1
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Koser L, Bach T. Total Synthesis of (-)-5-Deoxyenterocin and Attempted Late-Stage Functionalization Reactions. Chemistry 2023; 29:e202301996. [PMID: 37452638 DOI: 10.1002/chem.202301996] [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: 06/23/2023] [Revised: 07/14/2023] [Accepted: 07/14/2023] [Indexed: 07/18/2023]
Abstract
The first total synthesis of (-)-5-deoxyenterocin has been accomplished starting from pentane-1,3,5-triol (16 steps in the longest linear sequence, 0.2 % overall yield). (-)-Menthone served as the source of chirality to distinguish the enantiotopic hydroxymethyl groups of the substrate. Key steps of the synthesis include two aldol reactions to either end of the C5 -skeleton, a diastereoselective hydroxylation reaction and a biomimetic twofold intramolecular aldol reaction as the final step. Although this step suffered from geometrical constraints and was low yielding (10 %), enough synthetic material could be secured to substantiate the relative and absolute configuration of the natural product. Additional experiments were directed toward a C-H functionalization at carbon atom C5. Despite the fact that several protocols could be successfully applied to (3aR)-(+)-sclareolide as model substrate, (-)-5-deoxyenterocin withstood any selective functionalization.
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Affiliation(s)
- Lilla Koser
- Department Chemie and Catalysis Research Center (CRC), School of Natural Sciences, Technische Universität München, Lichtenbergstraße 4, 85747, Garching, Germany
| | - Thorsten Bach
- Department Chemie and Catalysis Research Center (CRC), School of Natural Sciences, Technische Universität München, Lichtenbergstraße 4, 85747, Garching, Germany
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2
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Chen J, Wang H, Day CS, Martin R. Nickel-Catalyzed Site-Selective Intermolecular C(sp 3 )-H Amidation. Angew Chem Int Ed Engl 2022; 61:e202212983. [PMID: 36254803 DOI: 10.1002/anie.202212983] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Indexed: 11/06/2022]
Abstract
A nickel-catalyzed site-selective intermolecular amidation of saturated C(sp3 )-H bonds is reported. This mild protocol exhibits a predictable reactivity pattern to incorporate amide functions at C(sp3 )-H sites adjacent to nitrogen and oxygen atoms in either cyclic or acyclic frameworks, thus offering a complementary reactivity profile to existing oxidative-type processes or metal-catalyzed C(sp3 )-N bond-forming reactions operating via two-electron manifolds.
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Affiliation(s)
- Jinhong Chen
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, c/Marcel ⋅ lí Domingo, 1, 43007, Tarragona, Spain
| | - Hao Wang
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, c/Marcel ⋅ lí Domingo, 1, 43007, Tarragona, Spain
| | - Craig S Day
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, c/Marcel ⋅ lí Domingo, 1, 43007, Tarragona, Spain
| | - Ruben Martin
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
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3
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Ravindar L, Hasbullah SA, Hassan NI, Qin HL. Cross‐Coupling of C‐H and N‐H Bonds: a Hydrogen Evolution Strategy for the Construction of C‐N Bonds. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lekkala Ravindar
- Universiti Kebangsaan Malaysia Fakulti Teknologi dan Sains Maklumat Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Siti Aishah Hasbullah
- Universiti Kebangsaan Malaysia Fakulti Sains dan Teknologi Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Nurul Izzaty Hassan
- Universiti Kebangsaan Malaysia Fakulti Sains dan Teknologi Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Hua-Li Qin
- Wuhan University of Technology School of Chemistry 430070 Hubei CHINA
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4
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Roychowdhury P, Herrera RG, Tan H, Powers DC. Traceless Benzylic C-H Amination via Bifunctional N-Aminopyridinium Intermediates. Angew Chem Int Ed Engl 2022; 61:e202200665. [PMID: 35483017 DOI: 10.1002/anie.202200665] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Indexed: 11/06/2022]
Abstract
C-H amination reactions provide the opportunity to streamline the synthesis of nitrogen-containing organic small molecules. The impact of intermolecular C-H amination methods, however, is currently limited the frequent requirement for the amine precursors to bear activating groups, such as N-sulfonyl substituents, that are both challenging to remove and not useful synthetic handles for subsequent derivatization. Here, we introduce traceless nitrogen activation for C-H amination-which enables application of selective C-H amination chemistry to the preparation of diverse N-functionalized products-via sequential benzylic C-H N-aminopyridylation followed by Ni-catalyzed C-N cross-coupling with aryl boronic acids. Unlike many C-H amination reactions that provide access to protected amines, the current method installs an easily diversifiable synthetic handle that serves as a lynchpin for C-H amination, deaminative N-N functionalization sequences.
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Affiliation(s)
- Pritam Roychowdhury
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA
| | - Roberto G Herrera
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA
| | - Hao Tan
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA
| | - David C Powers
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA
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5
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Min S, Park B, Nedsaengtip J, Hyeok Hong S. Mechanochemical Direct Fluorination of Unactivated C(
sp
3
)−H Bonds. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sehye Min
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
| | - Beomsoon Park
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
| | - Jantakan Nedsaengtip
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
| | - Soon Hyeok Hong
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
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6
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Roychowdhury P, Herrera RG, Tan H, Powers DC. Traceless Benzylic C−H Amination via Bifunctional
N
‐Aminopyridinium Intermediates. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Roberto G. Herrera
- Department of Chemistry Texas A&M University College Station TX 77843 USA
| | - Hao Tan
- Department of Chemistry Texas A&M University College Station TX 77843 USA
| | - David C. Powers
- Department of Chemistry Texas A&M University College Station TX 77843 USA
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7
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Maity A, Roychowdhury P, Herrera RG, Powers DC. Diversification of Amidyl Radical Intermediates Derived from C-H Aminopyridylation. Org Lett 2022; 24:2762-2766. [PMID: 35377670 PMCID: PMC9089237 DOI: 10.1021/acs.orglett.2c00869] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The N-activating substituents typically encountered in C-H amination chemistry are challenging to remove and have limited scope for synthetic elaboration. Here, we demonstrate that N-benzylaminopyridinium species provide a platform for synthetic elaboration via reductive N-N bond activation to unveil electrophilic N-centered radicals. These reactive intermediates can be trapped either via anti-Markovnikov olefin carboamination to provide access to tetrahydroisoquinolines or via aza-Rubottom chemistry with silyl enol ethers to provide α-amino ketones.
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Affiliation(s)
- Asim Maity
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Pritam Roychowdhury
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Roberto G Herrera
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - David C Powers
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
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8
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Lazib Y, Retailleau P, Saget T, Darses B, Dauban P. Asymmetric Synthesis of Enantiopure Pyrrolidines by C(sp 3 )-H Amination of Hydrocarbons. Angew Chem Int Ed Engl 2021; 60:21708-21712. [PMID: 34329511 DOI: 10.1002/anie.202107898] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Indexed: 11/07/2022]
Abstract
The asymmetric synthesis of enantiopure pyrrolidines is reported via a streamlined strategy relying on two sequential C-H functionalizations of simple hydrocarbons. The first step is a regio- and stereoselective catalytic nitrene C-H insertion. Then, a subsequent diastereoselective cyclization involving a 1,5-hydrogen atom transfer (HAT) from a N-centered radical leads to the formation of pyrrolidines that can then be converted to their free NH-derivatives.
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Affiliation(s)
- Yanis Lazib
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, Av. de la Terrasse, 91198, Gif-sur-Yvette, France
| | - Pascal Retailleau
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, Av. de la Terrasse, 91198, Gif-sur-Yvette, France
| | - Tanguy Saget
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, Av. de la Terrasse, 91198, Gif-sur-Yvette, France
| | - Benjamin Darses
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, Av. de la Terrasse, 91198, Gif-sur-Yvette, France.,Université Grenoble Alpes, Département de Chimie Moléculaire, CNRS UMR-5250, 38058, Grenoble, France
| | - Philippe Dauban
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, Av. de la Terrasse, 91198, Gif-sur-Yvette, France
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9
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Lazib Y, Retailleau P, Saget T, Darses B, Dauban P. Asymmetric Synthesis of Enantiopure Pyrrolidines by C(sp
3
)−H Amination of Hydrocarbons. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yanis Lazib
- Université Paris-Saclay CNRS Institut de Chimie des Substances Naturelles UPR 2301 Av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Pascal Retailleau
- Université Paris-Saclay CNRS Institut de Chimie des Substances Naturelles UPR 2301 Av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Tanguy Saget
- Université Paris-Saclay CNRS Institut de Chimie des Substances Naturelles UPR 2301 Av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Benjamin Darses
- Université Paris-Saclay CNRS Institut de Chimie des Substances Naturelles UPR 2301 Av. de la Terrasse 91198 Gif-sur-Yvette France
- Université Grenoble Alpes Département de Chimie Moléculaire CNRS UMR-5250 38058 Grenoble France
| | - Philippe Dauban
- Université Paris-Saclay CNRS Institut de Chimie des Substances Naturelles UPR 2301 Av. de la Terrasse 91198 Gif-sur-Yvette France
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10
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Fawcett A, Keller MJ, Herrera Z, Hartwig JF. Site Selective Chlorination of C(sp 3 )-H Bonds Suitable for Late-Stage Functionalization. Angew Chem Int Ed Engl 2021; 60:8276-8283. [PMID: 33480134 DOI: 10.1002/anie.202016548] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 01/03/2021] [Indexed: 01/18/2023]
Abstract
C(sp3 )-Cl bonds are present in numerous biologically active small molecules, and an ideal route for their preparation is by the chlorination of a C(sp3 )-H bond. However, most current methods for the chlorination of C(sp3 )-H bonds are insufficiently site selective and tolerant of functional groups to be applicable to the late-stage functionalization of complex molecules. We report a method for the highly selective chlorination of tertiary and benzylic C(sp3 )-H bonds to produce the corresponding chlorides, generally in high yields. The reaction occurs with a mixture of an azidoiodinane, which generates a selective H-atom abstractor under mild conditions, and a readily-accessible and inexpensive copper(II) chloride complex, which efficiently transfers a chlorine atom. The reaction's exceptional functional group tolerance is demonstrated by the chlorination of >30 diversely functionalized substrates and the late-stage chlorination of a dozen derivatives of natural products and active pharmaceutical ingredients.
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Affiliation(s)
- Alexander Fawcett
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - M Josephine Keller
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Zachary Herrera
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - John F Hartwig
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA
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11
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Fawcett A, Keller MJ, Herrera Z, Hartwig JF. Site Selective Chlorination of C(sp
3
)−H Bonds Suitable for Late‐Stage Functionalization. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Alexander Fawcett
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| | - M. Josephine Keller
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| | - Zachary Herrera
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| | - John F. Hartwig
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
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12
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Castro SJ, Padrón JM, Darses B, Nicotra VE, Dauban P. Late‐stage Rh(II)‐catalyzed Nitrene Transfer for the Synthesis of Guaianolide Analogs with Enhanced Antiproliferative Activity. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sebastián J. Castro
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud Université Paris-Saclay Av. de la Terrasse 91198 Gif-sur-Yvette France
- Facultad de Ciencias Químicas, Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET) Universidad Nacional de Córdoba Casilla de Correo 495 5000 Córdoba Argentina
- Facultad de Ciencias Químicas, Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET) Universidad Nacional de Córdoba Casilla de Correo 495 5000 Córdoba Argentina
| | - José M. Padrón
- BioLab, Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG) Universidad de La Laguna C/Astrofísico Francisco Sánchez 2 38206 La Laguna Spain
| | - Benjamin Darses
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud Université Paris-Saclay Av. de la Terrasse 91198 Gif-sur-Yvette France
- Univ. Grenoble Alpes, CNRS, DCM 38000 Grenoble France
| | - Viviana E. Nicotra
- Facultad de Ciencias Químicas, Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET) Universidad Nacional de Córdoba Casilla de Correo 495 5000 Córdoba Argentina
| | - Philippe Dauban
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud Université Paris-Saclay Av. de la Terrasse 91198 Gif-sur-Yvette France
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13
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Yasue R, Yoshida K. Enantioselective Desymmetrization of 1,3‐Disubstituted Adamantane Derivatives via Rhodium‐Catalyzed C−H Bond Amination: Access to Optically Active Amino Acids Containing Adamantane Core. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001419] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Risa Yasue
- Department of Chemistry Graduate School of Science Chiba University Yayoi-cho, Inage-ku Chiba 263-8522 Japan
| | - Kazuhiro Yoshida
- Department of Chemistry Graduate School of Science Chiba University Yayoi-cho, Inage-ku Chiba 263-8522 Japan
- Molecular Chirality Research Center Chiba University Yayoi-cho, Inage-ku Chiba 263-8522 Japan
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14
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Hou Z, Liu D, Xiong P, Lai X, Song J, Xu H. Site‐Selective Electrochemical Benzylic C−H Amination. Angew Chem Int Ed Engl 2020; 60:2943-2947. [DOI: 10.1002/anie.202013478] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Indexed: 12/24/2022]
Affiliation(s)
- Zhong‐Wei Hou
- Advanced Research Institute and Department of Chemistry Taizhou University Taizhou 318000 P. R. China
| | - Ding‐Jin Liu
- Laboratory of Chemical Biology of Fujian Province State Key Laboratory of Physical Chemistry of Solid Surfaces iChEM College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 P. R. China
| | - Peng Xiong
- Laboratory of Chemical Biology of Fujian Province State Key Laboratory of Physical Chemistry of Solid Surfaces iChEM College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 P. R. China
| | - Xiao‐Li Lai
- Laboratory of Chemical Biology of Fujian Province State Key Laboratory of Physical Chemistry of Solid Surfaces iChEM College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 P. R. China
| | - Jinshuai Song
- College of Chemistry and Molecular Engineering Zhengzhou University Zhengzhou 450001 P. R. China
| | - Hai‐Chao Xu
- Laboratory of Chemical Biology of Fujian Province State Key Laboratory of Physical Chemistry of Solid Surfaces iChEM College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 P. R. China
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15
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Hou Z, Liu D, Xiong P, Lai X, Song J, Xu H. Site‐Selective Electrochemical Benzylic C−H Amination. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202013478] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Zhong‐Wei Hou
- Advanced Research Institute and Department of Chemistry Taizhou University Taizhou 318000 P. R. China
| | - Ding‐Jin Liu
- Laboratory of Chemical Biology of Fujian Province State Key Laboratory of Physical Chemistry of Solid Surfaces iChEM College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 P. R. China
| | - Peng Xiong
- Laboratory of Chemical Biology of Fujian Province State Key Laboratory of Physical Chemistry of Solid Surfaces iChEM College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 P. R. China
| | - Xiao‐Li Lai
- Laboratory of Chemical Biology of Fujian Province State Key Laboratory of Physical Chemistry of Solid Surfaces iChEM College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 P. R. China
| | - Jinshuai Song
- College of Chemistry and Molecular Engineering Zhengzhou University Zhengzhou 450001 P. R. China
| | - Hai‐Chao Xu
- Laboratory of Chemical Biology of Fujian Province State Key Laboratory of Physical Chemistry of Solid Surfaces iChEM College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 P. R. China
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16
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Liu W, Babl T, Röther A, Reiser O, Davies HML. Functionalization of Piperidine Derivatives for the Site-Selective and Stereoselective Synthesis of Positional Analogues of Methylphenidate. Chemistry 2020; 26:4236-4241. [PMID: 31873946 PMCID: PMC7187323 DOI: 10.1002/chem.201905773] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Indexed: 12/13/2022]
Abstract
Rhodium‐catalyzed C−H insertions and cyclopropanations of donor/acceptor carbenes have been used for the synthesis of positional analogues of methylphenidate. The site selectivity is controlled by the catalyst and the amine protecting group. C−H functionalization of N‐Boc‐piperidine using Rh2(R‐TCPTAD)4, or N‐brosyl‐piperidine using Rh2(R‐TPPTTL)4 generated 2‐substitited analogues. In contrast, when N‐α‐oxoarylacetyl‐piperidines were used in combination with Rh2(S‐2‐Cl‐5‐BrTPCP)4, the C−H functionalization produced 4‐susbstiuted analogues. Finally, the 3‐substituted analogues were prepared indirectly by cyclopropanation of N‐Boc‐tetrahydropyridine followed by reductive regio‐ and stereoselective ring‐opening of the cyclopropanes.
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Affiliation(s)
- Wenbin Liu
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA, 30322, USA
| | - Tobias Babl
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA, 30322, USA.,Institute of Organic Chemistry, University of Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Alexander Röther
- Institute of Organic Chemistry, University of Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Oliver Reiser
- Institute of Organic Chemistry, University of Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Huw M L Davies
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA, 30322, USA
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17
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Trowbridge A, Walton SM, Gaunt MJ. New Strategies for the Transition-Metal Catalyzed Synthesis of Aliphatic Amines. Chem Rev 2020; 120:2613-2692. [DOI: 10.1021/acs.chemrev.9b00462] [Citation(s) in RCA: 310] [Impact Index Per Article: 77.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Aaron Trowbridge
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Scarlett M. Walton
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
- Oncology
- IMED Biotech Unit, AstraZeneca, Darwin Building, Unit 310, Cambridge Science Park, Milton Road, Cambridge CB4 0WG, United Kingdom
| | - Matthew J. Gaunt
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
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18
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Rotella ME, Dyer RMB, Hilinski MK, Gutierrez O. Mechanism of Iminium Salt-Catalyzed C(sp 3)-H Amination: Factors Controlling Hydride Transfer versus H-Atom Abstraction. ACS Catal 2020; 10:897-906. [PMID: 34113476 DOI: 10.1021/acscatal.9b03588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Carbon-nitrogen bonds are extremely prevalent in pharmaceuticals, natural products, and other biologically relevant molecules such as nucleic acids and proteins. Intermolecular amination of C(sp3)-H bonds by catalytic nitrene transfer is a promising method for forging C-N bonds. An organocatalytic approach to nitrene transfer by way of an iminium salt offers a site-selective method for C(sp3)-H amination. Understanding of this amination mechanism including the nature of the relevant intermediates and the factors controlling the mechanism of the N-H bond formation step would aid in the design of catalysts and C(sp3)-H amination methods. In this work, the mechanism of the iminium salt-catalyzed C(sp3)-H amination via nitrene transfer was elucidated computationally using quantum mechanical methods and molecular dynamics simulations. Dispersion-corrected density functional theory (DFT) calculations provide support for an open singlet biradical species in equilibrium with the lower energy triplet species. Calculations further reveal that while the singlet biradical species undergoes N-H bond formation by a hydride transfer process, the triplet species forms the N-H bond by H-atom abstraction. Molecular dynamics (MD) simulations rule out the possibility of a fast rebound of the carbon substrate following N-H bond formation. A predictive model for mode of activation and site-selectivity that is consistent with experimental observations is presented.
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Affiliation(s)
- Madeline E Rotella
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, 20742-4454, United States
| | - Robert M B Dyer
- Department of Chemistry, University of Virginia, Charlottesville, Virginia, 22904-4319, United States
| | - Michael K Hilinski
- Department of Chemistry, University of Virginia, Charlottesville, Virginia, 22904-4319, United States
| | - Osvaldo Gutierrez
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, 20742-4454, United States
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19
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D'Accolti L, Annese C, Fusco C. Continued Progress towards Efficient Functionalization of Natural and Non-natural Targets under Mild Conditions: Oxygenation by C-H Bond Activation with Dioxirane. Chemistry 2019; 25:12003-12017. [PMID: 31150563 DOI: 10.1002/chem.201901687] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Indexed: 12/12/2022]
Abstract
The successful isolation and characterization of a dioxirane species in 1988 opened up one of the most attractive methods for the efficient oxidation of simple and/or structurally complex molecules. Dioxirane today rank among the most powerful tools in organic chemistry, with numerous applications in commercially important processes. They were quickly recognized as efficient oxygen transfer agents, especially for epoxidations and for a wide range of O-insertion reactions into C-H bonds. Dioxirane possess catalytic activity and appear as highly (chemo-, regio-, and stereo-) selective oxidants, despite their reactivity under mild and strictly neutral conditions being controlled by a combination of steric and electronic factors. In this review, we discuss some of the most recent and significant developments in the selective homogeneous and heterogeneous oxyfunctionalization of non-activated C-H bonds in hydrocarbons of natural and non-natural targets by using isolated dioxirane or, more generally, by using the ketones (i.e., the dioxirane precursors) as organocatalysts.
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Affiliation(s)
- Lucia D'Accolti
- Chemistry Department, University of Bari, Via Orabona, 4, Bari, Italy
| | - Cosimo Annese
- Institute of Chemistry of Organometallic Compounds, National Council of Research of Italy, CNR-ICCOM, SS Bari, Chemistry Department, University of Bari, Via Orabona, 4, Bari, Italy
| | - Caterina Fusco
- Institute of Chemistry of Organometallic Compounds, National Council of Research of Italy, CNR-ICCOM, SS Bari, Chemistry Department, University of Bari, Via Orabona, 4, Bari, Italy
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20
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Hurski AL, Kukel AG, Liubina AI, Baradzenka AG, Straltsova D, Demidchik V, Drašar P, Zhabinskii VN, Khripach VA. Regio- and stereoselective C-H functionalization of brassinosteroids. Steroids 2019; 146:92-98. [PMID: 30951761 DOI: 10.1016/j.steroids.2019.03.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 03/15/2019] [Accepted: 03/28/2019] [Indexed: 10/27/2022]
Abstract
Late stage CH functionalization is a powerful tool for modification of natural compounds. Herein we report that the rhodium-catalyzed reaction of brassinosteroids with aryloxysulfonamides proceeds regio- and stereoselectively at C15 position. The derivative obtained from 24-epibrassinolide was easily transformed to the conjugate with a BODIPY dye bearing unaffected functional groups of the native brassinosteroid.
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Affiliation(s)
- Alaksiej L Hurski
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich St., 5/2, 220141 Minsk, Belarus.
| | - Aliaksandr G Kukel
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich St., 5/2, 220141 Minsk, Belarus
| | - Aliaksandra I Liubina
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich St., 5/2, 220141 Minsk, Belarus
| | - Aliona G Baradzenka
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich St., 5/2, 220141 Minsk, Belarus
| | - Darya Straltsova
- Department of Plant Cell Biology and Bioengineering, Biological Faculty, Belarusian State University, Minsk, Belarus
| | - Vadim Demidchik
- Department of Plant Cell Biology and Bioengineering, Biological Faculty, Belarusian State University, Minsk, Belarus
| | - Pavel Drašar
- University of Chemistry and Technology, Technická 5, CZ-166 28 Praha 6, Czech Republic
| | - Vladimir N Zhabinskii
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich St., 5/2, 220141 Minsk, Belarus
| | - Vladimir A Khripach
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich St., 5/2, 220141 Minsk, Belarus
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21
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Nasrallah A, Boquet V, Hecker A, Retailleau P, Darses B, Dauban P. Catalytic Enantioselective Intermolecular Benzylic C(sp
3
)−H Amination. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902882] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ali Nasrallah
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Univ. Paris-Sud, Université Paris-Saclay 1, av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Vincent Boquet
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Univ. Paris-Sud, Université Paris-Saclay 1, av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Alexandra Hecker
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Univ. Paris-Sud, Université Paris-Saclay 1, av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Univ. Paris-Sud, Université Paris-Saclay 1, av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Benjamin Darses
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Univ. Paris-Sud, Université Paris-Saclay 1, av. de la Terrasse 91198 Gif-sur-Yvette France
- Université Grenoble Alpes Département de Chimie Moléculaire, CNRS UMR-5250 38058 Grenoble France
| | - Philippe Dauban
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Univ. Paris-Sud, Université Paris-Saclay 1, av. de la Terrasse 91198 Gif-sur-Yvette France
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22
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Nasrallah A, Boquet V, Hecker A, Retailleau P, Darses B, Dauban P. Catalytic Enantioselective Intermolecular Benzylic C(sp 3 )-H Amination. Angew Chem Int Ed Engl 2019; 58:8192-8196. [PMID: 30968491 DOI: 10.1002/anie.201902882] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Indexed: 11/11/2022]
Abstract
A practical general method for asymmetric intermolecular benzylic C(sp3 )-H amination has been developed by combining the pentafluorobenzyl sulfamate PfbsNH2 with the chiral rhodium(II) catalyst Rh2 (S-tfptad)4 . Various substrates can be used as limiting components and converted to benzylic amines with excellent yields and high levels of enantioselectivity. Additional key features for the reaction are the low catalyst loading and the ability to remove the Pfbs group under mild conditions to give NH-free benzylic amines.
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Affiliation(s)
- Ali Nasrallah
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198, Gif-sur-Yvette, France
| | - Vincent Boquet
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198, Gif-sur-Yvette, France
| | - Alexandra Hecker
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198, Gif-sur-Yvette, France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198, Gif-sur-Yvette, France
| | - Benjamin Darses
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198, Gif-sur-Yvette, France.,Université Grenoble Alpes, Département de Chimie Moléculaire, CNRS UMR-5250, 38058, Grenoble, France
| | - Philippe Dauban
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198, Gif-sur-Yvette, France
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23
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Bosnidou AE, Muñiz K. Intermolecular Radical C(sp 3 )-H Amination under Iodine Catalysis. Angew Chem Int Ed Engl 2019; 58:7485-7489. [PMID: 30888107 DOI: 10.1002/anie.201901673] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Indexed: 12/25/2022]
Abstract
The direct amination of aliphatic C-H bonds has remained one of the most tantalizing transformations in organic chemistry. Herein, we report on a unique catalyst system, which enables the elusive intermolecular C(sp3 )-H amination. This practical synthetic strategy provides access to aminated building blocks and fosters innovative multiple C-H amination within a new approach to aminated heterocycles. The synthetic utility is demonstrated by the synthesis of four relevant pharmaceuticals.
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Affiliation(s)
- Alexandra E Bosnidou
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Kilian Muñiz
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain.,ICREA, Pg. Lluís Companys 23, 08010, Barcelona, Spain
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24
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Bosnidou AE, Muñiz K. Intermolekulare radikalische C(sp
3
)‐H‐Aminierung unter Iod‐Katalyse. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901673] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Alexandra E. Bosnidou
- Institute of Chemical Research of Catalonia (ICIQ)The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spanien
| | - Kilian Muñiz
- Institute of Chemical Research of Catalonia (ICIQ)The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spanien
- ICREA Pg. Lluís Companys 23 08010 Barcelona Spanien
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25
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Bakhoda A(G, Jiang Q, Badiei YM, Bertke JA, Cundari TR, Warren TH. Copper‐Catalyzed C(sp
3
)−H Amidation: Sterically Driven Primary and Secondary C−H Site‐Selectivity. Angew Chem Int Ed Engl 2019; 58:3421-3425. [DOI: 10.1002/anie.201810556] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Indexed: 12/20/2022]
Affiliation(s)
| | - Quan Jiang
- Department of Chemistry Center for Advanced Scientific Computing and Modeling (CASCaM) University of North Texas Denton TX 76203 USA
| | - Yosra M. Badiei
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Jeffery A. Bertke
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Thomas R. Cundari
- Department of Chemistry Center for Advanced Scientific Computing and Modeling (CASCaM) University of North Texas Denton TX 76203 USA
| | - Timothy H. Warren
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
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26
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Bakhoda A(G, Jiang Q, Badiei YM, Bertke JA, Cundari TR, Warren TH. Copper‐Catalyzed C(sp
3
)−H Amidation: Sterically Driven Primary and Secondary C−H Site‐Selectivity. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201810556] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Quan Jiang
- Department of Chemistry Center for Advanced Scientific Computing and Modeling (CASCaM) University of North Texas Denton TX 76203 USA
| | - Yosra M. Badiei
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Jeffery A. Bertke
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
| | - Thomas R. Cundari
- Department of Chemistry Center for Advanced Scientific Computing and Modeling (CASCaM) University of North Texas Denton TX 76203 USA
| | - Timothy H. Warren
- Department of Chemistry Georgetown University Box 571227 Washington DC 20057-1227 USA
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27
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Goethe O, Heuer A, Ma X, Wang Z, Herzon SB. Antibacterial properties and clinical potential of pleuromutilins. Nat Prod Rep 2019; 36:220-247. [PMID: 29979463 DOI: 10.1039/c8np00042e] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Covering: up to 2018Pleuromutilins are a clinically validated class of antibiotics derived from the fungal diterpene (+)-pleuromutilin (1). Pleuromutilins inhibit bacterial protein synthesis by binding to the peptidyl transferase center (PTC) of the ribosome. In this review we summarize the biosynthesis and recent total syntheses of (+)-pleuromutilin (1). We review the mode of interaction of pleuromutilins with the bacterial ribosome, which involves binding of the C14 extension and the tricyclic core to the P and A sites of the PTC, respectively. We provide an overview of existing clinical agents, and discuss the three primary modes of bacterial resistance (mutations in ribosomal protein L3, Cfr methylation, and efflux). Finally we collect structure-activity relationships from publicly available reports, and close with some forward looking statements regarding future development.
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Affiliation(s)
- Olivia Goethe
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA.
| | - Abigail Heuer
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA.
| | - Xiaoshen Ma
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA.
| | - Zhixun Wang
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA.
| | - Seth B Herzon
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA. and Department of Pharmacology, Yale School of Medicine, New Haven, Connecticut 06520, USA
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28
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Zhu C, Zeng H, Chen F, Yang Z, Cai Y, Jiang H. Intermolecular C(sp
3
)−H Amination Promoted by Internal Oxidants: Synthesis of Trifluoroacetylated Hydrazones. Angew Chem Int Ed Engl 2018; 57:17215-17219. [DOI: 10.1002/anie.201810502] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Indexed: 01/30/2023]
Affiliation(s)
- Chuanle Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Hao Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Fulin Chen
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Zhiyi Yang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Yingying Cai
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
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29
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Zhu C, Zeng H, Chen F, Yang Z, Cai Y, Jiang H. Intermolecular C(sp
3
)−H Amination Promoted by Internal Oxidants: Synthesis of Trifluoroacetylated Hydrazones. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810502] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Chuanle Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Hao Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Fulin Chen
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Zhiyi Yang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Yingying Cai
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
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30
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Ackerman LKG, Martinez Alvarado JI, Doyle AG. Direct C-C Bond Formation from Alkanes Using Ni-Photoredox Catalysis. J Am Chem Soc 2018; 140:14059-14063. [PMID: 30351143 PMCID: PMC6411045 DOI: 10.1021/jacs.8b09191] [Citation(s) in RCA: 142] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A method for direct cross coupling between unactivated C(sp3)-H bonds and chloroformates has been accomplished via nickel and photoredox catalysis. A diverse range of feedstock chemicals, such as (a)cyclic alkanes and toluenes, along with late-stage intermediates, undergo intermolecular C-C bond formation to afford esters under mild conditions using only 3 equiv of the C-H partner. Site selectivity is predictable according to bond strength and polarity trends that are consistent with the intermediacy of a chlorine radical as the hydrogen atom-abstracting species.
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Affiliation(s)
| | | | - Abigail G. Doyle
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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31
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Hong SY, Son J, Kim D, Chang S. Ir(III)-Catalyzed Stereoselective Haloamidation of Alkynes Enabled by Ligand Participation. J Am Chem Soc 2018; 140:12359-12363. [PMID: 30217108 DOI: 10.1021/jacs.8b08134] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Described herein is the application of a strategy of ligand participation for the Ir-catalyzed imido transfer into alkynes. On the basis of a stoichiometric [3 + 2] cycloaddition of Cp*Ir(III)(κ2- N, O-chelate) with alkynyl dioxazolone, a catalytic haloamidation was developed for the first time by employing [Cp*IrCl2]2 precatalyst and NaX salts (X = Cl or Br) as practical halide sources to furnish synthetically versatile Z-(halovinyl)lactams with excellent stereoselectivity.
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Affiliation(s)
- Seung Youn Hong
- Department of Chemistry , Korea Advanced Institute of Science and Technology , Daejeon 34141 , Korea.,Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science , Daejeon 34141 , Korea
| | - Junsoo Son
- Department of Chemistry , Korea Advanced Institute of Science and Technology , Daejeon 34141 , Korea.,Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science , Daejeon 34141 , Korea
| | - Dongwook Kim
- Department of Chemistry , Korea Advanced Institute of Science and Technology , Daejeon 34141 , Korea.,Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science , Daejeon 34141 , Korea
| | - Sukbok Chang
- Department of Chemistry , Korea Advanced Institute of Science and Technology , Daejeon 34141 , Korea.,Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science , Daejeon 34141 , Korea
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32
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Hwang Y, Park Y, Kim YB, Kim D, Chang S. Revisiting Arene C(sp2
)−H Amidation by Intramolecular Transfer of Iridium Nitrenoids: Evidence for a Spirocyclization Pathway. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808892] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Yeongyu Hwang
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Yoonsu Park
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Yeong Bum Kim
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Dongwook Kim
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Sukbok Chang
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
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33
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Hwang Y, Park Y, Kim YB, Kim D, Chang S. Revisiting Arene C(sp2
)−H Amidation by Intramolecular Transfer of Iridium Nitrenoids: Evidence for a Spirocyclization Pathway. Angew Chem Int Ed Engl 2018; 57:13565-13569. [DOI: 10.1002/anie.201808892] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Indexed: 12/23/2022]
Affiliation(s)
- Yeongyu Hwang
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Yoonsu Park
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Yeong Bum Kim
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Dongwook Kim
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Sukbok Chang
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
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