1
|
Zhang S, Zhou R, Zhang N, An Y, Liu Z, Chen XM, Li Q. Mechanical Bond Induced Enhancement and Purification of Pyrene Emission in the Solid State. Chemistry 2024; 30:e202400741. [PMID: 38745544 DOI: 10.1002/chem.202400741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 05/14/2024] [Accepted: 05/14/2024] [Indexed: 05/16/2024]
Abstract
To address key concerns on solid-state pyrene-based luminescent materials, we propose a novel and efficient mechanical bond strategy. This strategy results in a transformation from ACQ to AIE effect and a remarkable enhancement of pyrene emission in the solid state. Moreover, an unusual purification of emission is also achieved. Through computational calculation and experimental characterisation, finally determined by X-ray diffraction analysis, we prove that the excellent emissions result from mechanical bond induced refinement of molecular arrangements, including reduced π-π stacking, well-ordered packing and enhanced structural stability. This work demonstrates the potential of mechanical bond in the field of organic luminescent molecules, providing a new avenue for developing high-performance organic luminescent materials.
Collapse
Affiliation(s)
- Shu Zhang
- Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China
| | - Ru Zhou
- Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China
| | - Ningjin Zhang
- Instrumental Analytical Centre, Shanghai Jiao Tong University, Shanghai, 201100, China
| | - Yi An
- Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China
| | - Zhiyang Liu
- Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China
| | - Xu-Man Chen
- Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China
| | - Quan Li
- Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China
- Materials Science Graduate Program, Kent State University, Kent, OH, 44242, USA
| |
Collapse
|
2
|
Zubkov MO, Dilman AD. Radical reactions enabled by polyfluoroaryl fragments: photocatalysis and beyond. Chem Soc Rev 2024; 53:4741-4785. [PMID: 38536104 DOI: 10.1039/d3cs00889d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Polyfluoroarenes have been known for a long time, but they are most often used as fluorinated building blocks for the synthesis of aromatic compounds. At the same time, due to peculiar fluorine effect, they have unique properties that provide applications in various fields ranging from synthesis to materials science. This review summarizes advances in the radical chemistry of polyfluoroarenes, which have become possible mainly with the advent of photocatalysis. Transformations of the fluorinated ring via the C-F bond activation, as well as use of fluoroaryl fragments as activating groups and hydrogen atom transfer agents are discussed. The ability of fluoroarenes to serve as catalysts is also considred.
Collapse
Affiliation(s)
- Mikhail O Zubkov
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky prosp. 47, 119991 Moscow, Russian Federation.
| | - Alexander D Dilman
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky prosp. 47, 119991 Moscow, Russian Federation.
| |
Collapse
|
3
|
Lucas Kane D, Figula BC, Balaraman K, Bertke JA, Wolf C. General alkyl fluoride functionalization via short-lived carbocation-organozincate ion pairs. Nat Commun 2024; 15:1866. [PMID: 38424080 PMCID: PMC10904780 DOI: 10.1038/s41467-024-45756-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 02/05/2024] [Indexed: 03/02/2024] Open
Abstract
Fluorinated organic compounds are frequently used across the chemical and life sciences. Although a large, structurally diverse pool of alkyl fluorides is nowadays available, synthetic applications trail behind the widely accepted utility of other halides. We envisioned that C(sp2)-C(sp3) cross-coupling reactions of alkyl fluorides with fluorophilic organozinc compounds should be possible through a heterolytic mechanism that involves short-lived ion pairs and uses the stability of the Zn-F bond as the thermodynamic driving force. This would be mechanistically different from previously reported radical reactions and overcome long-standing limitations of organometallic cross-coupling methodology, including competing β-hydride elimination, homodimerization and hydrodefluorination. Here, we show a practical Csp3-F bond functionalization method that expands the currently restricted synthetic space of unactivated primary, secondary and tertiary C(sp3)-F bonds but also uses benzylic, propargylic and acyl fluorides. Many functional groups and sterically demanding substrates are tolerated, which allows practical carbon-carbon bond formation and late-stage functionalization.
Collapse
Affiliation(s)
- D Lucas Kane
- Georgetown University, Chemistry Department, Washington, DC, 20057, USA
| | - Bryan C Figula
- Georgetown University, Chemistry Department, Washington, DC, 20057, USA
| | - Kaluvu Balaraman
- Georgetown University, Chemistry Department, Washington, DC, 20057, USA
| | - Jeffery A Bertke
- Georgetown University, Chemistry Department, Washington, DC, 20057, USA
| | - Christian Wolf
- Georgetown University, Chemistry Department, Washington, DC, 20057, USA.
| |
Collapse
|
4
|
Paderina A, Slavova S, Petrovskii S, Grachova E. Alkynylphosphonium Pt(II) Complexes: Synthesis, Characterization, and Features of Photophysical Properties in Solution and in the Solid State. Inorg Chem 2023; 62:18056-18068. [PMID: 37886882 DOI: 10.1021/acs.inorgchem.3c02209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
A series of heteroleptic bis-alkynyl-diimine mononuclear Pt(II) complexes with alkynylphosphonium and di-tert-butyl-2,2'-bipyridine (dtbpy) ligands have been prepared and characterized by spectroscopic methods and single-crystal XRD. The Pt(II) complexes obtained in the present study demonstrate triplet emission in solution, which originates from 3MLCT/3LC states where the nature of the π-conjugated linker in the alkynylphosphonium ligand manages the contributions of each transition, and this conclusion is supported by DFT calculations. Additionally, the presence of the phosphonium group connected to alkynyl through the π-conjugated linker enhances nonlinear optical properties of the Pt(II) complexes increasing two-photon absorption cross section up to 400 GM. In the solid state, the Pt(II) complexes demonstrate emission that is attributed to 3MMLCT transitions due to the presence of Pt-Pt metallophilic interactions, and the reversible assembly and disassembly of these interactions by grinding and solvent treatment are responsible for the mechanochromic luminescence. It has been experimentally shown that stimuli-responsive emission of the Pt(II) complexes is the result of a "monomer/dimer" transformation; this conclusion is confirmed by DFT calculations for discrete complexes and different dimers with or without Pt-Pt interactions.
Collapse
Affiliation(s)
- Aleksandra Paderina
- Institute of Chemistry, St Petersburg University, Universitetskii pr 26, St. Petersburg 198504, Russia
| | - Sofia Slavova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Stanislav Petrovskii
- Institute of Chemistry, St Petersburg University, Universitetskii pr 26, St. Petersburg 198504, Russia
| | - Elena Grachova
- Institute of Chemistry, St Petersburg University, Universitetskii pr 26, St. Petersburg 198504, Russia
| |
Collapse
|
5
|
Zeng LY, Qu PZ, Tao M, Pu G, Jia J, Wang P, Shang M, Li X, He CY. Synthesis of Alkylated Polyfluorobenzenes through Decarboxylative Giese Addition of Aliphatic N-Hydroxyphthalimide Esters with Polyfluorostyrene. J Org Chem 2023; 88:14105-14114. [PMID: 37708081 DOI: 10.1021/acs.joc.3c01672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
Polyfluoroaromatic compounds play crucial roles in medicinal and material science. However, the synthesis of alkylated polyfluoroarenes has been relatively underdeveloped. In this study, we devised a novel decarboxylative coupling reaction between aliphatic N-hydroxyphthalimide esters and polyfluorostyrene, leveraging the photochemical activity of electron donor-acceptor (EDA) complexes. This method offers simple reaction conditions, a broad substrate scope, and excellent functional group tolerance. Furthermore, we have demonstrated the practicality of this protocol through late-stage polyfluoroaryl modification of biologically active molecules using readily available carboxylic acids as starting materials, thus providing an important supplement to the current toolbox for accessing alkylated polyfluoroaryl motifs.
Collapse
Affiliation(s)
- Lin-Yuan Zeng
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Zunyi Medical University, Zunyi, Guizhou 563003, P.R. China
| | - Pei-Zhen Qu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Zunyi Medical University, Zunyi, Guizhou 563003, P.R. China
| | - Maoling Tao
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Zunyi Medical University, Zunyi, Guizhou 563003, P.R. China
| | - Guoliang Pu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Zunyi Medical University, Zunyi, Guizhou 563003, P.R. China
| | - Jia Jia
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Zunyi Medical University, Zunyi, Guizhou 563003, P.R. China
| | - Pan Wang
- Department of Nuclear Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi Medical University, Zunyi, Guizhou 563003, P.R. China
| | - Maocai Shang
- Department of Nuclear Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi Medical University, Zunyi, Guizhou 563003, P.R. China
| | - Xuefei Li
- Central Research Institute, United-Imaging Healthcare Group Co., Ltd, Shanghai 201807, P.R. China
| | - Chun-Yang He
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Zunyi Medical University, Zunyi, Guizhou 563003, P.R. China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, School of Pharmacy, Zunyi Medical University, Zunyi 563003, P.R. China
| |
Collapse
|
6
|
Ren XJ, Liao PW, Sheng H, Wang ZX, Chen XY. N-Heterocyclic Nitrenium-Catalyzed Photohomolysis of CF 3SO 2Cl for Alkene Trifluoromethylation. Org Lett 2023; 25:6189-6194. [PMID: 37578296 DOI: 10.1021/acs.orglett.3c02380] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
N-Heterocyclic nitreniums (NHNs) have been utilized as Lewis acid catalysts to activate substrates with lone pairs. Alternative to their conventional applications, we have discovered that NHNs can also serve as charge transfer complex catalysts. Herein, we present another potential of NHNs by utilizing a weak interaction between NHNs and CF3SO2Cl. The method promotes CF3SO2Cl to undergo photohomolysis, resulting in the CF3 radical. Mechanistic studies suggested that the weak interaction could be due to the π-hole effect of NHNs.
Collapse
Affiliation(s)
- Xiao-Jian Ren
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peng-Wei Liao
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - He Sheng
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhi-Xiang Wang
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou, Shandong Province 256606, China
| | - Xiang-Yu Chen
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou, Shandong Province 256606, China
| |
Collapse
|
7
|
Sheng H, Liu Q, Zhang BB, Wang ZX, Chen XY. Visible-Light-Induced N-Heterocyclic Carbene-Catalyzed Single Electron Reduction of Mono-Fluoroarenes. Angew Chem Int Ed Engl 2023; 62:e202218468. [PMID: 36633173 DOI: 10.1002/anie.202218468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/11/2023] [Accepted: 01/12/2023] [Indexed: 01/13/2023]
Abstract
Fluoroarenes are abundant and readily available feedstocks. However, due to the high reduction potentials of mono-fluoroarenes, their photoreduction remains a continuing challenge, motivating the development of efficient activation modes to address this issue. This report presents the blue light-induced N-heterocyclic carbene (NHC)-catalyzed single electron reduction of mono-fluoroarenes for biaryl cross-couplings. We discovered that under blue light irradiation, NHC/tBuOK combination could construct powerful photoactive architectures to promote single electron transfer for Caryl -F bond reduction via forming highly reducing NHC radical anion. Notably, the strategy was also successful to reduce Caryl -O, Caryl -N, and Caryl -S bonds for biaryl cross-couplings.
Collapse
Affiliation(s)
- He Sheng
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Qiang Liu
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Bei-Bei Zhang
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhi-Xiang Wang
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing, 100049, China.,Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou, Shandong Province, 256606, China
| | - Xiang-Yu Chen
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing, 100049, China.,Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou, Shandong Province, 256606, China
| |
Collapse
|
8
|
Jiang Z, Sun W, Yang Z, Pan H, Tang Z, Shi W, Xiang Y, Yan D, Teng H. Pyrene-Based D-A Molecules as Efficient Heterogeneous Catalysts for Visible-Light-Induced Aerobic Organic Transformations. CHEMSUSCHEM 2023; 16:e202202082. [PMID: 36479983 DOI: 10.1002/cssc.202202082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/06/2022] [Indexed: 06/17/2023]
Abstract
In this work, an efficient visible light promoted aerobic dehydro-coupling of amines, oxidation of thioethers and hydroxylation of arylboronic acids under benign conditions by using pyrene-based donor-acceptor (D-A) conjugated organic molecules was described. Donor-acceptor structure influences their π-conjugation and band gap a lot, and thereby enhances their visible light absorption ability, single electron transfer and oxidative behaviors. Alkynyl units in PS-IV play a crucial role in the catalyst which could serve as electron transferring bridge to strengthen electron delocalization, thus facilitating the single electron transfer from photosensitizer to substrates, and making it an efficient ⋅O2 - generator. While PS-III without alkynyl units tends to produce 1 O2 . Therefore, these molecules can serve as efficient catalysts for different kinds of visible-light-induced aerobic organic reactions. More importantly, the simply structured molecule is insoluble and stable in various solvents, and thus could be recycled as heterogeneous catalyst for many rounds with slight catalytic activity degradation. Besides, large scale (1 mol) reaction of benzylamine coupling proceeded smoothly under the standard conditions.
Collapse
Affiliation(s)
- Zhihui Jiang
- College of Science, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Wenhao Sun
- College of Science, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Zhenyan Yang
- College of Science, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Hui Pan
- Jingzhou Institute for Food and Drug Control, Jingzhou, 434000, P. R. China
| | - Zubing Tang
- Downhole Operation Branch of Sinopec Southwest Petroleum Engineering Corporation, Deyang, 618000, P. R. China
| | - Wei Shi
- College of Science, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Yonggang Xiang
- College of Science, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Dingce Yan
- Analytical and Testing Center, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Huailong Teng
- College of Science, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| |
Collapse
|
9
|
Matsuo B, Majhi J, Granados A, Sharique M, Martin RT, Gutierrez O, Molander GA. Transition metal-free photochemical C-F activation for the preparation of difluorinated-oxindole derivatives. Chem Sci 2023; 14:2379-2385. [PMID: 36873833 PMCID: PMC9977406 DOI: 10.1039/d2sc06179a] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 02/02/2023] [Indexed: 02/11/2023] Open
Abstract
The development of strategies for single and selective C-F bond activation represents an important avenue to overcome limitations in the synthesis of valuable fluorine-containing compounds. The synthetic and medicinal research communities would benefit from new routes that access such relevant molecules in a simple manner. Herein we disclose a straightforward and mechanistically distinct pathway to generate gem-difluoromethyl radicals and their installation onto N-arylmethacrylamides for the preparation of valuable difluorinated oxindole derivatives. To achieve operational simplicity, the use of a readily available benzenethiol as a photocatalyst under open-to-air conditions was developed, demonstrating the facile multigram preparation of the targeted fluorinated molecules. Additionally, dispersion-corrected density functional theory (DFT) and empirical investigations provide a new basis to support the proposed reaction pathway, indicating that arene thiolate is an efficient organophotocatalyst for this transformation.
Collapse
Affiliation(s)
- Bianca Matsuo
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Jadab Majhi
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Albert Granados
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Mohammed Sharique
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Robert T Martin
- Department of Chemistry and Biochemistry, University of Maryland, 8051 Regents Drive College Park Maryland 20742 USA
| | - Osvaldo Gutierrez
- Department of Chemistry and Biochemistry, University of Maryland, 8051 Regents Drive College Park Maryland 20742 USA.,Department of Chemistry, Texas A&M University 580 Ross St. College Station Texas 77843 USA
| | - Gary A Molander
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| |
Collapse
|
10
|
Wu FP, Gu XW, Geng HQ, Wu XF. Copper-catalyzed defluorinative arylboration of vinylarenes with polyfluoroarenes. Chem Sci 2023; 14:2342-2347. [PMID: 36873842 PMCID: PMC9977451 DOI: 10.1039/d2sc06472c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 02/06/2023] [Indexed: 02/09/2023] Open
Abstract
An unprecedented but challenging defluorinative arylboration has been achieved. Enabled by a copper catalyst, an interesting procedure on defluorinative arylboration of styrenes has been established. With polyfluoroarenes as the substrates, this methodology offers flexible and facile access to provide a diverse assortment of products under mild reaction conditions. In addition, by using a chiral phosphine ligand, an enantioselective defluorinative arylboration was also realized, affording a set of chiral products with unprecedented levels of enantioselectivity.
Collapse
Affiliation(s)
- Fu-Peng Wu
- Leibniz-Institut für Katalyse e.V. Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Xing-Wei Gu
- Leibniz-Institut für Katalyse e.V. Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Hui-Qing Geng
- Leibniz-Institut für Katalyse e.V. Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Xiao-Feng Wu
- Leibniz-Institut für Katalyse e.V. Albert-Einstein-Straße 29a 18059 Rostock Germany .,Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 116023 Dalian Liaoning China
| |
Collapse
|
11
|
Advances in Catalytic C–F Bond Activation and Transformation of Aromatic Fluorides. Catalysts 2022. [DOI: 10.3390/catal12121665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The activation and transformation of C–F bonds in fluoro-aromatics is a highly desirable process in organic chemistry. It provides synthetic methods/protocols for the generation of organic compounds possessing single or multiple C–F bonds, and effective catalytic systems for further study of the activation mode of inert chemical bonds. Due to the high polarity of the C–F bond and it having the highest bond energy in organics, C–F activation often faces considerable academic challenges. In this mini-review, the important research achievements in the activation and transformation of aromatic C–F bond, catalyzed by transition metal and metal-free systems, are presented.
Collapse
|
12
|
Synthesis and Characterisation of Novel Bis(diphenylphosphane oxide)methanidoytterbium(III) Complexes. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227704. [PMID: 36431801 PMCID: PMC9698226 DOI: 10.3390/molecules27227704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 10/28/2022] [Accepted: 10/29/2022] [Indexed: 11/11/2022]
Abstract
Reaction of [YbCp2(dme)] (Cp = cyclopentadienyl, dme = 1,2 dimethoxyethane) with bis(diphenylphosphano)methane dioxide (H2dppmO2) leads to deprotonation of the ligand H2dppmO2 and oxidation of ytterbium, forming an extremely air-sensitive product, [YbIII(HdppmO2)3] (1), a six-coordinate complex with three chelating (OPCHPO) HdppmO2 ligands. Complex 1 was also obtained by a redox transmetallation/protolysis synthesis from metallic ytterbium, Hg(C6F5)2, and H2dppmO2. In a further preparation, the reaction of [Yb(C6F5)2] with H2dppmO2, not only yielded compound 1, but also gave a remarkable tetranuclear cage, [Yb4(µ-HdppmO2)6(µ-F)6] (2) containing two [Yb(µ-F)]2 rhombic units linked by two fluoride ligands and the tetranuclear unit is encapsulated by six bridging HdppmO2 donors. The fluoride ligands of the cage result from C-F activation of pentafluorobenzene and concomitant formation of p-H2C6F4 and m-H2C6F4, the last being an unexpected product.
Collapse
|
13
|
Moore JT, Dorantes MJ, Pengmei Z, Schwartz TM, Schaffner J, Apps SL, Gaggioli CA, Das U, Gagliardi L, Blank DA, Lu CC. Light-Driven Hydrodefluorination of Electron-Rich Aryl Fluorides by an Anionic Rhodium-Gallium Photoredox Catalyst. Angew Chem Int Ed Engl 2022; 61:e202205575. [PMID: 36017770 PMCID: PMC9826370 DOI: 10.1002/anie.202205575] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Indexed: 01/11/2023]
Abstract
An anionic Rh-Ga complex catalyzed the hydrodefluorination of challenging C-F bonds in electron-rich aryl fluorides and trifluoromethylarenes when irradiated with violet light in the presence of H2 , a stoichiometric alkoxide base, and a crown-ether additive. Based on theoretical calculations, the lowest unoccupied molecular orbital (LUMO), which is delocalized across both the Rh and Ga atoms, becomes singly occupied upon excitation, thereby poising the Rh-Ga complex for photoinduced single-electron transfer (SET). Stoichiometric and control reactions support that the C-F activation is mediated by the excited anionic Rh-Ga complex. After SET, the proposed neutral Rh0 intermediate was detected by EPR spectroscopy, which matched the spectrum of an independently synthesized sample. Deuterium-labeling studies corroborate the generation of aryl radicals during catalysis and their subsequent hydrogen-atom abstraction from the THF solvent to generate the hydrodefluorinated arene products. Altogether, the combined experimental and theoretical data support an unconventional bimetallic excitation that achieves the activation of strong C-F bonds and uses H2 and base as the terminal reductant.
Collapse
Affiliation(s)
- James T. Moore
- Department of ChemistryUniversity of Minnesota207 Pleasant Street SEMinneapolisMinnesota55455-0431USA
| | - Michael J. Dorantes
- Department of ChemistryUniversity of Minnesota207 Pleasant Street SEMinneapolisMinnesota55455-0431USA
| | - Zihan Pengmei
- Department of ChemistryUniversity of Minnesota207 Pleasant Street SEMinneapolisMinnesota55455-0431USA
| | - Timothy M. Schwartz
- Department of ChemistryUniversity of Minnesota207 Pleasant Street SEMinneapolisMinnesota55455-0431USA,Institut für Anorganische ChemieUniversität BonnGerhard-Domagk-Str. 1Bonn53121Deutschland
| | - Jacob Schaffner
- Department of ChemistryUniversity of Minnesota207 Pleasant Street SEMinneapolisMinnesota55455-0431USA
| | - Samantha L. Apps
- Department of ChemistryUniversity of Minnesota207 Pleasant Street SEMinneapolisMinnesota55455-0431USA
| | - Carlo A. Gaggioli
- Department of ChemistryUniversity of Chicago5735 S Ellis Ave.ChicagoIllinois60637USA
| | - Ujjal Das
- Institut für Anorganische ChemieUniversität BonnGerhard-Domagk-Str. 1Bonn53121Deutschland
| | - Laura Gagliardi
- Department of ChemistryUniversity of Chicago5735 S Ellis Ave.ChicagoIllinois60637USA
| | - David A. Blank
- Department of ChemistryUniversity of Minnesota207 Pleasant Street SEMinneapolisMinnesota55455-0431USA
| | - Connie C. Lu
- Department of ChemistryUniversity of Minnesota207 Pleasant Street SEMinneapolisMinnesota55455-0431USA,Institut für Anorganische ChemieUniversität BonnGerhard-Domagk-Str. 1Bonn53121Deutschland
| |
Collapse
|
14
|
Bo ZY, Yan SS, Gao TY, Song L, Ran CK, He Y, Zhang W, Cao GM, Yu DG. Visible-light photoredox-catalyzed selective carboxylation of C(sp2)−F bonds in polyfluoroarenes with CO2. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(22)64140-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|
15
|
Moore JT, Dorantes MJ, Pengmei Z, Schwartz TM, Schaffner J, Apps SL, Gaggioli CA, Das U, Gagliardi L, Blank DA, Lu CC. Light‐Driven Hydrodefluorination of Electron‐Rich Aryl Fluorides by an Anionic Rhodium‐Gallium Photoredox Catalyst. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205575] [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)
- James T. Moore
- University of Minnesota College of Science and Engineering Chemistry UNITED STATES
| | - Michael J. Dorantes
- University of Minnesota College of Science and Engineering Chemistry UNITED STATES
| | - Zihan Pengmei
- University of Chicago Department of Chemistry Chemistry UNITED STATES
| | - Timothy M. Schwartz
- University of Bonn: Rheinische Friedrich-Wilhelms-Universitat Bonn Inorganic Chemistry GERMANY
| | - Jacob Schaffner
- University of Minnesota College of Science and Engineering Chemistry UNITED STATES
| | - Samantha L. Apps
- University of Minnesota College of Science and Engineering Chemistry UNITED STATES
| | - Carlo A. Gaggioli
- University of Chicago Department of Chemistry Chemistry UNITED STATES
| | - Ujjal Das
- University of Bonn: Rheinische Friedrich-Wilhelms-Universitat Bonn Inorganic Chemistry GERMANY
| | - Laura Gagliardi
- University of Chicago Department of Chemistry Chemistry UNITED STATES
| | - David A. Blank
- University of Minnesota College of Science and Engineering Chemistry UNITED STATES
| | - Connie C. Lu
- University of Minnesota College of Science and Engineering Chemistry Gerhard-Domagk-Straße 1 53121 Bonn GERMANY
| |
Collapse
|
16
|
Balaraman K, Wolf C. Chemodivergent Csp 3─F bond functionalization and cross-electrophile alkyl-alkyl coupling with alkyl fluorides. SCIENCE ADVANCES 2022; 8:eabn7819. [PMID: 35622926 PMCID: PMC9140971 DOI: 10.1126/sciadv.abn7819] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The widespread use of fluorinated organic compounds in the health, agrochemical, and materials sciences is sustained by a steadily growing pool of commercially available fine chemicals. The synthetic utility of the increasingly ubiquitous Csp3─F bond, however, remains to be fully exploited, which is often a difficult task because of its paramount stability and chemical inertness. Here, we demonstrate chemodivergent activation of monofluoroalkyl compounds toward either nucleophilic or electrophilic intermediates. This is accomplished under conditions that are compatible with several reaction types and many functional groups, which drastically widens the current scope of organofluorine chemistry and sets the stage for carbon-carbon and carbon-heteroatom bond formations, stereoselective construction of bisoxindole alkaloid scaffolds via in situ Umpolung, and cross-electrophilic coupling methodology. The selective generation of either nucleophilic or electrophilic species and the possibility of doing so simultaneously or, alternatively, switching molecular polarity enable previously unidentified synthetic opportunities that recognize alkyl fluorides as chemodivergent building blocks.
Collapse
|
17
|
Yan G. Photochemical and Electrochemical Strategies for Hydrodefluorination of Fluorinated Organic Compounds. Chemistry 2022; 28:e202200231. [PMID: 35301767 DOI: 10.1002/chem.202200231] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Indexed: 12/20/2022]
Abstract
Hydrodefluorination (HDF) is a very important fundamental transformation for conversion of the C-F bond into the C-H bond in organic synthesis. In the past decade, much progress has been achieved with HDF through the utility of low-valent metals, transition-metal complexes and main-group Lewis acids. Recently, novel methods have been introduced for this purpose through photo- and electrochemical pathways, which are of great significance, due to their considerable environmental and economical advantages. This Review highlights the HDF of fluorinated organic compounds (FOCs) through photo- and electrochemical strategies, along with mechanistic insights.
Collapse
Affiliation(s)
- Guobing Yan
- Department of Chemistry, College of Jiyang, Zhejiang A&F University, Zhuji, Zhejiang, 311800, P. R. China
| |
Collapse
|
18
|
Sekine K, Kuninobu Y, Shiozuka A. Photoinduced Organic Reactions by Employing Pyrene Catalysts. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1739-4793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
AbstractPyrene is one of the most attractive polycyclic aromatic hydrocarbons (PAHs) in photochemistry. Based on their redox properties, pyrenes have potential as photosensitizers. In this review, we summarize recent developments in pyrene-catalyzed photoinduced organic reactions occurring via energy transfer or single-electron transfer based on the excited state of the pyrene.1 Introduction2 Photolysis Involving N–O Bond Cleavage or Decarboxylation3 (Cyclo)addition Reactions with Styrenes4 Transformations via Cleavage of C–F, C–I, C–S and C–N Bonds5 Reactions Based on Sensitization-Initiated Electron Transfer (SenI-ET)6 Miscellaneous Transformations7 Conclusion
Collapse
Affiliation(s)
- Kohei Sekine
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
- Institute for Materials Chemistry and Engineering, Kyushu University
| | - Yoichiro Kuninobu
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
- Institute for Materials Chemistry and Engineering, Kyushu University
| | - Akira Shiozuka
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
| |
Collapse
|
19
|
Zhang J, Zhao X, Yang JD, Cheng JP. Diazaphospholene-Catalyzed Hydrodefluorination of Polyfluoroarenes with Phenylsilane via Concerted Nucleophilic Aromatic Substitution. J Org Chem 2021; 87:294-300. [PMID: 34933552 DOI: 10.1021/acs.joc.1c02360] [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
The metal-free catalytic C-F bond activation of polyfluoroarenes was achieved with diazaphospholene as the catalyst and phenylsilane as the terminal reductant. Density functional theory calculations suggested a concerted nucleophilic aromatic substitution mechanism.
Collapse
Affiliation(s)
- Jingjing Zhang
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xiao Zhao
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jin-Dong Yang
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jin-Pei Cheng
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing 100084, China.,State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| |
Collapse
|
20
|
Wang J, Gao H, Shi C, Chen G, Tan X, Chen X, Xu L, Cai X, Huang B, Li H. Recent advances in radical-based C-F bond activation of polyfluoroarenes and gem-difluoroalkenes. Chem Commun (Camb) 2021; 57:12203-12217. [PMID: 34714301 DOI: 10.1039/d1cc04189d] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The direct employment of polyfluoroarenes and gem-difluoroalkenes as building blocks is regarded as one of the most effective and straightforward strategies for the introduction of fluorine-containing moieties into organic skeletons. Accordingly, radical chemistry has gradually become a mild and powerful method for the activation of their C-F bonds. The radical-based transformations of polyfluoroarenes and gem-difluoroalkenes can be primarily categorized into three types based on the specific intermediates involved: (1) multifluoroaryl radical anions, (2) monofluoroalkenyl radicals and (3) other radicals. Compared with the more established multifluoroaryl radical anion pathway, the monofluoroalkenyl radical-involved cross-coupling reaction can proceed through C-radical cross-coupling, radical addition/elimination or the hydrogen atom transfer process. For the presented examples in this review, the typical reaction modes, substrate scope, radical-involved mechanisms, and late-stage applications in the modification of bioactive molecules are discussed, aiming to provide a comprehensive overview of the recent advances of the radical-based transformations of polyfluoroarenes and gem-difluoroalkenes.
Collapse
Affiliation(s)
- Junlei Wang
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550000, China.
| | - Han Gao
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Chengcheng Shi
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Guiling Chen
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550000, China.
| | - Xia Tan
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550000, China.
| | - Xuemei Chen
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550000, China.
| | - Lei Xu
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550000, China.
| | - Xiaodong Cai
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550000, China.
| | - Binbin Huang
- College of Education for the Future, Beijing Normal University at Zhuhai, Zhuhai 519087, China.
| | - Hongqing Li
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550000, China.
| |
Collapse
|
21
|
Xu W, Zhang Q, Shao Q, Xia C, Wu M. Photocatalytic C−F Bond Activation of Fluoroarenes,
gem
‐Difluoroalkenes and Trifluoromethylarenes. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100426] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Wengang Xu
- College of New Energy China University of Petroleum China East 266580 Qingdao P. R. China
| | - Qiao Zhang
- College of Chemical Engineering State Key Laboratory of Heavy Oil Processing China University of Petroleum (China East) 266580 Qingdao P. R. China
| | - Qi Shao
- College of Chemical Engineering State Key Laboratory of Heavy Oil Processing China University of Petroleum (China East) 266580 Qingdao P. R. China
| | - Congjian Xia
- College of Chemical Engineering State Key Laboratory of Heavy Oil Processing China University of Petroleum (China East) 266580 Qingdao P. R. China
| | - Mingbo Wu
- College of New Energy China University of Petroleum China East 266580 Qingdao P. R. China
- College of Chemical Engineering State Key Laboratory of Heavy Oil Processing China University of Petroleum (China East) 266580 Qingdao P. R. China
| |
Collapse
|
22
|
Toriumi N, Yamashita K, Iwasawa N. Metal-Free Photoredox-Catalyzed Hydrodefluorination of Fluoroarenes Utilizing Amide Solvent as Reductant. Chemistry 2021; 27:12635-12641. [PMID: 34190366 DOI: 10.1002/chem.202101813] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Indexed: 12/15/2022]
Abstract
A metal-free photoredox-catalyzed hydrodefluorination of fluoroarenes was achieved by using N,N,N',N'-tetramethyl-para-phenylenediamine (1) as a strong photoreduction catalyst. This reaction was applicable not only to electron-rich monofluoroarenes but also to polyfluoroarenes to afford non-fluorinated arenes. The experimental mechanistic studies indicated that the amide solvent NMP plays an important role for regeneration of the photocatalyst, enabling additive-free photoreduction catalysis.
Collapse
Affiliation(s)
- Naoyuki Toriumi
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Kazuya Yamashita
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Nobuharu Iwasawa
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| |
Collapse
|
23
|
Abstract
AbstractThe unique properties of fluorine-containing organic compounds make fluorine substitution attractive for the development of pharmaceuticals and various specialty materials, which have inspired the evolution of diverse C-F bond activation techniques. Although many advances have been made in functionalizations of activated C-F bonds utilizing transition metal complexes, there are fewer approaches available for nonactivated C-F bonds due to the difficulty in oxidative addition of transition metals to the inert C-F bonds. In this regard, using Lewis acid to abstract the fluoride and light/radical initiator to generate the radical intermediate have emerged as powerful tools for activating those inert C-F bonds. Meanwhile, these transition-metal-free processes are greener, economical, and for the pharmaceutical industry, without heavy metal residues. This review provides an overview of recent C-F bond activations and functionalizations under transition-metal-free conditions. The key mechanisms involved are demonstrated and discussed in detail. Finally, a brief discussion on the existing limitations of this field and our perspective are presented.
Collapse
|
24
|
Pang Y, Leutzsch M, Nöthling N, Katzenburg F, Cornella J. Catalytic Hydrodefluorination via Oxidative Addition, Ligand Metathesis, and Reductive Elimination at Bi(I)/Bi(III) Centers. J Am Chem Soc 2021; 143:12487-12493. [PMID: 34358426 PMCID: PMC8377712 DOI: 10.1021/jacs.1c06735] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Herein, we report a hydrodefluorination reaction of polyfluoroarenes catalyzed by bismuthinidenes, Phebox-Bi(I) and OMe-Phebox-Bi(I). Mechanistic studies on the elementary steps support a Bi(I)/Bi(III) redox cycle that comprises C(sp2)-F oxidative addition, F/H ligand metathesis, and C(sp2)-H reductive elimination. Isolation and characterization of a cationic Phebox-Bi(III)(4-tetrafluoropyridyl) triflate manifests the feasible oxidative addition of Phebox-Bi(I) into the C(sp2)-F bond. Spectroscopic evidence was provided for the formation of a transient Phebox-Bi(III)(4-tetrafluoropyridyl) hydride during catalysis, which decomposes at low temperature to afford the corresponding C(sp2)-H bond while regenerating the propagating Phebox-Bi(I). This protocol represents a distinct catalytic example where a main-group center performs three elementary organometallic steps in a low-valent redox manifold.
Collapse
Affiliation(s)
- Yue Pang
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, Mülheim an der Ruhr 45470, Germany
| | - Markus Leutzsch
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, Mülheim an der Ruhr 45470, Germany
| | - Nils Nöthling
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, Mülheim an der Ruhr 45470, Germany
| | - Felix Katzenburg
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, Mülheim an der Ruhr 45470, Germany
| | - Josep Cornella
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, Mülheim an der Ruhr 45470, Germany
| |
Collapse
|
25
|
Zhu B, Sakaki S. C(sp 3)–F Bond Activation and Hydrodefluorination of the CF 3 Group Catalyzed by a Nickel(II) Hydride Complex: Theoretical Insight into the Mechanism with a Spin-State Change and Two Ion-Pair Intermediates. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02251] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Bo Zhu
- Element Strategy Initiative for Catalysts and Batteries, Kyoto University, Goryo-Ohara 1-30, Nishikyo-ku, Kyoto 615-8245, Japan
| | - Shigeyoshi Sakaki
- Element Strategy Initiative for Catalysts and Batteries, Kyoto University, Goryo-Ohara 1-30, Nishikyo-ku, Kyoto 615-8245, Japan
| |
Collapse
|
26
|
Day JI, Grotjahn S, Senaweera S, Koenig B, Weaver Iii JD. Defluorodearomatization: A Photocatalytic Birch-Like Reduction That Enables C-C Bond Formation and Provides Access to Unnatural Cannabinoids. J Org Chem 2021; 86:7928-7945. [PMID: 34076434 PMCID: PMC8716186 DOI: 10.1021/acs.joc.1c00169] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Within the framework of discovery chemistry, polyfluorination remains a synthetic challenge despite its ability to provide useful characteristics, such as a reduction in the number of hydrogen bond donors and metabolic stability. Coupling a reversal of this methodology with photocatalysis has been demonstrated to allow the rapid synthesis of previously difficult or impossible targets by starting with fluorines everywhere and selectively removing or functionalizing them. Herein, we demonstrate a novel method to synthesize 1,4-cyclohexadienes through a dearomative photocatalytic C-C coupling reaction. This allows for access to materials that are orthogonal to the selectivity of the Birch reaction and are more functional-group-tolerant. The reaction also allows the efficient synthesis of polyfluorinated cannabinoids. While the yields are modest, the access to the new chemical space provided by the reaction is unprecedented by any means. The trifluorinated analog of THC, 1-deoxy-1,2,4-trifluoro-THC, is synthesized, demonstrating the importance of discovery chemistry and the ability to explore otherwise unknown structure-activity relationships.
Collapse
Affiliation(s)
- Jon I Day
- Department of Chemistry, Oklahoma State University, 107 Physical Science, 74078 Stillwater, Oklahoma, United States
| | - Sascha Grotjahn
- Institut für Organische Chemie, Universität Regensburg, Universitätstrasse 31, 93053 Regensburg, Germany
| | - Sameera Senaweera
- Center for Drug Design, College of Pharmacy, University of Minnesota, 7-158 Phillips Wangensteen Building, 516 Delaware Street SE, Minneapolis, Minnesota 55455, United States
| | - Burkhard Koenig
- Institut für Organische Chemie, Universität Regensburg, Universitätstrasse 31, 93053 Regensburg, Germany
| | - Jimmie D Weaver Iii
- Department of Chemistry, Oklahoma State University, 107 Physical Science, 74078 Stillwater, Oklahoma, United States
| |
Collapse
|
27
|
|
28
|
Li MJ, Wang HJ, Yuan R, Chai YQ. A sensitive label-free photoelectrochemical aptasensor based on a novel PTB7-Th/H2O2 system with unexpected photoelectric performance for C-reactive protein analysis. Biosens Bioelectron 2021; 181:113162. [DOI: 10.1016/j.bios.2021.113162] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 03/04/2021] [Accepted: 03/08/2021] [Indexed: 12/11/2022]
|
29
|
Zhou H, He F, Chong Y, He L, Jiang J, Luo Y, Zhang G. Bridged Azobenzene Enables Dynamic Control of Through-Space Charge Transfer for Photochemical Conversion. J Phys Chem Lett 2021; 12:3868-3874. [PMID: 33856794 DOI: 10.1021/acs.jpclett.1c00772] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Through-space charge transfer (TSCT) has become a thriving strategy of modulating photogenerated charges in organic photoresponsive molecular systems for potential applications in luminescence, optoelectronics, and photochemical conversion. Yet fixed configuration between electron donor (D) and acceptor (A) is disadvantageous to mitigate charge recombination undermining their performances. By carrying out first-principle simulations, we proposed a protocol enabling dynamic control of TSCT within a D-A system by use of a bridged azobenzene (BAB), whose configuration is self-adaptive upon photoexcitation. While the Z-isomer of BAB facilitates π-π stacking of D-A pair with designated frontier orbital alignment to ensure TSCT, the E-isomer of BAB breaks that stacking and restrains charge recombination. Further, as a CO2 molecule is weakly bound to the anionic acceptor, the former goes bent as a result of charge transfer from the latter, suggesting a path for photodriven CO2 reduction aided by such a donor-switch-acceptor system. Our proof-of-concept study shows the potential of using specific photoswitch to adaptively steer spatial electron transfer within stacked π systems toward photochemical conversion.
Collapse
Affiliation(s)
- Huiting Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Fuxiang He
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yuanyuan Chong
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Lixin He
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jun Jiang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yi Luo
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Guozhen Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| |
Collapse
|
30
|
Williams CK, Lashgari A, Devi N, Ang M, Chaturvedi A, Dhungana P, Jiang JJ. Hydrodechlorination of Dichloromethane by a Metal-Free Triazole-Porphyrin Electrocatalyst: Demonstration of Main-Group Element Electrocatalysis*. Chemistry 2021; 27:6240-6246. [PMID: 33476410 DOI: 10.1002/chem.202005012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Indexed: 01/17/2023]
Abstract
In this work, the electrocatalytic reduction of dichloromethane (CH2 Cl2 ) into hydrocarbons involving a main group element-based molecular triazole-porphyrin electrocatalyst H2PorT8 is reported. This catalyst converted CH2 Cl2 in acetonitrile to various hydrocarbons (methane, ethane, and ethylene) with a Faradaic efficiency of 70 % and current density of -13 mA cm-2 at a potential of -2.2 V vs. Fc/Fc+ using water as a proton source. The findings of this study and its mechanistic interpretations demonstrated that H2PorT8 was an efficient and stable catalyst for the hydrodechlorination of CH2 Cl2 and that main group catalysts could be potentially used for exploring new catalytic reaction mechanisms.
Collapse
Affiliation(s)
- Caroline K Williams
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio, 45221-0172, United States
| | - Amir Lashgari
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio, 45221-0172, United States
| | - Nilakshi Devi
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio, 45221-0172, United States
| | - Marcus Ang
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio, 45221-0172, United States
| | - Ashwin Chaturvedi
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio, 45221-0172, United States
| | - Pranita Dhungana
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio, 45221-0172, United States
| | - Jianbing Jimmy Jiang
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio, 45221-0172, United States
| |
Collapse
|
31
|
Zhang H, Han J, Jin X, Duan P. Improving the Overall Properties of Circularly Polarized Luminescent Materials Through Arene–Perfluoroarene Interactions. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014891] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Haowen Zhang
- College of Chemistry Zhengzhou University No.100 Science Avenue Zhengzhou 450001 P. R. China
| | - Jianlei Han
- CAS Center for Excellence in Nanoscience CAS Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and Technology (NCNST), ZhongGuanCun BeiYiTiao Beijing 100190 P. R. China
| | - Xue Jin
- CAS Center for Excellence in Nanoscience CAS Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and Technology (NCNST), ZhongGuanCun BeiYiTiao Beijing 100190 P. R. China
| | - Pengfei Duan
- College of Chemistry Zhengzhou University No.100 Science Avenue Zhengzhou 450001 P. R. China
- CAS Center for Excellence in Nanoscience CAS Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and Technology (NCNST), ZhongGuanCun BeiYiTiao Beijing 100190 P. R. China
- University of Chinese Academy of Sciences No.19(A) Yuquan Road, Shijingshan District Beijing 100049 P. R. China
| |
Collapse
|
32
|
Zhang H, Han J, Jin X, Duan P. Improving the Overall Properties of Circularly Polarized Luminescent Materials Through Arene-Perfluoroarene Interactions. Angew Chem Int Ed Engl 2021; 60:4575-4580. [PMID: 33236479 DOI: 10.1002/anie.202014891] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Indexed: 11/06/2022]
Abstract
A major trade-off in the field of circularly polarized luminescence (CPL) of pure organic materials is that the large luminescence dissymmetry factor (glum ) usually gives rise to the suppression of luminescence efficiency (ΦPL ). Here, a supramolecular self-assembled system, driven by arene-perfluoroarene (AP) interactions of chiral polycyclic aromatic hydrocarbons (PAHs) and octafluoronaphthalene (OFN), is reported to provide a solution to this problem. Two kinds of chiral PAHs based on pyrene and anthracene could co-assemble with OFN in hybrid solvents to form long-range-ordered AP assemblies. The detailed process of AP interaction driving self-assembly was verified by morphological measurements and fluorescence spectra. The AP assemblies exhibited chirality amplification not only in the excited state but also in the ground state. In addition, the AP assemblies showed an enhanced luminescence efficiency compared with the individual chiral PAHs due to the energy-barrier effect of OFN. The present strategy based on AP interactions could be applied to boost the development of highly efficient CPL-active materials.
Collapse
Affiliation(s)
- Haowen Zhang
- College of Chemistry, Zhengzhou University, No.100 Science Avenue, Zhengzhou, 450001, P. R. China
| | - Jianlei Han
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), ZhongGuanCun BeiYiTiao, Beijing, 100190, P. R. China
| | - Xue Jin
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), ZhongGuanCun BeiYiTiao, Beijing, 100190, P. R. China
| | - Pengfei Duan
- College of Chemistry, Zhengzhou University, No.100 Science Avenue, Zhengzhou, 450001, P. R. China.,CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), ZhongGuanCun BeiYiTiao, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Shijingshan District, Beijing, 100049, P. R. China
| |
Collapse
|
33
|
Zheng HL, Huang SL, Luo MB, Wei Q, Chen EX, He L, Lin Q. Photochemical In Situ Exfoliation of Metal-Organic Frameworks for Enhanced Visible-Light-Driven CO 2 Reduction. Angew Chem Int Ed Engl 2020; 59:23588-23592. [PMID: 32926488 DOI: 10.1002/anie.202012019] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Indexed: 12/24/2022]
Abstract
Two novel two-dimensional metal-organic frameworks (2D MOFs), 2D-M2 TCPE (M=Co or Ni, TCPE=1,1,2,2-tetra(4-carboxylphenyl)ethylene), which are composed of staggered (4,4)-grid layers based on paddlewheel-shaped dimers, serve as heterogeneous photocatalysts for efficient reduction of CO2 to CO. During the visible-light-driven catalysis, these structures undergo in situ exfoliation to form nanosheets, which exhibit excellent stability and improved catalytic activity. The exfoliated 2D-M2 TCPE nanosheets display a high CO evolution rate of 4174 μmol g-1 h-1 and high selectivity of 97.3 % for M=Co and Ni, and thus are superior to most reported MOFs. The performance differences and photocatalytic mechanisms have been studied with theoretical calculations and photoelectric experiments. This study provides new insight for the controllable synthesis of effective crystalline photocatalysts based on structural and morphological coregulation.
Collapse
Affiliation(s)
- Hui-Li Zheng
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
| | - Shan-Lin Huang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
| | - Ming-Bu Luo
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
| | - Qin Wei
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
| | - Er-Xia Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
| | - Liang He
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
| | - Qipu Lin
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
| |
Collapse
|
34
|
Zheng H, Huang S, Luo M, Wei Q, Chen E, He L, Lin Q. Photochemical In Situ Exfoliation of Metal–Organic Frameworks for Enhanced Visible‐Light‐Driven CO
2
Reduction. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hui‐Li Zheng
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China
| | - Shan‐Lin Huang
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China
| | - Ming‐Bu Luo
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China
| | - Qin Wei
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China
| | - Er‐Xia Chen
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China
| | - Liang He
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China
| | - Qipu Lin
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China
| |
Collapse
|
35
|
Li X, Fu B, Zhang Q, Yuan X, Zhang Q, Xiong T, Zhang Q. Copper‐Catalyzed Defluorinative Hydroarylation of Alkenes with Polyfluoroarenes. Angew Chem Int Ed Engl 2020; 59:23056-23060. [DOI: 10.1002/anie.202010492] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/06/2020] [Indexed: 12/30/2022]
Affiliation(s)
- Xiaohong Li
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
| | - Bin Fu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
| | - Qiao Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
| | - Xiuping Yuan
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
| | - Qian Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
| | - Tao Xiong
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
| | - Qian Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| |
Collapse
|
36
|
Li X, Fu B, Zhang Q, Yuan X, Zhang Q, Xiong T, Zhang Q. Copper‐Catalyzed Defluorinative Hydroarylation of Alkenes with Polyfluoroarenes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010492] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Xiaohong Li
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
| | - Bin Fu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
| | - Qiao Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
| | - Xiuping Yuan
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
| | - Qian Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
| | - Tao Xiong
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
| | - Qian Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| |
Collapse
|
37
|
Light-driven activation of carbon-halogen bonds by readily available amines for photocatalytic hydrodehalogenation. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(20)63582-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
38
|
Sap JBI, Straathof NJW, Knauber T, Meyer CF, Médebielle M, Buglioni L, Genicot C, Trabanco AA, Noël T, Am Ende CW, Gouverneur V. Organophotoredox Hydrodefluorination of Trifluoromethylarenes with Translational Applicability to Drug Discovery. J Am Chem Soc 2020; 142:9181-9187. [PMID: 32379965 PMCID: PMC7304874 DOI: 10.1021/jacs.0c03881] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
![]()
Molecular
editing such as insertion, deletion, and single atom
exchange in highly functionalized compounds is an aspirational goal
for all chemists. Here, we disclose a photoredox protocol for the
replacement of a single fluorine atom with hydrogen in electron-deficient
trifluoromethylarenes including complex drug molecules. A robustness
screening experiment shows that this reductive defluorination tolerates
a range of functional groups and heterocycles commonly found in bioactive
molecules. Preliminary studies allude to a catalytic cycle whereby
the excited state of the organophotocatalyst is reductively quenched
by the hydrogen atom donor, and returned in its original oxidation
state by the trifluoromethylarene.
Collapse
Affiliation(s)
- Jeroen B I Sap
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Natan J W Straathof
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Thomas Knauber
- Pfizer Worldwide Research and Development, Groton, Connecticut 06340, United States
| | - Claudio F Meyer
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom.,Discovery Chemistry, Janssen Research and Development, Jarama 75A, Toledo E-45007, Spain
| | - Maurice Médebielle
- Univ. Lyon, Université Lyon I, CNRS, INSA, CPE-Lyon, ICBMS, UMR 5246, 1 Rue Victor Grignard, 69622 Villeurbanne cedex, France
| | - Laura Buglioni
- Micro Flow Chemistry and Synthetic Methodology, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Het Kranenveld, Bldg 14, Helix, 5600 MB Eindhoven, The Netherlands
| | - Christophe Genicot
- Global Chemistry, UCB New Medicines, UCB Biopharma Sprl, 1420 Braine-L'Alleud, Belgium
| | - Andrés A Trabanco
- Discovery Chemistry, Janssen Research and Development, Jarama 75A, Toledo E-45007, Spain
| | - Timothy Noël
- Micro Flow Chemistry and Synthetic Methodology, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Het Kranenveld, Bldg 14, Helix, 5600 MB Eindhoven, The Netherlands
| | | | - Véronique Gouverneur
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| |
Collapse
|
39
|
Iwasaki T, Murakami S, Takeda Y, Tohnai N, Kambe N. Effect of Alkyl Groups in Pyrene Chromophore on the Mechanical Response of Pyrene-Octafluoronaphthalene Co-Crystals. Chem Asian J 2020; 15:1349-1354. [PMID: 32103620 DOI: 10.1002/asia.202000138] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 02/25/2020] [Indexed: 11/06/2022]
Abstract
Changes in the photophysical properties of pyrene (Py)-octafluoronaphthalene (OFN) co-crystals (Py⋅OFN) upon mechanical stimuli are described herein. The Py⋅OFN co-crystal showed a mechano-induced bathochromic shift in emission, and a similar tendency was observed for the 1,3,6,8-tetramethylpyrene-OFN co-crystal. These shifts are due to disruption of the microscopic molecular orientation in the co-crystal, which allows for excimer formation. In sharp contrast to the parent Py⋅OFN and methyl-substituted Py-OFN co-crystals, no mechano-induced bathochromic shift was observed when longer alkyl chains were introduced to the 1-, 3-, 6-, and 8-positions of the Py chromophore. This photophysical opposability against mechanical stimuli could be explained by the orthogonally oriented alkyl groups on the Py ring, which existed between two Py cores like pillars. This fixed OFN to maintain the face-to-face alternatively stacked structure of the co-crystal and thus prevented the formation of the Py excimer. The pillar effect demonstrated herein provides a rational design for co-crystalline systems that are photophysically stable against mechanical stresses.
Collapse
Affiliation(s)
- Takanori Iwasaki
- Department of Chemistry and Biotechnology Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Shin Murakami
- Department of Applied Chemistry Graduate School of Engineering, Osaka University Suita, Osaka, 565-0871, Japan
| | - Youhei Takeda
- Department of Applied Chemistry Graduate School of Engineering, Osaka University Suita, Osaka, 565-0871, Japan
| | - Norimitsu Tohnai
- Department of Material and Life Science Graduate School of Engineering, Osaka University, Suita,
| | - Nobuaki Kambe
- Department of Applied Chemistry Graduate School of Engineering, Osaka University Suita, Osaka, 565-0871, Japan
| |
Collapse
|
40
|
Ito H, Sakai H, Suzuki Y, Kawamata J, Hasobe T. Systematic Control of Structural and Photophysical Properties of π‐Extended Mono‐ and Bis‐BODIPY Derivatives. Chemistry 2019; 26:316-325. [DOI: 10.1002/chem.201904282] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/05/2019] [Indexed: 01/31/2023]
Affiliation(s)
- Hiroaki Ito
- Department of Chemistry Faculty of Science and Technology Keio University 3-14-1 Hiyoshi Yokohama Kanagawa 223-8522 Japan
| | - Hayato Sakai
- Department of Chemistry Faculty of Science and Technology Keio University 3-14-1 Hiyoshi Yokohama Kanagawa 223-8522 Japan
| | - Yasutaka Suzuki
- Graduate School of Sciences and Technology for Innovation Yamaguchi University 1677-1 Yoshida Yamaguchi 753-8512 Japan
| | - Jun Kawamata
- Graduate School of Sciences and Technology for Innovation Yamaguchi University 1677-1 Yoshida Yamaguchi 753-8512 Japan
| | - Taku Hasobe
- Department of Chemistry Faculty of Science and Technology Keio University 3-14-1 Hiyoshi Yokohama Kanagawa 223-8522 Japan
| |
Collapse
|
41
|
Liu R, Yang L, Yang T, Huang Y, Barbatti M, Jiang J, Zhang G. Modulating Electron Transfer in an Organic Reaction via Chemical Group Modification of the Photocatalyst. J Phys Chem Lett 2019; 10:5634-5639. [PMID: 31483663 DOI: 10.1021/acs.jpclett.9b01970] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Tuning electron-transfer (ET) rates from catalysts to substrates is important for modulating photocatalytic organic reactions. In this work, we have taken pyrene-based photocatalysts (Py's) for photocatalytic hydrodefluorination of polyfluoroarenes (FAs) as model systems and conducted a first-principles study on modulating ET rates from Py to FA via the chemical modification of Py with different electron-donating/withdrawing groups (EDGs/EWGs). The computed spatial distributions of frontier Kohn-Sham orbitals suggest that ET is energetically more favorable for Py-EDGs than for Py-EWGs. The estimated ET rates by a simplified Marcus model show that they are appreciably enhanced by EDG substitution and weakened by EWG substitution. Noticeably, the associated Gibbs free-energy change plays a dominant role. Our findings of tuning ET rates for Py-FA complexes via chemical group modifications cast new insight into the rational design of metal-free photocatalysts for organic transformations.
Collapse
Affiliation(s)
- Ran Liu
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Science , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Li Yang
- Institutes of Physical Science and Information Technology , Anhui University , Hefei , Anhui 230601 , P. R. China
| | - Tongtong Yang
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Science , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Yan Huang
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Science , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Mario Barbatti
- Aix Marseille Univ, CNRS, ICR , Marseille 13397 , France
| | - Jun Jiang
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Science , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Guozhen Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Science , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| |
Collapse
|
42
|
Wang Y, Wei Y, Song W, Chen C, Zhao J. Photocatalytic Hydrodehalogenation for the Removal of Halogenated Aromatic Contaminants. ChemCatChem 2018. [DOI: 10.1002/cctc.201801222] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuanyuan Wang
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences Institute of ChemistryChinese Academy of Sciences Beijing 100190 P.R. China
- University of Chinese Academy of Sciences Beijing 100049 P.R. China
| | - Yan Wei
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences Institute of ChemistryChinese Academy of Sciences Beijing 100190 P.R. China
- University of Chinese Academy of Sciences Beijing 100049 P.R. China
| | - Wenjing Song
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences Institute of ChemistryChinese Academy of Sciences Beijing 100190 P.R. China
- University of Chinese Academy of Sciences Beijing 100049 P.R. China
| | - Chuncheng Chen
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences Institute of ChemistryChinese Academy of Sciences Beijing 100190 P.R. China
- University of Chinese Academy of Sciences Beijing 100049 P.R. China
| | - Jincai Zhao
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences Institute of ChemistryChinese Academy of Sciences Beijing 100190 P.R. China
- University of Chinese Academy of Sciences Beijing 100049 P.R. China
| |
Collapse
|
43
|
Jaeger AD, Walter R, Ehm C, Lentz D. Gallium Hydrides and O/N-Donors as Tunable Systems in C-F Bond Activation. Chem Asian J 2018; 13:2908-2915. [PMID: 30028089 DOI: 10.1002/asia.201801030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Indexed: 12/15/2022]
Abstract
The gallium hydrides (iBu)2 GaH (1 a), LiGaH4 (1 b) and Me3 N⋅GaH3 (1 c) hydrodefluorinate vinylic and aromatic C-F bonds when O and N donor molecules are present. 1 b exhibits the highest reactivity. Quantitative conversion to the hydrodefluorination (HDF) products could be observed for hexafluoropropene and 1,1,3,3,3-pentafluoropropene, 94 % conversion of pentafluoropyridine and 49 % of octafluorotoluene. Whereas for the HDF with 1 b high conversions are observed when catalytic amounts of O donor molecules are added, for 1 a, the addition of N donor molecules lead to higher conversions. The E/Z selectivity of the HDF of 1,1,3,3,3-pentafluoropropene is donor-dependent. DFT studies show that HDF proceeds in this case via the gallium hydride dimer-donor species and a hydrometallation/elimination sequence. Selectivities are sensitive to the choice of donor, as the right donor can lead to an on/off switching during catalysis, that is, the hydrometallation step is accelerated by the presence of a donor, but the donor dissociates prior to elimination, allowing the inherently more selective donorless gallium systems to determine the selectivity.
Collapse
Affiliation(s)
- Alma D Jaeger
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstr. 34-36, 14195, Berlin, Germany
| | - Ruben Walter
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstr. 34-36, 14195, Berlin, Germany
| | - Christian Ehm
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126, Napoli, Italy
| | - Dieter Lentz
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstr. 34-36, 14195, Berlin, Germany
| |
Collapse
|
44
|
Lu J, Pattengale B, Liu Q, Yang S, Shi W, Li S, Huang J, Zhang J. Donor–Acceptor Fluorophores for Energy-Transfer-Mediated Photocatalysis. J Am Chem Soc 2018; 140:13719-13725. [DOI: 10.1021/jacs.8b07271] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Jingzhi Lu
- Department of Chemistry, University of Nebraska−Lincoln, Lincoln, Nebraska 68588, United States
| | - Brian Pattengale
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201, United States
| | - Qiuhua Liu
- Department of Chemistry, University of Nebraska−Lincoln, Lincoln, Nebraska 68588, United States
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Sizhuo Yang
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201, United States
| | - Wenxiong Shi
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China
| | - Shuzhou Li
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Jier Huang
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201, United States
| | - Jian Zhang
- Department of Chemistry, University of Nebraska−Lincoln, Lincoln, Nebraska 68588, United States
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| |
Collapse
|
45
|
Mikherdov AS, Kinzhalov MA, Novikov AS, Boyarskiy VP, Boyarskaya IA, Avdontceva MS, Kukushkin VY. Ligation-Enhanced π-Hole···π Interactions Involving Isocyanides: Effect of π-Hole···π Noncovalent Bonding on Conformational Stabilization of Acyclic Diaminocarbene Ligands. Inorg Chem 2018; 57:6722-6733. [PMID: 29792332 DOI: 10.1021/acs.inorgchem.8b01027] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The reaction of cis-[PdCl2(CNXyl)2] (Xyl = 2,6-Me2C6H3) with the aminoazoles [1 H-imidazol-2-amine (1), 4 H-1,2,4-triazol-3-amine (2), 1 H-tetrazol-5-amine (3), 1 H-benzimidazol-2-amine (4), 1-alkyl-1 H-benzimidazol-2-amines, where alkyl = Me (5), Et (6)] in a 2:1 ratio in the presence of a base in CHCl3 at RT proceeds regioselectively and leads to the binuclear diaminocarbene complexes [(ClPdCNXyl)2{μ-C(N-azolyl)N(Xyl)C═NXyl}] (7-12; 73-91%). Compounds 7-12 were characterized by C, H, N elemental analyses, high-resolution ESI+-MS, Fourier transform infrared spectroscopy, 1D (1H, 13C) and 2D (1H,1H-COSY, 1H,1H-NOESY, 1H,13C-HSQC, 1H,13C-HMBC) NMR spectroscopies, and X-ray diffraction (XRDn). Inspection of the XRDn data and results of the Hirshfeld surface analysis suggest the presence in all six structures of intramolecular π-holeisocyanide···πarene interactions between the electrophilic C atom of the isocyanide moiety and the neighboring arene ring. These interactions also result in distortion of the Pd-C≡N-Xyl fragment from the linearity. Results of density functional theory calculations [M06/MWB28 (Pd) and 6-31G* (other atoms) level of theory] for model structures of 7-9 followed by the topological analysis of the electron density distribution within the framework of Bader's theory (QTAIM method) reveal the presence of these weak interactions also in a CHCl3 solution, and their calculated strength is 1.9-2.2 kcal/mol. The natural bond orbital analysis of 7-9 revealed that π(C-C)Xyl → π*(C-N)isocyanide charge transfer (CT) takes place along with the intramolecular π-holeisocyanide···πarene interactions. The observed π(C-C)Xyl → π*(C-N)isocyanide CT is due to ligation of the isocyanide to the metal center, whereas in the cases of the uncomplexed p-CNC6H4NC and CNXyl species, the effects of CT are negligible. Available CCDC data were processed from the perspective of isocyanide-involving π-hole···π interactions, disclosed the role of metal coordination in the π-hole donor ability of isocyanides, and verified the π-holeisocyanide···πarene interaction effect on the stabilization of the in-conformation in metal-bound acyclic diaminocarbenes.
Collapse
Affiliation(s)
- Alexander S Mikherdov
- Saint Petersburg State University , 7/9 Universitetskaya Nab ., Saint Petersburg , 199034 , Russian Federation
| | - Mikhail A Kinzhalov
- Saint Petersburg State University , 7/9 Universitetskaya Nab ., Saint Petersburg , 199034 , Russian Federation
| | - Alexander S Novikov
- Saint Petersburg State University , 7/9 Universitetskaya Nab ., Saint Petersburg , 199034 , Russian Federation
| | - Vadim P Boyarskiy
- Saint Petersburg State University , 7/9 Universitetskaya Nab ., Saint Petersburg , 199034 , Russian Federation
| | - Irina A Boyarskaya
- Saint Petersburg State University , 7/9 Universitetskaya Nab ., Saint Petersburg , 199034 , Russian Federation
| | - Margarita S Avdontceva
- Saint Petersburg State University , 7/9 Universitetskaya Nab ., Saint Petersburg , 199034 , Russian Federation
| | - Vadim Yu Kukushkin
- Saint Petersburg State University , 7/9 Universitetskaya Nab ., Saint Petersburg , 199034 , Russian Federation
| |
Collapse
|
46
|
Jaeger AD, Ehm C, Lentz D. Organocatalytic C−F Bond Activation with Alanes. Chemistry 2018; 24:6769-6777. [DOI: 10.1002/chem.201706061] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 02/13/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Alma D. Jaeger
- Freie Universität Berlin; Institut für Chemie und Biochemie, Anorganische Chemie; Fabeckstr. 34-36 14195 Berlin Germany
| | - Christian Ehm
- Università di Napoli Federico II; Dipartimento di Scienze Chimiche; Via Cintia 80126 Napoli Italy
| | - Dieter Lentz
- Freie Universität Berlin; Institut für Chemie und Biochemie, Anorganische Chemie; Fabeckstr. 34-36 14195 Berlin Germany
| |
Collapse
|
47
|
Teegardin KA, Weaver JD. Polyfluoroarylation of oxazolones: access to non-natural fluorinated amino acids. Chem Commun (Camb) 2018; 53:4771-4774. [PMID: 28357423 DOI: 10.1039/c7cc01606a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, conditions are provided for the formation and use of the oxazolone enolate for the nucleophilic substitution of highly fluorinated (hetero)arenes, which after unmasking yield highly fluorinated non-natural amino acids and derivatives. In addition, the properties and chemical behavior of this new class of amino acids are explored. The utility is demonstrated in the one pot synthesis of medicinally relevant 2-aminohydantoins.
Collapse
Affiliation(s)
- Kip A Teegardin
- Department of Chemistry, Oklahoma State University, Stillwater, OK 74078, USA.
| | | |
Collapse
|
48
|
Gao C, Chen S, Wang Y, Wang J, Zheng X, Zhu J, Song L, Zhang W, Xiong Y. Heterogeneous Single-Atom Catalyst for Visible-Light-Driven High-Turnover CO 2 Reduction: The Role of Electron Transfer. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1704624. [PMID: 29441620 DOI: 10.1002/adma.201704624] [Citation(s) in RCA: 202] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 11/16/2017] [Indexed: 06/08/2023]
Abstract
Visible-light-driven conversion of CO2 into chemical fuels is an intriguing approach to address the energy and environmental challenges. In principle, light harvesting and catalytic reactions can be both optimized by combining the merits of homogeneous and heterogeneous photocatalysts; however, the efficiency of charge transfer between light absorbers and catalytic sites is often too low to limit the overall photocatalytic performance. In this communication, it is reported that the single-atom Co sites coordinated on the partially oxidized graphene nanosheets can serve as a highly active and durable heterogeneous catalyst for CO2 conversion, wherein the graphene bridges homogeneous light absorbers with single-atom catalytic sites for the efficient transfer of photoexcited electrons. As a result, the turnover number for CO production reaches a high value of 678 with an unprecedented turnover frequency of 3.77 min-1 , superior to those obtained with the state-of-the-art heterogeneous photocatalysts. This work provides fresh insights into the design of catalytic sites toward photocatalytic CO2 conversion from the angle of single-atom catalysis and highlights the role of charge kinetics in bridging the gap between heterogeneous and homogeneous photocatalysts.
Collapse
Affiliation(s)
- Chao Gao
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Shuangming Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Ying Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Jiawen Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Xusheng Zheng
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Junfa Zhu
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Li Song
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Wenkai Zhang
- Department of Physics, Beijing Normal University, Beijing, 100875, P. R. China
| | - Yujie Xiong
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| |
Collapse
|
49
|
Nicholls TP, Robertson JC, Gardiner MG, Bissember AC. Identifying the potential of pulsed LED irradiation in synthesis: copper-photocatalysed C–F functionalisation. Chem Commun (Camb) 2018; 54:4589-4592. [DOI: 10.1039/c8cc02244e] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The results of a proof-of-concept study demonstrate for the first time that pulsed LED irradiation enhances the rate of product formation and the yield of a visible light-mediated photoredox-catalysed reaction.
Collapse
Affiliation(s)
- Thomas P. Nicholls
- School of Natural Sciences – Chemistry
- University of Tasmania
- Hobart
- Australia
| | | | | | - Alex C. Bissember
- School of Natural Sciences – Chemistry
- University of Tasmania
- Hobart
- Australia
| |
Collapse
|
50
|
Kikushima K, Grellier M, Ohashi M, Ogoshi S. Transition-Metal-Free Catalytic Hydrodefluorination of Polyfluoroarenes by Concerted Nucleophilic Aromatic Substitution with a Hydrosilicate. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Kotaro Kikushima
- Department of Applied Chemistry; Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
- Daikin Research Alliance Laboratories; Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| | - Mary Grellier
- Laboratoire de Chimie de Coordination (LCC); CNRS; 205 route de Narbonne 31077 Toulouse Cedex 4 France
- Université de Toulouse; UPS, INPT; 31077 Toulouse Cedex 4 France
| | - Masato Ohashi
- Department of Applied Chemistry; Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| | - Sensuke Ogoshi
- Department of Applied Chemistry; Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| |
Collapse
|