost and bench-stable boron source, has been developed. The novel strategy shows high activity with excellent selectivity and may offer a versatile and green alternative to currently employed high loadings of noble metals or extra additives for the selective borylations.
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Affiliation(s)
- Wubing Yao
- School of Pharmaceutical and Materials Engineering, Taizhou University, Jiaojiang 318000, China
| | - Jiali Wang
- School of Pharmaceutical and Materials Engineering, Taizhou University, Jiaojiang 318000, China
| | - Lili He
- School of Pharmaceutical and Materials Engineering, Taizhou University, Jiaojiang 318000, China
| | - Dongdong Cao
- School of Pharmaceutical and Materials Engineering, Taizhou University, Jiaojiang 318000, China
| | - Jianguo Yang
- School of Pharmaceutical and Materials Engineering, Taizhou University, Jiaojiang 318000, China
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Galiana-Cameo M, Borraz M, Zelenkova Y, Passarelli V, Lahoz FJ, Pérez-Torrente JJ, Oro LA, Di Giuseppe A, Castarlenas R. Rhodium(I)-NHC Complexes Bearing Bidentate Bis-Heteroatomic Acidato Ligands as gem-Selective Catalysts for Alkyne Dimerization. Chemistry 2020; 26:9598-9608. [PMID: 32374897 DOI: 10.1002/chem.202001584] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/24/2020] [Indexed: 02/06/2023]
Abstract
A series of Rh(κ2 -BHetA)(η2 -coe)(IPr) complexes bearing 1,3-bis-hetereoatomic acidato ligands (BHetA) including carboxylato (O,O), thioacetato (O,S), amidato (O,N), thioamidato (N,S), and amidinato (N,N), have been prepared by reaction of the dinuclear precursor [Rh(μ-Cl)(IPr)(η2 -coe)]2 with the corresponding anionic BHetA species. The RhI -NHC-BHetA compounds catalyze the dimerization of aryl alkynes, showing excellent selectivity for the head-to-tail enynes. Among them, the acetanilidato-based catalyst has shown an outstanding catalytic performance reaching unprecedented TOF levels of 2500 h-1 with complete selectivity for the gem-isomer. Investigation of the reaction mechanism supports a non-oxidative pathway in which the BHetA ligand behaves as proton shuttle through intermediate κ1 -HBHetA species. However, in the presence of pyridine as additive, the identification of the common RhIII H(C≡CPh)2 (IPr)(py)2 intermediate gives support for an alternative oxidative route.
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Affiliation(s)
- María Galiana-Cameo
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain
| | - Marina Borraz
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain
| | - Yaroslava Zelenkova
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain
| | - Vincenzo Passarelli
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain.,Centro Universitario de la Defensa, Ctra Huesca S/N, 50090, Zaragoza, Spain
| | - Fernando J Lahoz
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain
| | - Jesús J Pérez-Torrente
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain
| | - Luis A Oro
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain
| | - Andrea Di Giuseppe
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain
| | - Ricardo Castarlenas
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain
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Guillemard L, Wencel-Delord J. When metal-catalyzed C-H functionalization meets visible-light photocatalysis. Beilstein J Org Chem 2020; 16:1754-1804. [PMID: 32765795 PMCID: PMC7385395 DOI: 10.3762/bjoc.16.147] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 06/26/2020] [Indexed: 12/22/2022] Open
Abstract
While aiming at sustainable organic synthesis, over the last decade particular attention has been focused on two modern fields, C-H bond activation, and visible-light-induced photocatalysis. Couplings through C-H bond activation involve the use of non-prefunctionalized substrates that are directly converted into more complex molecules, without the need of a previous functionalization, thus considerably reduce waste generation and a number of synthetic steps. In parallel, transformations involving photoredox catalysis promote radical reactions in the absence of radical initiators. They are conducted under particularly mild conditions while using the visible light as a cheap and economic energy source. In this way, these strategies follow the requirements of environment-friendly chemistry. Regarding intrinsic advantages as well as the complementary mode of action of the two catalytic transformations previously introduced, their merging in a synergistic dual catalytic system is extremely appealing. In that perspective, the scope of this review aims to present innovative reactions combining C-H activation and visible-light induced photocatalysis.
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Affiliation(s)
- Lucas Guillemard
- Laboratoire d'Innovation Moléculaire et Applications (UMR CNRS 7042), Université de Strasbourg/Université de Haute-Alsace, ECPM, 25 rue Becquerel, 67087, Strasbourg, France
| | - Joanna Wencel-Delord
- Laboratoire d'Innovation Moléculaire et Applications (UMR CNRS 7042), Université de Strasbourg/Université de Haute-Alsace, ECPM, 25 rue Becquerel, 67087, Strasbourg, France
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49
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Cheng WM, Shang R. Transition Metal-Catalyzed Organic Reactions under Visible Light: Recent Developments and Future Perspectives. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01979] [Citation(s) in RCA: 148] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Wan-Min Cheng
- College of Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Rui Shang
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Tian YM, Guo XN, Wu Z, Friedrich A, Westcott SA, Braunschweig H, Radius U, Marder TB. Ni-Catalyzed Traceless, Directed C3-Selective C–H Borylation of Indoles. J Am Chem Soc 2020; 142:13136-13144. [DOI: 10.1021/jacs.0c05434] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ya-Ming Tian
- Institut für Anorganische Chemie, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Xiao-Ning Guo
- Institut für Anorganische Chemie, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Zhu Wu
- Institut für Anorganische Chemie, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Alexandra Friedrich
- Institut für Anorganische Chemie, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, New Brunswick E4L 1G8, Canada
| | - Holger Braunschweig
- Institut für Anorganische Chemie, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Udo Radius
- Institut für Anorganische Chemie, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Todd B. Marder
- Institut für Anorganische Chemie, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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