1
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Tang Z, Chu S, Wu X, Chen S, Chen L, Tang J, Wang H. A Practical Method for Synthesizing Iptacopan. Molecules 2024; 29:2289. [PMID: 38792150 PMCID: PMC11124358 DOI: 10.3390/molecules29102289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/06/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
Iptacopan, the first orally available small-molecule complement factor B inhibitor, was developed by Novartis AG of Switzerland. Iptacopan for the treatment of PNH was just approved by the FDA in December 2023. Other indications for treatment are still in phase III clinical trials. Iptacopan is a small-molecule inhibitor targeting complement factor B, showing positive therapeutic effects in the treatment of PNH, C3 glomerulonephritis, and other diseases. Although Iptacopan is already on the market, there has been no detailed synthesis process or specific parameter report on the intermediates during the synthesis of its compounds except for the original research patent. In this study, a practical synthesis route for Iptacopan was obtained through incremental improvement while a biosynthesis method for ketoreductase was used for the synthesis of the pivotal intermediate 12. Moreover, by screening the existing enzyme library of our research group on the basis of random as well as site-directed mutagenesis methods, an enzyme (M8) proven to be of high optical purity with a high yield for biocatalectic reduction was obtained. This enzyme was used to prepare the compound benzyl (2S,4S)-4-hydroxy-2-(4-(methoxycarbonyl)-phenyl)-piperidine-1-carboxylate) white powder (36.8 g HPLC purity: 98%, ee value: 99%). In the synthesis of intermediate 15, the reaction was improved from two-step to one-step, which indicated that the risk of chiral allosterism was reduced while the scale was expanded. Finally, Iptacopan was synthesized in a seven-step reaction with a total yield of 29%. Since three chiral intermediate impurities were synthesized directionally, this paper lays a solid foundation for the future of pharmaceutical manufacturing.
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Affiliation(s)
| | | | | | | | | | - Jiawei Tang
- National Key Laboratory of Lead Druggability Research, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, 285 Gebaini Road, Pudong, Shanghai 201203, China; (Z.T.); (S.C.); (X.W.); (S.C.); (L.C.)
| | - Hongbo Wang
- National Key Laboratory of Lead Druggability Research, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, 285 Gebaini Road, Pudong, Shanghai 201203, China; (Z.T.); (S.C.); (X.W.); (S.C.); (L.C.)
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2
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Li S, Pan M, Shen Y, Li Y, Li W. A Synthesis of α-Alkyl Cycloenones by Pd-Catalyzed Suzuki-Miyaura Coupling with Cyclic Morita-Baylis-Hillman Adducts. J Org Chem 2024; 89:5239-5249. [PMID: 38587356 DOI: 10.1021/acs.joc.3c02530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
We herein disclose a Pd-catalyzed Suzuki-Miyaura coupling of cyclic Morita-Baylis-Hillman adducts with organoboronic acids under mild conditions, which allows for a rapid access to diverse α-alkyl substituted cycloenones. The advantage of this method resides in the employment of functionalized allyl alcohols as the unprecedented electrophilic partners in the absence of external activators.
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Affiliation(s)
- Shangzhang Li
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P R China
| | - Mengni Pan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P R China
| | - Yue Shen
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P R China
| | - Yang Li
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P R China
| | - Wanfang Li
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P R China
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3
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Miller JL, Damodaran K, Floreancig PE. Nitrogen Heterocycle Synthesis through Hydride Abstraction of Acyclic Carbamates and Related Species: Scope, Mechanism, Stereoselectivity, and Product Conformation Studies. Chemistry 2023; 29:e202302977. [PMID: 37796745 DOI: 10.1002/chem.202302977] [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: 09/13/2023] [Revised: 10/04/2023] [Accepted: 10/05/2023] [Indexed: 10/07/2023]
Abstract
Acyliminium ions and related species are potent electrophiles that can be quite valuable in the synthesis of nitrogen-containing molecules. This manuscript describes a protocol to form these intermediates through hydride abstractions of easily accessible allylic carbamates, amides, and sulfonamides that avoids the reversibility that is possible in classical condensation-based routes. These intermediates are used in the preparation of a range of nitrogen-containing heterocycles, and in many cases high levels of stereocontrol are observed. Specifically areas of investigation include the impact of chemical structure on oxidation efficiency, the geometry of the intermediate iminium ions, the impact of a substrate stereocenter on stereocontrol, and an examination of transition state geometry.
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Affiliation(s)
- Jenna L Miller
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA
| | - Krishnan Damodaran
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA
| | - Paul E Floreancig
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA
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4
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Polimera SR, Ilangovan A, Subbaiah MAM. Examining the Scope of Deriving β-Aryl Enones from Enol Silanes as Ketone Equivalents via Pd(II)-Mediated Sequential Dehydrosilylation and Arylation. J Org Chem 2023. [PMID: 37192466 DOI: 10.1021/acs.joc.3c00502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Silyl enol ethers were examined as a masked source of saturated ketones to derive β-aryl enones and their derivatives by dehydrosilylation to generate enones in situ and subsequent oxidative arylation with arylboronic acids as transmetallation coupling partners using relayed Pd(II) catalysis in one pot under base-free conditions. Oxygen was found to be an efficient and green oxidant to enable both dehydrosilylation of enol silanes and arylation. Additionally, arylation conditions can be custom-designed to take advantage of aryl halides as an alternative source of arylating agents. The preparative scope was investigated with 35 examples (up to 95% yield), and mechanistic studies implied a cationic Pd(II)-based catalytic system.
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Affiliation(s)
- Subba Rao Polimera
- Department of Medicinal Chemistry, Biocon Bristol Myers Squibb R&D Centre, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore 560099, Karnataka, India
- Department of Chemistry, Bharathidasan University, Palkalaiperur, Thiruchirapalli 620024, Tamil Nadu, India
| | - Andivelu Ilangovan
- Department of Chemistry, Bharathidasan University, Palkalaiperur, Thiruchirapalli 620024, Tamil Nadu, India
| | - Murugaiah A M Subbaiah
- Department of Medicinal Chemistry, Biocon Bristol Myers Squibb R&D Centre, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore 560099, Karnataka, India
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5
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Son SH, Shin JW, Won HJ, Yoo HS, Cho YY, Kim SL, Jang YH, Park BY, Kim NJ. Synthesis of meta-(Indol-3-yl)phenols from Indoles and Cyclohexenone via Palladium(II)-Catalyzed Oxidative Heck Reaction and Dehydrogenative Aromatization in a One-Step Sequence. Org Lett 2021; 23:7467-7471. [PMID: 34523938 DOI: 10.1021/acs.orglett.1c02679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Facile construction of a meta-(indol-3-yl)phenol framework with a wide substrate scope (a total of 25 compounds) via a palladium(II)-catalyzed oxidative Heck reaction and dehydrogenative aromatization in a one-step sequence is reported. This methodology affords a novel route for the privileged structures that are challenging to access via a direct link between indole and phenol, in a highly efficient and atom-economical manner.
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Affiliation(s)
- Seung Hwan Son
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Jeong-Won Shin
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Hyuck-Jae Won
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Hyung-Seok Yoo
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Yang Yil Cho
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Soo Lim Kim
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Yoon Hu Jang
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Boyoung Y Park
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Nam-Jung Kim
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea.,Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
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6
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Steeds HG, Knowles JP, Yu WL, Richardson J, Cooper KG, Booker‐Milburn KI. Rapid Access to Azabicyclo[3.3.1]nonanes by a Tandem Diverted Tsuji-Trost Process. Chemistry 2020; 26:14330-14334. [PMID: 32812670 PMCID: PMC7702095 DOI: 10.1002/chem.202003762] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Indexed: 12/14/2022]
Abstract
A three-step synthesis of the 2-azabicyclo[3.3.1]nonane ring system from simple pyrroles, employing a combined photochemical/palladium-catalysed approach is reported. Substrate scope is broad, allowing the incorporation of a wide range of functionality relevant to medicinal chemistry. Mechanistic studies demonstrate that the process occurs by acid-assisted C-N bond cleavage followed by β-hydride elimination to form a reactive diene, demonstrating that efficient control of what might be considered off-cycle reactions can result in productive tandem catalytic processes. This represents a short and versatile route to the biologically important morphan scaffold.
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Affiliation(s)
- Hannah G. Steeds
- School of ChemistryUniversity of BristolCantock' CloseBristolBS8 1TSUK
| | | | - Wai L. Yu
- School of ChemistryUniversity of BristolCantock' CloseBristolBS8 1TSUK
| | | | - Katie G. Cooper
- Pharmaceutical Technology & DevelopmentAstraZenecaMacclesfield CampusCheshireSK10 2NAUK
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7
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9-(Diphenylphosphino)anthracene-based phosphapalladacycle catalyzed conjugate addition of arylboronic acids to electron-deficient alkenes. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152257] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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8
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Wen ZK, Wu XX, Bao WK, Xiao JJ, Chao JB. Palladium-Catalyzed Regioselective Coupling Cyclohexenone into Indoles: Atom-Economic Synthesis of β-Indolyl Cyclohexenones and Derivatization Applications. Org Lett 2020; 22:4898-4902. [PMID: 32515596 DOI: 10.1021/acs.orglett.0c01763] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Herein, we report a palladium-catalyzed dehydrogenative cross-coupling of indoles with cyclic enones to give β-indolyl cyclic enones under mild and neutral reaction conditions. The key to the success is to explore a mild condition, which ensures the indole C-H activation and subsequent syn β-hydride elimination through rapid enolization isomerization of Pd(II)-enolate while suppressing other undesired side reactions. Synthetic utility has also been demonstrated in the flexible transformation of the coupling products to meta-phenols and benzo[a]carbazoles.
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Affiliation(s)
- Zhen-Kang Wen
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Xiao-Xue Wu
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Wen-Kai Bao
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Jing-Jing Xiao
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Jian-Bin Chao
- Scientific Instrument Center, Shanxi University, Taiyuan 030006, China
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9
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Kolien J, Inglis AR, Vasdev RAS, Howard BI, Kruger PE, Preston D. Exploiting the labile site in dinuclear [Pd2L2]n+ metallo-cycles: multi-step control over binding affinity without alteration of core host structure. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00901f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthetic metallosupramolecular systems have generally been binary (on/off) when they have control over molecular recognition. This report details a dipalladium(ii) system with four-step graduated control over recognition for a guest.
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Affiliation(s)
- James Kolien
- MacDiarmid Institute for Advanced Materials and Nanotechnology
- School of Physical and Chemical Sciences
- University of Canterbury
- Christchurch 8041
- New Zealand
| | - Amanda R. Inglis
- MacDiarmid Institute for Advanced Materials and Nanotechnology
- School of Physical and Chemical Sciences
- University of Canterbury
- Christchurch 8041
- New Zealand
| | | | - Ben I. Howard
- MacDiarmid Institute for Advanced Materials and Nanotechnology
- School of Physical and Chemical Sciences
- University of Canterbury
- Christchurch 8041
- New Zealand
| | - Paul E. Kruger
- MacDiarmid Institute for Advanced Materials and Nanotechnology
- School of Physical and Chemical Sciences
- University of Canterbury
- Christchurch 8041
- New Zealand
| | - Dan Preston
- MacDiarmid Institute for Advanced Materials and Nanotechnology
- School of Physical and Chemical Sciences
- University of Canterbury
- Christchurch 8041
- New Zealand
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10
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Wen ZK, Zhao ZK, Wang NJ, Chen ZL, Chao JB, Feng LH. Palladium-Catalyzed Controllable Reductive/Oxidative Heck Coupling between Cyclic Enones and Thiophenes via C–H Activation. Org Lett 2019; 21:9545-9549. [DOI: 10.1021/acs.orglett.9b03721] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhen-Kang Wen
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Ze-Kai Zhao
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Ning-Jing Wang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Zi-Ling Chen
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Jian-Bin Chao
- Scientific Instrument Center, Shanxi University, Taiyuan 030006, China
| | - Li-Heng Feng
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
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11
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Lamb CJC, Vilela F, Lee AL. Pd(II)-Catalyzed Enantioselective Desymmetrization of Polycyclic Cyclohexenediones: Conjugate Addition versus Oxidative Heck. Org Lett 2019; 21:8689-8694. [PMID: 31613102 DOI: 10.1021/acs.orglett.9b03293] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Pd(II)-catalyzed desymmetrization of polycyclic cyclohexenediones has been achieved with high enantio- and diastereoselectivities. Up to five contiguous stereocenters are desymmetrized, while simultaneously, an additional stereocenter is created by the enantioselective conjugate addition. Surprisingly, the conjugate addition products dominate even under typical oxidative Heck conditions, and these observations may provide some insight into the competition between the two related reactions.
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Affiliation(s)
- Claire J C Lamb
- Institute of Chemical Sciences , Heriot-Watt University , Edinburgh EH14 4AS , Scotland , U.K
| | - Filipe Vilela
- Institute of Chemical Sciences , Heriot-Watt University , Edinburgh EH14 4AS , Scotland , U.K
| | - Ai-Lan Lee
- Institute of Chemical Sciences , Heriot-Watt University , Edinburgh EH14 4AS , Scotland , U.K
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12
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Menezes da Silva VH, Morgon NH, Correia CR, Braga AA. DFT perspective on the selectivity and mechanism of ligand-free Heck reaction involving allylic esters and arenediazonium salts. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.05.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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13
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Lee DS, Cho EJ. Fluoroalkenylation of boronic acids via an oxidative Heck reaction. Org Biomol Chem 2019; 17:4317-4325. [PMID: 30973559 DOI: 10.1039/c9ob00332k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A fluoroalkenylation of boronic acids with fluoroalkyl alkenes has been developed. The Pd-catalyzed oxidative Heck coupling reaction proceeds under an oxygen atmosphere at room temperature, in the absence of a base and/or a ligand, showing excellent practicality of the process. This simple transformation is highly stereoselective to provide only E-isomers. In addition to the general approach using alkenes with functionalized fluoroalkyl reagents, this method, by transferring an aromatic system to the electron-deficient fluoroalkyl alkene, provides an efficient alternative method to yield valuable organofluorines.
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Affiliation(s)
- Da Seul Lee
- Department of Chemistry, Chung-Ang University 84 Heukseok-ro, Dongjak-gu Seoul 06974, Republic of Korea.
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14
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Schroeter F, Lerch S, Strassner T. Oxidative and Reductive Cross-Coupling Reactions Catalyzed by an Anionic “Ligandless” Palladium Complex. Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.8b00274] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Felix Schroeter
- Physikalische Organische Chemie, TU Dresden, Bergstr. 66, 01062 Dresden, Germany
| | - Swantje Lerch
- Physikalische Organische Chemie, TU Dresden, Bergstr. 66, 01062 Dresden, Germany
| | - Thomas Strassner
- Physikalische Organische Chemie, TU Dresden, Bergstr. 66, 01062 Dresden, Germany
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15
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Smith CD, Phillips D, Tirla A, France DJ. Catalytic Isohypsic-Redox Sequences for the Rapid Generation of C sp3 -Containing Heterocycles. Chemistry 2018; 24:17201-17204. [PMID: 30203869 PMCID: PMC6391974 DOI: 10.1002/chem.201804131] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 09/10/2018] [Indexed: 12/12/2022]
Abstract
Cross‐coupling reactions catalyzed by transition metals are among the most influential in modern synthetic chemistry. The vast majority of transition‐metal‐catalyzed cross‐couplings rely on a catalytic cycle involving alternating oxidation and reduction of the metal center and are generally limited to forging just one type of new bond per reaction (e.g., the biaryl linkage formed during a Suzuki cross‐coupling). This work presents an Isohypsic‐Redox Sequence (IRS) that uses one metal to effect two catalytic cycles, thereby generating multiple new types of bonds from a single catalyst source. We show that the IRS strategy is amenable to several widely used transformations including the Suzuki–Miyaura coupling, Buchwald–Hartwig amination, and Wacker oxidation. Furthermore, each of these reactions generates value‐added heterocycles with significant sp3‐C (3‐dimensional) content. Our results provide a general framework for generating complex products by using a single metal to fulfill multiple roles. By uniting different combinations of reactions in the isohypsic and redox phases of the process, this type of catalytic multiple bond‐forming platform has the potential for wide applicability in the efficient synthesis of functional organic molecules.
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Affiliation(s)
- Craig D Smith
- WestChem School of Chemistry, University of Glasgow, University Avenue, Glasgow, G12 8QQ, UK
| | - David Phillips
- WestChem School of Chemistry, University of Glasgow, University Avenue, Glasgow, G12 8QQ, UK
| | - Alina Tirla
- WestChem School of Chemistry, University of Glasgow, University Avenue, Glasgow, G12 8QQ, UK
| | - David J France
- WestChem School of Chemistry, University of Glasgow, University Avenue, Glasgow, G12 8QQ, UK
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16
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Zhi W, Li J, Zou D, Wu Y, Wu Y. Palladium-catalyzed diastereoselective synthesis of β,β-diarylpropionic acid derivatives and its application to the total synthesis of ( R )-tolterodine and the enantiomer of a key intermediate for MK-8718. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2017.12.082] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Wen ZK, Song TT, Liu YF, Chao JB. Palladium-catalyzed dehydrogenative coupling of cyclic enones with thiophenes: a rapid access to β-heteroarylated cyclic enones. Chem Commun (Camb) 2018; 54:3668-3671. [DOI: 10.1039/c8cc01059e] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A dehydrogenative coupling reaction of cyclic enones with thiophenes through palladium-catalyzed C–H functionalization is reported herein. Further molecular transformations of the coupling products to synthetically useful meta-heteroarylated phenols are also demonstrated.
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Affiliation(s)
- Zhen-Kang Wen
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
| | - Ting-Ting Song
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
| | - Yu-Fang Liu
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
| | - Jian-Bin Chao
- Scientific Instrument Center
- Shanxi University
- Taiyuan 030006
- China
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18
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Zhi W, Li J, Zou D, Wu Y, Wu Y. Palladium-Catalyzed Diastereoselective Synthesis of 3-Arylbutanoic Acid Derivatives. J Org Chem 2017; 82:12286-12293. [PMID: 29039190 DOI: 10.1021/acs.joc.7b02104] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first palladium-catalyzed diastereoselective conjugate addition of arylboronic acids to chiral imides is reported. The catalytic system employing 4-tert-butyloxazolidin-2-one as the chiral auxiliary in a mixed solvent system of MeOH/H2O (1:3) under an air atmosphere provides the optically active 3-arylbutanoic acid derivatives in excellent yields with high diastereoselectivity.
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Affiliation(s)
- Wubin Zhi
- The College of Chemistry and Molecular Engineering, Zhengzhou University , Zhengzhou 450052, People's Republic of China
| | - Jingya Li
- Tetranov Biopharm, LLC, and Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou, 450052, People's Republic of China
| | - Dapeng Zou
- The College of Chemistry and Molecular Engineering, Zhengzhou University , Zhengzhou 450052, People's Republic of China
| | - Yusheng Wu
- The College of Chemistry and Molecular Engineering, Zhengzhou University , Zhengzhou 450052, People's Republic of China.,Tetranov Biopharm, LLC, and Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou, 450052, People's Republic of China.,Tetranov International, Inc., 100 Jersey Avenue, Suite A340, New Brunswick, New Jersey 08901, United States
| | - Yangjie Wu
- The College of Chemistry and Molecular Engineering, Zhengzhou University , Zhengzhou 450052, People's Republic of China
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19
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Lamb CJC, Nderitu BG, McMurdo G, Tobin JM, Vilela F, Lee AL. Auto-Tandem Catalysis: Pd II -Catalysed Dehydrogenation/Oxidative Heck Reaction of Cyclopentane-1,3-diones. Chemistry 2017; 23:18282-18288. [PMID: 29105890 PMCID: PMC5767738 DOI: 10.1002/chem.201704442] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Indexed: 12/29/2022]
Abstract
A PdII catalyst system has been used to successfully catalyse two mechanistically distinct reactions in a one-pot procedure: dehydrogenation of 2,2-disubstituted cyclopentane-1,3-diones and the subsequent oxidative Heck coupling. This auto-tandem catalytic reaction is applicable to both batch and continuous flow processes, with the latter being the first example of a tandem aerobic dehydrogenation/oxidative Heck in flow. In addition, a telescoped reaction involving enantioselective desymmetrisation of the all-C quaternary centre was successfully achieved.
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Affiliation(s)
- Claire J C Lamb
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, United Kingdom
| | - Bryan G Nderitu
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, United Kingdom
| | - Gemma McMurdo
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, United Kingdom
| | - John M Tobin
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, United Kingdom
| | - Filipe Vilela
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, United Kingdom
| | - Ai-Lan Lee
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, United Kingdom
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20
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Yang WR, Choi YS, Jeong JH. Efficient synthesis of polymethoxyselenoflavones via regioselective direct C-H arylation of selenochromones. Org Biomol Chem 2017; 15:3074-3083. [PMID: 28321447 DOI: 10.1039/c7ob00118e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Substantial research has suggested that the configuration and the total number of functional groups on flavones influence their bioactivity. To investigate the changes in the biological activities of selenoflavones in relationship to structural changes, the development of a generally applicable synthetic method was a key. Until now, an efficient pathway for palladium-catalyzed direct arylation with the selenocyclic enone systems is not known in the literature. We herein introduce a simple direct C-H arylation of two difficult coupling partners, selenochromones and electron-rich aryl bromide, affording diverse polymethoxyselenoflavones with great efficiency and high selectivity.
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Affiliation(s)
- Woo-Ram Yang
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea.
| | - Yong-Sung Choi
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea.
| | - Jin-Hyun Jeong
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea.
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21
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Chinthakindi PK, Govender KB, Kumar AS, Kruger HG, Govender T, Naicker T, Arvidsson PI. A Synthesis of “Dual Warhead” β-Aryl Ethenesulfonyl Fluorides and One-Pot Reaction to β-Sultams. Org Lett 2017; 19:480-483. [DOI: 10.1021/acs.orglett.6b03634] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - A. Sanjeeva Kumar
- Catalysis
and Peptide Research Unit, University of KwaZulu-Natal, Durban, South Africa
| | - Hendrik G. Kruger
- Catalysis
and Peptide Research Unit, University of KwaZulu-Natal, Durban, South Africa
| | - Thavendran Govender
- Catalysis
and Peptide Research Unit, University of KwaZulu-Natal, Durban, South Africa
| | - Tricia Naicker
- Catalysis
and Peptide Research Unit, University of KwaZulu-Natal, Durban, South Africa
| | - Per I. Arvidsson
- Catalysis
and Peptide Research Unit, University of KwaZulu-Natal, Durban, South Africa
- Science for Life Laboratory, Drug Discovery & Development Platform & Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
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22
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Mannathan S, Raoufmoghaddam S, Reek JNH, de Vries JG, Minnaard AJ. Corrigendum: Palladium(II) Acetate Catalyzed Reductive Heck Reaction of Enones; A Practical Approach. ChemCatChem 2016. [DOI: 10.1002/cctc.201600726] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Choi H, Min M, Peng Q, Kang D, Paton RS, Hong S. Unraveling innate substrate control in site-selective palladium-catalyzed C-H heterocycle functionalization. Chem Sci 2016; 7:3900-3909. [PMID: 30155034 PMCID: PMC6013790 DOI: 10.1039/c5sc04590h] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Accepted: 03/02/2016] [Indexed: 11/23/2022] Open
Abstract
Understanding the regioselectivity of C-H activation in the absence of directing groups is an important step towards the design of site-selective C-H functionalizations. The Pd(ii)-catalyzed direct arylation of chromones and enaminones provides an intriguing example where a simple substitution leads to a divergence in substrate-controlled site-selectivity. We describe computational and experimental studies which reveal this results from a switch in mechanism and therefore the selectivity-determining step. We present computational results and experimentally measured kinetic isotope effects and labelling studies consistent with this proposal. The C-H activation of these substrates proceeds via a CMD mechanism, which favors more electron rich positions and therefore displays a pronounced kinetic selectivity for the C3-position. However, C2-selective carbopalladation is also a competitive pathway for chromones so that the overall regiochemical outcome depends on which substrate undergoes activation first. Our studies provide insight into the site-selectivity based on the favorability of two competing CMD and carbopalladation processes of the substrates undergoing coupling. This model can be utilized to predict the regioselectivity of coumarins which are proficient substrates for carbopalladation. Furthermore, our model is able to account for the opposite selectivities observed for enaminone and chromone, and explains how a less reactive coupling partner leads to a switch in selectivity.
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Affiliation(s)
- Hwanho Choi
- Chemistry Research Laboratory , Department of Chemistry , University of Oxford , 12 Mansfield Road , Oxford OX1 3TA , UK . ;
| | - Minsik Min
- Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon , 34141 Korea .
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon , 34141 Korea
| | - Qian Peng
- Chemistry Research Laboratory , Department of Chemistry , University of Oxford , 12 Mansfield Road , Oxford OX1 3TA , UK . ;
| | - Dahye Kang
- Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon , 34141 Korea .
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon , 34141 Korea
| | - Robert S Paton
- Chemistry Research Laboratory , Department of Chemistry , University of Oxford , 12 Mansfield Road , Oxford OX1 3TA , UK . ;
| | - Sungwoo Hong
- Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon , 34141 Korea .
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon , 34141 Korea
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24
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Yang SM, Kuo GH, Gaul MD, Murray WV. Synthesis of β-Substituted Cyclic Enones via Phosphonium Salt-Activated, Palladium-Catalyzed Cross-Coupling of Cyclic 1,3-Diones. J Org Chem 2016; 81:3464-9. [PMID: 27052958 DOI: 10.1021/acs.joc.6b00317] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Phosphonium salt-activated, Pd-catalyzed Suzuki-Miyaura and Sonogashira cross-coupling reactions of cyclic 1,3-diones in the synthesis of β-substituted cyclic enones are described. These transformations exhibit good isolated yield and high generality with respect to both substrates and coupling partners. Extension of the substrate scope to cyclic 1,3-dione equivalents, such as 2-cyanocyclohexanone (4), is also briefly examined.
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Affiliation(s)
- Shyh-Ming Yang
- Cardiovascular and Metabolism Research, Janssen Research and Development, LLC , Welsh & McKean Roads, Spring House, Pennsylvania 19477, United States
| | - Gee-Hong Kuo
- Cardiovascular and Metabolism Research, Janssen Research and Development, LLC , Welsh & McKean Roads, Spring House, Pennsylvania 19477, United States
| | - Michael D Gaul
- Cardiovascular and Metabolism Research, Janssen Research and Development, LLC , Welsh & McKean Roads, Spring House, Pennsylvania 19477, United States
| | - William V Murray
- Cardiovascular and Metabolism Research, Janssen Research and Development, LLC , Welsh & McKean Roads, Spring House, Pennsylvania 19477, United States
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25
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Abstract
This review highlights the use of the oxidative boron Heck reaction in enantioselective Heck-type couplings.
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Affiliation(s)
- A.-L. Lee
- Institute of Chemical Sciences
- School of Engineering and Physical Sciences
- Heriot-Watt University
- Edinburgh EH14 4AS
- UK
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26
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Lee J, Yu J, Son SH, Heo J, Kim T, An JY, Inn KS, Kim NJ. A versatile approach to flavones via a one-pot Pd(ii)-catalyzed dehydrogenation/oxidative boron-Heck coupling sequence of chromanones. Org Biomol Chem 2016; 14:777-784. [DOI: 10.1039/c5ob01911g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A variety of flavones were expediently synthesized from readily accessible chromanones via a one-pot sequence involving Pd(ii)-catalyzed dehydrogenation and oxidative boron-Heck coupling with arylboronic acid pinacol esters.
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Affiliation(s)
- Jun Lee
- College of Pharmacy
- Kyung Hee University
- Seoul
- Republic of Korea
| | - Jihyun Yu
- College of Pharmacy
- Kyung Hee University
- Seoul
- Republic of Korea
| | - Seung Hwan Son
- College of Pharmacy
- Kyung Hee University
- Seoul
- Republic of Korea
| | - Jinyuk Heo
- College of Pharmacy
- Kyung Hee University
- Seoul
- Republic of Korea
| | - Taelim Kim
- Department of Life and Nanopharmaceutical Science
- Kyung Hee University
- Seoul
- Republic of Korea
| | - Ji-Young An
- College of Pharmacy
- Kyung Hee University
- Seoul
- Republic of Korea
| | - Kyung-Soo Inn
- College of Pharmacy
- Kyung Hee University
- Seoul
- Republic of Korea
| | - Nam-Jung Kim
- College of Pharmacy
- Kyung Hee University
- Seoul
- Republic of Korea
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27
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Raoufmoghaddam S, Mannathan S, Minnaard AJ, de Vries JG, Reek JNH. Palladium(0)/NHC-Catalyzed Reductive Heck Reaction of Enones: A Detailed Mechanistic Study. Chemistry 2015; 21:18811-20. [DOI: 10.1002/chem.201503217] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 09/22/2015] [Indexed: 01/01/2023]
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28
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Silarska E, Trzeciak A. Oxygen-promoted coupling of arylboronic acids with olefins catalyzed by [CA]2[PdX4] complexes without a base. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.07.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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29
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Hota PK, Vijaykumar G, Pariyar A, Sau SC, Sen TK, Mandal SK. An Abnormal N-Heterocyclic Carbene-Based Palladium Dimer: Aqueous Oxidative Heck Coupling Under Ambient Temperature. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500220] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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30
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Mannathan S, Raoufmoghaddam S, Reek JNH, de Vries JG, Minnaard AJ. Palladium(II) Acetate Catalyzed Reductive Heck Reaction of Enones; A Practical Approach. ChemCatChem 2015. [DOI: 10.1002/cctc.201500760] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Subramaniyan Mannathan
- Stratingh Institute for Chemistry; University of Groningen; Nijenborgh 7 9747 AG Groningen The Netherlands), Fax: (+31) 50-363-429
| | - Saeed Raoufmoghaddam
- Van ‘t Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Joost N. H. Reek
- Van ‘t Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Johannes G. de Vries
- Stratingh Institute for Chemistry; University of Groningen; Nijenborgh 7 9747 AG Groningen The Netherlands), Fax: (+31) 50-363-429
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Adriaan J. Minnaard
- Stratingh Institute for Chemistry; University of Groningen; Nijenborgh 7 9747 AG Groningen The Netherlands), Fax: (+31) 50-363-429
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31
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Sipos G, Drinkel EE, Dorta R. The emergence of sulfoxides as efficient ligands in transition metal catalysis. Chem Soc Rev 2015; 44:3834-60. [PMID: 25954773 DOI: 10.1039/c4cs00524d] [Citation(s) in RCA: 169] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Sulfoxides are capable of forming stable complexes with transition metals and there have been many comprehensive studies into their binding properties. However, the use of sulfoxides, particularly chiral sulfoxides, as ligands in transition metal catalysis is rather less well developed. This review aims to describe these catalytic studies and covers new developments that are showing very promising results and that have led to a renewed interest in this field.
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Affiliation(s)
- Gellért Sipos
- School of Chemistry and Biochemistry, University of Western Australia, 35 Stirling Highway, 6009, Crawley, Australia.
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32
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Ren S, Zhang J, Zhang J, Wang H, Zhang W, Liu Y, Liu M. Copper/Selectfluor-System-Catalyzed Dehydration-Oxidation of Tertiary Cycloalcohols: Access to β-Substituted Cyclohex-2-enones, 4-Arylcoumarins, and Biaryls. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500610] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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33
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Guchhait SK, Priyadarshani G. Synthesis of 2-Arylpyridopyrimidinones, 6-Aryluracils, and Tri- and Tetrasubstituted Conjugated Alkenes via Pd-Catalyzed Enolic C–O Bond Activation–Arylation. J Org Chem 2015; 80:6342-9. [DOI: 10.1021/acs.joc.5b00771] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Sankar K. Guchhait
- Department
of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), S. A. S. Nagar
(Mohali) 160062, Punjab, India
| | - Garima Priyadarshani
- Department
of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), S. A. S. Nagar
(Mohali) 160062, Punjab, India
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34
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Chung LGY, Juwaini NAB, Seayad J. Palladium-Catalyzed Oxidative Heck Coupling of Cyclic Enones with Simple Arenes by CH Activation. ChemCatChem 2015. [DOI: 10.1002/cctc.201500079] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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35
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36
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Walker SE, Lamb CJC, Beattie NA, Nikodemiak P, Lee AL. Oxidative Heck desymmetrisation of 2,2-disubstituted cyclopentene-1,3-diones. Chem Commun (Camb) 2015; 51:4089-92. [DOI: 10.1039/c5cc00407a] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Oxidative Heck couplings have been successfully developed for 2,2-disubstituted cyclopentene-1,3-diones. The direct coupling onto the 2,2-disubstituted cyclopentene-1,3-dione core provides a novel, expedient and useful way of desymmetrising all-carbon quaternary centres.
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Affiliation(s)
- S. E. Walker
- Institute of Chemical Sciences
- School of Engineering and Physical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - C. J. C. Lamb
- Institute of Chemical Sciences
- School of Engineering and Physical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - N. A. Beattie
- Institute of Chemical Sciences
- School of Engineering and Physical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - P. Nikodemiak
- Institute of Chemical Sciences
- School of Engineering and Physical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - A.-L. Lee
- Institute of Chemical Sciences
- School of Engineering and Physical Sciences
- Heriot-Watt University
- Edinburgh
- UK
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37
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Walker SE, Jordan-Hore JA, Johnson DG, Macgregor SA, Lee AL. Palladium-catalyzed direct C-H functionalization of benzoquinone. Angew Chem Int Ed Engl 2014; 53:13876-9. [PMID: 25302965 PMCID: PMC4502976 DOI: 10.1002/anie.201408054] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Indexed: 11/12/2022]
Abstract
A direct Pd-catalyzed C-H functionalization of benzoquinone (BQ) can be controlled to give either mono- or disubstituted BQ, including the installation of two different groups in a one-pot procedure. BQ can now be directly functionalized with aryl, heteroaryl, cycloalkyl, and cycloalkene groups and, moreover, the reaction is conducted in environmentally benign water or acetone as solvents.
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Affiliation(s)
- Sarah E Walker
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS (UK)
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38
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Walker SE, Jordan-Hore JA, Johnson DG, Macgregor SA, Lee AL. Palladium-Catalyzed Direct CH Functionalization of Benzoquinone. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408054] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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39
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Jin W, Wong WT, Law GL. A Simple and Direct Method for the Palladium-Catalyzed Oxidative Coupling of Unactivated Allylarenes with Classic Arenes. ChemCatChem 2014. [DOI: 10.1002/cctc.201402075] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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40
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Kim YW, Georg GI. Boron-Heck reaction of cyclic enaminones: regioselective direct arylation via oxidative palladium(II) catalysis. Org Lett 2014; 16:1574-7. [PMID: 24650204 PMCID: PMC3993847 DOI: 10.1021/ol500105d] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
An oxidative boron-Heck reaction of cyclic enaminones with arylboronic acids is reported. This protocol provides a regioselective arylation at the C6 position of cyclic enaminones. When an N-carbamylated cyclic enaminone was employed, a switch to a conjugate addition reaction occurred in the presence of acid.
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Affiliation(s)
- Yong Wook Kim
- Department of Chemistry, Department of Medicinal Chemistry, and the Institute for Therapeutic Discovery and Development, University of Minnesota , 717 Delaware Street SE, Minneapolis, Minnesota 55414, United States
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41
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Shen R, Kusakabe T, Takahashi K, Kato K. Pd(ii)-catalyzed ligand controlled synthesis of methyl 1-benzyl-1H-indole-3-carboxylates and bis(1-benzyl-1H-indol-3-yl)methanones. Org Biomol Chem 2014; 12:4602-9. [DOI: 10.1039/c4ob00714j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A simple change of ligand and solvent allows controlled, effective switching between cyclization–carbonylation and cyclization–carbonylation–cyclization-coupling (CCC-coupling) reactions.
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42
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He Z, Wibbeling B, Studer A. Oxidative Heck Coupling of Allylic Amines with 2,2,6,6‐Tetramethylpiperidine‐
N
‐oxyl (TEMPO) as Oxidant for the Preparation of Tetrasubstituted Alkenes. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300846] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Zhiheng He
- Westfälische Wilhems‐University, Institute of Organic Chemistry, Corrensstrasse 40, 48149 Münster, Germany, Fax: (+49)‐251‐833‐6523
| | - Birgit Wibbeling
- Westfälische Wilhems‐University, Institute of Organic Chemistry, Corrensstrasse 40, 48149 Münster, Germany, Fax: (+49)‐251‐833‐6523
| | - Armido Studer
- Westfälische Wilhems‐University, Institute of Organic Chemistry, Corrensstrasse 40, 48149 Münster, Germany, Fax: (+49)‐251‐833‐6523
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43
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Li B, Ma J, Xie W, Song H, Xu S, Wang B. Ruthenium-Catalyzed Regioselective C2 Alkenylation of Indoles and Pyrroles via C–H Bond Functionalization. J Org Chem 2013; 78:9345-53. [DOI: 10.1021/jo401579m] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Bin Li
- State
Key Laboratory of Element-Organic Chemistry, Synergetic Innovation
Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Jianfeng Ma
- State
Key Laboratory of Element-Organic Chemistry, Synergetic Innovation
Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Weijia Xie
- State
Key Laboratory of Element-Organic Chemistry, Synergetic Innovation
Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Haibin Song
- State
Key Laboratory of Element-Organic Chemistry, Synergetic Innovation
Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Shansheng Xu
- State
Key Laboratory of Element-Organic Chemistry, Synergetic Innovation
Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Baiquan Wang
- State
Key Laboratory of Element-Organic Chemistry, Synergetic Innovation
Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- State
Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
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