1
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Cook A, Newman SG. Alcohols as Substrates in Transition-Metal-Catalyzed Arylation, Alkylation, and Related Reactions. Chem Rev 2024; 124:6078-6144. [PMID: 38630862 DOI: 10.1021/acs.chemrev.4c00094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Alcohols are abundant and attractive feedstock molecules for organic synthesis. Many methods for their functionalization require them to first be converted into a more activated derivative, while recent years have seen a vast increase in the number of complexity-building transformations that directly harness unprotected alcohols. This Review discusses how transition metal catalysis can be used toward this goal. These transformations are broadly classified into three categories. Deoxygenative functionalizations, representing derivatization of the C-O bond, enable the alcohol to act as a leaving group toward the formation of new C-C bonds. Etherifications, characterized by derivatization of the O-H bond, represent classical reactivity that has been modernized to include mild reaction conditions, diverse reaction partners, and high selectivities. Lastly, chain functionalization reactions are described, wherein the alcohol group acts as a mediator in formal C-H functionalization reactions of the alkyl backbone. Each of these three classes of transformation will be discussed in context of intermolecular arylation, alkylation, and related reactions, illustrating how catalysis can enable alcohols to be directly harnessed for organic synthesis.
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Affiliation(s)
- Adam Cook
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Stephen G Newman
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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2
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Gao Y, Hong G, Yang BM, Zhao Y. Enantioconvergent transformations of secondary alcohols through borrowing hydrogen catalysis. Chem Soc Rev 2023; 52:5541-5562. [PMID: 37519093 DOI: 10.1039/d3cs00424d] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
Direct substitution of readily available alcohols is recognized as a key research area in green chemical synthesis. Starting from simple racemic secondary alcohols, the achievement of catalytic enantioconvergent transformations of the substrates will be highly desirable for efficient access to valuable enantiopure compounds. To accomplish such attractive yet challenging transformations, the strategy of the enantioconvergent borrowing hydrogen methodology has proven to be uniquely effective and versatile. This review aims to provide an overview of the impressive progress made on this topic of research that has only thrived in the past decade. In particular, the conversion of racemic secondary alcohols to enantioenriched chiral amines, N-heterocycles, higher-order alcohols and ketones will be discussed in detail.
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Affiliation(s)
- Yaru Gao
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China.
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Republic of Singapore.
| | - Guorong Hong
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Republic of Singapore.
| | - Bin-Miao Yang
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China.
| | - Yu Zhao
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Republic of Singapore.
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China.
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3
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Huynh NO, Hodík T, Krische MJ. Enantioselective Transfer Hydrogenative Cycloaddition Unlocks the Total Synthesis of SF2446 B3: An Aglycone of Arenimycin and SF2446 Type II Polyketide Antibiotics. J Am Chem Soc 2023; 145:17461-17467. [PMID: 37494281 PMCID: PMC10443208 DOI: 10.1021/jacs.3c06225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
The first total synthesis and structure validation of an arenimycin/SF2446 type II polyketide is described, as represented by de novo construction of SF2446 B3, the aglycone shared by this family of type II polyketides. Ruthenium-catalyzed α-ketol-benzocyclobutenone [4 + 2] cycloaddition, which occurs via successive stereoablation-stereoregeneration, affects a double dynamic kinetic asymmetric transformation wherein two racemic starting materials combine to form the congested angucycline bay region with control of regio-, diastereo-, and enantioselectivity. This work represents the first application of transfer hydrogenative cycloaddition and enantioselective intermolecular metal-catalyzed C-C bond activation in target-oriented synthesis.
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Affiliation(s)
- Nancy O Huynh
- Department of Chemistry, University of Texas at Austin, 105 E 24th Street, Austin, Texas 78712, United States
| | - Tomáš Hodík
- Department of Chemistry, University of Texas at Austin, 105 E 24th Street, Austin, Texas 78712, United States
| | - Michael J Krische
- Department of Chemistry, University of Texas at Austin, 105 E 24th Street, Austin, Texas 78712, United States
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4
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Wang Y, Ma P, Ma N, Wang J. Ligand-Controlled Nickel-Catalyzed Reactions of Benzocyclobutenones with Alkynyltrifluoroborates: Diverse Construction of Polysubstituted Naphthols. Org Lett 2023; 25:3527-3532. [PMID: 37144914 DOI: 10.1021/acs.orglett.3c01091] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Ligand-controlled nickel-catalyzed selective cleavage of the C1-C2 or C1-C8 bond of benzocyclobutenones (BCBs) is reported. The delicate selection of dpppe or PMe3 as the ligand led to predictably divergent synthesis of a wide range of 1-naphthols and 2-naphthols without C2 and C3 substituents, respectively, from BCBs and potassium alkynyltrifluoroborate, and the increase in the amount of PMe3 resulted in tandem reaction of 2 equiv of BCB with the borate to afford 3,4,5-trisubstituted 2-naphthols. The fabulous ligand effect resulted in the facile and unique construction of multisubstituted naphthols with well-controlled regioselectivity and a high degree of structural diversity.
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Affiliation(s)
- Yuhang Wang
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Peng Ma
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Ning Ma
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Jianhui Wang
- Department of Chemistry, School of Science, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
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5
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Advances in Catalytic C–F Bond Activation and Transformation of Aromatic Fluorides. Catalysts 2022. [DOI: 10.3390/catal12121665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The activation and transformation of C–F bonds in fluoro-aromatics is a highly desirable process in organic chemistry. It provides synthetic methods/protocols for the generation of organic compounds possessing single or multiple C–F bonds, and effective catalytic systems for further study of the activation mode of inert chemical bonds. Due to the high polarity of the C–F bond and it having the highest bond energy in organics, C–F activation often faces considerable academic challenges. In this mini-review, the important research achievements in the activation and transformation of aromatic C–F bond, catalyzed by transition metal and metal-free systems, are presented.
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6
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Sokolova OO, Bower JF. An endo-Directing-Group Strategy Unlocks Enantioselective (3+1+2) Carbonylative Cycloadditions of Aminocyclopropanes. Angew Chem Int Ed Engl 2022; 61:e202205007. [PMID: 35611866 PMCID: PMC9401022 DOI: 10.1002/anie.202205007] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Indexed: 12/18/2022]
Abstract
An endo-directing group strategy enables enantioselective (3+1+2) cycloadditions that are triggered by carbonylative C-C bond activation of cyclopropanes. These processes are rare examples of cycloadditions where C-C bond oxidative addition is enantiodetermining, and the first where this is achieved within the context of a multicomponent (higher order) reaction design.
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Affiliation(s)
- Olga O Sokolova
- School of Chemistry, University of Bristol, Bristol, BS8 1TS, UK
| | - John F Bower
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
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7
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Sokolova OO, Bower J. An endo‐Directing‐Group Strategy Unlocks Enantioselective (3+1+2) Carbonylative Cycloadditions of Aminocyclopropanes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - John Bower
- University of Liverpool School of Chemistry L69 3BX Liverpool UNITED KINGDOM
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8
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Chen T, Wu Y, Han P, Gao J, Wu Y, Zhao J, Liang H, Liu Y, Liu Y. Nickel‐Catalyzed Ring Expansion of Cyclobutanones towards Indanones. Helv Chim Acta 2022. [DOI: 10.1002/hlca.202100184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tengyun Chen
- Jilin Provincial Key Laboratory of Carbon Fiber Development and Application College of Chemistry and Life Science Changchun University of Technology Changchun 130012 P. R. China
| | - Yunkai Wu
- Jilin Provincial Key Laboratory of Carbon Fiber Development and Application College of Chemistry and Life Science Changchun University of Technology Changchun 130012 P. R. China
| | - Peilin Han
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province Institute of Surface Micro and Nano Materials College of Chemical and Materials Engineering Xuchang University Xuchang Henan 461000 P. R. China
| | - Jiqiang Gao
- Jilin Provincial Key Laboratory of Carbon Fiber Development and Application College of Chemistry and Life Science Changchun University of Technology Changchun 130012 P. R. China
| | - Yuanqi Wu
- Jilin Provincial Key Laboratory of Carbon Fiber Development and Application College of Chemistry and Life Science Changchun University of Technology Changchun 130012 P. R. China
| | - Jinbo Zhao
- Jilin Provincial Key Laboratory of Carbon Fiber Development and Application College of Chemistry and Life Science Changchun University of Technology Changchun 130012 P. R. China
| | - Haotian Liang
- Jilin Provincial Key Laboratory of Carbon Fiber Development and Application College of Chemistry and Life Science Changchun University of Technology Changchun 130012 P. R. China
| | - Yongsheng Liu
- Jilin Provincial Key Laboratory of Carbon Fiber Development and Application College of Chemistry and Life Science Changchun University of Technology Changchun 130012 P. R. China
| | - Yu Liu
- Jilin Provincial Key Laboratory of Carbon Fiber Development and Application College of Chemistry and Life Science Changchun University of Technology Changchun 130012 P. R. China
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9
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Jiang B, Shi SL. Recent Progress in Upgrading of Alcohol and Amine via Asymmetric Dehydrogenative Coupling. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202207002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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10
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Wang J, Lv Y, Shang Y, Cui Z, Wang KH, Huang D, Hu Y. Research Progress of Reactions Participated by α-Hydroxy Ketones. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202203007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Guo J, Liu Y, Lin X, Tang T, Wang B, Hu P, Zhao K, Song F, Shi Z. Site‐Selective C–C Cleavage of Benzocyclobutenones Enabled by a Blocking Strategy Using Nickel Catalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106709] [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)
- Jing‐Hong Guo
- College of Chemistry and Materials Science Sichuan Normal University Chengdu Sichan 610066 China
| | - Yu Liu
- College of Chemistry and Materials Science Sichuan Normal University Chengdu Sichan 610066 China
| | - Xin‐Cheng Lin
- Department of Chemistry Fudan University Shanghai 200433 China
| | - Tian‐Mu Tang
- College of Chemistry and Materials Science Sichuan Normal University Chengdu Sichan 610066 China
| | - Bi‐Qin Wang
- College of Chemistry and Materials Science Sichuan Normal University Chengdu Sichan 610066 China
| | - Ping Hu
- College of Chemistry and Materials Science Sichuan Normal University Chengdu Sichan 610066 China
| | - Ke‐Qing Zhao
- College of Chemistry and Materials Science Sichuan Normal University Chengdu Sichan 610066 China
| | - Feijie Song
- College of Chemistry and Materials Science Sichuan Normal University Chengdu Sichan 610066 China
| | - Zhang‐Jie Shi
- Department of Chemistry Fudan University Shanghai 200433 China
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12
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Cai Y, Shi SL. Enantioconvergent Arylation of Racemic Secondary Alcohols to Chiral Tertiary Alcohols Enabled by Nickel/N-Heterocyclic Carbene Catalysis. J Am Chem Soc 2021; 143:11963-11968. [PMID: 34324325 DOI: 10.1021/jacs.1c06614] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The direct upgrading reaction of simple and readily available achiral alcohols via C-H functionalization is an ideal strategy to prepare value-added chiral higher alcohols. Herein, we disclose the first enantioconvergent upgrading reaction of simple racemic secondary alcohols to enantioenriched tertiary alcohols. An N-heterocyclic carbene (NHC)-nickel catalyst was leveraged to enable this highly efficient formal asymmetric alcohol α-C-H arylation via a dehydrogenation using phenyl triflate as a mild oxidant followed by asymmetric addition of arylboronic esters to the transient ketones. Mechanistic studies and control experiments were conducted to reveal the possible reasons for the exceptional control over chemo- and enantioselectivity.
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Affiliation(s)
- Yuan Cai
- 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 Road, Shanghai 200032, China
| | - Shi-Liang Shi
- 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 Road, Shanghai 200032, China.,School of Pharmacy, Fudan University, Shanghai 201203, China
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13
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Guo JH, Liu Y, Lin XC, Tang TM, Wang BQ, Hu P, Zhao KQ, Song F, Shi ZJ. Site-Selective C-C Cleavage of Benzocyclobutenones Enabled by a Blocking Strategy Using Nickel Catalysis. Angew Chem Int Ed Engl 2021; 60:19079-19084. [PMID: 34187100 DOI: 10.1002/anie.202106709] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/22/2021] [Indexed: 12/29/2022]
Abstract
Controlling the chemo- and regioselectivity of transition-metal-catalyzed C-C activation remains a great challenge. The transformations of benzocyclobutenones (BCBs) usually involve the cleavage of C1-C2 bond. In this work, an unprecedented highly selective cleavage of C1-C8 bond with the insertion of alkynes is achieved by using blocking strategy via Ni catalysis, providing an efficient method for synthesis of 1,8-disubstituted naphthalenes. Notably, the blocking group could be readily removed after the transformation.
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Affiliation(s)
- Jing-Hong Guo
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichan, 610066, China
| | - Yu Liu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichan, 610066, China
| | - Xin-Cheng Lin
- Department of Chemistry, Fudan University, Shanghai, 200433, China
| | - Tian-Mu Tang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichan, 610066, China
| | - Bi-Qin Wang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichan, 610066, China
| | - Ping Hu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichan, 610066, China
| | - Ke-Qing Zhao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichan, 610066, China
| | - Feijie Song
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichan, 610066, China
| | - Zhang-Jie Shi
- Department of Chemistry, Fudan University, Shanghai, 200433, China
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14
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Doerksen RS, Hodík T, Hu G, Huynh NO, Shuler WG, Krische MJ. Ruthenium-Catalyzed Cycloadditions to Form Five-, Six-, and Seven-Membered Rings. Chem Rev 2021; 121:4045-4083. [PMID: 33576620 DOI: 10.1021/acs.chemrev.0c01133] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ruthenium-catalyzed cycloadditions to form five-, six-, and seven-membered rings are summarized, including applications in natural product total synthesis. Content is organized by ring size and reaction type. Coverage is limited to processes that involve formation of at least one C-C bond. Processes that are stoichiometric in ruthenium or exploit ruthenium as a Lewis acid (without intervention of organometallic intermediates), ring formations that occur through dehydrogenative condensation-reduction, σ-bond activation-initiated annulations that do not result in net reduction of bond multiplicity, and photochemically promoted ruthenium-catalyzed cycloadditions are not covered.
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Affiliation(s)
- Rosalie S Doerksen
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
| | - Tomáš Hodík
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
| | - Guanyu Hu
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
| | - Nancy O Huynh
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
| | - William G Shuler
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
| | - Michael J Krische
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
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15
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Chen Y, Wang X, He X, An Q, Zuo Z. Photocatalytic Dehydroxymethylative Arylation by Synergistic Cerium and Nickel Catalysis. J Am Chem Soc 2021; 143:4896-4902. [PMID: 33756079 DOI: 10.1021/jacs.1c00618] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Under mild reaction conditions with inexpensive cerium and nickel catalysts, easily accessible free alcohols can now be utilized as operationally simple and robust carbon pronucleophiles in selective C(sp3)-C(sp2) cross-couplings. Facilitated by automated high-throughput experimentation, sterically encumbered benzoate ligands have been identified for robust cerium complexes, enabling the synergistic cooperation of cerium catalysis in the emerging metallaphotoredox catalysis. A broad range of free alcohols and aromatic halides can be facilely employed in this transformation, representing a new paradigm for the C(sp3)-C(sp2) bond construction between free alcohols and aryl halides with the extrusion of formaldehyde. Moreover, mechanistic investigations have been conducted, leading to the identification of a tribenzoate cerium(III) complex as a viable intermediate.
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Affiliation(s)
- Yuegang Chen
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Xin Wang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Xu He
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Qing An
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Zhiwei Zuo
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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16
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Shuler WG, Parvathaneni SP, Rodriguez JB, Lewis TN, Berges AJ, Bardeen CJ, Krische MJ. Synthesis and Photophysical Properties of Soluble N-Doped Rubicenes via Ruthenium-Catalyzed Transfer Hydrogenative Benzannulation. Chemistry 2021; 27:4898-4902. [PMID: 33576516 DOI: 10.1002/chem.202100134] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Indexed: 11/10/2022]
Abstract
Ruthenium-catalyzed butadiene-mediated benzannulation enabled the first synthesis of 3,10-(di-tert-butyl)rubicene and its N-doped derivatives as well as preliminary studies on their photophysical properties. Unlike the parent rubicene and 3,10-(di-tert-butyl)rubicene, which adopt classical herringbone-type packing motifs in the solid state, the N-doped congener 7 b displayed columnar packing with an alternating co-facial arrangement of aromatic and heteroaromatic substructures.
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Affiliation(s)
- William G Shuler
- Department of Chemistry, University of Texas at Austin, 105 E 24th St. (A5300), Austin, TX, 78712-1167, USA
| | - Sai P Parvathaneni
- Department of Chemistry, University of Texas at Austin, 105 E 24th St. (A5300), Austin, TX, 78712-1167, USA
| | - Jacob B Rodriguez
- Department of Materials Science and Engineering, University of California, 501 Big Springs Road, Riverside, CA, 92521, USA
| | - Taylor N Lewis
- Department of Chemistry, University of California, 501 Big Springs Road, Riverside, CA, 92521, USA
| | - Adam J Berges
- Department of Chemistry, University of California, 501 Big Springs Road, Riverside, CA, 92521, USA
| | - Christopher J Bardeen
- Department of Materials Science and Engineering, University of California, 501 Big Springs Road, Riverside, CA, 92521, USA.,Department of Chemistry, University of California, 501 Big Springs Road, Riverside, CA, 92521, USA
| | - Michael J Krische
- Department of Chemistry, University of Texas at Austin, 105 E 24th St. (A5300), Austin, TX, 78712-1167, USA
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17
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Lu H, Zhao TT, Bai JH, Ye D, Xu PF, Wei H. Divergent Coupling of Benzocyclobutenones with Indoles via C-H and C-C Activations. Angew Chem Int Ed Engl 2020; 59:23537-23543. [PMID: 32896964 DOI: 10.1002/anie.202010244] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Indexed: 11/07/2022]
Abstract
Highly selective divergent coupling reactions of benzocyclobutenones and indoles, in which the chemoselectivity is controlled by catalysts, are reported herein. The substrates undergo C2(indole)-C8(benzocyclobutenone) coupling to produce benzylated indoles and benzo[b]carbazoles in the Ni- and Ru-catalyzed reactions. A completely different selectivity pattern C2(indole)-C2(benzocyclobutenone) coupling to form arylated indoles is observed in the Rh-catalyzed reaction. Preliminary mechanistic studies suggest C-H and C-C activations in the reaction pathway. Synthetic utility of this protocol is demonstrated by the selective synthesis of three different types of carbazoles from the representative products.
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Affiliation(s)
- Hong Lu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710069, China
| | - Tian-Tian Zhao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Jin-Hua Bai
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710069, China
| | - Dan Ye
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710069, China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Hao Wei
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710069, China
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18
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Lu H, Zhao T, Bai J, Ye D, Xu P, Wei H. Divergent Coupling of Benzocyclobutenones with Indoles via C−H and C−C Activations. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010244] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Hong Lu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry & Materials Science Northwest University Xi'an 710069 China
| | - Tian‐Tian Zhao
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Jin‐Hua Bai
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry & Materials Science Northwest University Xi'an 710069 China
| | - Dan Ye
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry & Materials Science Northwest University Xi'an 710069 China
| | - Peng‐Fei Xu
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Hao Wei
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry & Materials Science Northwest University Xi'an 710069 China
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19
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Abstract
This article reviews synthetic transformations involving cleavage of a carbon-carbon bond of a four-membered ring, with a particular focus on the examples reported during the period from 2011 to the end of 2019. Most significant is the progress of catalytic reactions involving oxidative addition of carbon-carbon bonds onto transition metals or β-carbon elimination of transition metal alkoxides. When they are looked at from synthetic perspectives, they offer unique and efficient methods to build complex natural products and structures that are difficult to construct by conventional methods. On the other hand, β-scission of radical intermediates has also attracted increasing attention as an alternative elementary step to cleave carbon-carbon bonds. Its site-selectivity is often complementary to that of transition metal-catalyzed reactions. In addition, Lewis acid-mediated and thermally induced ring-opening of cyclobutanone derivatives has garnered renewed attention. On the whole, these examples demonstrate unique synthetic potentials of structurally strained four-membered ring compounds for the construction of organic skeletons.
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Affiliation(s)
- Masahiro Murakami
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto 615-8510, Japan
| | - Naoki Ishida
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto 615-8510, Japan
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20
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da Silva Júnior EN, de Carvalho RL, Almeida RG, Rosa LG, Fantuzzi F, Rogge T, Costa PMS, Pessoa C, Jacob C, Ackermann L. Ruthenium(II)-Catalyzed Double Annulation of Quinones: Step-Economical Access to Valuable Bioactive Compounds. Chemistry 2020; 26:10981-10986. [PMID: 32212283 DOI: 10.1002/chem.202001434] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Indexed: 12/11/2022]
Abstract
Double ruthenium(II)-catalyzed alkyne annulations of quinones were accomplished. Thus, a strategy is reported that provides step-economical access to valuable quinones with a wide range of applications. C-H/N-H activations for alkyne annulations of naphthoquinones provided challenging polycyclic quinoidal compounds by forming four new bonds in one step. The singular power of the thus-obtained compounds was reflected by their antileukemic activity.
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Affiliation(s)
- Eufrânio N da Silva Júnior
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany.,Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais, UFMG, 31270-901, Belo Horizonte, MG, Brazil
| | - Renato L de Carvalho
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany.,Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais, UFMG, 31270-901, Belo Horizonte, MG, Brazil
| | - Renata G Almeida
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais, UFMG, 31270-901, Belo Horizonte, MG, Brazil
| | - Luisa G Rosa
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais, UFMG, 31270-901, Belo Horizonte, MG, Brazil
| | - Felipe Fantuzzi
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Torben Rogge
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Pedro M S Costa
- Department of Physiology and Pharmacology, Federal University of Ceará, Fortaleza, CE, 60430-270, Brazil
| | - Claudia Pessoa
- Department of Physiology and Pharmacology, Federal University of Ceará, Fortaleza, CE, 60430-270, Brazil
| | - Claus Jacob
- Division of Bioorganic Chemistry, School of Pharmacy, University of Saarland, 66123, Saarbrücken, Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany.,German Center for Cardiovascular Research (DZHK), Potsdamer Strasse 58, 10785, Berlin, Germany
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21
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Rhodium(II)-catalyzed multicomponent assembly of α,α,α-trisubstituted esters via formal insertion of O-C(sp 3)-C(sp 2) into C-C bonds. Nat Commun 2020; 11:4219. [PMID: 32839446 PMCID: PMC7445163 DOI: 10.1038/s41467-020-17990-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 07/28/2020] [Indexed: 11/18/2022] Open
Abstract
The direct cleavage of C(CO)−C single bonds, delivering otherwise inaccessible compounds, is a significant challenge. Although the transition metal-catalyzed insertion of functional groups into C(CO)−C bonds has been studied, strained ketone substrates or chelating assistance were commonly required. In this article, we describe a rhodium(II)-catalyzed three-component reaction of 1,3-diones, diazoesters, and N,N-dimethylformamide (DMF), leading to an unusual formal insertion of O–C(sp3)–C(sp2) into unstrained C(CO)−C bonds. This procedure provides a rapid entry to a gamut of otherwise inaccessible α,α,α-trisubstituted esters/amide from relatively simple substrates in a straightforward manner. 55 examples of highly decorated products demonstrate the broad functional group tolerance and substrate scope. The combination of control experiments and isotope-labeling reactions support that O, C(sp3), and C(sp2) units derive from 1,3-diones, diazoesters, and DMF, respectively. The direct cleavage of C(CO)−C single bonds is usually restricted to strained ketone substrates or to chelating assistance. Here, the authors show a rhodium(II)-catalyzed three-component reaction of 1,3-diones, diazoesters, and DMF, leading to an unusual formal insertion of O–C(sp3)–C(sp2) into unstrained C(CO)–C bonds.
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22
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Mahecha-Mahecha C, Lecornué F, Akinari S, Charote T, Gamba-Sánchez D, Ohwada T, Thibaudeau S. Sequential Suzuki-Miyaura Coupling/Lewis Acid-Catalyzed Cyclization: An Entry to Functionalized Cycloalkane-Fused Naphthalenes. Org Lett 2020; 22:6267-6271. [PMID: 32806180 DOI: 10.1021/acs.orglett.0c02020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Functionalized angular cycloalkane-fused naphthalenes were prepared using a two-step process involving a Pd-catalyzed Suzuki-Miyaura coupling of aryl pinacol boronates and vinyl triflates followed by a boron trifluoride etherate-catalyzed cycloaromatization.
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Affiliation(s)
- Camilo Mahecha-Mahecha
- Université de Poitiers, UMR-CNRS 7285, IC2MP, Equipe Synthèse Organique-Groupe Superacide, 4 rue Michel Brunet, TSA 51106, 86073 Poitiers Cedex 9, France.,Laboratory of Organic Synthesis, Bio and Organocatalysis, Chemistry Department, Universidad de los Andes, Bogotá, Colombia
| | - Frédéric Lecornué
- Université de Poitiers, UMR-CNRS 7285, IC2MP, Equipe Synthèse Organique-Groupe Superacide, 4 rue Michel Brunet, TSA 51106, 86073 Poitiers Cedex 9, France
| | - Sumita Akinari
- Université de Poitiers, UMR-CNRS 7285, IC2MP, Equipe Synthèse Organique-Groupe Superacide, 4 rue Michel Brunet, TSA 51106, 86073 Poitiers Cedex 9, France.,Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan
| | - Thomas Charote
- Université de Poitiers, UMR-CNRS 7285, IC2MP, Equipe Synthèse Organique-Groupe Superacide, 4 rue Michel Brunet, TSA 51106, 86073 Poitiers Cedex 9, France
| | - Diego Gamba-Sánchez
- Laboratory of Organic Synthesis, Bio and Organocatalysis, Chemistry Department, Universidad de los Andes, Bogotá, Colombia
| | - Tomohiko Ohwada
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan
| | - Sébastien Thibaudeau
- Université de Poitiers, UMR-CNRS 7285, IC2MP, Equipe Synthèse Organique-Groupe Superacide, 4 rue Michel Brunet, TSA 51106, 86073 Poitiers Cedex 9, France
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23
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Yan P, Zhou Q, Chen J, Lu P. Controllable Skeleton Rearrangement of
3‐Substituted
Cyclobutanones under Basic Conditions
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.201900510] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Peng Yan
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University 220 Handan Lu Shanghai 200433 China
| | - Qiang Zhou
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University 220 Handan Lu Shanghai 200433 China
| | - Jun Chen
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University 220 Handan Lu Shanghai 200433 China
| | - Ping Lu
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University 220 Handan Lu Shanghai 200433 China
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24
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Suravarapu SR, Parvathaneni SP, Bender JA, Roberts ST, Krische MJ. Benzannulation through Ruthenium(0)-Catalyzed Transfer Hydrogenative Cycloaddition: Precision Synthesis and Photophysical Characterization of Soluble Diindenoperylenes. Chemistry 2020; 26:7504-7510. [PMID: 32271965 DOI: 10.1002/chem.202001731] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Indexed: 01/10/2023]
Abstract
The first application of ruthenium(0)-catalyzed 1,2-dione-diyne [2+2+2] cycloaddition to PAH construction is achieved by the precision synthesis of soluble diindenoperylenes (DIPs), the electronic structures of which were investigated using steady-state absorption and emission, transient absorption, cyclic voltammetry and time-dependent density functional theory.
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Affiliation(s)
- Sankar Rao Suravarapu
- Department of Chemistry, University of Texas at Austin, 105 E 24th St. (A5300), Austin, TX, 78712-1167, USA
| | - Sai Prathima Parvathaneni
- Department of Chemistry, University of Texas at Austin, 105 E 24th St. (A5300), Austin, TX, 78712-1167, USA
| | - Jon A Bender
- Department of Chemistry, University of Texas at Austin, 105 E 24th St. (A5300), Austin, TX, 78712-1167, USA
| | - Sean T Roberts
- Department of Chemistry, University of Texas at Austin, 105 E 24th St. (A5300), Austin, TX, 78712-1167, USA
| | - Michael J Krische
- Department of Chemistry, University of Texas at Austin, 105 E 24th St. (A5300), Austin, TX, 78712-1167, USA
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25
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Tan Z, Ci C, Yang J, Wu Y, Cao L, Jiang H, Zhang M. Catalytic Conversion of N-Heteroaromatics to Functionalized Arylamines by Merging Hydrogen Transfer and Selective Coupling. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00394] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Zhenda Tan
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People’s Republic of China
| | - Chenggang Ci
- Key Laboratory of Computational Catalytic Chemistry of Guizhou Province, Department of Chemistry and Chemical Engineering, Qiannan Normal University for Nationalities, Duyun 558000, People’s Republic of China
| | - Jian Yang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People’s Republic of China
| | - Yang Wu
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People’s Republic of China
| | - Liang Cao
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People’s Republic of China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People’s Republic of China
| | - Min Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People’s Republic of China
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26
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27
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Wood JM, da Silva Júnior EN, Bower JF. Rh-Catalyzed [2 + 2 + 2] Cycloadditions with Benzoquinones: De Novo Access to Naphthoquinones for Lignan and Type II Polyketide Synthesis. Org Lett 2020; 22:265-269. [PMID: 31850764 DOI: 10.1021/acs.orglett.9b04266] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The first examples of Rh-catalyzed [2 + 2 + 2] cycloadditions between diynes and benzoquinones are described. The method enables de novo and step-economical access to challenging naphthoquinones that are of relevance to lignan and type II polyketide synthesis. The value of the chemistry is demonstrated by a short total synthesis of justicidone.
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Affiliation(s)
- James M Wood
- School of Chemistry , University of Bristol , Bristol , BS8 1TS , United Kingdom
| | - Eufrânio N da Silva Júnior
- Institute of Exact Sciences, Department of Chemistry , Federal University of Minas Gerais , Belo Horizonte , MG 31270-901 , Brazil
| | - John F Bower
- School of Chemistry , University of Bristol , Bristol , BS8 1TS , United Kingdom
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28
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Yu Y, Wang XY, Peng JY, Liu T, Zhao YL. Copper-catalyzed cascade cyclization reaction of 3-aminocyclobutenones with electron-deficient internal alkynes: synthesis of fully substituted indoles. Chem Commun (Camb) 2020; 56:9815-9818. [DOI: 10.1039/d0cc00512f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel copper-catalyzed cascade cyclization reaction of 3-aminocyclobutenones with electron-deficient internal alkynes has been developed. This reaction provides a new method for the synthesis of fully substituted indoles by formation of four new bonds and two rings in a single step.
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Affiliation(s)
- Yang Yu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Xin-Yu Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Ju-Yin Peng
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Tao Liu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Yu-Long Zhao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- China
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29
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Khatri HR, Han C, Luong E, Pan X, Adam AT, Alshammari MD, Shao Y, Colby DA. Controlling the Cleavage of Carbon-Carbon Bonds To Generate α,α-Difluorobenzyl Carbanions for the Construction of Difluoromethylbenzenes. J Org Chem 2019; 84:11665-11675. [PMID: 31449418 PMCID: PMC8262649 DOI: 10.1021/acs.joc.9b01595] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Controlling the cleavage of carbon-carbon bonds during a chemical reaction is a substantial challenge; however, synthetic methods that accomplish this objective produce valuable and often unexplored reactivity. We have designed a mild process to generate α,α-difluorobenzyl carbanions in the presence of potassium carbonate by exploiting the cleavage of C-C bonds during the release of trifluoroacetate. The initiating reagent is potassium carbonate, which represents an improvement over existing protocols that require a strong base. Fragmentation studies across substituted arenes and heteroarenes were conducted along with computational analyses to elucidate reactivity trends. Furthermore, the mildly generated α,α-difluorobenzyl carbanions from electron-deficient aromatics and heteroaromatic rings can react with aldehydes to create derivatives of difluoromethylbenzenes, which are valuable synthetic targets.
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Affiliation(s)
- Hari R. Khatri
- Department of BioMolecular Sciences, University of Mississippi, University, Mississippi 38677, United States
| | - Changho Han
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana 47907, United States
| | - Erica Luong
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Xiaoliang Pan
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Amna T. Adam
- Department of BioMolecular Sciences, University of Mississippi, University, Mississippi 38677, United States
| | - Maali D. Alshammari
- Department of BioMolecular Sciences, University of Mississippi, University, Mississippi 38677, United States
| | - Yihan Shao
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - David A. Colby
- Department of BioMolecular Sciences, University of Mississippi, University, Mississippi 38677, United States
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30
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Armstrong RJ, Akhtar WM, Young TA, Duarte F, Donohoe TJ. Catalytic Asymmetric Synthesis of Cyclohexanes by Hydrogen Borrowing Annulations. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907514] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | - Wasim M. Akhtar
- Chemistry Research LaboratoryUniversity of Oxford Oxford OX1 3TA UK
| | - Tom A. Young
- Chemistry Research LaboratoryUniversity of Oxford Oxford OX1 3TA UK
| | - Fernanda Duarte
- Chemistry Research LaboratoryUniversity of Oxford Oxford OX1 3TA UK
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31
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Armstrong RJ, Akhtar WM, Young TA, Duarte F, Donohoe TJ. Catalytic Asymmetric Synthesis of Cyclohexanes by Hydrogen Borrowing Annulations. Angew Chem Int Ed Engl 2019; 58:12558-12562. [PMID: 31265208 PMCID: PMC6771629 DOI: 10.1002/anie.201907514] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Indexed: 12/17/2022]
Abstract
Hydrogen borrowing catalysis serves as a powerful alternative to enolate alkylation, enabling the direct coupling of ketones with unactivated alcohols. However, to date, methods that enable control over the absolute stereochemical outcome of such a process have remained elusive. Here we report a catalytic asymmetric method for the synthesis of enantioenriched cyclohexanes from 1,5‐diols via hydrogen borrowing catalysis. This reaction is mediated by the addition of a chiral iridium(I) complex, which is able to impart high levels of enantioselectivity upon the process. A series of enantioenriched cyclohexanes have been prepared and the mode of enantioinduction has been probed by a combination of experimental and DFT studies.
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Affiliation(s)
- Roly J Armstrong
- Chemistry Research Laboratory, University of Oxford, Oxford, OX1 3TA, UK
| | - Wasim M Akhtar
- Chemistry Research Laboratory, University of Oxford, Oxford, OX1 3TA, UK
| | - Tom A Young
- Chemistry Research Laboratory, University of Oxford, Oxford, OX1 3TA, UK
| | - Fernanda Duarte
- Chemistry Research Laboratory, University of Oxford, Oxford, OX1 3TA, UK
| | - Timothy J Donohoe
- Chemistry Research Laboratory, University of Oxford, Oxford, OX1 3TA, UK
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32
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Wang Z, Dong W, Sun B, Yu Q, Zhang FL. Cascade reaction for the synthesis of polycyclic aromatic hydrocarbons via transient directing group strategy. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.06.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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33
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Zhang H, Luo Y, Li D, Yao Q, Dong S, Liu X, Feng X. Enantioselective Synthesis of 4-Hydroxy-dihydrocoumarins via Catalytic Ring Opening/Cycloaddition of Cyclobutenones. Org Lett 2019; 21:2388-2392. [PMID: 30900904 DOI: 10.1021/acs.orglett.9b00670] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A highly diastereo- and enantioselective ring-opening/cycloaddition reaction of cyclobutenones with 2-hydroxyacetophenones or salicylaldehyde was achieved by employing a chiral N,N'-dioxide-scandium(III) complex as the catalyst. It provided various 3-phenylvinyl-4-hydroxy-dihydrocoumarins in good yields (up to 92%), high enantioselectivities (up to 93% ee), and excellent diastereoselectivities (>19:1 dr). Moreover, a possible catalytic cycle was proposed based on the control experiments and previous reports.
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Affiliation(s)
- Hang Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Yao Luo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Dawei Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Qian Yao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
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34
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Liu S, Zhang T, Zhu L, Zhong K, Gong J, Yang Z, Bai R, Lan Y. Retro-metal-ene versus retro-Aldol: mechanistic insight into Rh-catalysed formal [3+2] cycloaddition. Chem Commun (Camb) 2018; 54:13551-13554. [PMID: 30444245 DOI: 10.1039/c8cc08335e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Theoretical calculations have been performed to investigate the mechanism and stereoselectivity of rhodium-catalysed intramolecular [3+2] cycloaddition for construction of a substituted hexahydropentalene complex. A new C-C bond cleavage mechanism, retro-Aldol-type, is proposed and verified for this Rh-catalysed [3+2] cycloaddition reaction.
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Affiliation(s)
- Song Liu
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, China.
| | - Tao Zhang
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, China.
| | - Lei Zhu
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, China.
| | - Kangbao Zhong
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, China.
| | - Jianxian Gong
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China. and State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry and the Peking University, Beijing 100871, China
| | - Zhen Yang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China. and State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry and the Peking University, Beijing 100871, China
| | - Ruopeng Bai
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, China.
| | - Yu Lan
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, China. and College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
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