1
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Pérez-Sánchez JC, Herrera RP, Gimeno MC. The Potential of Self-Activating Au(I) Complexes in Gold Catalysis. Chemistry 2024:e202401825. [PMID: 38818661 DOI: 10.1002/chem.202401825] [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: 05/09/2024] [Revised: 05/28/2024] [Accepted: 05/28/2024] [Indexed: 06/01/2024]
Abstract
Gold catalysis has emerged as a groundbreaking field in synthetic chemistry, revolutionizing numerous organic transformations. Despite the significant achieved advancements, the mechanistic understanding behind many gold-catalyzed reactions remains elusive. This Concept article covers the so-called "self-activating" Au(I) complexes, sorting out their pivotal role in gold catalysis. We comment on how Au(I) complexes can undergo self-activation, triggering diverse catalytic transformations without the need for external additives. The most important examples reported so far that underlie the catalytic activity of these species are discussed. This intrinsic reactivity represents a paradigm shift in gold catalysis, offering new avenues for the design of efficient and sustainable catalytic systems. Furthermore, we explore the factors influencing the stability, reactivity, and selectivity of these Au(I) complexes, providing insights into their synthetic utility and potential applications. This area of research not only advances our fundamental understanding of gold catalysis but also paves the way for the development of novel catalytic strategies with broad implications in organic synthesis and the chemical industry.
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Affiliation(s)
- Juan Carlos Pérez-Sánchez
- Department of Inorganic Chemistry, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, Zaragoza, 50009, Spain
- Department of Organic Chemistry, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, Zaragoza, 50009, Spain
| | - Raquel P Herrera
- Department of Organic Chemistry, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, Zaragoza, 50009, Spain
| | - M Concepción Gimeno
- Department of Inorganic Chemistry, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, Zaragoza, 50009, Spain
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2
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Pérez-Sánchez JC, Herrera RP, Concepción Gimeno M. Ferrocenyl Dinuclear Gold(I) Complexes. Study of their Structural Features and the Influence of Bridging and Phosphane Ligands in a Catalytic Cyclization Reaction. Chemistry 2024; 30:e202303585. [PMID: 38051039 DOI: 10.1002/chem.202303585] [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: 10/29/2023] [Revised: 12/01/2023] [Accepted: 12/05/2023] [Indexed: 12/07/2023]
Abstract
The combination of the ferrocene moiety with gold(I) catalysis remains a relatively unexplored field. In this article, we delve into the synthesis, characterization, and potential catalytic activity of four complexes utilizing both monodentate and bidentate ferrocenyl diphenylphosphane ligands (ppf and dppf), coordinated with two gold(I) metal centers, linked by either chloride or pentafluorophenylthiolate bridging ligands. This leads to the formation of cationic "self-activated" precatalysts capable of initiating the catalytic cycle without the need for external additives. The catalytic activity of these complexes was assessed through a model reaction in gold(I) catalysis, specifically the cyclization of a N-propargylbenzamide to produce an oxazole. In addition, we studied and compared the influence exerted by both the phosphane and the bridging ligand on the performance of these catalysts.
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Affiliation(s)
- Juan Carlos Pérez-Sánchez
- Department of Inorganic Chemistry, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009, Zaragoza, Spain
- Department of Organic Chemistry, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Raquel P Herrera
- Department of Organic Chemistry, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - M Concepción Gimeno
- Department of Inorganic Chemistry, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009, Zaragoza, Spain
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3
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Zhou B, Bedajna S, Gabbaï FP. Pnictogen bonding at the service of gold catalysis: the case of a phosphinostiborane gold complex. Chem Commun (Camb) 2023; 60:192-195. [PMID: 38047406 DOI: 10.1039/d3cc04942f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
The search for alternative gold catalyst activators has led us to consider the design of platforms in which a phosphine gold chloride moiety could be activated via formation of a pnictogen bond with a neighboring antimony unit. Here, we describe that such a system can be accessed from 4-(diphenylphosphino)-5-(diphenylstibino)-2,7-di-tert-butyl-9,9-dimethylxanthene, by oxidation of the stibine with 3,5-di-tert-butyl-o-benzoquinone and by coordination of an AuCl unit to the phosphine. This strategy affords a complex in which a Lewis acidic or pnictogen-bond donor catecholatostiborane unit flanks the adjacent gold chloride moiety. This design impacts the catalytic reactivity of the gold center, as reflected by the ability of this complex to catalyze propargyl amide cyclization reactions. Comparisons with a phosphinostiborane ferrocene analog and computations point to the formation of an intramolecular Au-Cl → Sb(V) interaction as responsible for the observed catalytic activity.
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Affiliation(s)
- Benyu Zhou
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
| | - Shantabh Bedajna
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
| | - François P Gabbaï
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
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4
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Li Y, Sun Y, Zhao C, Zeng Y. Activation of metal-involved halogen bonds and classical halogen bonds in gold(I) catalysis. Dalton Trans 2023; 52:4517-4525. [PMID: 36920245 DOI: 10.1039/d3dt00158j] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
In gold(I) catalysis, the activation of Au(I) chloride catalysts via chloride abstraction and noncovalent interactions has become a research focus in organometallic catalysis. In this work, taking halogen bond donors (C4H2INO2, C6F5I, C8H9O2I) as activators for a Au(I) chloride catalyst (Ph3PAuCl), the mechanism of the cyclization reaction of propargylic amide was investigated. It was found that there are two activation modes as design principles to obtain the catalytically active species Ph3PAu+: the halogen bond donors activate the Cl atoms of Ph3PAuCl to form X-I⋯Cl (X = C, N) classical halogen bonds and activate the Au atoms of Ph3PAuCl to form X-I⋯Au (X = C, N) metal-involved halogen bonds. For the two activation modes, the mechanism of the cyclization reaction of propargylic amide has pathways: the chloride abstraction process of the first step and the 5-exo/6-endo cyclization process of the second step. Both activation modes show good activity for the cyclization reaction with the activation ability of classical halogen bonds being slightly stronger than that of the metal-involved halogen bonds, which is consistent with the strength of the X-I⋯Cl halogen bonds being slightly stronger than that of the X-I⋯Au halogen bonds. Therefore, both metal-involved halogen bonds and classical halogen bonds have important development prospects for the activation of catalysts in gold(I) catalysis.
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Affiliation(s)
- Ying Li
- College of Chemistry and Materials Science, Hebei Key Laboratory of Inorganic Nano-materials, Hebei Normal University, Shijiazhuang, 050024, China.
| | - Yuanyuan Sun
- College of Chemistry and Materials Science, Hebei Key Laboratory of Inorganic Nano-materials, Hebei Normal University, Shijiazhuang, 050024, China.
| | - Chang Zhao
- College of Chemistry and Materials Science, Hebei Key Laboratory of Inorganic Nano-materials, Hebei Normal University, Shijiazhuang, 050024, China.
| | - Yanli Zeng
- College of Chemistry and Materials Science, Hebei Key Laboratory of Inorganic Nano-materials, Hebei Normal University, Shijiazhuang, 050024, China.
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5
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Elías-Rodríguez P, Matador E, Benítez M, Tejero T, Díez E, Fernández R, Merino P, Monge D, Lassaletta JM. Silver-Free Gold-Catalyzed Heterocyclizations through Intermolecular H-Bonding Activation. J Org Chem 2023; 88:2487-2492. [PMID: 36704838 PMCID: PMC9942198 DOI: 10.1021/acs.joc.2c02932] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Modulable monosulfonyl squaramides have been shown to exert activation of gold(I) chloride complexes through H-bonding in an intermolecular way. Combinations of (PPh3)AuCl or IPrAuCl complexes and an optimal sulfonyl squaramide cocatalyst bearing two 3,5-bis(trifluoromethyl)phenyl groups efficiently catalyzed diverse heterocyclizations and a cyclopropanation reaction, avoiding in all cases undesired side reactions. Computational studies indicate that the Au-Cl bond breaks by transligation to the triple bond in a ternary complex formed by the actual AuCl···HBD catalyst and the substrate.
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Affiliation(s)
- Pilar Elías-Rodríguez
- Facultad
de Química. Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación
en Química Avanzada (ORFEO−CINQA), C/Prof. García González,
1, 41012 Sevilla, Spain
| | - Esteban Matador
- Facultad
de Química. Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación
en Química Avanzada (ORFEO−CINQA), C/Prof. García González,
1, 41012 Sevilla, Spain
| | - Manuel Benítez
- Facultad
de Química. Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación
en Química Avanzada (ORFEO−CINQA), C/Prof. García González,
1, 41012 Sevilla, Spain
| | - Tomás Tejero
- Instituto
de Síntesis Química y Catálisis Homogénea
(ISQCH), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Elena Díez
- Facultad
de Química. Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación
en Química Avanzada (ORFEO−CINQA), C/Prof. García González,
1, 41012 Sevilla, Spain
| | - Rosario Fernández
- Facultad
de Química. Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación
en Química Avanzada (ORFEO−CINQA), C/Prof. García González,
1, 41012 Sevilla, Spain,E-mail:
| | - Pedro Merino
- Instituto
de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza, 50009 Zaragoza, Spain,E-mail:
| | - David Monge
- Facultad
de Química. Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación
en Química Avanzada (ORFEO−CINQA), C/Prof. García González,
1, 41012 Sevilla, Spain,E-mail:
| | - José M. Lassaletta
- Instituto
de Investigaciones Químicas (CSIC-US) and Centro de Innovación
en Química Avanzada (ORFEO−CINQA), Avda. Américo Vespucio, 49, 41092 Sevilla, Spain,E-mail:
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6
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Ali HS, Hussein AA, Obies M. Impact of counteranions on N-heterocyclic carbene gold(i)-catalyzed cyclization of propargylic amide. RSC Adv 2023; 13:2896-2902. [PMID: 36756396 PMCID: PMC9850360 DOI: 10.1039/d2ra06210k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 01/05/2023] [Indexed: 01/21/2023] Open
Abstract
N-Heterocyclic carbene (NHC) Au(i)-catalyzed organic synthesis has recently been receiving increasing attention, especially with the activation of alkynes. In contrast, counteranions, being widely problematic in Au(i)-catalyzed transformations, are commonly considered as innocent partners and are not respectably included in a computational model. Herein, we report density functional theory (DFT) investigations of the Au(i)-catalyzed cyclization of propargylic amides to exploit the mechanistic effect of several counteranions to shed some light for further future developments. Among the counteranions used in this study, NTf2 -, ClO4 -, TsO-, TFA-, TfO-, MsO-, and SbF6 -, both the cyclization and protodeauration step favor the 5-exo-dig product over the 6-endo-dig product when the alkyne moiety is terminated with hydrogen. These anions reveal a crucial influence on the energy profile through lowering the barriers of the reaction. Mechanistically, the results obtained from all counteranions show that the protodeauration is slower than the cyclization. By using an energetic span model, the results clearly indicate that the rate-determining state is the protodeauration step for all counteranions, and thus protodeauration is the turnover-limiting step. The turnover frequency (TOF) results for the formation of the 5-exo-dig product show cyclization reactivity in the order of MsO- > TFA- > ClO4 - > NTf2 - > TfO- > TsO- ≫ SbF6 -, whereas an order of TFA- > MsO- > NTf2 - > TfO- ≈ ClO4 - > SbF6 - ⋙ TsO- is calculated for the protodeauration, suggesting that SbF6 - and TsO- are disfavored due to their slow protodeauration. In this regard, and for the 6-endo-dig pathway, our conclusions demonstrate an order of TfO- > TFA- > MsO- > NTf2 - > ClO4 - > TsO- ⋙ SbF6 - for the cyclization and TFA- > TsO- > MsO- > TfO- > NTf2 - > ClO4 - ⋙ SbF6 - for the protodeauration, advocating that the anions SbF6 -, NTf2 - and ClO4 - are unlikely partners for the 6-endo-dig pathway because of their slow protodeauration. Finally, the findings here advise that any engineering of the counteranion to increase the efficiency of catalytic system would be more effective on the protodeauration step rather than the cyclization step.
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Affiliation(s)
- Hafiz Saqib Ali
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford12 Mansfield RoadOxford OX1 3TAUK
| | - Aqeel A. Hussein
- Department of Medical Laboratory Science, College of Science, Komar University of Science and TechnologySulaymaniyah 46001Kurdistan RegionIraq
| | - Mohammed Obies
- College of Pharmacy, University of Babylon51002HillahBabylonIraq
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7
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Liu WC, Gabbaï FP. Placing gold on a π +-surface: ligand design and impact on reactivity. Chem Sci 2023; 14:277-283. [PMID: 36687358 PMCID: PMC9811580 DOI: 10.1039/d2sc05574k] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 11/21/2022] [Indexed: 11/24/2022] Open
Abstract
We describe a novel gold chloride complex supported by an ambiphilic phosphine/xanthylium ligand in which the AuCl moiety interacts with the π+ surface of the xanthylium unit as indicated by structural studies. Energy decomposition analyses carried out on a model system indicates the prevalence of non-covalent interactions in which the electrostatic and dispersion terms cumulatively dominate. The presence of these AuCl-π+ interactions correlates with the high catalytic activity of this complex in the cyclisation of 2-(phenylethynyl)phenylboronic acid, N-propargyl-t-butylamide, and 2-allyl-2-(2-propynyl)malonate. Comparison with the significantly less active acridinium and the 9-oxa-10-boraanthracene analogues reinforces this conclusion.
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Affiliation(s)
- Wei-Chun Liu
- Department of Chemistry, Texas A&M UniversityCollege StationTX 77843USA
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8
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Amide-functionalized organic cationic polymers toward enhanced catalytic performance for conversion of CO2 into cyclic carbonates. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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9
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Hern M, Foley R, Bacsa J, Wallen CM. Binding polyprotic small molecules with second-sphere hydrogen bonds. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2119850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Morgan Hern
- Department of Chemistry and Fermentation Sciences, Appalachian State University, Boone, NC, USA
| | - Rebecca Foley
- Department of Chemistry and Fermentation Sciences, Appalachian State University, Boone, NC, USA
| | - John Bacsa
- Department of Chemistry, Emory University, Atlanta, GA, USA
| | - Christian M. Wallen
- Department of Chemistry and Fermentation Sciences, Appalachian State University, Boone, NC, USA
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10
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Tzouras NV, Gobbo A, Pozsoni NB, Chalkidis SG, Bhandary S, Van Hecke K, Vougioukalakis GC, Nolan SP. Hydrogen bonding-enabled gold catalysis: ligand effects in gold-catalyzed cycloisomerizations in hexafluoroisopropanol (HFIP). Chem Commun (Camb) 2022; 58:8516-8519. [PMID: 35801509 DOI: 10.1039/d2cc03056j] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Gold catalysis has witnessed immense evolution in recent years, yet it still requires the use of activators to render the common [AuCl(L)] complexes catalytically active. Herein, the H-bonding donor properties of hexafluoroisopropanol (HFIP) are utilized for Au-Cl bond activation and the ancillary ligand and counteranion effects on cycloisomerization reactions are showcased in HFIP as solvent.
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Affiliation(s)
- Nikolaos V Tzouras
- Department of Chemistry and Centre of Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium. .,Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771, Athens, Greece.
| | - Alberto Gobbo
- Department of Chemistry and Centre of Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium.
| | - Nestor Bracho Pozsoni
- Department of Chemistry and Centre of Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium.
| | - Savvas G Chalkidis
- Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771, Athens, Greece.
| | - Subhrajyoti Bhandary
- Department of Chemistry and Centre of Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium.
| | - Kristof Van Hecke
- Department of Chemistry and Centre of Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium.
| | - Georgios C Vougioukalakis
- Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771, Athens, Greece.
| | - Steven P Nolan
- Department of Chemistry and Centre of Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium.
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11
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Ma Y, Ali HS, Hussein AA. A mechanistic study on the gold(i)-catalyzed cyclization of propargylic amide: revealing the impact of expanded-ring N-heterocyclic carbenes. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01617b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Density functional theory (DFT) was applied to understand the mechanistic pathway of the gold(i)-catalyzed cyclization of propargylic amide, and to reveal the impact of expanded-ring N-heterocyclic carbenes.
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Affiliation(s)
- Yumiao Ma
- BSJ Institute, Haidian, Beijing, 100084, People's Republic of China
- Hangzhou Yanqu Information Technology Co., Ltd., Xixi Legu Creative Pioneering Park, No. 712 Wen'er West Road, Xihu District, Hangzhou City, Zhejiang Province, 310003, People's Republic of China
| | - Hafiz Saqib Ali
- School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Rd, Kings Buildings, EH9 3FJ Edinburgh, UK
| | - Aqeel A. Hussein
- Department of Pharmacy, College of Medicine, Komar University of Science and Technology, Sulaymaniyah, Kurdistan Region, Iraq
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12
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Martinez T, Vanitcha A, Troufflard C, Vanthuyne N, Forté J, Gontard G, Lemière G, Mouriès‐Mansuy V, Fensterbank L. Indolizy Carbene Ligand. Evaluation of Electronic Properties and Applications in Asymmetric Gold(I) Catalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Thibaut Martinez
- Institut Parisien de Chimie Moléculaire Sorbonne Université CNRS 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Avassaya Vanitcha
- Institut Parisien de Chimie Moléculaire Sorbonne Université CNRS 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Claire Troufflard
- Institut Parisien de Chimie Moléculaire Sorbonne Université CNRS 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Nicolas Vanthuyne
- Aix Marseille Univ CNRS Centrale Marseille, iSm2 13397 Marseille Cedex 20 France
| | - Jérémy Forté
- Institut Parisien de Chimie Moléculaire Sorbonne Université CNRS 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Geoffrey Gontard
- Institut Parisien de Chimie Moléculaire Sorbonne Université CNRS 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Gilles Lemière
- Institut Parisien de Chimie Moléculaire Sorbonne Université CNRS 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Virginie Mouriès‐Mansuy
- Institut Parisien de Chimie Moléculaire Sorbonne Université CNRS 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Louis Fensterbank
- Institut Parisien de Chimie Moléculaire Sorbonne Université CNRS 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
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13
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Martinez T, Vanitcha A, Troufflard C, Vanthuyne N, Forté J, Gontard G, Lemière G, Mouriès-Mansuy V, Fensterbank L. Indolizy Carbene Ligand. Evaluation of Electronic Properties and Applications in Asymmetric Gold(I) Catalysis. Angew Chem Int Ed Engl 2021; 60:19879-19888. [PMID: 34243222 DOI: 10.1002/anie.202106142] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/21/2021] [Indexed: 11/05/2022]
Abstract
We report herein a new family of carbene ligands based on an indolizine-ylidene (Indolizy) moiety. The corresponding gold(I) complexes are easily obtained from the gold(I)-promoted cyclization of allenylpyridine precursors. Evaluation of the electronic properties by experimental methods and also by DFT calculations confirms strong σ-donating and π-accepting properties of these ligands. Cationization of the gold(I) complexes generates catalytic species that trigger diverse reactions of (poly)unsaturated precursors. When armed with a methylene phosphine oxide moiety on the stereogenic center adjacent to the nitrogen atom, the corresponding bifunctional carbene ligands give rise to highly enantioselective heterocyclizations. DFT calculations brought some rationalization and highlighted the critical roles played by the phosphine oxide group and the tosylate anion in the asymmetric cyclization of γ-allenols.
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Affiliation(s)
- Thibaut Martinez
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, 75252, Paris Cedex 05, France
| | - Avassaya Vanitcha
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, 75252, Paris Cedex 05, France
| | - Claire Troufflard
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, 75252, Paris Cedex 05, France
| | - Nicolas Vanthuyne
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, 13397, Marseille Cedex 20, France
| | - Jérémy Forté
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, 75252, Paris Cedex 05, France
| | - Geoffrey Gontard
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, 75252, Paris Cedex 05, France
| | - Gilles Lemière
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, 75252, Paris Cedex 05, France
| | - Virginie Mouriès-Mansuy
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, 75252, Paris Cedex 05, France
| | - Louis Fensterbank
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, 75252, Paris Cedex 05, France
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14
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McCarthy S, Lee Wei Jie A, Braddock DC, Serpe A, Wilton-Ely JDET. From Waste to Green Applications: The Use of Recovered Gold and Palladium in Catalysis. Molecules 2021; 26:5217. [PMID: 34500651 PMCID: PMC8434531 DOI: 10.3390/molecules26175217] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 08/19/2021] [Accepted: 08/26/2021] [Indexed: 11/16/2022] Open
Abstract
The direct use in catalysis of precious metal recovery products from industrial and consumer waste is a very promising recent area of investigation. It represents a more sustainable, environmentally benign, and profitable way of managing the low abundance of precious metals, as well as encouraging new ways of exploiting their catalytic properties. This review demonstrates the feasibility and sustainability of this innovative approach, inspired by circular economy models, and aims to stimulate further research and industrial processes based on the valorisation of secondary resources of these raw materials. The overview of the use of recovered gold and palladium in catalytic processes will be complemented by critical appraisal of the recovery and reuse approaches that have been proposed.
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Affiliation(s)
- Sean McCarthy
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, UK;
| | - Alvin Lee Wei Jie
- Department of Civil and Environmental Engineering and Architecture, INSTM Unit, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy;
| | - D. Christopher Braddock
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, UK;
| | - Angela Serpe
- Department of Civil and Environmental Engineering and Architecture, INSTM Unit, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy;
| | - James D. E. T. Wilton-Ely
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, UK;
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15
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Franchino A, Martí À, Nejrotti S, Echavarren AM. Silver-Free Au(I) Catalysis Enabled by Bifunctional Urea- and Squaramide-Phosphine Ligands via H-Bonding. Chemistry 2021; 27:11989-11996. [PMID: 34018646 PMCID: PMC8457243 DOI: 10.1002/chem.202101751] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Indexed: 12/14/2022]
Abstract
A library of gold(I) chloride complexes with phosphine ligands incorporating pendant (thio)urea and squaramide H-bond donors was prepared with the aim of promoting chloride abstraction from Au(I) via H-bonding. In the absence of silver additives, complexes bearing squaramides and trifluoromethylated aromatic ureas displayed good catalytic activity in the cyclization of N-propargyl benzamides, as well as in a 1,6-enyne cycloisomerization, a tandem cyclization-indole addition reaction and the hydrohydrazination of phenylacetylene. Kinetic studies and DFT calculations indicate that the energetic span of the reaction is accounted by both the chloride abstraction step, facilitated by the bidentate H-bond donor via an associative mechanism, and the subsequent cyclization step.
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Affiliation(s)
- Allegra Franchino
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and TechnologyAv. Països Catalans 1643007TarragonaSpain
- Departament de Química Analítica i Química OrgànicaUniversitat Rovira i VirgiliC/ Marcel⋅lí Domingo s/n43007TarragonaSpain
| | - Àlex Martí
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and TechnologyAv. Països Catalans 1643007TarragonaSpain
- Departament de Química Analítica i Química OrgànicaUniversitat Rovira i VirgiliC/ Marcel⋅lí Domingo s/n43007TarragonaSpain
| | - Stefano Nejrotti
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and TechnologyAv. Països Catalans 1643007TarragonaSpain
- Departament de Química Analítica i Química OrgànicaUniversitat Rovira i VirgiliC/ Marcel⋅lí Domingo s/n43007TarragonaSpain
| | - Antonio M. Echavarren
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and TechnologyAv. Països Catalans 1643007TarragonaSpain
- Departament de Química Analítica i Química OrgànicaUniversitat Rovira i VirgiliC/ Marcel⋅lí Domingo s/n43007TarragonaSpain
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16
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Franchino A, Montesinos-Magraner M, Echavarren AM. Silver-Free Catalysis with Gold(I) Chloride Complexes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200358] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Allegra Franchino
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Marc Montesinos-Magraner
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Antonio M. Echavarren
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, C/Marcel·lí Domingo s/n, 43007 Tarragona, Spain
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