1
|
Valla L, Pitrat D, Mulatier JC, Le Bahers T, Jeanneau E, Ali LMA, Nguyen C, Gary-Bobo M, Andraud C, Bretonnière Y. Imidazo[1,2- a]pyridine and Imidazo[1,5- a]pyridine: Electron Donor Groups in the Design of D-π-A Dyes. J Org Chem 2024; 89:8407-8419. [PMID: 38853362 DOI: 10.1021/acs.joc.4c00232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
This work investigates the electron-donating capabilities of two 10-π electron nitrogen bridgehead bicyclic [5,6]-fused ring systems, imidazo[1,2-a]pyridine and imidazo[1,5-a]pyridine rings. Eight compounds with varying positions of electron-withdrawing moieties (TCF or DCI) coupled to the imidazopyridine ring were synthesized and studied. DCI-containing compounds (Ib-IVb) exhibited a purely dipolar nature with broad absorption bands, weak fluorescence, large Stokes shifts, and strong solvatochromism. In contrast, TCF-containing compounds (Ia-IVa) demonstrated diverse properties. Imidazo[1,2-a]pyridine derivatives Ia and IIa were purely dipolar, while imidazo[1,5-a]pyridine derivatives IIIa and IVa displayed a cyanine-like character with intense absorption and higher quantum yields of emission. The observed gradual red shift in optical properties with changing electron-donor groups (IIb < Ib < IIIb < IVb) and (IIa < Ia < IIIa < IVa) underscores the stronger electron-donor character of imidazo[1,5-a]pyridine compared to that of imidazo[1,2-a]pyridine. Furthermore, crystalline powders of imidazo[1,2-a]pyridine derivatives exhibited fluorescence despite minimal emission in solution. Two compounds (Ib and IVa) were successfully formulated into nanoparticles for potential in vivo imaging applications in zebrafish embryos.
Collapse
Affiliation(s)
- Léa Valla
- Laboratoire de Chimie de l'ENS de Lyon, Univ Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, 69342 Lyon, France
| | - Delphine Pitrat
- Laboratoire de Chimie de l'ENS de Lyon, Univ Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, 69342 Lyon, France
| | - Jean-Christophe Mulatier
- Laboratoire de Chimie de l'ENS de Lyon, Univ Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, 69342 Lyon, France
| | - Tangui Le Bahers
- Laboratoire de Chimie de l'ENS de Lyon, Univ Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, 69342 Lyon, France
- Institut Universitaire de France 5 Rue Descartes, Paris 75005, France
| | - Erwann Jeanneau
- Univ Lyon, Centre de Diffractométrie Henri Longchambon, Université Lyon I, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
| | - Lamiaa M A Ali
- IBMM, Univ Montpellier, CNRS, ENSCM, 1919 Route de Mende, 34293 Montpellier, France
| | - Christophe Nguyen
- IBMM, Univ Montpellier, CNRS, ENSCM, 1919 Route de Mende, 34293 Montpellier, France
| | - Magali Gary-Bobo
- IBMM, Univ Montpellier, CNRS, ENSCM, 1919 Route de Mende, 34293 Montpellier, France
| | - Chantal Andraud
- Laboratoire de Chimie de l'ENS de Lyon, Univ Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, 69342 Lyon, France
| | - Yann Bretonnière
- Laboratoire de Chimie de l'ENS de Lyon, Univ Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, 69342 Lyon, France
| |
Collapse
|
2
|
Ohashi M, Ando K, Murakami S, Michigami K, Ogoshi S. N-Heterocyclic Carbenes with Polyfluorinated Groups at the 4- and 5-Positions from [3 + 2] Cycloadditions between Formamidinates and cis-1,2-Difluoroalkene Derivatives. J Am Chem Soc 2023; 145:23098-23108. [PMID: 37749910 DOI: 10.1021/jacs.3c06331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
We herein report the formation of fluorinated N-heterocyclic carbenes (NHCFs) that bear fluorine atoms at the 4- and 5-positions of the imidazol-2-ylidene ring. Treatment of sodium N,N'-bis(aryl)formamidinates with tetrafluoroethylene followed by the addition of LiBF4 induced a [3 + 2] cycloaddition to afford 4,5-difluorinated imidazolium salts, which served as the precursors for 4,5-difluorinated NHCs. A key feature of this procedure is its applicability to other perfluorinated compounds, which enabled us to incorporate polyfluorinated functional groups at 4- and 5-positions on the imidazol-2-ylidene skeleton. Thus, employing octafluorocyclopentene and hexafluorobenzene led to the formation of 4,4,5,5,6,6-hexafluoro-1,3-diaryl-3,4,5,6-tetrahydrocyclopenta[d]imidazolium (CypIPrF·HBF4) and 4,5,6,7-tetrafluoro-1,3-diarylbenzimidazolium (BIPrF·HBF4) salts, respectively. A thorough NMR analysis of these NHCFs, their selenium adducts, and their tricarbonyl nickel complexes, (NHCF)Ni(CO)3, demonstrated that the fluorine substituents, contrary to expectations, tend to act as electron donors owing to the considerable positive mesomeric effect, while the perfluorocyclopentene-fused and tetrafluorobenzo-fused rings are pure electron acceptors due to their strong negative inductive effect. The unique and increased π-accepting character of the perfluorocyclopentene-fused and tetrafluorobenzo-fused NHCFs in both stoichiometric and catalytic reactions is further demonstrated by employing (NHCF)Ni(CO)3 and (NHCF)AuCl species, respectively. Moreover, an analysis of the % buried volume (%Vbur) values clearly suggests that the modification of the NHC backbone with polyfluorinated groups can drastically alter the electronic properties of the NHC ligand without substantially changing its steric properties. Our experimental results were further corroborated by a series of computational calculations.
Collapse
Affiliation(s)
- Masato Ohashi
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, Sakai 599-8531 Osaka, Japan
| | - Kota Ando
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita 565-0871 Osaka, Japan
| | - Shoichi Murakami
- Department of Chemistry, Faculty of Science, Osaka Prefecture University, Sakai 599-8531 Osaka, Japan
| | - Kenichi Michigami
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, Sakai 599-8531 Osaka, Japan
| | - Sensuke Ogoshi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita 565-0871 Osaka, Japan
| |
Collapse
|
3
|
Sonoda T, Kanamori M, Endo K, Miwa K, Kurumada S, Suzuki K, Yamashita M, Shibahara F. 5‐Sulfurated Imidazo[1,5‐
a
]Pyridin‐3‐ylidenes: Ligands for π‐Acidic Catalysts. Isr J Chem 2022. [DOI: 10.1002/ijch.202200038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Takuya Sonoda
- Takuya Sonoda Masaya Kanamori Koki Endo Fumitoshi Shibahara Department of Chemistry and Biomolecular Science Faculty of Engineering Gifu University Yanagido Gifu 501-1193 Japan
| | - Masaya Kanamori
- Takuya Sonoda Masaya Kanamori Koki Endo Fumitoshi Shibahara Department of Chemistry and Biomolecular Science Faculty of Engineering Gifu University Yanagido Gifu 501-1193 Japan
| | - Koki Endo
- Takuya Sonoda Masaya Kanamori Koki Endo Fumitoshi Shibahara Department of Chemistry and Biomolecular Science Faculty of Engineering Gifu University Yanagido Gifu 501-1193 Japan
| | - Kazuki Miwa
- Takuya Sonoda Masaya Kanamori Koki Endo Fumitoshi Shibahara Department of Chemistry and Biomolecular Science Faculty of Engineering Gifu University Yanagido Gifu 501-1193 Japan
| | - Satoshi Kurumada
- Satoshi Kurumada Katsunori Suzuki Makoto Yamashita Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8603 Aichi Japan
| | - Katsunori Suzuki
- Satoshi Kurumada Katsunori Suzuki Makoto Yamashita Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8603 Aichi Japan
| | - Makoto Yamashita
- Satoshi Kurumada Katsunori Suzuki Makoto Yamashita Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8603 Aichi Japan
| | - Fumitoshi Shibahara
- Takuya Sonoda Masaya Kanamori Koki Endo Fumitoshi Shibahara Department of Chemistry and Biomolecular Science Faculty of Engineering Gifu University Yanagido Gifu 501-1193 Japan
| |
Collapse
|
4
|
Teixeira P, Bastin S, César V. Fused Polycyclic NHC Ligands in Gold Catalysis: Recent Advances. Isr J Chem 2022. [DOI: 10.1002/ijch.202200051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Paul Teixeira
- LCC-CNRS Université de Toulouse, CNRS 205 route de Narbonne F-31077 Toulouse France
| | - Stéphanie Bastin
- LCC-CNRS Université de Toulouse, CNRS 205 route de Narbonne F-31077 Toulouse France
| | - Vincent César
- LCC-CNRS Université de Toulouse, CNRS 205 route de Narbonne F-31077 Toulouse France
| |
Collapse
|
5
|
Zheng DZ, Li DH, Liu H, Shao Y, Ke Z, Liu FS. Bis(imino)acenaphthene (BIAN)-Supported N-Heterocyclic Carbene Palladium Complexes with Ancillary Ligands: Readily Activated Precatalysts for Direct C–H Arylation of Thiophenes. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Di-Zhong Zheng
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
| | - Dong-Hui Li
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
| | - Huan Liu
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
| | - Youxiang Shao
- School of Materials Science &Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou 510006, China
| | - Zhuofeng Ke
- School of Materials Science &Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou 510006, China
| | - Feng-Shou Liu
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
| |
Collapse
|
6
|
Angoy M, Jiménez MV, Lahoz FJ, Vispe E, Pérez-Torrente JJ. Polymerization of phenylacetylene catalyzed by rhodium(I) complexes with N-functionalized N-heterocyclic carbene ligands. Polym Chem 2022. [DOI: 10.1039/d1py01650d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of neutral [RhX(nbd)(κC-MeIm∩Z)] and cationic [Rh(nbd)(κ2C,N-MeIm∩Z)]+ (X = Cl, Br; MeIm = 3-methylimidazol-2-yliden-1-yl; ∩Z = N-functionalized wingtip; nbd = 2,5-norbornadiene) complexes featuring NHC ligands functionalized with a 1-aminopropyl,...
Collapse
|
7
|
Shibahara F, Shibata Y, Murai T. Imidazo[1,5- a]pyridinylidenes as π-Accepting NHC Ligands in Catalysis. CHEM LETT 2021. [DOI: 10.1246/cl.210461] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fumitoshi Shibahara
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Yoshifuru Shibata
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Toshiaki Murai
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| |
Collapse
|
8
|
Voloshkin VA, Tzouras NV, Nolan SP. Recent advances in the synthesis and derivatization of N-heterocyclic carbene metal complexes. Dalton Trans 2021; 50:12058-12068. [PMID: 34519733 DOI: 10.1039/d1dt01847g] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
N-heterocyclic carbene (NHC) metal complexes have gained an incredible amount of attention in the course of the last two decades and have become indispensable as an intricate part of a plethora of applications. The areas of their synthesis and derivatization are constantly evolving and bring new, more sustainable, cost-effective and simpler approaches to the design of existing and next generation catalysts and materials. This article provides an overview of the latest developments, focusing on those which have appeared during the last two years.
Collapse
Affiliation(s)
- Vladislav A Voloshkin
- Department of Chemistry and Center for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S-3), 9000 Ghent, Belgium.
| | - Nikolaos V Tzouras
- Department of Chemistry and Center for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S-3), 9000 Ghent, Belgium.
| | - Steven P Nolan
- Department of Chemistry and Center for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S-3), 9000 Ghent, Belgium.
| |
Collapse
|
9
|
Kuriyama S, Zhao W, Nishibayashi Y. Synthesis and Characterization of Rhodium Complex Bearing Anionic CNC‐Type Pincer Ligand with Pyrrolide and Imidazo[1,5‐
a
]pyridin‐3‐ylidene Moieties. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202100065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Shogo Kuriyama
- Department of Applied Chemistry School of Engineering The University of Tokyo, Hongo Bunkyo-ku Tokyo 113-8656 Japan
| | - Wenhao Zhao
- Department of Applied Chemistry School of Engineering The University of Tokyo, Hongo Bunkyo-ku Tokyo 113-8656 Japan
| | - Yoshiaki Nishibayashi
- Department of Applied Chemistry School of Engineering The University of Tokyo, Hongo Bunkyo-ku Tokyo 113-8656 Japan
| |
Collapse
|
10
|
Praveen C, Dupeux A, Michelet V. Catalytic Gold Chemistry: From Simple Salts to Complexes for Regioselective C-H Bond Functionalization. Chemistry 2021; 27:10495-10532. [PMID: 33904614 DOI: 10.1002/chem.202100785] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Indexed: 11/07/2022]
Abstract
Gold coordinated to neutral phosphines (R3 P), N-heterocyclic carbenes (NHCs) or anionic ligands is catalytically active in functionalizing various C-H bonds with high selectivity. The sterics/electronic nature of the studied C-H bond, oxidation state of gold and stereoelectronic capacity of the coordinated auxiliary ligand are some of the associated selectivity factors in gold-catalyzed C-H bond functionalization reactions. Hence, in this review a comprehensive update about the action of different types of gold catalysts, from simple to sophisticated ones, on C-H bond reactions and their regiochemical outcome is disclosed. This review also highlights the catalytic applications of Au(I)- and Au(III)-species in creating new opportunities for the regio- and site-selective activation of challenging C-H bonds. Finally, it also intends to stress the potential applications in selective C-H bond activation associated with a variety of heterocycles recently described in the literature.
Collapse
Affiliation(s)
- Chandrasekar Praveen
- Electrochemical Power Sources Division, Central Electrochemcial Research Institute (CSIR Laboratory) Alagappapuram, Karaikudi, 630003, Sivagangai District, Tamil Nadu, India
| | - Aurélien Dupeux
- Institut de Chimie de Nice, UMR 7272 CNRS, University Côte d'Azur Valrose Park, Faculty of Sciences, 06108, Nice Cedex 2, France
| | - Véronique Michelet
- Institut de Chimie de Nice, UMR 7272 CNRS, University Côte d'Azur Valrose Park, Faculty of Sciences, 06108, Nice Cedex 2, France
| |
Collapse
|
11
|
Twycross D, Davey CJ, Cole ML, McKay AI. Stereoelectronic Characterization and Catalytic Potential of a 1,3‐Bis(2,6‐terphenyl)‐Substituted N‐Heterocyclic Carbene. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100148] [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)
- Daniel Twycross
- School of Chemistry University of New South Wales Kensington NSW, 2052 Australia
| | - Christopher J. Davey
- School of Chemistry University of New South Wales Kensington NSW, 2052 Australia
| | - Marcus L. Cole
- School of Chemistry University of New South Wales Kensington NSW, 2052 Australia
| | - Alasdair I. McKay
- School of Chemistry University of New South Wales Kensington NSW, 2052 Australia
- School of Chemistry Monash University Clayton VIC 3080 Australia
| |
Collapse
|
12
|
|
13
|
Bonfiglio A, Mauro M. Phosphorescent
Tris
‐Bidentate Ir
III
Complexes with N‐Heterocyclic Carbene Scaffolds: Structural Diversity and Optical Properties. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000509] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Anna Bonfiglio
- Institut de Physique et Chimie des Matériaux de Strasbourg, UMR7504 Université de Strasbourg & CNRS 23 rue du Loess 67000 Strasbourg France
| | - Matteo Mauro
- Institut de Physique et Chimie des Matériaux de Strasbourg, UMR7504 Université de Strasbourg & CNRS 23 rue du Loess 67000 Strasbourg France
| |
Collapse
|
14
|
Morgante P, Captain B, Chouinard CD, Peverati R, Takenaka N. Synthesis of electrophilic N-heterocyclic carbenes based on azahelicene. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152143] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
15
|
NGUYEN VANHA, DINH THIHONGNGOC, DANG THANHTUAN. Platinum(II), palladium(II) and gold(I) benzimidazolin-2-ylidene as potential probes for determination of N-heterocyclic carbene donor strengths and steric bulks by DFT calculations. J CHEM SCI 2020. [DOI: 10.1007/s12039-020-01785-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
16
|
Hölzel T, Ganter C. Influence of ring substituents on the electronic properties of 1,2,4-triazolylidenes. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
17
|
Reactivity of nickel metal precursors towards amido linked N-heterocyclic carbenes and their catalytic studies for cross coupling reactions. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119446] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
18
|
Park DA, Byun S, Ryu JY, Lee J, Lee J, Hong S. Abnormal N-Heterocyclic Carbene–Palladium Complexes for the Copolymerization of Ethylene and Polar Monomers. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00802] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Da-Ae Park
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Seunghwan Byun
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Ji Yeon Ryu
- Department of Chemistry, Chonnam National University, 77 Yongbong-ro,
Buk-gu, Gwangju 61186, Republic of Korea
| | - Jinyoung Lee
- Catalyst R&D, LG Chem Research Park, 188 Munji-ro, Yuseong-gu, Daejeon 34122, Republic of Korea
| | - Junseong Lee
- Department of Chemistry, Chonnam National University, 77 Yongbong-ro,
Buk-gu, Gwangju 61186, Republic of Korea
| | - Sukwon Hong
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
| |
Collapse
|
19
|
Yagishita F, Nagamori T, Shimokawa S, Hoshi K, Yoshida Y, Imada Y, Kawamura Y. Visible-light-induced oxidative coupling reaction of benzylic amines using iridium(III) complex of pincer type imidazo[1,5-a]pyridine ligand. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151782] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
20
|
Shibahara F, Mizuno T, Shibata Y, Murai T. Transfer Semihydrogenation of Alkynes Catalyzed by Imidazo[1,5- a]pyrid-3-ylidene–Pd Complexes: Positive Effects of Electronic and Steric Features on N-Heterocyclic Carbene Ligands. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20190333] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Fumitoshi Shibahara
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Takahiro Mizuno
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Yoshifuru Shibata
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Toshiaki Murai
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| |
Collapse
|
21
|
Saab M, Nelson DJ, Tzouras NV, A. C. A. Bayrakdar T, Nolan SP, Nahra F, Van Hecke K. Straightforward access to chalcogenoureas derived from N-heterocyclic carbenes and their coordination chemistry. Dalton Trans 2020; 49:12068-12081. [PMID: 32820302 DOI: 10.1039/d0dt02558e] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we describe a straightforward access to chalcogenoureas derived from N-heterocyclic carbenes, and we investigate the coordination chemistry of selenoureas with coinage metals.
Collapse
Affiliation(s)
- Marina Saab
- Department of Chemistry
- Ghent University
- 9000 Ghent
- Belgium
| | - David J. Nelson
- WestCHEM Department of Pure & Applied Chemistry
- University of Strathclyde
- Glasgow
- UK
| | | | | | | | - Fady Nahra
- Department of Chemistry
- Ghent University
- 9000 Ghent
- Belgium
- VITO (Flemish Institute for Technological Research)
| | | |
Collapse
|
22
|
Byun S, Seo H, Choi JH, Ryu JY, Lee J, Chung WJ, Hong S. Fluoro-imidazopyridinylidene Ruthenium Catalysts for Cross Metathesis with Ethylene. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00469] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Seunghwan Byun
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
- Grubbs Center for Polymers and Catalysis, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Huiyeong Seo
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Jun-Ho Choi
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Ji Yeon Ryu
- Department of Chemistry, Chonnam National University, 77 Yongbong-ro,
Buk-gu, Gwangju 61186, Republic of Korea
| | - Junseong Lee
- Department of Chemistry, Chonnam National University, 77 Yongbong-ro,
Buk-gu, Gwangju 61186, Republic of Korea
| | - Won-jin Chung
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Sukwon Hong
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
- Grubbs Center for Polymers and Catalysis, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| |
Collapse
|
23
|
Zhu J, Lindsay VNG. Benzimidazolyl Palladium Complexes as Highly Active and General Bifunctional Catalysts in Sustainable Cross-Coupling Reactions. ACS Catal 2019. [DOI: 10.1021/acscatal.9b02420] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jiancheng Zhu
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
| | - Vincent N. G. Lindsay
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
| |
Collapse
|
24
|
Schleicher D, Tronnier A, Soellner J, Strassner T. Cyclometalated Ruthenium(II) NHC Complexes with Imidazo[1,5‐
a
]pyridine‐Based (C
^
C*) Ligands – Synthesis and Characterization. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900108] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- David Schleicher
- Physikalische Organische Chemie Technische Universität Dresden 01069 Dresden Germany
| | - Alexander Tronnier
- Physikalische Organische Chemie Technische Universität Dresden 01069 Dresden Germany
| | - Johannes Soellner
- Physikalische Organische Chemie Technische Universität Dresden 01069 Dresden Germany
| | - Thomas Strassner
- Physikalische Organische Chemie Technische Universität Dresden 01069 Dresden Germany
| |
Collapse
|
25
|
Lee YY, Zseng HW, Tsai ZH, Su YS, Hu CH, Lee HM. Isomeric Palladium Complexes Bearing Imidazopyridine-Based Abnormal Carbene Ligands: Synthesis, Characterization, and Catalytic Activity in Direct C–H Arylation Reaction. Organometallics 2019. [DOI: 10.1021/acs.organomet.8b00806] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yan-Yi Lee
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50058
| | - Han-Wei Zseng
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50058
| | - Zong-Han Tsai
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50058
| | - Yong-Siang Su
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50058
| | - Ching-Han Hu
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50058
| | - Hon Man Lee
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50058
| |
Collapse
|
26
|
Kashihara M, Zhong RL, Semba K, Sakaki S, Nakao Y. Pd/NHC-catalyzed cross-coupling reactions of nitroarenes. Chem Commun (Camb) 2019; 55:9291-9294. [DOI: 10.1039/c9cc05055h] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
N-Heterocyclic carbene (NHC) ligands effective for the cross-coupling of nitroarenes were identified.
Collapse
Affiliation(s)
- Myuto Kashihara
- Department of Material Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Rong-Lin Zhong
- Fukui Institute for Fundamental Chemistry
- Kyoto University
- Japan
| | - Kazuhiko Semba
- Department of Material Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | | | - Yoshiaki Nakao
- Department of Material Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| |
Collapse
|
27
|
Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2017. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.08.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
28
|
Yagishita F, Kinouchi T, Hoshi K, Tezuka Y, Jibu Y, Karatsu T, Uemura N, Yoshida Y, Mino T, Sakamoto M, Kawamura Y. Highly efficient blue emission from boron complexes of 1-(o-hydroxyphenyl)imidazo[1,5-a]pyridine. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.05.048] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
29
|
Yagishita F, Nii C, Tezuka Y, Tabata A, Nagamune H, Uemura N, Yoshida Y, Mino T, Sakamoto M, Kawamura Y. Fluorescent N-Heteroarenes Having Large Stokes Shift and Water Solubility Suitable for Bioimaging. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800250] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Fumitoshi Yagishita
- Department of Applied Chemistry; Graduate School of Science and Technology; Tokushima University; Tokushima 770-8506 Japan
| | - Chiho Nii
- Department of Applied Chemistry; Graduate School of Science and Technology; Tokushima University; Tokushima 770-8506 Japan
| | - Yoshihiko Tezuka
- Department of Optical Science and Technology; Graduate School of Science and Technology; Tokushima University; Tokushima 770-8506 Japan
| | - Atsushi Tabata
- Faculty of Bioscience and Bioindustry; Tokushima University; Tokushima 770-8506 Japan
| | - Hideaki Nagamune
- Faculty of Bioscience and Bioindustry; Tokushima University; Tokushima 770-8506 Japan
| | - Naohiro Uemura
- Graduate School of Engineering; Chiba University; Chiba 263-8522 Japan
| | - Yasushi Yoshida
- Graduate School of Engineering; Chiba University; Chiba 263-8522 Japan
| | - Takashi Mino
- Graduate School of Engineering; Chiba University; Chiba 263-8522 Japan
| | - Masami Sakamoto
- Graduate School of Engineering; Chiba University; Chiba 263-8522 Japan
| | - Yasuhiko Kawamura
- Department of Applied Chemistry; Graduate School of Science and Technology; Tokushima University; Tokushima 770-8506 Japan
| |
Collapse
|
30
|
Huynh HV. Electronic Properties of N-Heterocyclic Carbenes and Their Experimental Determination. Chem Rev 2018; 118:9457-9492. [DOI: 10.1021/acs.chemrev.8b00067] [Citation(s) in RCA: 446] [Impact Index Per Article: 74.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Han Vinh Huynh
- Department of Chemistry, Faculty of Science, National University of Singapore, 3 Science Drive 3, Singapore 117543, Republic of Singapore
| |
Collapse
|
31
|
Iglesias-Sigüenza J, Izquierdo C, Díez E, Fernández R, Lassaletta JM. N-Heterotricyclic cationic carbene ligands. Synthesis, reactivity and coordination chemistry. Dalton Trans 2018. [PMID: 29528072 DOI: 10.1039/c8dt00213d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal complexes based on cationic N-heterotricyclic carbenes have been synthesized and the impact of charge delocalization on their electronic properties has been analysed.
Collapse
Affiliation(s)
- Javier Iglesias-Sigüenza
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- 41012 Sevilla
- Spain
| | - Cristina Izquierdo
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- 41012 Sevilla
- Spain
| | - Elena Díez
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- 41012 Sevilla
- Spain
| | - Rosario Fernández
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- 41012 Sevilla
- Spain
| | - José M. Lassaletta
- Instituto Investigaciones Químicas (CSIC-USe) and Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- 41092 Sevilla
- Spain
| |
Collapse
|
32
|
Hu Z, Hou J, Liu J, Yu W, Chang J. Synthesis of imidazo[1,5-a]pyridines via I2-mediated sp3 C–H amination. Org Biomol Chem 2018; 16:5653-5660. [DOI: 10.1039/c8ob01501e] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A transition-metal-free sp3 C–H amination reaction has been developed employing molecular iodine for imidazo[1,5-a]pyridine synthesis.
Collapse
Affiliation(s)
- Zhiyuan Hu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Jiao Hou
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Jie Liu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Wenquan Yu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Junbiao Chang
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| |
Collapse
|
33
|
Hölzel T, Otto M, Buhl H, Ganter C. An Extremely Electron Poor Cationic Triazoliumylidene N-Heterocyclic Carbene: Experimental and Computational Studies. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00670] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Torsten Hölzel
- Institut für Anorganische
Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße
1, D-40225 Düsseldorf, Germany
| | - Maximilian Otto
- Institut für Anorganische
Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße
1, D-40225 Düsseldorf, Germany
| | - Hannes Buhl
- Institut für Anorganische
Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße
1, D-40225 Düsseldorf, Germany
| | - Christian Ganter
- Institut für Anorganische
Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße
1, D-40225 Düsseldorf, Germany
| |
Collapse
|
34
|
Freese T, Lücke AL, Schmidt CA, Polamo M, Nieger M, Namyslo JC, Schmidt A. Anionic N-heterocyclic carbenes derived from sydnone imines such as molsidomine. Trapping reactions with selenium, palladium, and gold. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.07.032] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
35
|
Coinage Metal Complexes of the Carbenic Tautomer of a Conjugated Mesomeric Betaine Akin to Nitron. Molecules 2017; 22:molecules22071133. [PMID: 28686202 PMCID: PMC6152182 DOI: 10.3390/molecules22071133] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 07/06/2017] [Accepted: 07/06/2017] [Indexed: 01/25/2023] Open
Abstract
This study was motivated by our recent observation that the analytical reagent Nitron (2) is an “instant carbene”, whose reaction with coinage metal salts MX afforded complexes of its carbenic tautomer 1,4-diphenyl-3-phenylamino-1,2,4-triazol-5-ylidene (2′). Our aim was to establish an alkyl homologue of 2 in order to achieve a carbenic tautomer of higher donicity. For this purpose 1-tert-butyl-4-methyl-1,2,4-triazol-4-ium-3-tert-butylaminide (6) was synthesized. Its reactions with MX afforded complexes of the carbenic tautomer 1-tert-butyl-3-tert-butylamino-4-methyl-1,2,4-triazol-5-ylidene (6′). With a stoichiometric ratio of 1:1 complexes of the type [MX(6′)] were obtained. A ratio of 2:1 furnished complexes of the type [MX(6′)2] or [M(6′)2]X. 6′ is a better σ-donor and less electrophilic than 2′ according to NMR spectroscopic data of 6H[BF4] and 6′ = Se, respectively, and IR spectroscopic data of [RhCl(6′)(CO)2] confirm that its net electron donor capacity is superior to that of 2′. A comparison of the complexes of 2′ and 6′ reveals two pronounced structural differences. [CuX(6′)2] (X = Cl, Br) exhibit more acute C–Cu–C bond angles than [CuX(2′)2]. In contrast to [CuCl(2′)], [CuCl(6′)] aggregates through Cu···Cu contacts of ca. 2.87 Å, compatible with cuprophilic interactions. These differences may be explained by the complementary steric requirements of the t-Bu and the Me substituent of 6′.
Collapse
|
36
|
Park DA, Ryu JY, Lee J, Hong S. Bifunctional N-heterocyclic carbene ligands for Cu-catalyzed direct C–H carboxylation with CO2. RSC Adv 2017. [DOI: 10.1039/c7ra11414a] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
A copper-catalyzed direct C–H carboxylation of heteroarene compounds using diethylene glycol-functionalized imidazo[1,5,a] pyridin-3-ylidene (DEG-ImPy) ligands has been developed.
Collapse
Affiliation(s)
- Da-Ae Park
- Department of Chemistry
- Gwangju Institute of Science and Technology
- Gwangju 61005
- Republic of Korea
| | - Ji Yeon Ryu
- Department of Chemistry
- Chonnam National University
- Gwangju 61186
- Republic of Korea
| | - Junseong Lee
- Department of Chemistry
- Chonnam National University
- Gwangju 61186
- Republic of Korea
| | - Sukwon Hong
- Department of Chemistry
- Gwangju Institute of Science and Technology
- Gwangju 61005
- Republic of Korea
- School of Materials Science and Engineering
| |
Collapse
|