1
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Cheng Z, Zhang J, Li C, Li X, Chen P, Liu G. Copper-Catalyzed sp 2 C-H Arylation and Alkynylation of Allenes via Hydrogen Atom Abstraction. J Am Chem Soc 2024; 146:24689-24698. [PMID: 39167590 DOI: 10.1021/jacs.4c09324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
Development of methods for the sp2 C-H transformations of allenes has received much attention, and it presents a powerful tool for the synthesis of complicated allene-containing bioactive molecules. With a copper-catalyzed radical relay, sp2 allenic C-H arylation and alkynylation were established herein, using various aryl boronic acids and trimethoxysilyl-substituted alkynes as carbon nucleophiles and using electrophilic N-F reagents as nitrogen-centered radical precursors. These methods featured excellent site selectivity to deliver fully substituted allenes efficiently. Moreover, with silyl-substituted allenes as substrates, a subsequent dual sp2 C-H functionalization process was established as well, which allowed for the divergent synthesis of multifunctionalized allenes, significantly expanding their chemical spaces.
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Affiliation(s)
- Zhongming Cheng
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Jiajun Zhang
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Can Li
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Xiang Li
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Pinhong Chen
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Guosheng Liu
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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2
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Cui J, Wang X, Zeng R. Directed copper-catalyzed C-H functionalization of unactivated olefins with azodicarbonamide compounds. RSC Adv 2024; 14:27475-27480. [PMID: 39221125 PMCID: PMC11359497 DOI: 10.1039/d4ra04113e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Accepted: 08/05/2024] [Indexed: 09/04/2024] Open
Abstract
The copper-catalyzed strategy employing the 8-aminoquinoline directing group has proven to be a highly advantageous approach for functionalizing C-H bonds. In this study, we present the successful application of this strategy to accomplish Heck-type coupling reactions and construct β-lactam skeletons, simultaneously introducing a unique cyano functional group. The resulting Heck-type coupling products demonstrate good stereo- and region-selectivity. Initial mechanistic investigations indicate that the reaction proceeds via a radical coupling mechanism, exhibiting a wide substrate scope and delivering good yields.
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Affiliation(s)
- Jing Cui
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
| | - Xiaoya Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
| | - Runsheng Zeng
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
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3
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Guerrero M, Rentería-Gómez Á, Das D, Gutierrez O. Fe-Catalyzed Fluoroalkyl(hetero)arylation of Vinyl Azaarenes: Rapid and Modular Synthesis of Unsymmetrical 1,1-Bis(hetero)arylalkanes. Org Lett 2024; 26:7015-7020. [PMID: 39141436 PMCID: PMC11348425 DOI: 10.1021/acs.orglett.4c02515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2024] [Revised: 08/05/2024] [Accepted: 08/08/2024] [Indexed: 08/16/2024]
Abstract
In contrast to transition-metal-catalyzed difunctionalization of activated alkenes, selective alkylarylation of vinyl azaarenes is underdeveloped. Consequently, the lack of modular and rapid syntheses of 1,1-bis(hetero)arylalkanes limits their exploration in medicinal chemistry. Herein we report a protocol using commercially available iron salts, bisphosphine ligands, fluoroalkyl halides, and Grignard reagents that enables the selective 1,2-fluoroalkyl(hetero)arylation of vinyl azaarenes. We demonstrate the versatility and robustness of the method through the selective synthesis of a range of unsymmetrical 1,1-bis(hetero)arylalkenes, including pyridine N-oxides, triazoles, pyrazines, carbazoles, indazoles, and 1,2-azaborines. Mechanistic insights from experimental and computational investigations support a radical pathway and provide insights into the role of non-covalent interactions in iron catalysis.
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Affiliation(s)
| | | | - Deborshee Das
- Department of Chemistry, Texas
A&M University, College
Station, Texas 77843, United States
| | - Osvaldo Gutierrez
- Department of Chemistry, Texas
A&M University, College
Station, Texas 77843, United States
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4
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Kashyap S, Singh B, Ghorai MK. Magic Blue-Initiated S N2-Type Ring Opening of Activated Aziridines: Friedel-Crafts-Type Alkylation of Electron-Rich Arenes/Heteroarenes. J Org Chem 2024; 89:11429-11445. [PMID: 39088802 DOI: 10.1021/acs.joc.4c01101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2024]
Abstract
A transition metal-free, atom-economical, and highly stereospecific synthetic approach to Friedel-Crafts-type alkylation of arenes/heteroarenes has been developed. The protocol involves the catalytic aminium radical-cation salt (Magic Blue)-initiated SN2-type nucleophilic ring opening of activated aziridines with arenes/heteroarenes to give the corresponding 2,2-diarylethylamines up to 99% yield and 85% ee (for nonracemic aziridines) in a very short reaction time. Moreover, on reaction with 1,3-dimethylindole and benzofuran, aziridines undergo domino-ring-opening cyclization (DROC) to give the various biologically significant heterocyclic scaffolds in moderate to good yields.
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Affiliation(s)
- Suraj Kashyap
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Bharat Singh
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Manas K Ghorai
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
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5
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Mukherjee U, Shah JA, Musaev DG, Ngai MY. Harnessing Bromo/Acyloxy Transposition (BrAcT) and Excited-State Copper Catalysis for Styrene Difunctionalization. J Am Chem Soc 2024; 146:21271-21279. [PMID: 39042434 DOI: 10.1021/jacs.4c08984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
1,2-Difunctionalization of styrenes, adding two distinct functional groups across the C═C double bond, has emerged as a powerful tool for enhancing molecular complexity. Herein, we report the development of a regioconvergent β-acyloxylation-α-ketonylation of styrenes through bromo/acyloxy transposition (BrAcT) and excited-state copper catalysis. This approach is amenable to gram-scale synthesis and tolerates a wide range of functional groups and complex molecular frameworks, including derivatives of natural products and marketed drugs. Our experimental and computational studies suggest a unique mechanism featuring a dynamic, ionic BrAcT process and excited-state copper-catalyzed redox reactions. We anticipate that this BrAcT process could serve as a broadly applicable and versatile strategy for β-acyloxylation-α-functionalization of styrenes, creating valuable intermediates for preparing new pharmaceuticals, agrochemicals, and functional materials.
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Affiliation(s)
- Upasana Mukherjee
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
| | - Jagrut A Shah
- Department of Chemistry, State University of New York, Stony Brook, New York 11794, United States
| | - Djamaladdin G Musaev
- Cherry L. Emerson Center for Scientific Computation, and Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Ming-Yu Ngai
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
- Department of Chemistry, State University of New York, Stony Brook, New York 11794, United States
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6
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Derat E, Masson G, Claraz A. Electrochemically-Driven 1,4-Aryl Migration via Radical Fluoromethylation of N-Allylbenzamides: a Straightforward Access to Functionalized β-Arylethylamines. Angew Chem Int Ed Engl 2024; 63:e202406017. [PMID: 38687085 DOI: 10.1002/anie.202406017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 04/26/2024] [Accepted: 04/29/2024] [Indexed: 05/02/2024]
Abstract
An electrochemical radical Truce Smiles rearrangement of N-allylbenzamides is documented herein. The selective 1,4-aryl migration was triggered by the radical fluoromethylation of the alkene providing a direct route to fluoro derivatives of the highly privileged β-arylethylamine pharmacophore. This practical transformation utilizes readily available starting materials and employs an electrical current to drive the oxidative process under mild reaction conditions. It accommodates a variety of migratory aryl groups with different electronic properties and substitution patterns. Careful selection of the protecting group on the nitrogen atom of the N-allylbenzamide is crucial to outcompete the undesired 6-endo cyclization and achieve high level of selectivity towards the 1,4-aryl migration. DFT calculations support the reaction mechanism and unveil the origin of selectivity between the two competitive pathways.
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Affiliation(s)
- Etienne Derat
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, 4 Place Jussieu, CC 229, 75252, Paris Cedex 05, France
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles (ICSN), CNRS, Université Paris-Saclay, 1 Avenue de la Terrasse, 91198, Gif-sur-Yvette, France
- HitCat, Seqens-CNRS joint laboratory, Seqens'lab, 8 rue de Rouen, 78440, Porcheville, France
| | - Aurélie Claraz
- Institut de Chimie des Substances Naturelles (ICSN), CNRS, Université Paris-Saclay, 1 Avenue de la Terrasse, 91198, Gif-sur-Yvette, France
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7
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Chang Z, Zhang X, Lv H, Sun H, Lian Z. Three-Component Radical Cross-Coupling: Asymmetric Vicinal Sulfonyl-Esterification of Alkenes Involving Sulfur Dioxide. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309069. [PMID: 38532287 PMCID: PMC11186061 DOI: 10.1002/advs.202309069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 01/30/2024] [Indexed: 03/28/2024]
Abstract
A novel catalytic system for radical cross-coupling reactions based on copper and chiral Pyridyl-bis(imidazole) (PyBim) ligands is described. It overcomes the challenges of chemoselectivity and enantioselectivity, achieving a highly enantioselective vicinal sulfonyl-esterification reaction of alkenes involving sulfur dioxide. This strategy involves the use of earth-abundant metal catalyst, mild reaction conditions, a broad range of substrates (84 examples), high yields (up to 97% yield), and exceptional control over enantioselectivity. The reaction system is compatible with different types of radical precursors, including O-acylhydroxylamines, cycloketone oxime esters, aryldiazonium salts, and drug molecules. Chiral ligand PyBim is identified as particularly effective in achieving the desired high enantioselectivity. Mechanistic studies reveal that copper/PyBim system plays a vital role in C─O coupling, employing an outer-sphere model. In addition, the side arm effect of ligand is observed.
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Affiliation(s)
- Zhiqian Chang
- Department of DermatologyState Key Laboratory of Biotherapy and Cancer CenterWest China HospitalSichuan UniversityChengdu610041P. R. China
| | - Xuemei Zhang
- Department of DermatologyState Key Laboratory of Biotherapy and Cancer CenterWest China HospitalSichuan UniversityChengdu610041P. R. China
| | - Haiping Lv
- Department of DermatologyState Key Laboratory of Biotherapy and Cancer CenterWest China HospitalSichuan UniversityChengdu610041P. R. China
| | - Haotian Sun
- Department of DermatologyState Key Laboratory of Biotherapy and Cancer CenterWest China HospitalSichuan UniversityChengdu610041P. R. China
| | - Zhong Lian
- Department of DermatologyState Key Laboratory of Biotherapy and Cancer CenterWest China HospitalSichuan UniversityChengdu610041P. R. China
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8
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Hu SP, Gao CH, Liu TM, Miao BY, Wang HC, Yu W, Han B. Integrating Olefin Carboamination and Hofmann-Löffler-Freytag Reaction by Radical Deconstruction of Hydrazonyl N-N Bond. Angew Chem Int Ed Engl 2024; 63:e202400168. [PMID: 38380865 DOI: 10.1002/anie.202400168] [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: 01/03/2024] [Revised: 02/13/2024] [Accepted: 02/19/2024] [Indexed: 02/22/2024]
Abstract
As a type of elementary organic compounds containing N-N single bond, hydrazone involved chemical conversions are extremely extensive, but they are mainly limited to N2-retention and N2-removal modes. We report herein an unprecedented protocol for the realization of division utilization of the N2-moiety of hydrazone by a radical facilitated N-N bond deconstruction strategy. This new conversion mode enables the successful combination of alkene carboamination and Hofmann-Löffler-Freytag reaction by the reaction of N-homoallyl mesitylenesulfonyl hydrazones with ethyl difluoroiodoacetate under photocatalytic redox neutral conditions. Mechanism studies reveal that the reaction undergoes a radical relay involving addition, crucial remote imino-N migration and H-atom transfer. Consequently, a series of structurally significant ϵ-N-sulphonamide-α,α-difluoro-γ-amino acid esters are efficiently produced via continuous C-C bond and dual C-N bonds forging.
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Affiliation(s)
- Si-Pei Hu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Chen-Hui Gao
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Tu-Ming Liu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Bing-Yang Miao
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Hong-Chen Wang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Wei Yu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Bing Han
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
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9
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Jia X, Hao GL, Feng M, Jiang H, Wang SG, Huang L. Rh(III)-Catalyzed Diastereo- and Enantioselective Regiodivergent (Hetero)Arylamidation of (Homo)Allylic Sulfides. J Am Chem Soc 2024; 146:9768-9778. [PMID: 38545837 DOI: 10.1021/jacs.3c14041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
A rhodium-catalyzed 3-component conjunctive diastereo- and regioselective arylamidation of (homo)allylic sulfides, organon boronic acids, and dioxazolones is reported. These reactions deliver the 1,2-insertion and 2,1-insertion arylamidation products, respectively, for allylic sulfides and homoallylic sulfides. The enantioselective arylamidation of terminal and internal allylic sulfides is achieved, furnishing various 1,3-N,S compounds featuring one or two contiguous stereocenters in high yields and with high diastereo- and enantioselectivities. Mechanistic studies suggest a change in the turnover-limiting and selectivity-determining steps induced by the native and easily removable sulfide group.
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Affiliation(s)
- Xiaoyan Jia
- State Key Laboratory of Pulp and Paper Engineering and Key Laboratory of Functional Molecular Engineering of Guangdong Province in School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Gui-Lin Hao
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, P. R. China
| | - Mengxia Feng
- State Key Laboratory of Pulp and Paper Engineering and Key Laboratory of Functional Molecular Engineering of Guangdong Province in School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Huanfeng Jiang
- State Key Laboratory of Pulp and Paper Engineering and Key Laboratory of Functional Molecular Engineering of Guangdong Province in School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Shou-Guo Wang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, P. R. China
| | - Liangbin Huang
- State Key Laboratory of Pulp and Paper Engineering and Key Laboratory of Functional Molecular Engineering of Guangdong Province in School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
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10
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Hervieu C, Kirillova MS, Hu Y, Cuesta-Galisteo S, Merino E, Nevado C. Chiral arylsulfinylamides as reagents for visible light-mediated asymmetric alkene aminoarylations. Nat Chem 2024; 16:607-614. [PMID: 38228849 PMCID: PMC10997517 DOI: 10.1038/s41557-023-01414-8] [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: 11/15/2022] [Accepted: 11/28/2023] [Indexed: 01/18/2024]
Abstract
Two- or one-electron-mediated difunctionalizations of internal alkenes represent straightforward approaches to assemble molecular complexity by the simultaneous formation of two contiguous Csp3 stereocentres. Although racemic versions have been extensively explored, asymmetric variants, especially those involving open-shell C-centred radical species, are much more limited both in number and scope. Here we describe enantioenriched arylsulfinylamides as all-in-one reagents for the efficient asymmetric, intermolecular aminoarylation of alkenes. Under mild photoredox conditions, nitrogen addition of the arylsulfinylamide onto the double bond, followed by 1,4-translocation of the aromatic ring, produce, in a single operation, the corresponding aminoarylation adducts in enantiomerically enriched form. The sulfinyl group acts here as a traceless chiral auxiliary, as it is eliminated in situ under the mild reaction conditions. Optically pure β,β-diarylethylamines, aryl-α,β-ethylenediamines and α-aryl-β-aminoalcohols, prominent motifs in pharmaceuticals, bioactive natural products and ligands for transition metals, are thereby accessible with excellent levels of regio-, relative and absolute stereocontrol.
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Affiliation(s)
- Cédric Hervieu
- Department of Chemistry, University of Zurich, Zurich, Switzerland
| | | | - Yawen Hu
- Department of Chemistry, University of Zurich, Zurich, Switzerland
| | | | - Estíbaliz Merino
- Universidad de Alcalá, Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Andrés M. del Río (IQAR), Facultad de Farmacia, Madrid, Spain.
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain.
| | - Cristina Nevado
- Department of Chemistry, University of Zurich, Zurich, Switzerland.
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11
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Noten EA, Ng CH, Wolesensky RM, Stephenson CRJ. A general alkene aminoarylation enabled by N-centred radical reactivity of sulfinamides. Nat Chem 2024; 16:599-606. [PMID: 38228850 DOI: 10.1038/s41557-023-01404-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 11/17/2023] [Indexed: 01/18/2024]
Abstract
Arylethylamines are popular structural elements in bioactive molecules but are often made through a linear series of synthetic steps. A modular protocol to assemble arylethylamines from alkenes in one step would represent a useful advance in discovery chemistry, though current limitations preclude a generally applicable method. In this work we disclose an aminoarylation of alkenes using aryl sulfinamide reagents as bifunctional amine and arene donors. This reaction features excellent regioselectivity and diastereoselectivity on a variety of activated and unactivated substrates. Using a weakly oxidizing photocatalyst, a nitrogen radical is generated under mild conditions and adds to an alkene to form a new C-N bond. A desulfinylative aryl migration event known as a Smiles-Truce rearrangement follows to form a new C-C bond. In this manner, arylethylamines can be rapidly assembled from abundant alkene feedstocks. Moreover, chiral information from the sulfinamide can be transferred via rearrangement to a new carbon stereocentre in the product, thus advancing the development of traceless asymmetric alkene difunctionalization.
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Affiliation(s)
- Efrey A Noten
- Department of Chemistry, University of Michigan, Ann Arbor, MI, USA
| | - Cody H Ng
- Department of Chemistry, University of Michigan, Ann Arbor, MI, USA
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12
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Smorodina AA, Buev EM, Moshkin VS, Sosnovskikh VY. Tunable Approach to Diverse Phenethylamines via Reduction of 5-Aryloxazolidines with Triethylsilane. J Org Chem 2024; 89:2294-2305. [PMID: 38315159 DOI: 10.1021/acs.joc.3c02264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
A rapid pathway for the synthesis of various β-phenethylamines from aromatic aldehydes has been developed. Initially, a wide range of 5-aryloxazolidines was prepared via the [3 + 2] cycloaddition reaction of N-methylazomethine ylide derived from sarcosine and paraformaldehyde. The subsequent reduction of 5-aryloxazolidines with triethylsilane in trifluoroacetic acid yields three types of products: N,N-dimethylphenylethanolamines, N,N-dimethylphenethylamines, and tetrahydroisoquinolines, depending on the substituents in the aromatic ring and reaction conditions. Moreover, an additional step of oxazolidine hydrolysis or ring-opening with hydrogen cyanide allowed us to synthesize N-methyl- or N-methyl-N-(cyanomethyl)phenethylamines.
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Affiliation(s)
- Anastasia A Smorodina
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| | - Evgeny M Buev
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| | - Vladimir S Moshkin
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| | - Vyacheslav Y Sosnovskikh
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
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13
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Okumatsu D, Kiyokawa K, Bao Nguyen LT, Abe M, Minakata S. Photoexcitation of (diarylmethylene)amino benziodoxolones for alkylamination of styrene derivatives with carboxylic acids. Chem Sci 2024; 15:1068-1076. [PMID: 38239691 PMCID: PMC10793594 DOI: 10.1039/d3sc06090j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 12/12/2023] [Indexed: 01/22/2024] Open
Abstract
The alkylamination of alkenes using pristine carboxylic acids was achieved by the photoexcitation of (diarylmethylene)amino benziodoxolones (DABXs), which serve as both an oxidant and an aminating reagent (an iminyl radical precursor). The developed method is a simple photochemical reaction without the need for external photosensitizers and shows a broad substrate scope for aliphatic carboxylic acids leading to the formation of primary, secondary, and tertiary alkyl radicals, thus enabling the facile synthesis of various structurally complex amines. Mechanistic investigations including transient absorption spectroscopy measurements using a laser flash photolysis (LFP) method disclosed the unique photochemical reactivity of DABXs, which undergoes homolysis of their I-N bonds to give an iminyl radical and ortho-iodobenzoyloxy radical, the latter of which participates in the single-electron oxidation of carboxylates.
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Affiliation(s)
- Daichi Okumatsu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Yamadaoka 2-1 Suita Osaka 565-0871 Japan
| | - Kensuke Kiyokawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Yamadaoka 2-1 Suita Osaka 565-0871 Japan
| | - Linh Tran Bao Nguyen
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University Kagamiyama 1-3-1 Higashi-hiroshima Hiroshima 739-8526 Japan
| | - Manabu Abe
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University Kagamiyama 1-3-1 Higashi-hiroshima Hiroshima 739-8526 Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Yamadaoka 2-1 Suita Osaka 565-0871 Japan
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14
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Hwang Y, Wisniewski SR, Engle KM. Ligand-Enabled Carboamidation of Unactivated Alkenes through Enhanced Organonickel Electrophilicity. J Am Chem Soc 2023; 145:25293-25303. [PMID: 37938051 DOI: 10.1021/jacs.3c08855] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Catalytic carboamination of alkenes is a powerful synthetic tool to access valuable amine scaffolds from abundant and readily available alkenes. Although a number of synthetic approaches have been developed to achieve the rapid buildup of molecular complexity in this realm, the installation of diverse carbon and nitrogen functionalities onto unactivated alkenes remains underdeveloped. Here we present a ligand design approach to enable nickel-catalyzed three-component carboamidation that is applicable to a wide range of alkenyl amine derivatives via a tandem process involving alkyl migratory insertion and inner-sphere metal-nitrenoid transfer. With this method, various nitrogen functionalities can be installed into both internal and terminal unactivated alkenes, leading to differentially substituted diamines that would otherwise be difficult to access. Mechanistic investigations reveal that the tailored Ni(cod)(BQiPr) precatalyst modulates the electronic properties of the presumed π-alkene-nickel intermediate via the quinone ligand, leading to enhanced carbonickelation efficiency across the unactivated C═C bond. These findings establish nickel's ability to catalyze multicomponent carboamidation with a high efficiency and exquisite selectivity.
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Affiliation(s)
- Yeongyu Hwang
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Steven R Wisniewski
- Chemical Process Development Bristol Myers Squibb, New Brunswick, New Jersey 08903, United States
| | - Keary M Engle
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
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15
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Shi C, Guo L, Gao H, Luo M, Zhou X, Yang C, Xia W. Three-Component Aminoheteroarylation of Alkenes via Photoinduced EDA Complex Activation. Org Lett 2023; 25:7661-7666. [PMID: 37844134 DOI: 10.1021/acs.orglett.3c02988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
A catalyst-free approach for the multicomponent aminoheteroarylation reaction of alkenes with N-aminopyridinium salts and heteroarenes is herein described. The reaction shows good functional group tolerance and allows the generation of valuable β-heteroarylethylamines in satisfying yields. In this transformation, N-aminopyridinium salts and heteroarenes are utilized to generate electron donor-acceptor complexes, which undergo a single-electron transfer process upon light irradiation to form key amidyl radicals and heteroaryl radical cations. The amidyl radical is subsequently captured by alkenes, followed by a Minisci-type reaction to yield the desired β-heteroarylamines as products.
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Affiliation(s)
- Chengcheng Shi
- State Key Laboratory of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Lin Guo
- State Key Laboratory of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Han Gao
- State Key Laboratory of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Mengqi Luo
- State Key Laboratory of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Xiao Zhou
- State Key Laboratory of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Chao Yang
- State Key Laboratory of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Wujiong Xia
- State Key Laboratory of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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16
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Zhang W, Liu T, Ang HT, Luo P, Lei Z, Luo X, Koh MJ, Wu J. Modular and Practical 1,2-Aryl(Alkenyl) Heteroatom Functionalization of Alkenes through Iron/Photoredox Dual Catalysis. Angew Chem Int Ed Engl 2023; 62:e202310978. [PMID: 37699857 DOI: 10.1002/anie.202310978] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/09/2023] [Accepted: 09/11/2023] [Indexed: 09/14/2023]
Abstract
Efficient methods for synthesizing 1,2-aryl(alkenyl) heteroatomic cores, encompassing heteroatoms such as nitrogen, oxygen, sulfur, and halogens, are of significant importance in medicinal chemistry and pharmaceutical research. In this study, we present a mild, versatile and practical photoredox/iron dual catalytic system that enables access to highly privileged 1,2-aryl(alkenyl) heteroatomic pharmacophores with exceptional efficiency and site selectivity. Our approach exhibits an extensive scope, allowing for the direct utilization of a wide range of commodity or commercially available (hetero)arenes as well as activated and unactivated alkenes with diverse functional groups, drug scaffolds, and natural product motifs as substrates. By merging iron catalysis with the photoredox cycle, a vast array of alkene 1,2-aryl(alkenyl) functionalization products that incorporate a neighboring azido, amino, halo, thiocyano and nitrooxy group were secured. The scalability and ability to rapid synthesize numerous bioactive small molecules from readily available starting materials highlight the utility of this protocol.
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Affiliation(s)
- Weigang Zhang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Tao Liu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Hwee Ting Ang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Penghao Luo
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Zhexuan Lei
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Xiaohua Luo
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Ming Joo Koh
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Jie Wu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
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17
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Pozhydaiev V, Muller C, Moran J, Lebœuf D. Catalytic Synthesis of β-(Hetero)arylethylamines: Modern Strategies and Advances. Angew Chem Int Ed Engl 2023; 62:e202309289. [PMID: 37599269 DOI: 10.1002/anie.202309289] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/18/2023] [Accepted: 08/19/2023] [Indexed: 08/22/2023]
Abstract
β-(Hetero)arylethylamines appear in a myriad of pharmaceuticals due to their broad spectrum of biological properties, making them prime candidates for drug discovery. Conventional methods for their preparation often require engineered substrates that limit the flexibility of the synthetic routes and the diversity of compounds that can be accessed. Consequently, methods that provide rapid and versatile access to those scaffolds remain limited. To overcome these challenges, synthetic chemists have designed innovative and modular strategies to access the β-(hetero)arylethylamine motif, paving the way for their more extensive use in future pharmaceuticals. This review outlines recent progresses in the synthesis of (hetero)arylethylamines and emphasizes how these innovations have enabled new levels of molecular complexity, selectivity, and practicality.
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Affiliation(s)
- Valentyn Pozhydaiev
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg, 8 Allée Gaspard Monge, 67000, Strasbourg, France
| | - Cyprien Muller
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg, 8 Allée Gaspard Monge, 67000, Strasbourg, France
| | - Joseph Moran
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg, 8 Allée Gaspard Monge, 67000, Strasbourg, France
- Institut Universitaire de France (IUF), 75005, Paris, France
| | - David Lebœuf
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg, 8 Allée Gaspard Monge, 67000, Strasbourg, France
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18
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Liu S, Wang SL, Wan J, Peng S, Zhang JR, Ding HJ, Zhang B, Ni HL, Cao P, Hu P, Wang BQ, Chen B. Nickel-Catalyzed Reductive Cross-Coupling of Aziridines and Allylic Chlorides. Org Lett 2023; 25:6582-6586. [PMID: 37642345 DOI: 10.1021/acs.orglett.3c02399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
A nickel-catalyzed reductive cross-coupling of aziridines and allylic chlorides was realized by using manganese metal as the reducing agent. This protocol afforded a convenient approach to obtain β-allyl-substituted arylethylamines bearing various functional groups. The utility of this reaction was also demonstrated by scale-up preparation and diverse transformations, including the synthesis of Baclofen and several bioactive molecular motifs.
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Affiliation(s)
- Shuai Liu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
| | - Sen-Lin Wang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
| | - Jie Wan
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
| | - Shuang Peng
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
| | - Jie-Rui Zhang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
| | - Hua-Jiao Ding
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
| | - Bin Zhang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
| | - Hai-Liang Ni
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
| | - Peng Cao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
| | - Ping Hu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
| | - Bi-Qin Wang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
| | - Bin Chen
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
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19
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Bauer T, Hakim YZ, Morawska P. Recent Advances in the Enantioselective Radical Reactions. Molecules 2023; 28:6252. [PMID: 37687085 PMCID: PMC10489153 DOI: 10.3390/molecules28176252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/20/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023] Open
Abstract
The review covers research published since 2017 and is focused on enantioselective synthesis using radical reactions. It describes recent approaches to the asymmetric synthesis of chiral molecules based on the application of the metal catalysis, dual metal and organocatalysis and finally, pure organocatalysis including enzyme catalysis. This review focuses on the synthetic aspects of the methodology and tries to show which compounds can be obtained in enantiomerically enriched forms.
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Affiliation(s)
- Tomasz Bauer
- Faculty of Chemistry, University of Warsaw, L Pasteura 1, PL-02-093 Warsaw, Poland; (Y.Z.H.); (P.M.)
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20
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Qi XK, Zheng MJ, Yang C, Zhao Y, Guo L, Xia W. Metal-Free Amino(hetero)arylation and Aminosulfonylation of Alkenes Enabled by Photoinduced Energy Transfer. J Am Chem Soc 2023; 145:16630-16641. [PMID: 37486736 DOI: 10.1021/jacs.3c04073] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
β-(Hetero)arylethylamines are privileged structural motifs found in many high-value organic molecules, including pharmaceuticals and natural products. To construct these important molecular skeletons, previous methods are mainly achieved by amino(hetero)arylation reaction with the aid of transition metals and preactivated substrates. Herein, we report a metal-free and photoinduced intermolecular amino(hetero)arylation reaction for the single-step installation of both (hetero)aryl and iminyl groups across alkenes in an efficient and regioselective manner. This method shows broad scope (up to 124 examples) and excellent tolerance of various olefins─from the simplest ethylene to complex multisubstituted alkenes can all participate in the reaction. Furthermore, aminosulfonylation of alkenes can be also conducted in the presence of sodium bisulfite as the SO2 source.
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Affiliation(s)
- Xu-Kuan Qi
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Meng-Jie Zheng
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Chao Yang
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Yating Zhao
- College of Chemical and Material Engineering, Quzhou University, Quzhou 324000, China
| | - Lin Guo
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Wujiong Xia
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
- College of Chemical and Material Engineering, Quzhou University, Quzhou 324000, China
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21
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Nicely AM, Popov AG, Wendlandt HC, Trammel GL, Kohler DG, Hull KL. Cu-Catalyzed Three-Component Carboamination of Electron Deficient Olefins. Org Lett 2023; 25:5302-5307. [PMID: 37440170 PMCID: PMC10771120 DOI: 10.1021/acs.orglett.3c01866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
The copper-catalyzed three-component carboamination of atropates for the synthesis of α-aryl amino acid derivatives is presented. The scope of the reaction is explored with respect to all three coupling partners: the alkyl halide, the atropate, and the aryl amine. A total of 41 examples are included, with yields of ≤92%. Both primary and secondary aryl amines participate in the carboamination along with α-haloesters, nitriles, and perfluoroiodoalkanes. Mechanistic investigations support a radical mechanism involving Cu-mediated C-N bond formation with the radical adduct.
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Affiliation(s)
- Aja M Nicely
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Andrei G Popov
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Hannah C Wendlandt
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Grace L Trammel
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61812, United States
| | - Daniel G Kohler
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61812, United States
| | - Kami L Hull
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61812, United States
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22
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Cai Y, Chatterjee S, Ritter T. Photoinduced Copper-Catalyzed Late-Stage Azidoarylation of Alkenes via Arylthianthrenium Salts. J Am Chem Soc 2023. [PMID: 37307146 DOI: 10.1021/jacs.3c04016] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The arylethylamine pharmacophore is conserved across a range of biologically active natural products and pharmaceuticals, particularly in molecules that act on the central nervous system. Herein, we present a photoinduced copper-catalyzed azidoarylation of alkenes at a late stage with arylthianthrenium salts, allowing access to highly functionalized acyclic (hetero)arylethylamine scaffolds that are otherwise difficult to access. A mechanistic study is consistent with a rac-BINAP-CuI-azide (2) as the photoactive catalytic species. We show the utility of the new method by the expedient synthesis of racemic melphalan in four steps through C-H functionalization.
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Affiliation(s)
- Yuan Cai
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Sagnik Chatterjee
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Tobias Ritter
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
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23
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Fu L, Chen X, Fan W, Chen P, Liu G. Copper-Catalyzed Asymmetric Functionalization of Vinyl Radicals for the Access to Vinylarene Atropisomers. J Am Chem Soc 2023. [PMID: 37300506 DOI: 10.1021/jacs.3c04498] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A novel asymmetric radical strategy for the straightforward synthesis of atropisomerically chiral vinyl arenes has been established herein, proceeding through copper-catalyzed atroposelective cyanation/azidation of aryl-substituted vinyl radicals. Critical to the success of the radical relay process is the atroposelective capture of the highly reactive vinyl radicals with chiral L*Cu(II) cyanide or azide species. Moreover, these axially chiral vinylarene products can be easily transformed into atropisomerically enriched amides and amines, enantiomerically enriched benzyl nitriles via an axis-to-center chirality transfer process, and an atropisomerically pure organocatalyst for the chemo-, diastereo-, and enantioselective (4 + 2) cyclization reaction.
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Affiliation(s)
- Liang Fu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Xin Chen
- Chang-Kung Chuang Institute, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Wenzheng Fan
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Pinhong Chen
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Guosheng Liu
- Chang-Kung Chuang Institute, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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24
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Kong L, Han X, Hu P, Wang F, Li X. Three-component regioselective carboamidation of 1,3-enynes via rhodium(III)-catalyzed C-H activation. Chem Commun (Camb) 2023; 59:6690-6693. [PMID: 37161763 DOI: 10.1039/d3cc01666h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Rhodium-catalyzed regio- and stereoselective three-component carboamidation of 1,3-enynes has been realized using indoles and dioxazolones as the functionalizing reagents. A wide range of multi-substituted skipped 1,4-dienes have been constructed in good yields and excellent stereoselectivity. The stereoselectivity is under substrate control. 1,3-Enynes bearing a relatively bulky alkyne terminus reacted with Z-selectivity. In contrast, a sterically less hindered alkyne terminus tends to predominantly give the E-configured skipped diene.
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Affiliation(s)
- Lingheng Kong
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an, 710062, China.
- College of Chemistry and Chemical Engineering, Taishan University, Tai'an, Shandong, 271000, China
| | - Xi Han
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an, 710062, China.
| | - Panjie Hu
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an, 710062, China.
| | - Fen Wang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an, 710062, China.
| | - Xingwei Li
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an, 710062, China.
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25
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Wei S, Zhang G, Wang Y, You M, Wang Y, Zhou L, Zhang Z. Modular synthesis of unsaturated aza-heterocycles via copper catalyzed multicomponent cascade reaction. iScience 2023; 26:106137. [PMID: 36895640 PMCID: PMC9988680 DOI: 10.1016/j.isci.2023.106137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 12/13/2022] [Accepted: 01/31/2023] [Indexed: 02/11/2023] Open
Abstract
The unsaturated aza-heterocycles such as tetrahydropyridines pose significant applications in both drug discovery and development. However, the methods to construct polyfunctionalized tetrahydropyridines are still limited. Herein, we report a modular synthesis of tetrahydropyridines via copper catalyzed multicomponent radical cascade reaction. The reaction features mild conditions and broad substrate scope. In addition, the reaction could scale up to gram scale with similar yield. A variety of 1,2,5,6-tetrahydropyridines with C3 and C5 substituents could be assembled from simple starting materials. More importantly, the products could serve as versatile intermediate to access various functionalized aza-heterocycles which further demonstrates its utility.
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Affiliation(s)
- Siqi Wei
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, China
| | - Guocong Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, China
| | - Yahui Wang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, China
| | - Mengwei You
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, China
| | - Yanan Wang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, China
| | - Liejin Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, China
| | - Zuxiao Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, China
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26
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Pozhydaiev V, Vayer M, Fave C, Moran J, Lebœuf D. Synthesis of Unprotected β-Arylethylamines by Iron(II)-Catalyzed 1,2-Aminoarylation of Alkenes in Hexafluoroisopropanol. Angew Chem Int Ed Engl 2023; 62:e202215257. [PMID: 36541580 DOI: 10.1002/anie.202215257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 12/19/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022]
Abstract
β-Arylethylamines are prevalent structural motifs in molecules exhibiting biological activity. Here we report a sequential one-pot protocol for the 1,2-aminoarylation of alkenes with hydroxylammonium triflate salts and (hetero)arenes. Unlike existing methods, this reaction provides a direct entry to unprotected β-arylethylamines with remarkable functional group tolerance, allowing key drug-oriented functional groups to be installed in a two-step process. The use of hexafluoroisopropanol as a solvent in combination with an iron(II) catalyst proved essential to reaching high-value nitrogen-containing molecules.
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Affiliation(s)
- Valentyn Pozhydaiev
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg, 8 Allée Gaspard Monge, 67000, Strasbourg, France
| | - Marie Vayer
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg, 8 Allée Gaspard Monge, 67000, Strasbourg, France
| | - Claire Fave
- Laboratoire d'Electrochimie Moléculaire, Université Paris Cité, 75013, Paris, France
| | - Joseph Moran
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg, 8 Allée Gaspard Monge, 67000, Strasbourg, France.,Institut Universitaire de France (IUF), 75005, Paris, France
| | - David Lebœuf
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg, 8 Allée Gaspard Monge, 67000, Strasbourg, France
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27
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Lamartina CW, Chartier CA, Lee S, Shah NH, Rovis T. Modular Synthesis of Unnatural Peptides via Rh(III)-Catalyzed Diastereoselective Three-Component Carboamidation Reaction. J Am Chem Soc 2023; 145:1129-1135. [PMID: 36576945 PMCID: PMC10580301 DOI: 10.1021/jacs.2c10793] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Herein we report a modular peptide ligation methodology that couples dioxazolones, arylboronic acids, and acrylamides to construct amide bonds in a diastereoselective manner under mild conditions, facilitated by Rh(III) catalysis. By converting the C-terminus of one peptide into a dioxazolone and the N-terminus of a second peptide into an acrylamide, the two pieces can be bridged by an arylboronic acid to construct unnatural phenylalanine, tyrosine, and tryptophan residues at the junction point with diastereoselectivity for their corresponding d-stereocenters. The reaction exhibits excellent functional group tolerance with a large substrate scope and is compatible with a wide array of protected amino acid residues that are utilized in Fmoc solid phase peptide synthesis. The methodology is applied to the synthesis of six diastereomeric proteasome inhibitor analogs, as well as the ligation of two 10-mer oligopeptides to construct a 21-mer polypeptide with an unnatural phenylalanine residue at the center.
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Affiliation(s)
| | - Cassandra A. Chartier
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Sumin Lee
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Neel H. Shah
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Tomislav Rovis
- Department of Chemistry, Columbia University, New York, New York 10027, United States
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28
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Rachor SG, Ahrens M, Braun T. Conversion of a Au I Fluorido Complex into an N-Fluoroamido Derivative: N-F versus Au-N Reactivity. Angew Chem Int Ed Engl 2022; 61:e202212858. [PMID: 36279190 PMCID: PMC10099710 DOI: 10.1002/anie.202212858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Indexed: 11/06/2022]
Abstract
The AuI complex [Au{N(F)SO2 Ph}(SPhos)] (SPhos=dicyclohexyl(2',6'-dimethoxy[1,1'-biphenyl]-2-yl)phosphane) (2) bearing a fluoroamido ligand has been synthesized by reaction of the fluorido complex [Au(F)(SPhos)] (1) with NFSI (NFSI=N-fluorobenzenesulfonimide). A reaction with CO resulted in an unprecedented insertion into the N-F bond at 2. With the carbene precursor N2 CH(CO2 Et) N-F bond cleavage gave the Au-F bond insertion product [Au{CHF(CO2 C2 H5 )}(SPhos)] (7). The presence of CNtBu led to Au-N cleavage at 2 and concomitant amide formation to give the cationic complex [Au(CNtBu)(SPhos)][N(F)SO2 Ph)] (5), which reacted further to give FtBu as well as the cyanido complex [Au(CN)(SPhos)] (6). These results led to the development of a process for the amination of electrophilic organic substrates by transfer of the fluoroamido group NF(SO2 Ph)- .
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Affiliation(s)
- Simon G Rachor
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany
| | - Mike Ahrens
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany
| | - Thomas Braun
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany
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29
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Ogundipe OO, Shoberu A, Xiao M, Zou JP. Copper-Catalyzed Radical Hydrazono-Phosphorylation of Alkenes. J Org Chem 2022; 87:15820-15829. [PMID: 36374155 DOI: 10.1021/acs.joc.2c01832] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
An efficient copper-catalyzed radical hydrazono-phosphorylation of alkenes with hydrazine derivatives and diarylphosphine oxides is described. The reaction provides a general and convenient method toward the synthesis of diverse β-hydrazonophosphine oxides in satisfactory yields. Based on conducted mechanistic experiments, a mechanism involving Ag-catalyzed oxidative generation of phosphinoyl radicals and subsequent addition to alkenes followed by Cu-assisted hydrazonation is proposed. Moreover, the practicability of the reaction is successfully demonstrated by its successful application on a gram scale.
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Affiliation(s)
- Olukayode Olamiji Ogundipe
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Soochow University, 199 Renai Street, Suzhou, Jiangsu 215123, China
| | - Adedamola Shoberu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Soochow University, 199 Renai Street, Suzhou, Jiangsu 215123, China
| | - Mei Xiao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Soochow University, 199 Renai Street, Suzhou, Jiangsu 215123, China
| | - Jian-Ping Zou
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Soochow University, 199 Renai Street, Suzhou, Jiangsu 215123, China
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30
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Copper-promoted C1−H amination of pyrrolo[1,2-a]quinoxaline with N‑fluorobenzenesulfonimide. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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31
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Yang Y, Hammond GB, Umemoto T. Self-Sustaining Fluorination of Active Methylene Compounds and High-Yielding Fluorination of Highly Basic Aryl and Alkenyl Lithium Species with a Sterically Hindered N-Fluorosulfonamide Reagent. Angew Chem Int Ed Engl 2022; 61:e202211688. [PMID: 36066942 PMCID: PMC9588725 DOI: 10.1002/anie.202211688] [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: 08/09/2022] [Indexed: 11/11/2022]
Abstract
Fluorination of carbanions is pivotal for the synthesis of fluorinated compounds, but the current N-F fluorinating agents have significant drawbacks due to many reactive locations that surround the reactive N-F site. By developing a sterically hindered N-fluorosulfonamide reagent, namely N-fluoro-N-(tert-butyl)-tert-butanesulfonamide (NFBB), we discovered a conceptually novel base-catalyzed, self-sustaining fluorination of active methylene compounds and achieved the high-yielding fluorination of the hitherto difficult highly basic (hetero)aryl and alkenyl lithium species. In the former, the mild and high yield fluorination of active methylene compounds exhibited wide functional group tolerance and its novel catalytic fluorination-deprotonation cycle mechanism was demonstrated by deuterium-tracing experiments. In the latter, NFBB reacted with a variety of highly basic (hetero)aryl and alkenyl lithium species to provide the desired fluoro (hetero)arenes and alkenes in unprecedented high or quantitative yields.
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Affiliation(s)
- Yuhao Yang
- Department of Chemistry, University of Louisville, Louisville, KY 40292, USA
| | - Gerald B Hammond
- Department of Chemistry, University of Louisville, Louisville, KY 40292, USA
| | - Teruo Umemoto
- Department of Chemistry, University of Louisville, Louisville, KY 40292, USA
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32
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Yang Y, Hammond G, Umemoto T. Self‐Sustaining Fluorination of Active Methylene Compounds andFluorination of Aryl and Alkenyl Lithium Species with a StericallyHindered N‐Fluorosulfonamide Reagent. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202211688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yuhao Yang
- University of Louisville College of Arts and Sciences Chemistry UNITED STATES
| | - Gerald Hammond
- University of Louisville College of Arts and Sciences Chemistry 2320 S. Brook 40208 Louisville UNITED STATES
| | - Teruo Umemoto
- University of Louisville College of Arts and Sciences Chemistry UNITED STATES
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33
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Kwon Y, Wang Q. Recent Advances in 1,2-Amino(hetero)arylation of Alkenes. Chem Asian J 2022; 17:e202200215. [PMID: 35460596 PMCID: PMC9357224 DOI: 10.1002/asia.202200215] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/31/2022] [Indexed: 11/06/2022]
Abstract
Alkene amino(hetero)arylation presents a highly efficient and straightforward strategy for direct installation of amino groups and heteroaryl rings across a double bond simultaneously. An extensive array of practical transformations has been developed via alkene difunctionalization approach to access a broad range of medicinally valuable (hetero)arylethylamine motifs. This review presents recent progress in 1,2-amino(hetero)arylation of alkenes organized in three different modes. First, intramolecular transformations employing C, N-tethered alkenes will be introduced. Next, two-component reactions will be discussed with different combination of precursors, N-tethered alkenes and external aryl precursor, C-tethered alkenes and external amine precursor, or C, N-tethered reagents, and alkenes. Last, three-component intermolecular amino(hetero)arylation reactions will be covered.
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Affiliation(s)
- Yungeun Kwon
- Department of Chemistry, Duke University, Durham, North Carolina, 27708, USA
| | - Qiu Wang
- Department of Chemistry, Duke University, Durham, North Carolina, 27708, USA
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34
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Wu D, Wu L, Chen P, Liu G. Asymmetric Alkynylation of Tertiary
Carbon‐Centered
Radical via
Copper‐Catalyzed
Radical Relay. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dunqi Wu
- Chang‐Kung Chuang Institute, East China Normal University Shanghai 200062
| | - Lianqian Wu
- State Key Laboratory of Organometallic Chemistry, and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences Shanghai 200032
| | - Pinhong Chen
- State Key Laboratory of Organometallic Chemistry, and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences Shanghai 200032
| | - Guosheng Liu
- Chang‐Kung Chuang Institute, East China Normal University Shanghai 200062
- State Key Laboratory of Organometallic Chemistry, and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences Shanghai 200032
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35
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He Y, Du C, Han J, Han J, Zhu C, Xie J. Manganese‐Catalyzed Anti‐Markovnikov
Hydroarylation of Enamides: Modular Synthesis of Arylethylamines. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200202] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yijie He
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Chaoyu Du
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Jian Han
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Jie Han
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Chengjian Zhu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
- Green Catalysis Center, College of Chemistry and Molecular Engineering, Zhengzhou University Zhengzhou 450001 China
| | - Jin Xie
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
- Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University Changsha 410082 China
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36
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Lee J, Ju X, Lee M, Jiang Q, Jang H, Kim WS, Wu L, Williams S, Wang XJ, Zeng X, Payne J, Han ZS. Copper Catalyzed Regioselective and Stereospecific Aziridine Opening with Pyridyl Grignard Nucleophiles. Org Lett 2022; 24:2655-2659. [PMID: 35377668 DOI: 10.1021/acs.orglett.2c00703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Copper catalyzed regioselective and stereospecific coupling between aziridines and in situ generated pyridine Grignard reagents is reported. This method provides β-pyridylethylamines with diverse structures and functionalities from aziridines and iodopyridines. β-Pyridylethylamines are potential scaffolds for the synthesis of biologically active compounds often found in pharmaceuticals. The synthesis of challenging chiral dihydroazaindoles was also achieved through mild one-pot reaction conditions via aziridine opening followed by nucleophilic cyclization.
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Affiliation(s)
- Jaehee Lee
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Xuan Ju
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Miseon Lee
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Qi Jiang
- Department of Material and Analytical Sciences, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Hwanjong Jang
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Wan Shin Kim
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Linglin Wu
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Suja Williams
- Department of Material and Analytical Sciences, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Xiao-Jun Wang
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Xingzhong Zeng
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Jenna Payne
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Zhengxu S Han
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
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37
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Mondal S, Dumur F, Gigmes D, Sibi MP, Bertrand MP, Nechab M. Enantioselective Radical Reactions Using Chiral Catalysts. Chem Rev 2022; 122:5842-5976. [DOI: 10.1021/acs.chemrev.1c00582] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Shovan Mondal
- Department of Chemistry, Syamsundar College, Shyamsundar 713424, West Bengal, India
| | - Frédéric Dumur
- Aix Marseille Univ, CNRS, Institut de Chimie Radicalaire UMR 7273, F-13390e Marseille, France
| | - Didier Gigmes
- Aix Marseille Univ, CNRS, Institut de Chimie Radicalaire UMR 7273, F-13390e Marseille, France
| | - Mukund P. Sibi
- Department of Chemistry and Biochemistry North Dakota State University, Fargo, North Dakota 58108, United States
| | - Michèle P. Bertrand
- Aix Marseille Univ, CNRS, Institut de Chimie Radicalaire UMR 7273, F-13390e Marseille, France
| | - Malek Nechab
- Aix Marseille Univ, CNRS, Institut de Chimie Radicalaire UMR 7273, F-13390e Marseille, France
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38
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Holst HM, Floreancig JT, Ritts CB, Race NJ. Aziridine Opening via a Phenonium Ion Enables Synthesis of Complex Phenethylamine Derivatives. Org Lett 2022; 24:501-505. [PMID: 34967220 PMCID: PMC8796817 DOI: 10.1021/acs.orglett.1c03857] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report that the treatment of unsymmetrical 2,3-disubstituted aziridines with TiCl4 yields β-phenethylamine products via the intermediacy of a phenonium ion. Derivatization of the products obtained via this method is demonstrated. Computational analysis of the reaction pathway provides insight into the reaction mechanism, including the selectivity of the phenonium opening.
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Affiliation(s)
- Hannah M Holst
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Jack T Floreancig
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Casey B Ritts
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Nicholas J Race
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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39
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Noten EA, McAtee RC, Stephenson CRJ. Catalytic Intramolecular Aminoarylation of Unactivated Alkenes with Aryl Sulfonamides. Chem Sci 2022; 13:6942-6949. [PMID: 35774166 PMCID: PMC9200115 DOI: 10.1039/d2sc01228f] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 05/10/2022] [Indexed: 11/21/2022] Open
Abstract
Arylethylamines are abundant motifs in myriad natural products and pharmaceuticals, so efficient methods to synthesize them are valuable in drug discovery. In this work, we disclose an intramolecular alkene aminoarylation cascade that exploits the electrophilicity of a nitrogen-centered radical to form a C–N bond, then repurposes the nitrogen atom's sulfonyl activating group as a traceless linker to form a subsequent C–C bond. This photoredox catalysis protocol enables the preparation of densely substituted arylethylamines from commercially abundant aryl sulfonamides and unactivated alkenes under mild conditions. Reaction optimization, scope, mechanism, and synthetic applications are discussed. A photochemical assembly of cyclic arylethylamines occurs by cascade radical annulation and desulfonylative rearrangement in N-acyl sulfonamides. This aminoarylation is made possible through judicious design intended to thwart undesired reactivity.![]()
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Affiliation(s)
- Efrey A Noten
- University of Michigan, Department of Chemistry, Willard Henry Dow Laboratory 930 North University Ave. Ann Arbor MI 48109 USA
| | - Rory C McAtee
- University of Michigan, Department of Chemistry, Willard Henry Dow Laboratory 930 North University Ave. Ann Arbor MI 48109 USA
| | - Corey R J Stephenson
- University of Michigan, Department of Chemistry, Willard Henry Dow Laboratory 930 North University Ave. Ann Arbor MI 48109 USA
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40
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Ye KY, Guo P, Yuan GC, Xu LH. Cobalt-catalyzed modular assembling toward multi-functionalized furan derivatives. Org Chem Front 2022. [DOI: 10.1039/d1qo01830b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A cobalt-catalyzed modular [3+2] assembling of unsaturated hydrocarbons and β-dicarbonyls is reported. This protocol features mild reaction conditions and a broad substrate scope, providing facile entries toward diverse multi-functionalized dihydrofuran...
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41
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Wang Z, Yang B, Yang Q, Wang Y. C(sp 3)–H 1,3-diamination of cumene derivatives catalyzed by a dirhodium( ii) catalyst. Org Chem Front 2022. [DOI: 10.1039/d2qo00461e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Using the single-electron oxidation cycle of a dirhodium catalyst, amination can form two primary C–N bonds in a one-step process.
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Affiliation(s)
- Zhifan Wang
- College of Chemistry, Sichuan University, Chengdu, 610041, P.R. China
| | - Beiqi Yang
- College of Chemistry, Sichuan University, Chengdu, 610041, P.R. China
| | - Qi Yang
- College of Chemistry, Sichuan University, Chengdu, 610041, P.R. China
| | - Yuanhua Wang
- College of Chemistry, Sichuan University, Chengdu, 610041, P.R. China
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42
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Yang Y, Wang H, Sun Z, Li X, Sun F, Liu Q, Zhang L, Xu L, Liu H. Palladium-catalyzed regiodivergent arylamination/aryloxygenation of allenamide. Org Chem Front 2022. [DOI: 10.1039/d2qo01271e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In regiodivergent arylamination/aryloxygenation of allenamides, use of Cy2NMe caused 2,1-arylamination and the corresponding alkenes were formed with excellent Z configuration. Whereas, utilizing Ag2CO3 caused 2,3-aryloxygenation via an unexpected CO2 insertion from Ag2CO3.
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Affiliation(s)
- Yi Yang
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China
| | - Hui Wang
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China
| | - Zehua Sun
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China
| | - Xinjin Li
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China
| | - Fenggang Sun
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China
| | - Qing Liu
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China
| | - Lizhi Zhang
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China
| | - Liping Xu
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China
| | - Hui Liu
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China
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43
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Wang JL, Liu ML, Zou JY, Sun WH, Liu XY. Copper-Catalyzed Aminoarylation of Alkenes via Aminyl Radical Addition and Aryl Migration. Org Lett 2021; 24:309-313. [PMID: 34931822 DOI: 10.1021/acs.orglett.1c03973] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We describe a new strategy for aminoarylation of alkenes by copper-catalyzed smiles rearrangement using O-benzoylhydroxylamines as the amine reagent. This method affords various β-amino amide derivatives possessing a quaternary carbon center with wide functional group tolerance and high regioselectivity. The mechanistic studies indicate that the transformation can involve aminyl radical intermediates under acid-free condition.
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Affiliation(s)
- Jin-Lin Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Mei-Ling Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Jian-Yu Zou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Wen-Hui Sun
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Xue-Yuan Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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44
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You C, Studer A. Three-component 1,2-carboamination of vinyl boronic esters via amidyl radical induced 1,2-migration. Chem Sci 2021; 12:15765-15769. [PMID: 35003609 PMCID: PMC8654000 DOI: 10.1039/d1sc05811h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 11/16/2021] [Indexed: 12/25/2022] Open
Abstract
Three-component 1,2-carboamination of vinyl boronic esters with alkyl/aryl lithium reagents and N-chloro-carbamates/carboxamides is presented. Vinylboron ate complexes generated in situ from the boronic ester and an organo lithium reagent are shown to react with readily available N-chloro-carbamates/carboxamides to give valuable 1,2-aminoboronic esters. These cascades proceed in the absence of any catalyst upon simple visible light irradiation. Amidyl radicals add to the vinylboron ate complexes followed by oxidation and 1,2-alkyl/aryl migration from boron to carbon to give the corresponding carboamination products. These practical cascades show high functional group tolerance and accordingly exhibit broad substrate scope. Gram-scale reaction and diverse follow-up transformations convincingly demonstrate the synthetic potential of this method.
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Affiliation(s)
- Cai You
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Corrensstraβe 40 48149 Münster Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Corrensstraβe 40 48149 Münster Germany
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45
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Zhu X, Jian W, Huang M, Li D, Li Y, Zhang X, Bao H. Asymmetric radical carboesterification of dienes. Nat Commun 2021; 12:6670. [PMID: 34795235 PMCID: PMC8602303 DOI: 10.1038/s41467-021-26843-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 10/22/2021] [Indexed: 11/23/2022] Open
Abstract
The straightforward strategy of building a chiral C-O bond directly on a general carbon radical center is challenging and stereocontrol of the reactions of open-chain hydrocarbon radicals remains a largely unsolved problem. Advance in this elementary step will spur the development of asymmetric radical C-O bond construction. Herein, we report a copper-catalyzed regioselective and enantioselective carboesterification of substituted dienes using alkyl diacyl peroxides as the source of both the carbon and oxygen substituents. The participation of external acids in this reaction substantially extends its applicability and leads to structurally diverse allylic ester products. This work represents the advance in the key elementary reaction of intermolecular enantioselective construction of C-O bond on open-chain hydrocarbon radicals and may lead to the discovery of other asymmetric radical reactions. Stereocontrol of C–O bond formation from a carbon-based radical is very difficult due to the rapid inversion of the carbon radical. Here the authors present a method to form chiral esters from conjugated dienes with copper and chiral PyBox ligands, likely proceeding via an allylic radical.
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Affiliation(s)
- Xiaotao Zhu
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian, 350002, P. R. of China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. of China
| | - Wujun Jian
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian, 350002, P. R. of China
| | - Meirong Huang
- Shenzhen Bay Laboratory, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. of China
| | - Daliang Li
- Fujian Key Laboratory of Innate Immune Biology, Biomedical Research Center of South China, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, College of Life Sciences, Fujian Normal University, Fujian, China
| | - Yajun Li
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian, 350002, P. R. of China
| | - Xinhao Zhang
- Shenzhen Bay Laboratory, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. of China
| | - Hongli Bao
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian, 350002, P. R. of China. .,University of Chinese Academy of Sciences, Beijing, 100049, P. R. of China.
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46
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Buev EM, Smorodina AA, Moshkin VS, Sosnovskikh VY. 5-Aryloxazolidines as Reagents for Double Alkylation of Arenes: A Novel Synthesis of 4-Aryltetrahydroisoquinolines. J Org Chem 2021; 86:15307-15317. [PMID: 34591479 DOI: 10.1021/acs.joc.1c01881] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
5-Aryloxazolidines react with arenes under Lewis or Brønsted acid conditions via the Friedel-Crafts/Pictet-Spengler double alkylation sequence to give alkaloid-like 4-aryltetrahydroisoquinolines in 12-94% yields. Three approaches for the controlled insertion of substituents into the target molecules and application of oxazolidine derivatives such as 1-arylethanol-2-amines or 4-hydroxytetrahydroisoquinolines in the alkylation of arenes are also described. An unprecedented two-step easily scalable synthesis of the 4-aryltetrahydroisoquinoline core from aromatic aldehyde was achieved applying oxazolidine methodology.
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Affiliation(s)
- Evgeny M Buev
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| | - Anastasia A Smorodina
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| | - Vladimir S Moshkin
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| | - Vyacheslav Y Sosnovskikh
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
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47
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Xie L, Wang S, Zhang L, Zhao L, Luo C, Mu L, Wang X, Wang C. Directed nickel-catalyzed regio- and diastereoselective arylamination of unactivated alkenes. Nat Commun 2021; 12:6280. [PMID: 34725344 PMCID: PMC8560905 DOI: 10.1038/s41467-021-26527-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 10/01/2021] [Indexed: 12/26/2022] Open
Abstract
Few methods have been reported for intermolecular arylamination of alkenes, which could provide direct access to important arylethylamine scaffolds. Herein, we report an intermolecular syn-1,2-arylamination of unactivated alkenes with arylboronic acids and O-benzoylhydroxylamine electrophiles with Ni(II) catalyst. The cleavable bidentate picolinamide directing group facilitates formation of stabilized 4-, 5- or 6-membered nickelacycles and enables the difunctionalization of diverse alkenyl amines with high levels of regio-, chemo- and diastereocontrol. This general and practical protocol is compatible with broad substrate scope and high functional group tolerance. The utility of this method is further demonstrated by the site-selective modification of pharmaceutical agents.
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Affiliation(s)
- Leipeng Xie
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; College of Chemistry, Tianjin Normal University, Tianjin, 300387, People's Republic of China
| | - Shenghao Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; College of Chemistry, Tianjin Normal University, Tianjin, 300387, People's Republic of China
| | - Lanlan Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; College of Chemistry, Tianjin Normal University, Tianjin, 300387, People's Republic of China
| | - Lei Zhao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; College of Chemistry, Tianjin Normal University, Tianjin, 300387, People's Republic of China
| | - Chun Luo
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; College of Chemistry, Tianjin Normal University, Tianjin, 300387, People's Republic of China
| | - Linping Mu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; College of Chemistry, Tianjin Normal University, Tianjin, 300387, People's Republic of China
| | - Xiuguang Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; College of Chemistry, Tianjin Normal University, Tianjin, 300387, People's Republic of China
| | - Chao Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; College of Chemistry, Tianjin Normal University, Tianjin, 300387, People's Republic of China.
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48
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Cui GQ, Dai JC, Li Y, Li YB, Hu DD, Bian KJ, Sheng J, Wang XS. Copper-Catalyzed Enantioselective Arylation via Radical-Mediated C-C Bond Cleavage: Synthesis of Chiral ω,ω-Diaryl Alkyl Nitriles. Org Lett 2021; 23:7503-7507. [PMID: 34528439 DOI: 10.1021/acs.orglett.1c02725] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The first example of copper-catalyzed ring-opening, enantioselective arylation of cyclic ketoxime esters to access ω,ω-diaryl alkyl nitriles has been developed in high yield (up to 92% yield) with excellent enantioselectivity (up to 91% ee). Side-arm bis(oxazoline) ligand plays a significant role in this asymmetric catalytic transformation, which provides an efficient route to construct diverse chiral ω,ω-diaryl alkyl nitriles. Synthetic utility has also been demonstrated in the further derivatization of the ω,ω-diaryl alkyl nitrile to the corresponding amide.
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Affiliation(s)
- Guo-Qing Cui
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Jing-Cheng Dai
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Yan Li
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Yuan-Bo Li
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Duo-Duo Hu
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Kang-Jie Bian
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Jie Sheng
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Xi-Sheng Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
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49
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Bunescu A, Abdelhamid Y, Gaunt MJ. Multicomponent alkene azidoarylation by anion-mediated dual catalysis. Nature 2021; 598:597-603. [PMID: 34517408 DOI: 10.1038/s41586-021-03980-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 09/01/2021] [Indexed: 01/25/2023]
Abstract
Molecules that contain the β-arylethylamine motif have applications in the modulation of pain, treatment of neurological disorders and management of opioid addiction, among others, making it a privileged scaffold in drug discovery1,2. De novo methods for their assembly are reliant on transformations that convert a small class of feedstocks into the target compounds via time-consuming multistep syntheses3-5. Synthetic invention can drive the investigation of the chemical space around this scaffold to further expand its capabilities in biology6-9. Here we report the development of a dual catalysis platform that enables a multicomponent coupling of alkenes, aryl electrophiles and a simple nitrogen nucleophile, providing single-step access to synthetically versatile and functionally diverse β-arylethylamines. Driven by visible light, two discrete copper catalysts orchestrate aryl-radical formation and azido-group transfer, which underpin an alkene azidoarylation process. The process shows broad scope in alkene and aryl components and an azide anion performs a multifaceted role both as a nitrogen source and in mediating the redox-neutral dual catalysis via inner-sphere electron transfer10,11. The synthetic capabilities of this anion-mediated alkene functionalization process are likely to be of use in a variety of pharmaceutically relevant and wider synthetic applications.
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Affiliation(s)
- Ala Bunescu
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Yusra Abdelhamid
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Matthew J Gaunt
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK.
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50
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Kang T, Kim N, Cheng PT, Zhang H, Foo K, Engle KM. Nickel-Catalyzed 1,2-Carboamination of Alkenyl Alcohols. J Am Chem Soc 2021; 143:13962-13970. [PMID: 34415748 DOI: 10.1021/jacs.1c07112] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An alcohol-directed, nickel-catalyzed three-component umpolung carboamination of unactivated alkenes with aryl/alkenylboronic esters and electrophilic aminating reagents is reported. This transformation is enabled by specifically tailored O-(2,6-dimethoxybenzoyl)hydroxylamine electrophiles that suppress competitive processes, including undesired β-hydride elimination and transesterification between the alcohol substrate and electrophile. The reaction delivers the desired 1,2-carboaminated products with generally high regio- and syn-diastereoselectivity and exhibits a broad scope of coupling partners and alkenes, including complex natural products. Various mechanistic experiments and analysis of the stereochemical outcome with a cyclic alkene substrate, as confirmed by X-ray crystallographic analysis, support alcohol-directed syn-insertion of an organonickel(I) species.
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Affiliation(s)
- Taeho Kang
- Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Nana Kim
- Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Peter T Cheng
- Discovery Chemistry, Bristol Myers Squibb Research & Early Development, P.O. Box 4000, Princeton, New Jersey 08543, United States
| | - Hao Zhang
- Discovery Chemistry, Bristol Myers Squibb Research & Early Development, P.O. Box 4000, Princeton, New Jersey 08543, United States
| | - Klement Foo
- Discovery Chemistry, Bristol Myers Squibb Research & Early Development, P.O. Box 4000, Princeton, New Jersey 08543, United States
| | - Keary M Engle
- Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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