1
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Synergistic Pd/Cu catalysis enabled cross-coupling of glycosyl stannanes with sulfonium salts to access C-aryl/alkenyl glycals. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.108021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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2
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Cauwenbergh R, Goyal V, Maiti R, Natte K, Das S. Challenges and recent advancements in the transformation of CO 2 into carboxylic acids: straightforward assembly with homogeneous 3d metals. Chem Soc Rev 2022; 51:9371-9423. [DOI: 10.1039/d1cs00921d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transformation of carbon dioxide (CO2) into valuable organic carboxylic acids is essential for maintaining sustainability. In this review, such CO2 thermo-, photo- and electrochemical transformations under 3d-transition metal catalysis are described from 2017 until 2022.
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Affiliation(s)
- Robin Cauwenbergh
- Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium
| | - Vishakha Goyal
- Chemical and Material Sciences Division, CSIR-Indian Institute of Petroleum, Dehradun-248005, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Joggers Road, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh 201 002, India
| | - Rakesh Maiti
- Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium
| | - Kishore Natte
- Department of Chemistry, Indian Institute of Technology, Hyderabad, Kandi, Sangareddy, 502 285, Telangana, India
| | - Shoubhik Das
- Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium
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3
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Shinozuka T. Investigation of the Selectivity of the Palladium-Catalyzed Aroylation and Arylation of Stannyl Glycals with Aroyl Chlorides. ACS OMEGA 2021; 6:8447-8455. [PMID: 33817505 PMCID: PMC8015111 DOI: 10.1021/acsomega.1c00218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 03/10/2021] [Indexed: 06/12/2023]
Abstract
The selectivity of the palladium-catalyzed aroylation and arylation of 1-tributylstannyl glycals with aroyl chlorides was investigated. The selectivity was controlled by the palladium catalyst, and high selectivity was achieved via ligand modification of the palladium catalyst. The reaction catalyzed by Pd(OAc)2 provided aroyl C-glycals with high selectivity, whereas the reaction catalyzed by Pd(PPh3)4 produced aryl C-glycals with diminished selectivity. The scope and limitation of the selectivity in this reaction are discussed.
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Affiliation(s)
- Tsuyoshi Shinozuka
- R&D Planning & Management Department,
R&D Division, Daiichi Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
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4
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Ghosh AK, Born JR, Veitschegger AM, Jurica MS. Copper-Catalyzed Stille Cross-Coupling Reaction and Application in the Synthesis of the Spliceostatin Core Structure. J Org Chem 2020; 85:8111-8120. [PMID: 32515594 DOI: 10.1021/acs.joc.0c00976] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
An efficient palladium-free Stille cross-coupling reaction of allylic bromides and functionalized organostannylfuran using catalytic copper halide has been developed. The coupling reaction was optimized using CuI and low catalyst loading (down to 5 mol %). The reaction was conveniently carried out at ambient temperature in the presence of inorganic base to afford the coupling product in good-to-excellent yields. The utility of this reaction was demonstrated in the synthesis of a furan with sensitive functionalities. A sulfolene moiety was utilized as a masking group for the sensitive diene. Noyori asymmetric reduction, Achmatowicz reaction, and Kishi reduction steps converted sulfolene to a highly substituted tetrahydropyran intermediate used in the synthesis of the highly potent antitumor agents, spliceostatins, and their derivatives.
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Affiliation(s)
- Arun K Ghosh
- Department of Chemistry and Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Joshua R Born
- Department of Chemistry and Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Anne M Veitschegger
- Department of Chemistry and Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Melissa S Jurica
- Department of Molecular Cell and Developmental Biology and Center for Molecular Biology of RNA, University of California, Santa Cruz, Santa Cruz, California 95064, United States
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5
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Duffy IR, Vasdev N, Dahl K. Copper(I)-Mediated 11C-Carboxylation of (Hetero)arylstannanes. ACS OMEGA 2020; 5:8242-8250. [PMID: 32309734 PMCID: PMC7161067 DOI: 10.1021/acsomega.0c00524] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 03/20/2020] [Indexed: 06/11/2023]
Abstract
A novel copper-mediated carboxylation strategy of aryl- and heteroaryl-stannanes is described. The method serves as a mild (i.e., 1 atm) carboxylation method using stable carbon dioxide and is transferable as a radiosynthetic approach for carbon-11-labeled aromatic and heteroaromatic carboxylic acids using sub-stoichiometric quantities of [11C]CO2. The methodology was applied to the radiosynthesis of the retinoid X receptor agonist, [11C]bexarotene, with a decay-corrected radiochemical yield of 32 ± 5% and molar activity of 38 ± 23 GBq/μmol (n = 3).
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Affiliation(s)
- Ian R. Duffy
- Azrieli
Centre for Neuro-Radiochemistry, Brain Health Imaging Centre, Centre for Addiction and Mental Health, 250 College Street, Toronto, ON M5T
1R8, Canada
| | - Neil Vasdev
- Azrieli
Centre for Neuro-Radiochemistry, Brain Health Imaging Centre, Centre for Addiction and Mental Health, 250 College Street, Toronto, ON M5T
1R8, Canada
- Department
of Psychiatry, University of Toronto, 250 College Street, Toronto, ON M5T
1R8, Canada
| | - Kenneth Dahl
- Azrieli
Centre for Neuro-Radiochemistry, Brain Health Imaging Centre, Centre for Addiction and Mental Health, 250 College Street, Toronto, ON M5T
1R8, Canada
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6
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Lee V. Application of copper(i) salt and fluoride promoted Stille coupling reactions in the synthesis of bioactive molecules. Org Biomol Chem 2020; 17:9095-9123. [PMID: 31596305 DOI: 10.1039/c9ob01602c] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The Stille coupling between organostannanes and organohalides is an effective catalytic method for organic synthesis. Despite the ample amount of published results in this area, finding the optimal conditions for this transformation is often not straightforward. It was observed that this reaction could be accelerated with improved efficiency by the addition of a Cu(i) salt and fluoride. This review summarises the application of this simple protocol in the synthesis of natural products, their analogues and other biologically active molecules, from 2004 to 2018.
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Affiliation(s)
- Victor Lee
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
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7
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Zine K, Petrignet J, Delaye PO, Carcenac Y, Parrain JL, Abarbri M. Copper-Catalyzed Cross-Coupling of Fluorinated Vinylstannanes with Organic Halides. ChemistrySelect 2016. [DOI: 10.1002/slct.201600024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Khalid Zine
- Laboratoire d'Infectiologie et Santé Publique (UMR 1282); Equipe Recherche et Innovation en Chimie Médicinale. Faculté des Sciences; Parc de Grandmont 37200 Tours France
| | - Julien Petrignet
- Laboratoire d'Infectiologie et Santé Publique (UMR 1282); Equipe Recherche et Innovation en Chimie Médicinale. Faculté des Sciences; Parc de Grandmont 37200 Tours France
| | - Pierre-Olivier Delaye
- Laboratoire d'Infectiologie et Santé Publique (UMR 1282); Equipe Recherche et Innovation en Chimie Médicinale. Faculté des Sciences; Parc de Grandmont 37200 Tours France
| | - Yvan Carcenac
- Laboratoire d'Infectiologie et Santé Publique (UMR 1282); Equipe Recherche et Innovation en Chimie Médicinale. Faculté des Sciences; Parc de Grandmont 37200 Tours France
| | - Jean-Luc Parrain
- Aix Marseille Université Centrale Marseille, CNRS; iSm2 UMR 7313 13397 Marseille France
| | - Mohamed Abarbri
- Laboratoire d'Infectiologie et Santé Publique (UMR 1282); Equipe Recherche et Innovation en Chimie Médicinale. Faculté des Sciences; Parc de Grandmont 37200 Tours France
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8
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Preparation of 2-(t-butyl)dimethylsilyl-3,3-difluoropropenones via acylation reactions of 1-(t-butyl)dimethylsilyl-2,2-difluoroethenylstannane. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.07.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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9
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Thapa S, Basnet P, Gurung SK, Giri R. Copper-catalysed cross-coupling of arylzirconium reagents with aryl and heteroaryl iodides. Chem Commun (Camb) 2015; 51:4009-12. [DOI: 10.1039/c5cc00116a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
An unprecedented CuI-catalysed cross-coupling of arylzirconium reagents with aryl and heteroaryl iodides is reported. Mechanistic studies with a Cp2ZrAr2 complex revealed that Cp2Zr(Ar)(Cl) is the reactive species that undergoes transmetalation with (PN-1)CuI.
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Affiliation(s)
- Surendra Thapa
- Department of Chemistry & Chemical Biology
- The University of New Mexico
- Albuquerque
- USA
| | - Prakash Basnet
- Department of Chemistry & Chemical Biology
- The University of New Mexico
- Albuquerque
- USA
| | - Santosh K. Gurung
- Department of Chemistry & Chemical Biology
- The University of New Mexico
- Albuquerque
- USA
| | - Ramesh Giri
- Department of Chemistry & Chemical Biology
- The University of New Mexico
- Albuquerque
- USA
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10
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Thapa S, Shrestha B, Gurung SK, Giri R. Copper-catalysed cross-coupling: an untapped potential. Org Biomol Chem 2015; 13:4816-27. [DOI: 10.1039/c5ob00200a] [Citation(s) in RCA: 128] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Copper is emerging as a viable catalytic metal for cross-coupling reactions to construct carbon–carbon (C–C) bonds.
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Affiliation(s)
- Surendra Thapa
- Department of Chemistry & Chemical Biology
- The University of New Mexico
- Albuquerque
- USA
| | - Bijay Shrestha
- Department of Chemistry & Chemical Biology
- The University of New Mexico
- Albuquerque
- USA
| | - Santosh K. Gurung
- Department of Chemistry & Chemical Biology
- The University of New Mexico
- Albuquerque
- USA
| | - Ramesh Giri
- Department of Chemistry & Chemical Biology
- The University of New Mexico
- Albuquerque
- USA
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11
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12
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Zhou WX, Yin B, Li J, Sun WJ, Zhang FX. A C–S cross-coupling observed in situ reaction of 2-mercaptobenzothiazole with CuI. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.05.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Sanhueza IA, Nielsen MC, Ottiger M, Schoenebeck F. CuI-Mediated Trifluoromethylations with Stannanes. Preliminary Communication. Helv Chim Acta 2012. [DOI: 10.1002/hlca.201200450] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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15
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Pérez-Temprano MH, Casares JA, Espinet P. Bimetallic catalysis using transition and Group 11 metals: an emerging tool for C-C coupling and other reactions. Chemistry 2012; 18:1864-84. [PMID: 22267102 DOI: 10.1002/chem.201102888] [Citation(s) in RCA: 184] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Bimetallic catalysis refers to homogeneous processes in which either two transition metals (TM), or one TM and one Group 11 (G11) element (occasionally Hg also), cooperate in a synthetic process (often a C-C coupling) and their actions are connected by a transmetalation step. This is an emerging research area that differs from the isolated or tandem applications of the now classic processes (Stille, Negishi, Suzuki, Hiyama, Heck). Most of the reactions used so far combine Pd with a second metal, often Cu or Au, but syntheses involving very different TM couples (e.g., Cr/Ni in the catalyzed vinylation of aldehydes) have also been developed. Further development of the topic will soon demand a good knowledge of the mechanisms involved in bimetallic catalysis, but this knowledge is very limited for catalytic processes. However, there is much information available, dispersed in the literature, coming from basic research on exchange reactions occurring out of any catalytic cycle, in polynuclear complexes. These are essentially the same processes expected to operate in the heart of the catalytic process. This Review gathers together these two usually isolated topics in order to stimulate synergy between the bimetallic research coming from more basic organometallic studies and the more synthetic organic approaches to this chemistry.
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16
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17
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Chelucci G. Synthesis and Metal-Catalyzed Reactions of gem-Dihalovinyl Systems. Chem Rev 2011; 112:1344-462. [DOI: 10.1021/cr200165q] [Citation(s) in RCA: 323] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Giorgio Chelucci
- Dipartimento di Agraria, Università di Sassari, viale Italia 39, I-07100 Sassari, Italy
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18
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Hajduch J, Paleta O. Unusual β,β′-coupling and β-alkylation of methyl 2,3,3-trifluoropropenoate by lithium diorganocuprates. J Fluor Chem 2011. [DOI: 10.1016/j.jfluchem.2010.12.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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19
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Unexpected exo selectivity for an intramolecular Diels–Alder reaction involving a doubly-activated δ-pentenolide dienophile. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2010.12.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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20
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Peng Y, Li WZ. cine
Substitution and the Cu Effect in Stille Cross‐Coupling Reactions: Mechanistic Perspectives and Synthetic Utility. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000557] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yu Peng
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Wei‐Dong Z. Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
- State Key Laboratory of Elemento‐organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China, Fax: +86‐22‐23494613
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21
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Wang M, Lin Z. Stille Cross-Coupling Reactions of Alkenylstannanes with Alkenyl Iodides Mediated by Copper(I) Thiophene-2-carboxylate: A Density Functional Study. Organometallics 2010. [DOI: 10.1021/om100304t] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Meiyan Wang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, People’s Republic of China
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, People’s Republic of China
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22
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Carcenac Y, Zine K, Kizirian JC, Thibonnet J, Duchêne A, Parrain JL, Abarbri M. α- and β-Stannyl Trifluoromethylbutenoates: Regioselective Preparation and Use in Copper(I)-Catalyzed Allylation and Propargylation Reactions. Adv Synth Catal 2010. [DOI: 10.1002/adsc.200900828] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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23
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Lü B, Fu C, Ma S. Study on the selectivity in the electrophilic monofluorination of 2,3-allenoates with Selectfluor™: an efficient synthesis of 4-fluoro-2(5H)-furanones and 3-fluoro-4-oxo-2(E)-alkenoates. Org Biomol Chem 2010; 8:274-81. [DOI: 10.1039/b917793k] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Yasuda S, Yorimitsu H, Oshima K. Synthesis of Functionalized Aryliron Complexes [CpFe(CO)2Ar] by Copper-Mediated Transmetalation between [CpFe(CO)2I] and Aryltin Reagents. Organometallics 2009. [DOI: 10.1021/om900964e] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shigeo Yasuda
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto-daigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Hideki Yorimitsu
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto-daigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Koichiro Oshima
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto-daigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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25
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Recent advances in the synthesis of (hetero)aryl-substituted heteroarenes via transition metal-catalysed direct (hetero)arylation of heteroarene C–H bonds with aryl halides or pseudohalides, diaryliodonium salts, and potassium aryltrifluoroborates. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.10.015] [Citation(s) in RCA: 522] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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26
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Evano G, Blanchard N, Toumi M. Copper-mediated coupling reactions and their applications in natural products and designed biomolecules synthesis. Chem Rev 2008; 108:3054-131. [PMID: 18698737 DOI: 10.1021/cr8002505] [Citation(s) in RCA: 1690] [Impact Index Per Article: 105.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Gwilherm Evano
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint Quentin en Yvelines, 45 avenue des Etats-Unis, 78035 Versailles Cedex, France.
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27
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Lange H, Fröhlich R, Hoppe D. Cu(I)-catalyzed stereospecific coupling reactions of enantioenriched α-stannylated benzyl carbamates and their application. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.06.092] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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28
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Jena N, Kazmaier U. Synthesis of Stannylated Allyl- and Vinylphosphonates via Molybdenum-Catalyzed Hydrostannations. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800418] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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29
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β-Halovinylsilanes in oligoyne synthesis: a fluoride-catalysed unmasking of alkynes from β-fluorovinylsilanes. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.05.081] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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30
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Paixão MW, Weber M, Braga AL, de Azeredo JB, Deobald AM, Stefani HA. Copper salt-catalyzed homo-coupling reaction of potassium alkynyltrifluoroborates: a simple and efficient synthesis of symmetrical 1,3-diynes. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.02.083] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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31
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Denmark SE, Baird JD, Regens CS. Palladium-catalyzed cross-coupling of five-membered heterocyclic silanolates. J Org Chem 2008; 73:1440-55. [PMID: 18205384 PMCID: PMC2744297 DOI: 10.1021/jo7023784] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The preparation of pi-rich 2-aryl heterocycles by palladium-catalyzed cross-coupling of sodium heteroarylsilanolates with aryl iodides, bromides, and chlorides is described. The cross-coupling process was developed through extensive optimization of the following key variables: (1) identification of stable, isolable alkali metal silanolates, (2) identification of conditions for preformation and isolation of silanolate salts, (3) judicious choice in the palladium catalyst/ligand combination, and (4) selection of the protecting group on the nitrogen of indole. It was found that the alkali metal silanolates, either isolated or formed in situ, offered a significant rate enhancement and broader substrate scope over the use of silanols activated by Brønsted bases such as NaOt-Bu. In addition, the optimized conditions for the cross-coupling of 2-indolylsilanolates were readily applied to the cross-coupling of 2-pyrrolyl-, 2-furyl-, and 2-thienylsilanolates.
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Affiliation(s)
- Scott E Denmark
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, USA.
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32
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Fürstner A, Funel JA, Tremblay M, Bouchez LC, Nevado C, Waser M, Ackerstaff J, Stimson CC. A versatile protocol for Stille–Migita cross coupling reactions. Chem Commun (Camb) 2008:2873-5. [DOI: 10.1039/b805299a] [Citation(s) in RCA: 120] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Guan T, Yoshida M, Hara S. Stereoselective synthesis of (E)- and (Z)-Fluoroalkenylboronates using 2-fluoroalkylideneiodonium ylides generated from (2-fluoro-1-alkenyl)iodonium salts. J Org Chem 2007; 72:9617-21. [PMID: 17979292 DOI: 10.1021/jo701784t] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
(E)- and (Z)-(fluoroalkenyl)boronates were prepared stereospecifically by the reaction of 2-fluoroalkylideneiodonium ylide generated from (E)- or (Z)-(2-fluoroalkenyl)iodonium salts with di(p-fluorophenoxy)alkylboranes, followed by transesterification to pinacol esters. The resulting pinacol esters of (fluoroalkenyl)boranes were used for the stereoselective synthesis of trisubstituted fluoroalkenes by cross-coupling reactions.
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Affiliation(s)
- Tong Guan
- Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
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34
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Li JH, Tang BX, Tao LM, Xie YX, Liang Y, Zhang MB. Reusable copper-catalyzed cross-coupling reactions of aryl halides with organotins in inexpensive ionic liquids. J Org Chem 2007; 71:7488-90. [PMID: 16958550 DOI: 10.1021/jo061220j] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A combination of Cu2O nanoparticles with P(o-tol)3 shows highly catalytic activity for the Stille cross-coupling reaction. A series of copper catalysts and ligands were evaluated, and Cu2O nanoparticles combined with P(o-tol)3 provided the best results. In the presence of Cu2O nanoparticles and P(o-tol)3, a variety of aryl halides including aryl chlorides underwent the Stille reaction with organotins smoothly in moderate to excellent yields using inexpensive TBAB (n-Bu4NBr) as the medium. It is noteworthy that the Cu2O/P(o-tol)3/TBAB system can be recovered and reused at least three times without any loss of catalytic activity among the reactions of aryl iodides and activated aryl bromides.
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Affiliation(s)
- Jin-Heng Li
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China.
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Falck JR, Patel PK, Bandyopadhyay A. Stereospecific cross-coupling of alpha-(thiocarbamoyl)organostannanes with alkenyl, aryl, and heteroaryl iodides. J Am Chem Soc 2007; 129:790-3. [PMID: 17243814 PMCID: PMC2526971 DOI: 10.1021/ja064948q] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Racemic and scalemic PTC-protected alpha-hydroxystannanes cross-couple with alkenyl/aryl/heteroaryl iodides in moderate to good yields using copper(I) thiophene-2-carboxylate (CuTC) in THF at or below room temperature. Simple aryl iodides and 1-iodocyclohexene, two classes of electrophiles that typically react sluggishly, are also good substrates. Cross-couplings proceed with retention of configuration at the alkenyl- and stannyl-substituted stereocenters.
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Affiliation(s)
- J R Falck
- Departments of Biochemistry and Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA.
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Kim HY, Cho CG. The Diels-Alder cycloadditions of 3,5-dibromo-2-pyrone and its derivatives. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/s0959-6380(07)80004-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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S. Fairlamb IJ. Transition metals in organic synthesis: cross-coupling, C–H activation processes and cyclisation strategies. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b614710k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Champouret YDM, Fawcett J, Nodes WJ, Singh K, Solan GA. Spacially Confined M2 Centers (M = Fe, Co, Ni, Zn) on a Sterically Bulky Binucleating Support: Synthesis, Structures and Ethylene Oligomerization Studies. Inorg Chem 2006; 45:9890-900. [PMID: 17112287 DOI: 10.1021/ic061286x] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two new bulky aryl-bridged pyridyl-imine compartmental (pro)ligands, 2,6-{(2,6-i-Pr(2)C6H3)N=C(Me)C5H3N}2C6H3Y (Y = H L1, OH L2-H), have been prepared in moderate to good overall yields via a Stille-type cross-coupling approach. The molecular structure of L2-H reveals a transoid configuration within the pyridyl-imine units with a hydrogen-bonding interaction maintaining the phenol coplanar with one of the adjacent pyridine rings. The interaction of 2 equiv of MX2 with L1 in n-BuOH at 110 degrees C gives the binuclear complexes, [(L1)M2X4] (M = Fe, X = Cl (1a); M = Co, X = Cl (1b); M = Ni, X = Br (1c); M = Zn, X = Cl (1d)), in which the metal centers adopt distorted tetrahedral geometries and occupy the two pyridyl-imine cavities in L1. In contrast, deprotonation of L2-H occurs upon reaction with 2 equiv of MX2 to afford the phenolate-bridged species [(L2)M2(mu-X)X2] (M = Fe, X = Cl (2a); M = Co, X = Cl (2b); M = Ni, X = Br (2c); M = Zn, X = Cl (2d)). 1H NMR studies of diamagnetic 1d and 2d reveal that the limited rotation of the N-aryl groups in 1d is further impeded in 2d by steric interactions imparted by the two closely located N-aryl groups. Partial displacement of the bridging bromide in 2c results upon its treatment with acetonitrile to afford [(L2)Ni2Br3(NCMe)] [2c(MeCN)]; no such reaction occurs for 2a, 2b, or 2d. Upon activation with excess methylalumoxane (MAO), 1b, 1c, 2b, and 2c show some activity for alkene oligomerization forming low molecular-weight materials with methyl-branched products predominating for the nickel systems. Single-crystal X-ray diffraction studies have been performed on L2-H, 1c, 2b, 2c, 2c(NCMe), and 2d.
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Affiliation(s)
- Yohan D M Champouret
- Department of Chemistry, University of Leicester, University Road, Leicester LE1 7RH, U.K
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