1
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Font P, Valdés H, Ribas X. Consolidation of the Oxidant-Free Au(I)/Au(III) Catalysis Enabled by the Hemilabile Ligand Strategy. Angew Chem Int Ed Engl 2024; 63:e202405824. [PMID: 38687322 DOI: 10.1002/anie.202405824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 04/29/2024] [Accepted: 04/30/2024] [Indexed: 05/02/2024]
Abstract
In this minireview we survey the challenges and strategies in gold redox catalysis. Gold's reluctance to oxidative addition reactions due to its high redox potential limits its applicability. Initial attempts to overcome this problem focused on the use of sacrificial external oxidants in stoichiometric amounts to bring Au(I) compounds to Au(III) reactive species. Recently, innovative approaches focused on employing hemilabile ligands, which are capable of coordinating to Au(I) and stabilizing square-planar Au(III) intermediates, thus facilitating oxidative addition steps and enabling oxidant-free catalysis. Notable examples include the use of the (P^N) bidendate MeDalphos ligand to achieve various cross-coupling reactions via oxidative addition Au(I)/Au(III). Importantly, hemilabile ligand-enabled catalysis allows merging oxidative addition with π-activation, such as oxy- and aminoarylation of alkenols and alkenamines using organohalides, expanding gold's versatility in C-C and C-heteroatom bond formations and unprecedented cyclizations. Moreover, recent advancements in enantioselective catalysis using chiral hemilabile (P^N) ligands are also surveyed. Strikingly, versatile bidentate (C^N) hemilabile ligands as competitors of MeDalphos have appeared recently, by designing scaffolds where phosphine groups are substituted by N-heterocyclic or mesoionic carbenes. Overall, these approaches highlight the evolving landscape of gold redox catalysis and its tremendous potential in a broad scope of transformations.
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Affiliation(s)
- Pau Font
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, Girona, E-17003, Catalonia, Spain
| | - Hugo Valdés
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, Girona, E-17003, Catalonia, Spain
- Current address: Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, 28805, Alcalá de Henares, Madrid, Spain
| | - Xavi Ribas
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, Girona, E-17003, Catalonia, Spain
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2
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Paroi B, Pegu C, Mane MV, Patil NT. Gold-Catalyzed Arylative Cope Rearrangement. Angew Chem Int Ed Engl 2024:e202406936. [PMID: 38769939 DOI: 10.1002/anie.202406936] [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: 04/11/2024] [Revised: 05/14/2024] [Accepted: 05/20/2024] [Indexed: 05/22/2024]
Abstract
Cope rearrangements have garnered significant attention owing to their ability to undergo structural reorganization in stereoselective manner. While substantial advances have been achieved over decades, these rearrangements remained applicable exclusively to parent 1,5-hexadienes. Herein, we disclose the gold-catalyzed arylative Cope rearrangement of 1,6-heptadienes via a cyclization-induced [3,3]-rearrangement employing ligand-enabled gold redox catalysis. Detailed mechanistic investigations including several control experiments, cross-over experiment, HRMS analysis, 31P NMR and DFT studies have been performed to underpin the mechanism.
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Affiliation(s)
- Bidisha Paroi
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal-, 462 066, India
| | - Chayanika Pegu
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal-, 462 066, India
| | - Manoj V Mane
- Centre for Nano and Material Science, Jain (Deemed-to-be University), Jain Global Campus Kanakapura, Bangalore, Karnataka-, 562112, India
| | - Nitin T Patil
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal-, 462 066, India
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3
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Bone KI, Puleo TR, Bandar JS. Direct C-H Hydroxylation of N-Heteroarenes and Benzenes via Base-Catalyzed Halogen Transfer. J Am Chem Soc 2024; 146:9755-9767. [PMID: 38530788 PMCID: PMC11006572 DOI: 10.1021/jacs.3c14058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
Hydroxylated (hetero)arenes are valued in many industries as both key constituents of end products and diversifiable synthetic building blocks. Accordingly, the development of reactions that complement and address the limitations of existing methods for the introduction of aromatic hydroxyl groups is an important goal. To this end, we apply base-catalyzed halogen transfer (X-transfer) to enable the direct C-H hydroxylation of mildly acidic N-heteroarenes and benzenes. This protocol employs an alkoxide base to catalyze X-transfer from sacrificial 2-halothiophene oxidants to aryl substrates, forming SNAr-active intermediates that undergo nucleophilic hydroxylation. Key to this process is the use of 2-phenylethanol as an inexpensive hydroxide surrogate that, after aromatic substitution and rapid elimination, provides the hydroxylated arene and styrene byproduct. Use of simple 2-halothiophenes allows for C-H hydroxylation of 6-membered N-heteroarenes and 1,3-azole derivatives, while a rationally designed 2-halobenzothiophene oxidant extends the scope to electron-deficient benzene substrates. Mechanistic studies indicate that aromatic X-transfer is reversible, suggesting that the deprotonation, halogenation, and substitution steps operate in synergy, manifesting in unique selectivity trends that are not necessarily dependent on the most acidic aryl position. The utility of this method is further demonstrated through streamlined target molecule syntheses, examples of regioselectivity that contrast alternative C-H hydroxylation methods, and the scalable recycling of the thiophene oxidants.
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Affiliation(s)
- Kendelyn I. Bone
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Thomas R. Puleo
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Jeffrey S. Bandar
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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4
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Parmar SV, Avasare V. Syn-Aminoauration versus Anti-Aminoauration of Alkynes in Au(I)/Au(III) Catalysis: Understanding the Origin of Selectivity. J Org Chem 2024; 89:2951-2963. [PMID: 38332617 DOI: 10.1021/acs.joc.3c02356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
There is no experimental evidence of whether such gold-catalyzed aminoauration reactions follow the anti- and/or syn-pathway, and hence, to understand the origin of the selectivity in Au(I)- and Au(III)-catalyzed reactions of alkynes, a thorough mechanistic study was performed using DFT methods. The NBO and ASM analyses provided significant information about the structure-stability-reactivity of the pathway-determining states (PDS). This study further reveals that the oxidation states and geometries of gold, the steric bulk, and the dihedral angles of the PDS direct the mechanistic pathways and control the turnover frequency.
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Affiliation(s)
| | - Vidya Avasare
- Department of Chemistry, Ashoka University, Sonipat, Haryana 131029, India
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5
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Muratov K, Zaripov E, Berezovski MV, Gagosz F. DFT-Enabled Development of Hemilabile (P ∧N) Ligands for Gold(I/III) RedOx Catalysis: Application to the Thiotosylation of Aryl Iodides. J Am Chem Soc 2024; 146:3660-3674. [PMID: 38315643 DOI: 10.1021/jacs.3c08943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Ligand-enabled oxidative addition of Csp2-X bonds to Au(I) centers has recently appeared as a valuable strategy for the development of catalytic RedOx processes. Several cross-coupling reactions that were previously considered difficult to achieve were reported lately, thus expanding the synthetic potential of gold(I) complexes beyond the traditional nucleophilic functionalization of π-systems. MeDalPhos has played an important role in this development and, despite several studies on alternative structures, remains, so far, the only general ligand for such process. We report herein the discovery and DFT-enabled structural optimization of a new family of hemilabile (P∧N) ligands that can promote the oxidative addition of aryl iodides to gold(I). These flexible ligands, which possess a common 2-methylamino heteroaromatic N-donor motif, are structurally and electronically tunable, beyond being easily accessible and affordable. The corresponding Au(I) complexes were shown to outperform the reactivity of (MeDalPhos)Au(I) in a series of alkoxy- and amidoarylations of alkenes. Their synthetic potential and comparatively higher reactivity were further highlighted in the thiotosylation of aryl iodides, a challenging unreported C-S cross-coupling reaction that could not be achieved under classical Pd(0/II) catalysis and that allows for general and divergent access to aryl sulfur derivatives.
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Affiliation(s)
- Karim Muratov
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa K1N 6N5, Canada
| | - Emil Zaripov
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa K1N 6N5, Canada
| | - Maxim V Berezovski
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa K1N 6N5, Canada
| | - Fabien Gagosz
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa K1N 6N5, Canada
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6
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Zhang S, Wei J, Ye X, Perez A, Shi X. Accessing gold p-acid reactivity under electrochemical anode oxidation (EAO) through oxidation relay. Nat Commun 2023; 14:8265. [PMID: 38092735 PMCID: PMC10719393 DOI: 10.1038/s41467-023-44025-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 11/28/2023] [Indexed: 12/17/2023] Open
Abstract
The gold π-acid activation under electrochemical conditions is achieved. While EAO allows easy access to gold(III) intermediates over alternative chemical oxidation under mild conditions, the reported examples so far are limited to coupling reactions due to the rapid AuIII reductive elimination. Using aryl hydrazine-HOTf salt as precursors, the π-activation reaction mode was realized through oxidation relay. Both alkene and alkyne di-functionalization were achieved with excellent functional group compatibility and regioselectivity, which extended the versatility and utility of electrochemical gold redox chemistry for future applications.
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Affiliation(s)
- Shuyao Zhang
- Department of Chemistry, University of South Florida, Tampa, FL, USA
| | - Jingwen Wei
- Department of Chemistry, University of South Florida, Tampa, FL, USA
| | - Xiaohan Ye
- Department of Chemistry, University of South Florida, Tampa, FL, USA
| | - Angel Perez
- Department of Chemistry, University of South Florida, Tampa, FL, USA
| | - Xiaodong Shi
- Department of Chemistry, University of South Florida, Tampa, FL, USA.
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7
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Urvashi, Mishra S, Patil NT. Gold-catalyzed alkenylation and arylation of phosphorothioates. Chem Sci 2023; 14:13134-13139. [PMID: 38023501 PMCID: PMC10664589 DOI: 10.1039/d3sc04888h] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 10/28/2023] [Indexed: 12/01/2023] Open
Abstract
Reported herein is the ligand-enabled gold-catalyzed alkenylation and arylation of phosphorothioates using alkenyl and aryl iodides. Mechanistic studies revealed a crucial role of the in situ generated Ag-sulfur complex, which undergoes a facile transmetalation with the Au(iii) intermediate, thereby leading to the successful realization of the present reaction. Moreover, for the first time, the alkenylation of phosphoroselenoates under gold redox catalysis has been presented.
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Affiliation(s)
- Urvashi
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal Bhopal Bypass Road, Bhauri Bhopal - 462 066 India
| | - Sampoorna Mishra
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal Bhopal Bypass Road, Bhauri Bhopal - 462 066 India
| | - Nitin T Patil
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal Bhopal Bypass Road, Bhauri Bhopal - 462 066 India
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8
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Shi X, Zhang S, Wei J, Ye X, Perez A. Accessing Gold π-Acid Reactivity under Electrochemical Anode Oxidation (EAO) through Oxidation Relay. RESEARCH SQUARE 2023:rs.3.rs-3088453. [PMID: 37461542 PMCID: PMC10350213 DOI: 10.21203/rs.3.rs-3088453/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/24/2023]
Abstract
The gold π-acid activation under electrochemical condition is achieved for the first time. While EAO allowing easy access to gold(III) intermediates over alternative chemical oxidation under mild conditions, the reported examples so far limited to coupling reactions due to the rapid AuIII reductive elimination. Using aryl hydrazine-HOTf salt as precursors, the π-activation reaction mode was realized through oxidation relay. Both alkene and alkyne di-functionalization were achieved with excellent functional group compatibility and regioselectivity, which extended the versatility and utility of electrochemical gold redox chemistry for future applications to come.
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9
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Bavi M, Nabavizadeh SM, Hosseini FN, Hoseini SJ, Friedel JN, Klein A. Cross-Coupling versus Homo-Coupling at a Pt(IV) Center: Computational and Experimental Approaches. Organometallics 2023. [DOI: 10.1021/acs.organomet.3c00050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Affiliation(s)
- Marzieh Bavi
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran
| | - S. Masoud Nabavizadeh
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran
| | | | - S. Jafar Hoseini
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran
| | - Joshua Nicolas Friedel
- Faculty of Mathematics and Natural Sciences, Department of Chemistry, Institute for Inorganic Chemistry, University of Cologne, Greinstrasse 6, 50939 Köln, Germany
| | - Axel Klein
- Faculty of Mathematics and Natural Sciences, Department of Chemistry, Institute for Inorganic Chemistry, University of Cologne, Greinstrasse 6, 50939 Köln, Germany
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10
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Gao P, Xu J, Zhou T, Liu Y, Bisz E, Dziuk B, Lalancette R, Szostak R, Zhang D, Szostak M. L-Shaped Heterobidentate Imidazo[1,5-a]pyridin-3-ylidene (N,C)-Ligands for Oxidant-Free Au I /Au III Catalysis. Angew Chem Int Ed Engl 2023; 62:e202218427. [PMID: 36696514 PMCID: PMC9992098 DOI: 10.1002/anie.202218427] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/18/2023] [Accepted: 01/25/2023] [Indexed: 01/26/2023]
Abstract
In the last decade, major advances have been made in homogeneous gold catalysis. However, AuI /AuIII catalytic cycle remains much less explored due to the reluctance of AuI to undergo oxidative addition and the stability of the AuIII intermediate. Herein, we report activation of aryl halides at gold(I) enabled by NHC (NHC=N-heterocyclic carbene) ligands through the development of a new class of L-shaped heterobidentate ImPy (ImPy=imidazo[1,5-a]pyridin-3-ylidene) N,C ligands that feature hemilabile character of the amino group in combination with strong σ-donation of the carbene center in a rigid conformation, imposed by the ligand architecture. Detailed characterization and control studies reveal key ligand features for AuI /AuIII redox cycle, wherein the hemilabile nitrogen is placed at the coordinating position of a rigid framework. Given the tremendous significance of homogeneous gold catalysis, we anticipate that this ligand platform will find widespread application.
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Affiliation(s)
- Pengcheng Gao
- Department of Chemistry, Rutgers University, 73 Warren Street, 07102, Newark, NJ, USA
| | - Jihong Xu
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, Institute of Theoretical Chemistry, School of Chemistry and Chemical Engineering, Shandong University, 250100, Jinan, China
| | - Tongliang Zhou
- Department of Chemistry, Rutgers University, 73 Warren Street, 07102, Newark, NJ, USA
| | - Yanhong Liu
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, Institute of Theoretical Chemistry, School of Chemistry and Chemical Engineering, Shandong University, 250100, Jinan, China
| | - Elwira Bisz
- Department of Chemistry, Opole University, 48 Oleska Street, 45-052, Opole, Poland
| | - Błażej Dziuk
- Department of Chemistry, University of Science and Technology, Norwida 4/6, 50-373, Wroclaw, Poland
| | - Roger Lalancette
- Department of Chemistry, Rutgers University, 73 Warren Street, 07102, Newark, NJ, USA
| | - Roman Szostak
- Department of Chemistry, Wroclaw University, F. Joliot-Curie 14, 50-383, Wroclaw, Poland
| | - Dongju Zhang
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, Institute of Theoretical Chemistry, School of Chemistry and Chemical Engineering, Shandong University, 250100, Jinan, China
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, 07102, Newark, NJ, USA
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11
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Das A, Patil NT. Ligand-Enabled Gold-Catalyzed C(sp 2)–O Cross-Coupling Reactions. ACS Catal 2023. [DOI: 10.1021/acscatal.3c00338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Affiliation(s)
- Avishek Das
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Nitin T. Patil
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
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12
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McCallum T. Heart of gold: enabling ligands for oxidative addition of haloorganics in Au(I)/Au(III) catalysed cross-coupling reactions. Org Biomol Chem 2023; 21:1629-1646. [PMID: 36727215 DOI: 10.1039/d3ob00002h] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The field of Au-catalysis has been an area rich with new discoveries due to the unique properties of the lustrous element. In the past decade, developments in Au(I)/Au(III) cross-coupling methodology have been made possible with the use of external oxidants that facilitate the challenging oxidation of Au(I) to Au(III) in a stable and catalytically competent fashion. Until recently, Au-chemistry was not known to undergo catalytic transformations that feature oxidative addition of haloarenes like those that were made famous by transition metals such as Pd and Ni. The discovery that ligand modification could facilitate the oxidative addition of Au(I) with haloorganics to provide Au(III) intermediates that are competent in other areas of catalysis (i.e. Lewis acid catalysis) has revolutionized this field and has led to the invention of new cross-coupling methodology. The recent advances at the leading edge in the emerging field of Au(I)/Au(III) catalysis under redox-neutral conditions are highlighted.
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Affiliation(s)
- Terry McCallum
- The Canadian Bank Note Company, Ottawa, Ontario, Canada.
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13
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Yao W, Lv K, Xie Z, Qiu H, Ma M. Catalyst-Free Electrochemical Sulfonylation of Organoboronic Acids. J Org Chem 2023; 88:2296-2305. [PMID: 36727513 DOI: 10.1021/acs.joc.2c02690] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A simple and efficient electrochemical sulfonylation of organoboronic acids with sodium arylsulfinate salts has been reported for the first time. A variety of aryl, heteroaryl, and alkenylsulfones were obtained in good to excellent yields via a simple electrochemical sulfonylation of various arylboronic acids, heterocyclic boronic acids, or alkenylboronic acids with sodium arylsulfinate at room temperature in 5 h under the catalyst-free and additive-free conditions. A plausible mechanism has been proposed based on various radical-trapping and CV control experiments.
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Affiliation(s)
- Weiwei Yao
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Kang Lv
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Zixi Xie
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Hui Qiu
- Department of Chemistry and Material Science, College of Science, Nanjing Forestry University, Nanjing 210037, China
| | - Mengtao Ma
- Department of Chemistry and Material Science, College of Science, Nanjing Forestry University, Nanjing 210037, China
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14
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Lv Y, Lai J, Pu W, Wang J, Han W, Wang A, Zhang M, Wang X. Metal-Free Highly Regioselective 1,4-Sulfonyliodination of 1,3-Enynes. J Org Chem 2023; 88:2034-2045. [PMID: 36749192 DOI: 10.1021/acs.joc.2c02257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Herein, a novel, practical, and green synthetic method using readily available 1,3-enynes with sulfonyl hydrazides and I2 through tert-butyl hydroperoxide (TBHP)-mediated 1,4-sulfonyliodination has been developed for synthesizing various tetrasubstituted allenyl iodides under metal-free conditions. Notably, the proposed method exhibits a broad substrate scope, operational simplicity, tolerance to air, high functional-group tolerance, satisfactory yields, and excellent regioselectivity as well as involves the use of cost-effective reagents such as green oxidants.
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Affiliation(s)
- Yunhe Lv
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, P. R. China
| | - Junrong Lai
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, P. R. China
| | - Weiya Pu
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, P. R. China
| | - Jin Wang
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, P. R. China
| | - Wanru Han
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, P. R. China
| | - Axue Wang
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, P. R. China
| | - Mengyue Zhang
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, P. R. China
| | - Xue Wang
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, P. R. China
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15
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Tathe AG, Saswade SS, Patil NT. Gold-catalyzed multicomponent reactions. Org Chem Front 2023. [DOI: 10.1039/d3qo00272a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
Multicomponent reactions (MCRs) have emerged as an important branch in organic synthesis for the creation of complex molecular structures. This review is focused on gold-catalyzed MCRs with a special emphasis on the recent developments.
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16
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Pei M, Luo X, Tang Q, Huang N, Wang L. The application research on Cu-Al@SBA-15 bimetallic synergistic effect in the C-X bond sequential assembly. CATAL COMMUN 2022. [DOI: 10.1016/j.catcom.2022.106548] [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] Open
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17
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Yavari I, Shaabanzadeh S. Benzylic C(sp 3)-H Bonds Play the Dual Role of Starting Material and Oxidation Inhibitor for Hydrazides in the Electrochemical Synthesis of Hydrazones. J Org Chem 2022; 87:15077-15085. [PMID: 36347012 DOI: 10.1021/acs.joc.2c01574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The electrooxidation of benzylic C(sp3)-H bonds to produce hydrazones as an alternate for conventional pathways has an enormous dignity. Under the aegis of electricity, instead of hazardous metal catalysts and external oxidants, we unveil an electrochemical process for electrooxidation of various benzylic C(sp3)-H bonds in aqueous media in all pH ranges that subsequently produce hydrazones with further reactions. This electrooxidative reaction strategy provides an acceptable condition for synthesizing hydrazones with various functional groups in good efficiency and amenable to gram-scale synthesis. The electrochemical oxidation condition proves an excellent level of compatibility with super cheap electrolyte NaCl for the oxidation of benzylic C(sp3)-H position despite the highly oxidizable hydrazide group remaining intact in the reaction.
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Affiliation(s)
- Issa Yavari
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran 1463694571, Iran
| | - Sina Shaabanzadeh
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran 1463694571, Iran
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18
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Rigoulet M, Miqueu K, Bourissou D. Mechanistic Insights about the Ligand-Enabled Oxy-arylation/vinylation of Alkenes via Au(I)/Au(III) Catalysis. Chemistry 2022; 28:e202202110. [PMID: 35876716 PMCID: PMC9805180 DOI: 10.1002/chem.202202110] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Indexed: 01/09/2023]
Abstract
The mechanism of oxy-arylation/vinylation of alkenes catalyzed by the (MeDalphos)AuCl complex was comprehensively investigated by DFT. (P,N)Au(Ph)2+ and (P,N)Au(vinyl)2+ are key intermediates accounting for the activation of the alkenols and for their cyclization by outer-sphere nucleophilic attack of oxygen. The 5-exo and 6-endo paths have been computed and compared, reproducing the peculiar regioselectivity difference observed experimentally between 4-penten-1-ol, (E) and (Z)-4-hexen-1-ols. Examining the way the alkenol coordinates to gold (more η2 or η1 ) can offer, in some cases, a simple way to predict the favored path of cyclization.
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Affiliation(s)
- Mathilde Rigoulet
- CNRS/Université Paul SabatierUPS Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA UMR 5069)118 route de Narbonne31062ToulouseFrance
| | - Karinne Miqueu
- CNRS/Université de Pau et des Pays de l'AdourE2S-UPPAInstitut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM UMR 5254)Hélioparc, 2 Avenue du Président Angot64053Pau Cedex 09France
| | - Didier Bourissou
- CNRS/Université Paul SabatierUPS Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA UMR 5069)118 route de Narbonne31062ToulouseFrance
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Mandal D, Kumar A, Patil NT. Gold catalysis in organic synthesis: fifteen years of research in India. PROCEEDINGS OF THE INDIAN NATIONAL SCIENCE ACADEMY 2022. [DOI: 10.1007/s43538-022-00106-0] [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]
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20
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Mishra S, Urvashi, Patil NT. Chiral Ligands for Au(I), Au(III), and Au(I)/Au(III) Redox Catalysis. Isr J Chem 2022. [DOI: 10.1002/ijch.202200039] [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)
- Sampoorna Mishra
- Sampoorna Mishra Urvashi and Nitin T. Patil Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhauri Bhopal 462 066 India
| | - Urvashi
- Sampoorna Mishra Urvashi and Nitin T. Patil Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhauri Bhopal 462 066 India
| | - Nitin T. Patil
- Sampoorna Mishra Urvashi and Nitin T. Patil Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhauri Bhopal 462 066 India
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