1
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Chen P, Zhang MM, Rao L, Li YH, Jia Y, Tan Y, Xiao WJ, Lu LQ. Access to N-α-quaternary chiral morpholines via Cu-catalyzed asymmetric propargylic amination/desymmetrization strategy. Sci Bull (Beijing) 2024:S2095-9273(24)00564-4. [PMID: 39183108 DOI: 10.1016/j.scib.2024.08.005] [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: 03/12/2024] [Revised: 06/17/2024] [Accepted: 08/02/2024] [Indexed: 08/27/2024]
Abstract
Morpholines are widespread in many biologically and catalytically active agents, thus being an important aim of pharmaceutical and synthetic chemists. However, efficient strategies for the catalytic asymmetric synthesis of chiral morpholines bearing crowded stereogenic centers still remain elusive. Herein, we disclose a Cu-catalyzed asymmetric propargylic amination/desymmetrization strategy to help resolve this challenge. As a result, two kinds of structurally various chiral morpholines bearing rich functional groups and N-α-quaternary stereocenters were produced with high efficiency and selectivity (42 examples, up to 91 % yield, 97:3 er and > 19:1 dr). In addition, a series of transformations were performed to demonstrate the synthetic utility of this methodology. In particular, a hit compound for new antitumor drugs was identified through cellular evaluation. Furthermore, mechanistic investigations reveal that, hydrogen bonding in the key copper-allenylidene intermediate together with π-π stacking aids remote enantioinduction.
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Affiliation(s)
- Peng Chen
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction (Ministry of Education), College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Mao-Mao Zhang
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction (Ministry of Education), College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Li Rao
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction (Ministry of Education), College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Yuan-Heng Li
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Biology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Yue Jia
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction (Ministry of Education), College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Ying Tan
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Biology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Wen-Jing Xiao
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction (Ministry of Education), College of Chemistry, Central China Normal University, Wuhan 430079, China; Wuhan Institute of Photochemistry and Technology, Wuhan 430082, China
| | - Liang-Qiu Lu
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction (Ministry of Education), College of Chemistry, Central China Normal University, Wuhan 430079, China; Wuhan Institute of Photochemistry and Technology, Wuhan 430082, China; State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China; School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China.
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2
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Martínez de Sarasa Buchaca M, Gaona MA, Sánchez-Barba LF, Garcés A, Rodríguez AM, Rodríguez-Diéguez A, de la Cruz-Martínez F, Castro-Osma JA, Lara-Sánchez A. Zinc-Catalyzed Cyclization of Alkynyl Derivatives: Substrate Scope and Mechanistic Insights. Inorg Chem 2024; 63:13875-13885. [PMID: 39011646 PMCID: PMC11289758 DOI: 10.1021/acs.inorgchem.4c00832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 07/04/2024] [Accepted: 07/05/2024] [Indexed: 07/17/2024]
Abstract
Novel alkyl zinc complexes supported by acetamidate/thioacetamidate heteroscorpionate ligands have been successfully synthesized and characterized. These complexes exhibited different coordination modes depending on the electronic and steric effects of the acetamidate/thioacetamidate moiety. Their catalytic activity has been tested toward the hydroelementation reactions of alkynyl alcohol/acid substrates, affording the corresponding enol ether/unsaturated lactone products under mild reaction conditions. Kinetic studies have been performed and confirmed that reactions are first-order in [catalyst] and zero-order in [alkynyl substrate]. DFT calculations supported a reaction mechanism through the formation of the catalytically active species, an alkoxide-zinc intermediate, by a protonolysis reaction of the Zn-alkyl bond with the alcohol group of the substrate. Based on the experimental and theoretical results, a catalytic cycle has been proposed.
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Affiliation(s)
- Marc Martínez de Sarasa Buchaca
- Universidad
de Castilla-La Mancha, Departamento de Química Inorgánica,
Orgánica y Bioquímica-Centro de Innovación en
Química Avanzada (ORFEO−CINQA), Facultad de Ciencias
y Tecnologías Químicas, Instituto
Regional de Investigación Científica Aplicada-IRICA, Ciudad Real 13071, Spain
| | - Miguel A. Gaona
- Universidad
de Castilla-La Mancha, Departamento de Química Inorgánica,
Orgánica y Bioquímica-Centro de Innovación en
Química Avanzada (ORFEO−CINQA), Facultad de Ciencias
y Tecnologías Químicas, Instituto
Regional de Investigación Científica Aplicada-IRICA, Ciudad Real 13071, Spain
| | - Luis F. Sánchez-Barba
- Departamento
de Biología y Geología, Física y Química
Inorgánica, Universidad Rey Juan
Carlos, Móstoles 28933, Spain
| | - Andrés Garcés
- Departamento
de Biología y Geología, Física y Química
Inorgánica, Universidad Rey Juan
Carlos, Móstoles 28933, Spain
| | - Ana M. Rodríguez
- Universidad
de Castilla-La Mancha, Departamento de Química Inorgánica,
Orgánica y Bioquímica-Centro de Innovación en
Química Avanzada (ORFEO−CINQA), Facultad de Ciencias
y Tecnologías Químicas, Instituto
Regional de Investigación Científica Aplicada-IRICA, Ciudad Real 13071, Spain
| | - Antonio Rodríguez-Diéguez
- Departamento
de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Granada 18071, Spain
| | - Felipe de la Cruz-Martínez
- Departamento
de Química Inorgánica, Orgánica y Bioquímica-Centro
de Innovación en Química Avanzada (ORFEO−CINQA),
Facultad de Farmacia, Universidad de Castilla-La
Mancha, Albacete 02071, Spain
| | - José A. Castro-Osma
- Departamento
de Química Inorgánica, Orgánica y Bioquímica-Centro
de Innovación en Química Avanzada (ORFEO−CINQA),
Facultad de Farmacia, Universidad de Castilla-La
Mancha, Albacete 02071, Spain
| | - Agustín Lara-Sánchez
- Universidad
de Castilla-La Mancha, Departamento de Química Inorgánica,
Orgánica y Bioquímica-Centro de Innovación en
Química Avanzada (ORFEO−CINQA), Facultad de Ciencias
y Tecnologías Químicas, Instituto
Regional de Investigación Científica Aplicada-IRICA, Ciudad Real 13071, Spain
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3
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Gorad SS, Ghorai P. Organocatalytic Desymmetric Double Aza-Michael Addition Cascade: Enantioselective Synthesis of Fused Morpholines. Org Lett 2024; 26:5571-5576. [PMID: 38921656 DOI: 10.1021/acs.orglett.4c01988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
Double aza-Michael addition (DAM) has become an emerging strategy for the construction of two carbon-nitrogen bonds in a single step, which can significantly simplify the synthesis of N-heterocycles. Hitherto, their asymmetric catalytic genre remains unattempted. Herein, we describe the judicious design of an organocatalytic enantioselective desymmetric double aza-Michael addition cascade to access a series of functionalized fused morpholines with excellent yields and diastereo- and enantioselectivities. A one-pot telescopic synthesis was demonstrated for a bridged triheterocyclic compound. In addition, scale-up synthesis and various attractive postsynthetic modifications of the title products amplify the significance of the current methodology.
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Affiliation(s)
- Sachin S Gorad
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal-462066, India
| | - Prasanta Ghorai
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal-462066, India
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4
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Xu Y, Liu D, Gao F, Li S, Zhang X, Wang L, Yang D. Harnessing Dpp-Imine as a Powerful Achiral Cocatalyst to Dramatically Increase the Efficiency and Stereoselectivity in a Magnesium-Mediated Oxa-Michael Reaction. JACS AU 2024; 4:164-176. [PMID: 38274262 PMCID: PMC10806778 DOI: 10.1021/jacsau.3c00584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 12/06/2023] [Accepted: 12/11/2023] [Indexed: 01/27/2024]
Abstract
Dpp-imines are classic model substrates for synthetic method studies. Here, we disclose their powerful use as achiral coligands in metal-catalyzed reactions. It is highly interesting to find that the Dpp-imine can not only act as powerful ligand to create excellent chiral pockets with magnesium complexes but also, more importantly, this coligand can dramatically enhance the catalytic ability of the metal catalyst. The underlying reaction mechanism was extensively explored by conducting a series of experiments, including 31P NMR studies of the coordination complex between the Dpp-imine coligand and magnesium complexes, ESI capture results, multiple control experiments, studies and comparison of different coligands, 1H NMR studies on the relationship between the substrate and Dpp-imine coligand, as well as the relationship between the substrate and the full complexes. Furthermore, DFT calculation provided valuable insights in the role of the imine additive and demonstrated that adding the Dpp-imine coligand in the magnesium catalyst can switch the deprotonation/nucleophilic addition steps from a stepwise mechanism to a concerted process during the oxa-cyclization reaction. The crucial factors responsible for the excellent enantioselectivity and enhanced reaction efficiency brought by Dpp-imine have been extracted from the calculation model. These mechanistic experiments and DFT calculation data clearly disclose and prove the powerful and interesting functions of the Dpp-imine coligand, which also direct a novel application of this type of active imine as useful ligands in metal-catalyzed asymmetric reactions.
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Affiliation(s)
- Yingfan Xu
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, School
of Basic Medical Sciences & Research Unit of Peptide Science,
2019RU066, Lanzhou University, Lanzhou 730000, Gansu, P. R. China
| | - Dan Liu
- Institute
of Systems and Physical Biology, Shenzhen
Bay Laboratory, Shenzhen 518055, P. R. China
| | - Feiyun Gao
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, School
of Basic Medical Sciences & Research Unit of Peptide Science,
2019RU066, Lanzhou University, Lanzhou 730000, Gansu, P. R. China
| | - Shixin Li
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, School
of Basic Medical Sciences & Research Unit of Peptide Science,
2019RU066, Lanzhou University, Lanzhou 730000, Gansu, P. R. China
| | - Xiaoyong Zhang
- Institute
of Systems and Physical Biology, Shenzhen
Bay Laboratory, Shenzhen 518055, P. R. China
| | - Linqing Wang
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, School
of Basic Medical Sciences & Research Unit of Peptide Science,
2019RU066, Lanzhou University, Lanzhou 730000, Gansu, P. R. China
| | - Dongxu Yang
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, School
of Basic Medical Sciences & Research Unit of Peptide Science,
2019RU066, Lanzhou University, Lanzhou 730000, Gansu, P. R. China
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5
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Liu X, Sun Y, Hong S, Ji X, Gao W, Yuan H, Zhang Y, Lei B, Tang L, Fan Z. Synthesis of fungicidal morpholines and isochromenopyridinones via acid-catalyzed intramolecular reactions of isoindolinones. Org Biomol Chem 2023; 22:120-125. [PMID: 38050463 DOI: 10.1039/d3ob01717f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
Acid-catalyzed intramolecular cyclization or rearrangement of isoindolinone derivatives is described. 3-Hydroxy/ethoxy-3,4-dihydro-6H-[1,4]-oxazino-[3,4-a]-isoindol-6-ones are obtained in moderate to good yields. Further acid-catalyzed intramolecular rearrangement reactions give 6H-isochromeno-[4,3-b]-pyridin-6-ones. The mild reaction conditions with convenient starting materials show broad substrate scope and provide the target compounds as novel pesticide leads with good fungicidal or systemical acquired resistance activities.
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Affiliation(s)
- Xiaoyu Liu
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Yaru Sun
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Shuang Hong
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Xia Ji
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Wei Gao
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Haolin Yuan
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Yue Zhang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Bin Lei
- Pesticide Production and Experiment Center, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
| | - Liangfu Tang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Zhijin Fan
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
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6
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Mondal B, Chen H, Maiti R, Wang H, Cai H, Mou C, Hao L, Chai H, Chi YR. Carbene-Catalyzed Direct O-Functionalization of Ketone: Atroposelective Access to Non- C2-Symmetric Binaphthyls. Org Lett 2023; 25:8252-8257. [PMID: 37955414 DOI: 10.1021/acs.orglett.3c03141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Disclosed here is NHC-catalyzed direct intermolecular trapping of the ketone oxygen atom with the acyl azolium intermediate. The overall reaction is a dynamic kinetic resolution process that converts ketone to the corresponding enol ester with well-controlled axial chirality. Our reaction eventually affords non-C2-symmetric binaphthyl derivatives with important applications, such as in the area of asymmetric catalysis.
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Affiliation(s)
- Bivas Mondal
- School of Chemistry, Chemical Engineering, and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Hang Chen
- School of Chemistry, Chemical Engineering, and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Rakesh Maiti
- School of Chemistry, Chemical Engineering, and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Hongling Wang
- School of Chemistry, Chemical Engineering, and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Hui Cai
- National Key Laboratory of Green Pesticide, Guizhou University, Guiyang, Guizhou 550025, People's Republic of China
| | - Chengli Mou
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou 550025, People's Republic of China
| | - Lin Hao
- School of Chemistry, Chemical Engineering, and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Huifang Chai
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou 550025, People's Republic of China
| | - Yonggui Robin Chi
- National Key Laboratory of Green Pesticide, Guizhou University, Guiyang, Guizhou 550025, People's Republic of China
- School of Chemistry, Chemical Engineering, and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
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7
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Li XZ, He YP, Wu H. Zinc chloride-catalyzed cyclizative 1,2-rearrangement enables facile access to morpholinones bearing aza-quaternary carbons. Commun Chem 2023; 6:216. [PMID: 37805578 PMCID: PMC10560277 DOI: 10.1038/s42004-023-01016-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 09/29/2023] [Indexed: 10/09/2023] Open
Abstract
Morpholines and morpholinones are important building blocks in organic synthesis and pharmacophores in medicinal chemistry, however, C3-disubstituted morpholines/morpholinones are extremely difficult to access. Here we show the ZnCl2-catalyzed cyclizative 1,2-rearrangement for the efficient synthesis of morpholinones bearing aza-quaternary stereocenters. A series of structurally diverse C3-disubstituted morpholin-2-ones which are difficultly accessible by existing methods were efficiently constructed from readily available two achiral linear compounds. Notably, mechanistic studies reveal that this reaction proceeds via an unusual sequence of direct formal [4 + 2] heteroannulation regioselectively delivering specific α-iminium/imine hemiacetals followed by a 1,2-esters or amides shift process, which is different from the reported mechanism of the aza-benzilic ester rearrangements.
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Affiliation(s)
- Xing-Zi Li
- Shanghai Frontiers Science Center for Drug Target Identification and Delivery, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmaceutical Sciences, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai, 200240, China
| | - Yu-Ping He
- Shanghai Frontiers Science Center for Drug Target Identification and Delivery, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmaceutical Sciences, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai, 200240, China
| | - Hua Wu
- Shanghai Frontiers Science Center for Drug Target Identification and Delivery, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmaceutical Sciences, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai, 200240, China.
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8
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Liu K, Wang Z, Künzel AN, Layh M, Studer A. Regioselective Formal β-Allylation of Carbonyl Compounds Enabled by Cooperative Nickel and Photoredox Catalysis. Angew Chem Int Ed Engl 2023; 62:e202303473. [PMID: 37141023 DOI: 10.1002/anie.202303473] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 05/05/2023]
Abstract
The Tsuji-Trost reaction between carbonyl compounds and allylic precursors has been widely used in the synthesis of natural products and pharmaceutical compounds. As the α-C-H bond is far more acidic than the β-C-H bond, carbonyl compounds undergo highly regioselective allylation at the α-position and their β-allylation is therefore highly challenging. This innate α-reactivity conversely hampers diversity, especially if the corresponding β-allylation product is targeted. Herein, we present a formal intermolecular β-C-C bond formation reaction of a broad range of aldehydes and ketones with different allyl electrophiles through cooperative nickel and photoredox catalysis. β-Selectivity is achieved via initial transformation of the aldehydes and ketones to their corresponding silyl enol ethers. The overall transformation features mild conditions, excellent regioselectivity, wide functional group tolerance and high reaction efficiency. The introduced facile and regioselective β-allylation of carbonyl compounds proceeding through cooperative catalysis allows the preparation of valuable building blocks that are difficult to access from aldehydes and ketones using existing methodology.
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Affiliation(s)
- Kun Liu
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraße 40, 48149, Münster, Germany
| | - Zhe Wang
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraße 40, 48149, Münster, Germany
| | - Augustinus N Künzel
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraße 40, 48149, Münster, Germany
| | - Marcus Layh
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität, Corrensstraße 28/30, 48149, Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraße 40, 48149, Münster, Germany
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9
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Kotipalli R, Babu US, Nanubolu JB, Reddy MS. Rh-catalyzed chemo-, stereo- and regioselective C-H cascade annulation of indolyloxopropanenitriles for pyranoindoles. Chem Commun (Camb) 2023; 59:10137-10140. [PMID: 37503886 DOI: 10.1039/d3cc02762g] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Selective annulations of alkynes represent a powerful tool for constructing multicyclic scaffolds while installing desired substitution patterns with precision. Herein, we report a Rh-catalyzed unique annulation of indolyl oxopropanenitrile with hydroxy-alkynoates to access pyranoindole cyclic motifs, featuring enol oxygen as a rare chemoselective reactive terminal. The reaction proceeds via a five-membered oxy-rodacycle through C-H activation by a rhodium complex guided by enolic- and propargyloxy dual co-ordination to enable a regio- and stereoselective modular assembly.
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Affiliation(s)
- Ramesh Kotipalli
- Department of OSPC, CSIR-Indian Institute of Chemical Technology, Habsiguda, Hyderabad 500007, India.
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | - Undamatla Suri Babu
- Department of OSPC, CSIR-Indian Institute of Chemical Technology, Habsiguda, Hyderabad 500007, India.
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | | | - Maddi Sridhar Reddy
- Department of OSPC, CSIR-Indian Institute of Chemical Technology, Habsiguda, Hyderabad 500007, India.
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India
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10
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Pan B, Qian X, Zhang Y, Jiang L, Cao R, Qiu L. Iridium-Catalyzed Intramolecular Asymmetric Allylic Etherification of Pyrimidinemethanols: Enantioselective Construction of Multifunctionalized Pyrimidine-Fused Oxazepines. Org Lett 2023. [PMID: 37450016 DOI: 10.1021/acs.orglett.3c01962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
An iridium-catalyzed intramolecular asymmetric allylic etherification of pyrimidinemethanols is described. In the presence of chiral-bridged biphenyl phosphoramidite ligand L3 and triethylborane, this process provided a class of novel pyrimidine-fused oxazepanes in up to 99% yield with 99.5% enantiomeric excess. The work addresses the challenge of insufficient nucleophilicity of aliphatic alcohols for allyl substitution and indicates the vital value of chiral-bridged biphenyl phosphoramidites. Various multifunctionalized transformations of the products further demonstrate the robust synthetic utility of this methodology.
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Affiliation(s)
- Bendu Pan
- School of Chemistry, IGCME, Guangdong Key Lab of Chiral Molecules and Drug Discovery, Sun Yat-sen University, Guangzhou 510006, China
| | - Xu Qian
- School of Chemistry, IGCME, Guangdong Key Lab of Chiral Molecules and Drug Discovery, Sun Yat-sen University, Guangzhou 510006, China
| | - Yaqi Zhang
- School of Chemistry, IGCME, Guangdong Key Lab of Chiral Molecules and Drug Discovery, Sun Yat-sen University, Guangzhou 510006, China
| | - Long Jiang
- Instrumental Analysis and Research Centre, Sun Yat-sen University, Guangzhou 510275, China
| | - Rihui Cao
- School of Chemistry, IGCME, Guangdong Key Lab of Chiral Molecules and Drug Discovery, Sun Yat-sen University, Guangzhou 510006, China
| | - Liqin Qiu
- School of Chemistry, IGCME, Guangdong Key Lab of Chiral Molecules and Drug Discovery, Sun Yat-sen University, Guangzhou 510006, China
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11
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Singh B, Kumar M, Goswami G, Verma I, Ghorai MK. Ring-Opening Cyclization (ROC) of Aziridines with Propargyl Alcohols: Synthesis of 3,4-Dihydro-2 H-1,4-oxazines. J Org Chem 2023; 88:4504-4518. [PMID: 36972376 DOI: 10.1021/acs.joc.2c03093] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Activated aziridines react with propargyl alcohols in the presence of Zn(OTf)2 as the Lewis acid catalyst following an SN2-type ring-opening mechanism to furnish the corresponding amino ether derivatives. Those amino ethers further undergo intramolecular hydroamination via 6-exo-dig cyclization in the presence of Zn(OTf)2 as the catalyst and tetrabutylammonium triflate salt as an additive under one-pot two-step reaction conditions. However, for nonracemic examples, ring-opening and cyclization steps were conducted under two-pot conditions. The reaction works well without any additional solvents. The final 3,4-dihydro-2H-1,4-oxazine products were obtained with 13 to 84% yield and 78 to 98% enantiomeric excess (for nonracemic examples).
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Affiliation(s)
- Bharat Singh
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Manish Kumar
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Gaurav Goswami
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Indresh Verma
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Manas K Ghorai
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
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12
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Halimehjani AZ, Breit B. Rhodium-catalyzed diastereoselective synthesis of highly substituted morpholines from nitrogen-tethered allenols. Chem Commun (Camb) 2023; 59:4376-4379. [PMID: 36946522 DOI: 10.1039/d3cc00151b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Rhodium-catalyzed intramolecular cyclization of nitrogen-tethered allenols was investigated for the synthesis of functionalized morpholines. By using this strategy, various N-protected 2,5- and 2,6-disubstituted as well as 2,3,5- and 2,5,6-trisubstituted morpholines were obtained via an atom-economic pathway with high to excellent yields, diastereo- and enantioselectivities (up to 99% yield, up to >99 : 1 dr and up to >99.9 ee). The utilities of the synthesized morpholines in ozonolysis, hydration, metathesis and epoxidation reactions were also investigated.
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Affiliation(s)
- A Ziyaei Halimehjani
- Department of Chemistry, Sharif University of Technology, P.O. Box 11155-9516, Tehran, Iran.
- Faculty of Chemistry, Kharazmi University, 49 Mofateh Street, P. O. Box 15719-14911, Tehran, Iran.
| | - B Breit
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg, Albert strasse 21, Freiburg im Breisgau, 79104, Germany.
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13
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Ghosh S, Changotra A, Petrone DA, Isomura M, Carreira EM, Sunoj RB. Role of Noncovalent Interactions in Inducing High Enantioselectivity in an Alcohol Reductive Deoxygenation Reaction Involving a Planar Carbocationic Intermediate. J Am Chem Soc 2023; 145:2884-2900. [PMID: 36695526 DOI: 10.1021/jacs.2c10975] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The involvement of planar carbocation intermediates is generally considered undesirable in asymmetric catalysis due to the difficulty in gaining facial control and their intrinsic stability issues. Recently, suitably designed chiral catalyst(s) have enabled a guided approach of nucleophiles to one of the prochiral faces of carbocations affording high enantiocontrol. Herein, we present the vital mechanistic insights from our comprehensive density functional theory (B3LYP-D3) study on a chiral Ir-phosphoramidite-catalyzed asymmetric reductive deoxygenation of racemic tertiary α-substituted allenylic alcohols. The catalytic transformation relies on the synergistic action of a phosphoramidite-modified Ir catalyst and Bi(OTf)3, first leading to the formation of an Ir-π-allenyl carbocation intermediate through a turn-over-determining SN1 ionization, followed by a face-selective hydride transfer from a Hantzsch ester analogue to yield an enantioenriched product. Bi(OTf)3 was found to promote a significant number of ionic interactions as well as noncovalent interactions (NCIs) with the catalyst and the substrates (allenylic alcohol and Hantzsch ester), thus providing access to a lower energy route as compared to the pathways devoid of Bi(OTf)3. In the nucleophilic addition, the chiral induction was found to depend on the number and efficacy of such key NCIs. The curious case of reversal of enantioselectivity, when the α-substituent of the allenyl alcohol is changed from methyl to cyclopropyl, was identified to originate from a change in mechanism from an enantioconvergent pathway (α-methyl) to a dynamic kinetic asymmetric transformation (α-cyclopropyl). These molecular insights could lead to newer strategies to tame tertiary carbocations in enantioselective reactions using suitable combinations of catalysts and additives.
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Affiliation(s)
- Supratim Ghosh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Avtar Changotra
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - David A Petrone
- Department of Chemistry and Applied Biosciences, Laboratory of Organic Chemistry, ETH Zürich, 8093 Zürich, Switzerland.,Department of Process Research & Development, Merck & Co., Inc., MRL, Rahway, New Jersey 07065, United States
| | - Mayuko Isomura
- Department of Chemistry and Applied Biosciences, Laboratory of Organic Chemistry, ETH Zürich, 8093 Zürich, Switzerland
| | - Erick M Carreira
- Department of Chemistry and Applied Biosciences, Laboratory of Organic Chemistry, ETH Zürich, 8093 Zürich, Switzerland
| | - Raghavan B Sunoj
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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14
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Duchamp E, Devin R, Aguiar PM, Gaucherand A, Hanessian S. Polygonapholine: A Total Synthesis Questions the Identity for the Purported Structure of the Natural Product. J Org Chem 2022; 87:15713-15718. [PMID: 36349937 DOI: 10.1021/acs.joc.2c02339] [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
Polygonapholine was isolated in 1997 from the Polygonatum alte-lobatum rhizome. Based on spectroscopic data, it was assigned a structure comprising an unusual cis-2,6-disubstituted bis-aryl morpholine ring to which is attached a (Z)-4-hydroxycinnamate as an amide and an (E)-4-hydroxycinnamate as an ester. Being a meso compound, polygonapholine should not exhibit an optical rotation as reported. A total synthesis of the purported morpholine alkaloid presented herein reveals discrepancies between the synthetic and the natural product casting doubt on the originally proposed structure.
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Affiliation(s)
- Edouard Duchamp
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Succ., Centre-ville, Montréal, Québec, Canada, H3C 3J7
| | - Rory Devin
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Succ., Centre-ville, Montréal, Québec, Canada, H3C 3J7
| | - Pedro M Aguiar
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Succ., Centre-ville, Montréal, Québec, Canada, H3C 3J7
| | - Arthur Gaucherand
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Succ., Centre-ville, Montréal, Québec, Canada, H3C 3J7
| | - Stephen Hanessian
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Succ., Centre-ville, Montréal, Québec, Canada, H3C 3J7
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15
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Mitra S, Sarkar R, Chakrabarty A, Mukherjee S. Hydroxy-directed iridium-catalyzed enantioselective formal β-C(sp 2)-H allylic alkylation of α,β-unsaturated carbonyls. Chem Sci 2022; 13:12491-12497. [PMID: 36382287 PMCID: PMC9629034 DOI: 10.1039/d2sc03966d] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 10/12/2022] [Indexed: 02/12/2024] Open
Abstract
Hydroxy-directed iridium-catalyzed enantioselective formal β-C(sp2)-H allylic alkylation of kojic acid and structurally related α,β-unsaturated carbonyl compounds is developed. This reaction, catalyzed by an Ir(i)/(P,olefin) complex, utilizes the nucleophilic character of α-hydroxy α,β-unsaturated carbonyls, to introduce an allyl group at its β-position in a branched-selective manner in good to excellent yield with uniformly high enantioselectivity (up to >99.9 : 0.1 er). To the best of our knowledge, this report represents the first example of the use of kojic acid in a transition metal catalyzed highly enantioselective transformation.
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Affiliation(s)
- Sankash Mitra
- Department of Organic Chemistry, Indian Institute of Science Bangalore 560 012 India +91-80-2360-0529 +91-80-2293-2850
| | - Rahul Sarkar
- Department of Organic Chemistry, Indian Institute of Science Bangalore 560 012 India +91-80-2360-0529 +91-80-2293-2850
| | - Aditya Chakrabarty
- Department of Organic Chemistry, Indian Institute of Science Bangalore 560 012 India +91-80-2360-0529 +91-80-2293-2850
| | - Santanu Mukherjee
- Department of Organic Chemistry, Indian Institute of Science Bangalore 560 012 India +91-80-2360-0529 +91-80-2293-2850
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16
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Hu F, Chu Y, Cao Z, Li Y, Hui XP. Enantioselective Synthesis of Functionalized Tetrahydropyridines through Iridium-Catalyzed Formal [5+1] Annulation. Org Lett 2022; 24:6945-6950. [PMID: 36129810 DOI: 10.1021/acs.orglett.2c02750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient iridium-catalyzed asymmetric formal [5+1] annulation by in situ generation of enamines as N-nucleophiles for the synthesis of tetrahydropyridine derivatives is disclosed. The methodology offers direct access to a wide variety of chiral tetrahydropyridine derivatives in moderate to good yields and excellent enantioselectivity.
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Affiliation(s)
- Fang Hu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yunpeng Chu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Zhengqiang Cao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yucheng Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xin-Ping Hui
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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17
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Ding L, Song H, Zheng C, You SL. Enantioselective Synthesis of Medium-Sized-Ring Lactones via Iridium-Catalyzed Z-Retentive Asymmetric Allylic Substitution Reaction. J Am Chem Soc 2022; 144:4770-4775. [PMID: 35266702 DOI: 10.1021/jacs.2c01103] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Medium-sized rings are important structural units, but their synthesis, especially in a highly enantioselective manner, has been a great challenge. Herein we report an enantioselective synthesis of medium-sized-ring lactones by an iridium-catalyzed Z-retentive asymmetric allylic substitution reaction. The reaction features mild conditions and a broad substrate scope. Various eight- to 11-membered-ring lactones can be afforded in moderate to excellent yields (up to 88%) and excellent enantioselectivity (up to 99% ee). The utilization of both Z-allyl precursors and an Ir catalyst is critical for the medium-sized-ring formation.
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Affiliation(s)
- Lu Ding
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China.,School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
| | - Hao Song
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China.,School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
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18
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Roy TK, Gorad SS, Ghorai P. Chiral Squaramide Catalyzed Asymmetric Spiroketalization toward Aromatic [6,5] Spiroketals. Org Lett 2022; 24:1889-1894. [PMID: 35238574 DOI: 10.1021/acs.orglett.2c00074] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein is disclosed an efficient enantio- and diastereoselective spiroketalization of aromatic ketone tethered to ortho-homoformyl and enone moiety via in situ enol formation using quinine derived squaramide organocatalyst to access aromatic [6,5] spiroketals with complete atom economy. Furthermore, aromatic spiroketals undergo Brønsted acid catalyzed Piancatelli type rearrangement to provide dihydronaphtho[1,2-b]furans with retention of the enantioselectivities.
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Affiliation(s)
- Tarun Kumar Roy
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal 462066, India
| | - Sachin S Gorad
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal 462066, India
| | - Prasanta Ghorai
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal 462066, India
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19
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Hu F, Zhang H, Chu Y, Hui XP. Efficiently enantioselective synthesis of pyrazolines and isoxazolines enabled by iridium-catalyzed intramolecular allylic substitution reactions. Org Chem Front 2022. [DOI: 10.1039/d2qo00147k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient Ir-catalyzed enantioselective intramolecular allylic substitution reaction of 2-tosylhydrazono or hydroxyimino carbonates for the synthesis of pyrazolines and isoxazolines has been achieved. The products were obtained in high yield...
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20
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Kang X, Qian C, Yang H, Shi J, Claverie J, Tang W. Protecting-group-free enantioselective tandem allylic substitution of o-phenylenediamines and o-aminophenols. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.01.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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21
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Zhong H, Ding T, Guo Q, Tian Z, Yu P, Jiang X. Accessing Chiral 2,2-Disubstituted Morpholines via Organocatalytic Enantioselective Chlorocycloetherification. Org Chem Front 2022. [DOI: 10.1039/d2qo00390b] [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
Chiral morpholine is an important scaffold in organic synthesis and a pharmacophore in medicinal chemistry. However, catalytic enantioselective procedure for the construction of morpholine remains sparse. We report herein a...
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22
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Soklou KE, Marzag H, Vallée B, Routier S, Plé K. Synthesis of Heterospirocycles through Gold‐(I) Catalysis: Useful Building Blocks for Medicinal Chemistry. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Kossi Efouako Soklou
- Institut de Chimie Organique et Analytique University of Orléans, CNRS UMR 7311 45067 Orléans Cedex 2 France
| | - Hamid Marzag
- Institut de Chimie Organique et Analytique University of Orléans, CNRS UMR 7311 45067 Orléans Cedex 2 France
| | - Béatrice Vallée
- Centre de Biophysique Moléculaire, CNRS, UPR 4301 University of Orléans and INSERM 45071 Orléans Cedex 2 France
| | - Sylvain Routier
- Institut de Chimie Organique et Analytique University of Orléans, CNRS UMR 7311 45067 Orléans Cedex 2 France
| | - Karen Plé
- Institut de Chimie Organique et Analytique University of Orléans, CNRS UMR 7311 45067 Orléans Cedex 2 France
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23
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Nanda SK, Mallik R. Transition Metal-Catalyzed Hydroalkoxylation of Alkynes: An Overview. Chemistry 2021; 27:15571-15604. [PMID: 34343374 DOI: 10.1002/chem.202102194] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Indexed: 01/12/2023]
Abstract
Oxygen-bearing motifs, mainly the congener heterocycles are ubiquitous due to their presence in various natural products and bioactive scaffolds. Although in literature, several strategies have been developed for their synthesis, hydroalkoxylation of alkynes has come forward as a method of choice and has been used extensively. In particular, hydroalkoxylation of alkynes has gained enormous attention from the synthetic community due to the rapid access to a very useful and reactive synthetic intermediate like 'enol ether'. Furthermore, to manifold the utility of these methods, reports have been developed elaborating the generation of 'enol ether' using hydroalkoxylation and their usage in various reactions in cascade or tandem manner. This review focuses on recent development on the hydroalkoxylation of alkynes for the synthesis of oxygen-containing entities.
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Affiliation(s)
- Santosh K Nanda
- Department of Chemistry, School of Applied Science, Centurion University of Technology and Management Paralakhemundi, Odisha, 761211, India
| | - Rosy Mallik
- Department of Chemistry, School of Applied Science, Centurion University of Technology and Management Paralakhemundi, Odisha, 761211, India
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24
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Sun Jang H, Kim SG. Asymmetric catalytic [3 + 3]-cycloaddition of γ-hydroxy-α,β-unsaturated ketones with azaoxyallyl cations. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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Affiliation(s)
- Santosh K. Nanda
- Department of chemistry School of Applied Science Centurion University of Technology and Management Paralakhemundi Odisha 761211 India
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26
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Wang J, Chen H, Kong L, Wang F, Lan Y, Li X. Enantioselective and Diastereoselective C–H Alkylation of Benzamides: Synergized Axial and Central Chirality via a Single Stereodetermining Step. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02450] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jinlei Wang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi’an 710062, China
| | - Haohua Chen
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China
| | - Lingheng Kong
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi’an 710062, China
| | - Fen Wang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi’an 710062, China
| | - Yu Lan
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China
| | - Xingwei Li
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi’an 710062, China
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27
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Zhao CY, Ji DW, Zheng H, He GC, Liu H, Hu YC, Chen QA. Pd-Catalyzed Redox Divergent Coupling of Ketones with Terpenols. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01488] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Chao-Yang Zhao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Ding-Wei Ji
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Hao Zheng
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Gu-Cheng He
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Heng Liu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Yan-Cheng Hu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Qing-An Chen
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
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28
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He YP, Wu H, Wang Q, Zhu J. Catalytic Enantioselective Synthesis of Morpholinones Enabled by Aza-Benzilic Ester Rearrangement. J Am Chem Soc 2021; 143:7320-7325. [PMID: 33955753 DOI: 10.1021/jacs.1c03915] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Chiral morpholinone is an important building block in organic synthesis and a pharmacophore in medicinal chemistry. However, catalytic enantioselective methods for the construction of this N,O-heterocycle remain scarce. We report herein a chiral phosphoric acid-catalyzed enantioselective synthesis of C3-substituted morpholinones from aryl/alkylglyoxals and 2-(arylamino)ethan-1-ols. The reaction proceeds through a domino [4 + 2] heteroannulation followed by a 1,2-aryl/alkyl shift of the resulting cyclic α-iminium hemiacetals. It represents formally an unprecedented asymmetric aza-benzilic ester rearrangement reaction. A concise synthesis of L-742,694, a neurokinin-1 receptor antagonist, featuring this reaction is documented.
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Affiliation(s)
- Yu-Ping He
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH5304, CH-1015 Lausanne, Switzerland
| | - Hua Wu
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH5304, CH-1015 Lausanne, Switzerland.,School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Qian Wang
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH5304, CH-1015 Lausanne, Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH5304, CH-1015 Lausanne, Switzerland
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29
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Sandmeier T, Carreira EM. Enantioselective Synthesis of Cyclic Nitrones by Chemoselective Intramolecular Allylic Alkylation of Oximes. Angew Chem Int Ed Engl 2021; 60:9913-9918. [PMID: 33555650 DOI: 10.1002/anie.202100150] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/04/2021] [Indexed: 12/14/2022]
Abstract
The enantio- and chemoselective iridium-catalyzed N-allylation of oximes is described for the first time. Intramolecular kinetic resolution provides access to cyclic nitrones and enantioenriched aliphatic allylic alcohols. Salient features of this transformation are its ability to employ E/Z-isomeric mixtures of oxime starting materials convergently and high functional group tolerance. The implementation of N-allylation/1,3-dipolar cycloaddition reaction sequences furnishes tricyclic isoxazolidines in highly enantio- and diastereoselective fashion. The synthetic utility of the approach is demonstrated by the efficient, formal synthesis of the marine natural product (+)-halichlorine.
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Affiliation(s)
- Tobias Sandmeier
- Laboratorium für Organische Chemie, HCI H335, Eidgenössische Technische Hochschule Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Erick M Carreira
- Laboratorium für Organische Chemie, HCI H335, Eidgenössische Technische Hochschule Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
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30
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Sandmeier T, Carreira EM. Enantioselective Synthesis of Cyclic Nitrones by Chemoselective Intramolecular Allylic Alkylation of Oximes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Tobias Sandmeier
- Laboratorium für Organische Chemie HCI H335 Eidgenössische Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Erick M. Carreira
- Laboratorium für Organische Chemie HCI H335 Eidgenössische Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
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31
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Sandmeier T, Carreira EM. Enantio- and Chemoselective Intramolecular Iridium-Catalyzed O-Allylation of Oximes. Org Lett 2021; 23:2643-2647. [PMID: 33749284 DOI: 10.1021/acs.orglett.1c00559] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A method for the enantio- and chemoselective iridium-catalyzed O-allylation of oximes is described. Kinetic resolution in an intramolecular setting provides enantioenriched oxime ethers and aliphatic allylic alcohols. The synthetic potential of the products generated with this method is showcased by their elaboration into a series of heterocyclic compounds and the formal synthesis of glycoprotein GP IIb-IIIa receptor antagonist (-)-roxifiban. Preliminary mechanistic experiments and computational data shed light on the remarkable chemoselectivity of the reaction.
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Affiliation(s)
- Tobias Sandmeier
- Eidgenössische Technische Hochschule (ETH) Zürich, Building HCI, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Erick M Carreira
- Eidgenössische Technische Hochschule (ETH) Zürich, Building HCI, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
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32
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Wan X, Sun M, Wang JY, Yu L, Wu Q, Zhang YC, Shi F. Regio- and enantioselective ring-opening reaction of vinylcyclopropanes with indoles under cooperative catalysis. Org Chem Front 2021. [DOI: 10.1039/d0qo00699h] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The title reaction has been established under the cooperative bimetallic catalysis of iridium and copper catalysts, which afforded indole C3-allylation products with branched selectivity in moderate yields and good enantioselectivities.
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Affiliation(s)
- Xiao Wan
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- 221116
- China
| | - Meng Sun
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- 221116
- China
| | - Jing-Yi Wang
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- 221116
- China
| | - Lei Yu
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- 221116
- China
| | - Qiong Wu
- School of Materials and Chemical Engineering
- Xuzhou University of Technology
- Xuzhou 221018
- China
| | - Yu-Chen Zhang
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- 221116
- China
| | - Feng Shi
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- 221116
- China
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33
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Pan B, Ouyang JS, Zhang Y, Liang H, Ni Q, Chen B, Pu X, Jiang L, Cao R, Qiu L. Iridium-catalyzed intramolecular asymmetric allylic etherification of salicylic acid derivatives with chiral-bridged biphenyl phosphoramidite ligands. Org Chem Front 2021. [DOI: 10.1039/d1qo00566a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Iridium-catalyzed intramolecular asymmetric allylic etherification of salicylic acid derivatives was successfully realized for the first time.
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34
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Wang Y, Zhang WY, Xie JH, Yu ZL, Tan JH, Zheng C, Hou XL, You SL. Enantioselective Desymmetrization of Bisphenol Derivatives via Ir-Catalyzed Allylic Dearomatization. J Am Chem Soc 2020; 142:19354-19359. [PMID: 33140959 DOI: 10.1021/jacs.0c09638] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Spirocyclic hexadienones with multiple stereogenic centers are frequently found in natural products but remain challenging targets to synthesize. Herein, we report the enantioselective desymmetrization of bisphenol derivatives via Ir-catalyzed allylic dearomatization reactions, affording spirocyclic hexadienone derivatives with up to three contiguous stereogenic centers in good yields (up to 90%) and excellent enantioselectivity (up to 99% ee). The high efficiency of this reaction is exemplified by the short reaction time (30 min), low catalyst loading (down to 0.2 mol %), and ability to perform the reaction on a gram-scale. The total syntheses of (+)-tatanan B and (+)-tatanan C were also realized using this Ir-catalyzed allylic dearomatization reaction as a key step.
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Affiliation(s)
- Ye Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Wen-Yun Zhang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Jia-Hao Xie
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Zong-Lun Yu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Jia-Hao Tan
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Xue-Long Hou
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
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35
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Hang Q, Liu S, Yu L, Sun T, Zhang Y, Mei G, Shi F. Design and Application of
Indole‐Based
Allylic Donors for
Pd‐Catalyzed
Decarboxylative Allylation Reactions
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000104] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Qing‐Qing Hang
- School of Chemistry and Materials Science, Jiangsu Normal University Xuzhou Jiangsu 221116 China
| | - Si‐Jia Liu
- School of Chemistry and Materials Science, Jiangsu Normal University Xuzhou Jiangsu 221116 China
| | - Lei Yu
- School of Chemistry and Materials Science, Jiangsu Normal University Xuzhou Jiangsu 221116 China
| | - Ting‐Ting Sun
- School of Chemistry and Materials Science, Jiangsu Normal University Xuzhou Jiangsu 221116 China
| | - Yu‐Chen Zhang
- School of Chemistry and Materials Science, Jiangsu Normal University Xuzhou Jiangsu 221116 China
| | - Guang‐Jian Mei
- School of Chemistry and Materials Science, Jiangsu Normal University Xuzhou Jiangsu 221116 China
| | - Feng Shi
- School of Chemistry and Materials Science, Jiangsu Normal University Xuzhou Jiangsu 221116 China
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36
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Soklou KE, Marzag H, Bouillon JP, Marchivie M, Routier S, Plé K. Gold(I)-Catalyzed Intramolecular Hydroamination and Hydroalkoxylation of Alkynes: Access to Original Heterospirocycles. Org Lett 2020; 22:5973-5977. [PMID: 32692567 DOI: 10.1021/acs.orglett.0c02070] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report here a simple and robust gold-catalyzed annulation reaction, giving N- and O-spirocycles in good to excellent yields. We have prepared a library of protected amines and tertiary alcohols that give, upon cyclization with alkynes, a representative set of heterospirocycles and illustrate reaction compatibility with diverse functional groups. A change in catalytic activity is possible by modifying the solvent, and two original tricyclic spirocycles were synthesized in a tandem reaction.
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Affiliation(s)
- Kossi Efouako Soklou
- Institut de Chimie Organique et Analytique, Université d'Orléans, CNRS UMR 7311, 45067 Cedex 2, Orléans, France
| | - Hamid Marzag
- Institut de Chimie Organique et Analytique, Université d'Orléans, CNRS UMR 7311, 45067 Cedex 2, Orléans, France
| | | | | | - Sylvain Routier
- Institut de Chimie Organique et Analytique, Université d'Orléans, CNRS UMR 7311, 45067 Cedex 2, Orléans, France
| | - Karen Plé
- Institut de Chimie Organique et Analytique, Université d'Orléans, CNRS UMR 7311, 45067 Cedex 2, Orléans, France
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37
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Wu B, Yang J, Gao M, Hu L. Ring-Strain-Enabled Catalytic Asymmetric Umpolung C–O Bond-Forming Reactions of 1,2-Oxazetidines for the Synthesis of Functionalized Chiral Ethers. Org Lett 2020; 22:5561-5566. [DOI: 10.1021/acs.orglett.0c01916] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Binyu Wu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P.R. China
| | - Jinggang Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P.R. China
| | - Min Gao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P.R. China
| | - Lin Hu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P.R. China
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38
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Qian C, Tang W. A Versatile Synthesis of Vinyl-Substituted Heterocycles via Regio- and Enantioselective Pd-Catalyzed Tandem Allylic Substitution. Org Lett 2020; 22:4483-4488. [DOI: 10.1021/acs.orglett.0c01490] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Chao Qian
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
- School of Chemistry and Material Science, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China
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39
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Jones KD, Nutt MJ, Comninos E, Sobolev AN, Moggach SA, Miura T, Murakami M, Stewart SG. A One-Pot Reaction of α-Imino Rhodium Carbenoids and Halohydrins: Access to 2,6-Substituted Dihydro-2H-1,4-oxazines. Org Lett 2020; 22:3490-3494. [DOI: 10.1021/acs.orglett.0c00947] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Kieran D. Jones
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Michael J. Nutt
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Elena Comninos
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Alexandre N. Sobolev
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
- Centre for Microscopy, Characterization and Analysis, The University of Western Australia, Perth, WA 6009, Australia
| | - Stephen A. Moggach
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
- Centre for Microscopy, Characterization and Analysis, The University of Western Australia, Perth, WA 6009, Australia
| | - Tomoya Miura
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto, 615-8510, Japan
| | - Masahiro Murakami
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto, 615-8510, Japan
| | - Scott G. Stewart
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
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40
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Liu X, Jin S, Zhang W, Liu Q, Zheng C, You S. Sequence‐Dependent Stereodivergent Allylic Alkylation/Fluorination of Acyclic Ketones. Angew Chem Int Ed Engl 2020; 59:2039-2043. [DOI: 10.1002/anie.201912882] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Xi‐Jia Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shicheng Jin
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Wen‐Yun Zhang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Qiang‐Qiang Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shu‐Li You
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
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41
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Liu X, Jin S, Zhang W, Liu Q, Zheng C, You S. Sequence‐Dependent Stereodivergent Allylic Alkylation/Fluorination of Acyclic Ketones. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912882] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Xi‐Jia Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shicheng Jin
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Wen‐Yun Zhang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Qiang‐Qiang Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shu‐Li You
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
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42
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Aubineau T, Cossy J. Metal-Catalyzed Cyclization: Synthesis of (Benzo)morpholines and (Benzo)[1,4]dihydrooxazines. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900927] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Thomas Aubineau
- Molecular, Macromolecular Chemistry and Materials, ESPCI Paris, CNRS; PSL University; 10 rue Vauquelin 75005 Paris France
| | - Janine Cossy
- Molecular, Macromolecular Chemistry and Materials, ESPCI Paris, CNRS; PSL University; 10 rue Vauquelin 75005 Paris France
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43
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Zheng DS, Zhao ZL, Gu Q, You SL. Ir-Catalyzed Intermolecular Asymmetric Allylic Alkylation of β-Tetralones. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dong-Song Zheng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People’s Republic of China
| | - Zheng-Le Zhao
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People’s Republic of China
| | - Qing Gu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People’s Republic of China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People’s Republic of China
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44
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Tsukamoto H, Kawase A, Omura H, Doi T. Key Factors for High Diastereo- and Enantioselectivity of Umpolung Cyclizations of Aldehyde-Containing Allylpalladium Intermediates. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190167] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Hirokazu Tsukamoto
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
- Department of Pharmaceutical Sciences, Yokohama University of Pharmacy, 601 Matano-cho, Totsuka-ku, Yokohama, Kanagawa 245-0066, Japan
| | - Ayumu Kawase
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Hirotaka Omura
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Takayuki Doi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
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45
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Sihag P, Jeganmohan M. Iridium(III)-Catalyzed Intermolecular Allylic C–H Amidation of Internal Alkenes with Sulfonamides. J Org Chem 2019; 84:13053-13064. [DOI: 10.1021/acs.joc.9b02047] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Pinki Sihag
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
| | - Masilamani Jeganmohan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
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46
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Matviitsuk A, Denmark SE. Enantio‐ and Diastereoselective, Lewis Base Catalyzed, Cascade Sulfenoacetalization of Alkenyl Aldehydes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906535] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Anastassia Matviitsuk
- Roger Adams LaboratoryDepartment of ChemistryUniversity of Illinois Urbana IL 61801 USA
| | - Scott E. Denmark
- Roger Adams LaboratoryDepartment of ChemistryUniversity of Illinois Urbana IL 61801 USA
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47
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Matviitsuk A, Denmark SE. Enantio- and Diastereoselective, Lewis Base Catalyzed, Cascade Sulfenoacetalization of Alkenyl Aldehydes. Angew Chem Int Ed Engl 2019; 58:12486-12490. [PMID: 31295383 DOI: 10.1002/anie.201906535] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Indexed: 01/26/2023]
Abstract
A catalytic, enantio-, and diastereoselective formation of sulfenyl acetals bearing multiple stereogenic centers is reported. Alkenyl aldehydes undergo a chiral thiiranium ion initiated cascade starting with intramolecular capture by a formyl group and termination by capture with HFIP solvent. This method provides a one-pot synthesis of dihydropyran and 1,3-disubstituted isochroman acetals in good to excellent yield and with high levels of diastereo- (up to >99:1 dr) and enantiocontrol (up to 99:1 er).
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Affiliation(s)
- Anastassia Matviitsuk
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, IL, 61801, USA
| | - Scott E Denmark
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, IL, 61801, USA
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48
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Shan C, Zhang T, Xiong Q, Yan H, Bai R, Lan Y. Hydrogen‐Bond‐Induced Chiral Axis Construction: Theoretical Study of Cinchonine–Thiourea‐Catalyzed Enantioselective Intramolecular Cycloaddition. Chem Asian J 2019; 14:2731-2736. [DOI: 10.1002/asia.201900624] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/10/2019] [Indexed: 12/23/2022]
Affiliation(s)
- Chunhui Shan
- Postdoctoral Station of Biomedical EngineeringChongqing University Chongqing 400030 P.R. China
| | - Tao Zhang
- School of Chemistry and Chemical EngineeringChongqing Key Laboratory of Theoretical and Computational ChemistryChongqing University Chongqing 400030 P.R. China
| | - Qin Xiong
- School of Chemistry and Chemical EngineeringChongqing Key Laboratory of Theoretical and Computational ChemistryChongqing University Chongqing 400030 P.R. China
| | - Hailong Yan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug, ResearchSchool of Pharmaceutical SciencesChongqing University Chongqing 400030 P.R. China
| | - Ruopeng Bai
- School of Chemistry and Chemical EngineeringChongqing Key Laboratory of Theoretical and Computational ChemistryChongqing University Chongqing 400030 P.R. China
| | - Yu Lan
- School of Chemistry and Chemical EngineeringChongqing Key Laboratory of Theoretical and Computational ChemistryChongqing University Chongqing 400030 P.R. China
- College of Chemistry and Molecular EngineeringZhengzhou University Zhengzhou 450001 P.R. China
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49
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Zhang HJ, Yang ZP, Gu Q, You SL. Tandem Pd-Catalyzed Intermolecular Allylic Alkylation/Allylic Dearomatization Reaction of Benzoylmethyl pyridines, Pyrazines, and Quinolines. Org Lett 2019; 21:3314-3318. [DOI: 10.1021/acs.orglett.9b01060] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Hui-Jun Zhang
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Ze-Peng Yang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Qing Gu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Shu-Li You
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
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