1
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Wu LS, Zhou T, Shi BF. Pd(II)-Catalyzed Desymmetrizing gem-Dimethyl C(sp 3)-H Alkenylation/Aza-Wacker Cyclization Directed by PIP Auxiliary. Org Lett 2024; 26:4457-4462. [PMID: 38775281 DOI: 10.1021/acs.orglett.4c01214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
Desymmetrization of gem-dimethyl groups has been developed as an efficient pathway to achieve asymmetric C(sp3)-H functionalization. Herein, we described a Pd(II)-catalyzed desymmetrizing gem-dimethyl C(sp3)-H alkenylation/aza-Wacker cyclization directed by a bidentate 2-pyridinylisopropyl auxiliary. Chiral α-methyl γ-lactams were obtained in good yields (up to 82%) and high enantioselectivities (up to 91.5% ee).
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Affiliation(s)
- Le-Song Wu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Tao Zhou
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang China
| | - Bing-Feng Shi
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang China
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
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2
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Gayatri, Brewitz L, Ibbotson L, Salah E, Basak S, Choudhry H, Schofield CJ. Thiophene-fused γ-lactams inhibit the SARS-CoV-2 main protease via reversible covalent acylation. Chem Sci 2024; 15:7667-7678. [PMID: 38784729 PMCID: PMC11110133 DOI: 10.1039/d4sc01027b] [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: 02/13/2024] [Accepted: 04/15/2024] [Indexed: 05/25/2024] Open
Abstract
Enzyme inhibitors working by O-acylation of nucleophilic serine residues are of immense medicinal importance, as exemplified by the β-lactam antibiotics. By contrast, inhibition of nucleophilic cysteine enzymes by S-acylation has not been widely exploited for medicinal applications. The SARS-CoV-2 main protease (Mpro) is a nucleophilic cysteine protease and a validated therapeutic target for COVID-19 treatment using small-molecule inhibitors. The clinically used Mpro inhibitors nirmatrelvir and simnotrelvir work via reversible covalent reaction of their electrophilic nitrile with the Mpro nucleophilic cysteine (Cys145). We report combined structure activity relationship and mass spectrometric studies revealing that appropriately functionalized γ-lactams can potently inhibit Mpro by reversible covalent reaction with Cys145 of Mpro. The results suggest that γ-lactams have potential as electrophilic warheads for development of covalently reacting small-molecule inhibitors of Mpro and, by implication, other nucleophilic cysteine enzymes.
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Affiliation(s)
- Gayatri
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford 12 Mansfield Road OX1 3TA Oxford UK
| | - Lennart Brewitz
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford 12 Mansfield Road OX1 3TA Oxford UK
| | - Lewis Ibbotson
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford 12 Mansfield Road OX1 3TA Oxford UK
| | - Eidarus Salah
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford 12 Mansfield Road OX1 3TA Oxford UK
| | - Shyam Basak
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford 12 Mansfield Road OX1 3TA Oxford UK
| | - Hani Choudhry
- Department of Biochemistry, Center for Artificial Intelligence in Precision Medicines, King Abdulaziz University Jeddah Saudi Arabia
| | - Christopher J Schofield
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford 12 Mansfield Road OX1 3TA Oxford UK
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3
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de Oliveira AG, Wang MF, Carmona RC, Lustosa DM, Gorbatov SA, Correia CRD. Enantioselective synthesis of β-aryl-γ-lactam derivatives via Heck-Matsuda desymmetrization of N-protected 2,5-dihydro-1 H-pyrroles. Beilstein J Org Chem 2024; 20:940-949. [PMID: 38711594 PMCID: PMC11070958 DOI: 10.3762/bjoc.20.84] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 04/11/2024] [Indexed: 05/08/2024] Open
Abstract
We report herein an enantioselective palladium-catalyzed Heck-Matsuda reaction for the desymmetrization of N-protected 2,5-dihydro-1H-pyrroles with aryldiazonium salts, using the chiral N,N-ligand (S)-PyraBox. This strategy has allowed straightforward access to a diversity of 4-aryl-γ-lactams via Heck arylation followed by a sequential Jones oxidation. The overall method displays a broad scope and good enantioselectivity, favoring the (R) enantiomer. The applicability of the protocol is highlighted by the efficient enantioselective syntheses of the selective phosphodiesterase-4-inhibitor rolipram and the commercial drug baclofen as hydrochloride.
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Affiliation(s)
- Arnaldo G de Oliveira
- Department of Organic Chemistry, Chemistry Institute, University of Campinas, Rua Josué de Castro, 13083-970 Campinas, São Paulo, Brazil
| | - Martí F Wang
- Department of Organic Chemistry, Chemistry Institute, University of Campinas, Rua Josué de Castro, 13083-970 Campinas, São Paulo, Brazil
| | - Rafaela C Carmona
- Department of Organic Chemistry, Chemistry Institute, University of Campinas, Rua Josué de Castro, 13083-970 Campinas, São Paulo, Brazil
| | - Danilo M Lustosa
- Department of Organic Chemistry, Chemistry Institute, University of Campinas, Rua Josué de Castro, 13083-970 Campinas, São Paulo, Brazil
| | - Sergei A Gorbatov
- Department of Organic Chemistry, Chemistry Institute, University of Campinas, Rua Josué de Castro, 13083-970 Campinas, São Paulo, Brazil
| | - Carlos R D Correia
- Department of Organic Chemistry, Chemistry Institute, University of Campinas, Rua Josué de Castro, 13083-970 Campinas, São Paulo, Brazil
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4
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Li WF, Xu QH, Miao QY, Xiao B. Dual Photoredox/Nickel Catalysis Enables Diastereoselective Synthesis of Multisubstituted γ-Lactams Using Alkyl-GeMe 3 as Radical Precursors. J Org Chem 2024. [PMID: 38323758 DOI: 10.1021/acs.joc.3c02348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Herein, we report a single-step, multicomponent approach to versatile γ-lactams through dual photoredox/nickel-catalyzed dicarbofunctionalization of α,β-unsaturated γ-butyrolactam. This reaction utilized alkyl trimethylgermanium as a radical precursor and acyl chloride as the electrophile, demonstrating remarkable functional group compatibility.
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Affiliation(s)
- Wen-Feng Li
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Qing-Hao Xu
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Qi-Yue Miao
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Bin Xiao
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
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5
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Tang L, Luo Y, Sheng C, Xie F, Zhang W. Cu-Catalyzed Asymmetric Kinetic Boron Conjugate Addition of γ-Substituted α,β-Unsaturated γ-Lactams. Angew Chem Int Ed Engl 2023; 62:e202304640. [PMID: 37070236 DOI: 10.1002/anie.202304640] [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: 04/01/2023] [Revised: 04/15/2023] [Accepted: 04/17/2023] [Indexed: 04/19/2023]
Abstract
Chiral α,β-unsaturated γ-lactams bearing simple γ- substituents are found in biologically active molecules and natural products, however, their synthesis still remains difficult. Herein, we report an efficient kinetic resolution (KR) of γ-substituted α,β-unsaturated γ-lactams via a Cu-catalyzed asymmetric boron conjugate addition, which also leads to the efficient synthesis of chiral β-hydroxy-γ-lactams with β,γ-stereogenic carbon centers. The KR proceeded smoothly with a wide range of γ-alkyl or aryl substituted substrates including those bearing aromatic heterocycles and different N-protected substrates in up to 347 of s value. Their highly versatile transformations, synthetic utility in biologically active molecules, and inhibitory activities against cisplatin-sensitive ovarian cancer cell A2780 have also been demonstrated. Differing from the well-known mechanism involving Cu-B species in Cu-catalyzed boron conjugate additions, our mechanistic studies using density functional theory (DFT) calculations and experiments indicate that a Lewis acid CuI -catalyzed mechanism is the likely pathway in the catalytic reaction.
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Affiliation(s)
- Liang Tang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Yicong Luo
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Cheng Sheng
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Fang Xie
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
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6
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Deng YH, Zhang CB, Sun JJ, Xu WL, Fu JY. A regioselective [3 + 2] cycloaddition reaction of 2-benzylidene-1-indenones with functional olefins to access indanone-fused 2D/3D skeletons. Org Biomol Chem 2023; 21:4388-4392. [PMID: 37161754 DOI: 10.1039/d3ob00559c] [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
The regioselective [3 + 2] cycloaddition reaction of 2-benzylidene-1-indenones with functional olefins was established with DABCO as a base under mild conditions. Using this approach, a series of diversely substituted indanone-fused cyclopentane polycycles with highly crowded multiple substituents were synthesized in high yields.
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Affiliation(s)
- Yi-Hang Deng
- Henan Engineering Research Center of Functional Materials and Catalytic Reaction, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China.
| | - Chuan-Bao Zhang
- Henan Engineering Research Center of Functional Materials and Catalytic Reaction, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China.
- School of Pharmacy, Zhengzhou Railway Vocational & Technical College, Zhengzhou 450052, China
| | - Jun-Jie Sun
- Henan Engineering Research Center of Functional Materials and Catalytic Reaction, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China.
| | - Wen-Li Xu
- Henan Engineering Research Center of Functional Materials and Catalytic Reaction, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China.
| | - Ji-Ya Fu
- Henan Engineering Research Center of Functional Materials and Catalytic Reaction, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China.
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7
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Liu D, Lu X, Chai Z, Yang H, Sun Y, Yu F. Progress in Construction of 2 H-Pyrrol-2-ones Skeleton. CHINESE J ORG CHEM 2023. [DOI: 10.6023/cjoc202207006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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8
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Substrate-Dependent Selectivity in Sc(OTf)3-Catalyzed Cyclization of Alkenoic Acids and N-Protected Alkenamides. Catalysts 2022. [DOI: 10.3390/catal12111481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Five- and six-membered ring lactones and lactams are ubiquitous frameworks in various natural and synthetic molecules and are key building blocks in organic synthesis. Catalytic addition of an O-H or N-H bond across an unactivated C–C double bond is an appealing approach to rapidly access such highly valuable N- and O-containing skeletons in a waste-free and 100% atom efficient process. Herein, we report, for the first time, the efficient and high-yield cyclization of δ/ε-alkenoic acids and N-protected δ-alkenamides catalyzedby practical and easily accessible Lewis acid scandium(III) triflate under thermal and microwave conditions. The selectivity outcome of the reaction of δ/ε-alkenoic acids was dependent on the substitution patterns of the backbone chain and alkene moiety, leading to the exclusive formation of either the corresponding γ/δ-lactones via an O-selective cyclization or the Friedel–Crafts-type product by C-selective cyclization. An uncommon and rarely disclosed O-selective cyclization occurred preferentially or exclusively when N-protected δ-alkenamides were engaged in the reaction. The atom selectivity of the cyclization was unambiguously confirmed by single crystal X-ray crystallography.
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9
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Deepake SK, Kumar M, Kumar P, DAS UTPAL. α‐Angelica Lactone Catalysed Oxidation of Pyrrolidines to Lactams. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Siddharth K Deepake
- National Chemical Laboratory CSIR Division of Organic Chemistry 411008 Pune INDIA
| | - Manish Kumar
- National Chemical Laboratory CSIR Division of Organic Chemistry 411008 Pune INDIA
| | - Pawan Kumar
- National Chemical Laboratory CSIR Division of Organic Chemistry 411008 Pune INDIA
| | - UTPAL DAS
- National Chemical Laboratory CSIR Division of Organic Chemistry Pashan Road411008411008 411008 Pune INDIA
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10
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López-Francés A, del Corte X, Serna-Burgos Z, Martínez de Marigorta E, Palacios F, Vicario J. Exploring the Synthetic Potential of γ-Lactam Derivatives Obtained from a Multicomponent Reaction. Applications as Antiproliferative Agents. Molecules 2022; 27:molecules27113624. [PMID: 35684563 PMCID: PMC9182551 DOI: 10.3390/molecules27113624] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 05/31/2022] [Accepted: 06/01/2022] [Indexed: 12/04/2022] Open
Abstract
A study on the reactivity of 3-amino α,β-unsaturated γ-lactam derivatives obtained from a multicomponent reaction is presented. Key features of the substrates are the presence of an endocyclic α,β-unsaturated amide moiety and an enamine functionality. Following different synthetic protocols, the functionalization at three different positions of the lactam core is achieved. In the presence of a soft base, under thermodynamic conditions, the functionalization at C-4 takes place where the substrates behave as enamines, while the use of a strong base, under kinetic conditions, leads to the formation of C-5-functionalized γ-lactams, in the presence of ethyl glyoxalate, through a highly diastereoselective vinylogous aldol reaction. Moreover, the nucleophilic addition of organometallic species allows the functionalization at C-3, through the imine tautomer, affording γ-lactams bearing tetrasubstituted stereocenters, where the substrates act as imine electrophiles. Taking into account the advantage of the presence of a chiral stereocenter in C-5 substituted γ-lactams, further diastereoselective transformations are also explored, leading to novel bicyclic substrates holding a fused γ and δ-lactam skeleton. Remarkably, an example of a highly stereoselective formal [3+3] cycloaddition reaction of chiral γ-lactam substrates is reported for the synthesis of 1,4-dihidropyridines, where a non-covalent attractive interaction of a carbonyl group with an electron-deficient arene seems to drive the stereoselectivity of the reaction to the exclusive formation of the cis isomer. In order to unambiguously determine the substitution pattern resulting from the diverse reactions, an extensive characterization of the substrates is detailed through 2D NMR and/or X-ray experiments. Likewise, applications of the substrates as antiproliferative agents against lung and ovarian cancer cells are also described.
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Affiliation(s)
| | | | | | | | - Francisco Palacios
- Correspondence: (F.P.); (J.V.); Tel.: +34-945013103 (F.P.); +34-945013087 (J.V.)
| | - Javier Vicario
- Correspondence: (F.P.); (J.V.); Tel.: +34-945013103 (F.P.); +34-945013087 (J.V.)
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11
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Guo F, Wang H, Ye X, Tan CH. Advanced Synthesis Using Photocatalysis Involved Dual Catalytic System. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Fenfen Guo
- Zhejiang University of Technology College of Pharmaceutical Science CHINA
| | - Hong Wang
- Zhejiang University of Technology College of Pharmaceutical Science CHINA
| | - Xinyi Ye
- Zhejiang University of Technology College of Pharmaceutical Science 18 Chaowang Road 310014 Hangzhou CHINA
| | - Choon-Hong Tan
- Nanyang Technological University School of Physical and Mathematical Sciences SINGAPORE
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12
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Barrios-Bermúdez N, Cerpa-Naranjo A, Rojas-Cervantes ML. Amino-Functionalized Multiwall Carbon Nanotubes as Efficient Basic Catalysts for the Formation of γ-Lactams: Synthesis of N-1-Heptenyl-2-Pyrrolidinone. NANOMATERIALS 2022; 12:nano12040684. [PMID: 35215011 PMCID: PMC8877134 DOI: 10.3390/nano12040684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/10/2022] [Accepted: 02/14/2022] [Indexed: 02/04/2023]
Abstract
In this work, we prepared a series of N-functionalized carbon nanotubes by means of a process of acylation-amidation of commercial multiwall carbon nanotubes that were previously pre-oxidized with nitric acid. Three different amines, butylamine, N,N-dimethyl ethylenediamine, and ethylenediamine, were used in the process. The characterization of samples by several techniques probed the incorporation of nitrogen atoms to the carbon nanotubes, especially in the case of ethylenediamine. The solids were tested as catalysts in the synthesis of N-1-heptenyl-2-pyrrolidinone, included in the group of a γ-lactams, compounds that show important biological properties. The most active catalyst was that prepared with butylamine, which exhibited the highest SBET and Vpore values and contained an amount of nitrogen that was intermediate between that of the other two catalysts. A yield of 60% to N-1-heptenyl-2-pyrrolidinone was achieved after 3 h at 120 °C under free-solvent conditions. This catalyst could be used in four consecutive cycles without significant activity loss.
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Affiliation(s)
- Niurka Barrios-Bermúdez
- Departamento de Química Inorgánica y Química Técnica, Facultad de Ciencias, UNED, Urbanización Monterrozas, Las Rozas, 28232 Madrid, Spain;
- Departamento de Ciencias, Escuela de Ingeniería, Arquitectura y Diseño, Universidad Europea de Madrid, c/ Tajo s/n, Villaviciosa de Odón, 28670 Madrid, Spain
| | - Arisbel Cerpa-Naranjo
- Departamento de Ingeniería Industrial y Aeroespacial, Escuela de Ingeniería, Arquitectura y Diseño, Universidad Europea de Madrid, c/ Tajo s/n, Villaviciosa de Odón, 28670 Madrid, Spain;
| | - María Luisa Rojas-Cervantes
- Departamento de Química Inorgánica y Química Técnica, Facultad de Ciencias, UNED, Urbanización Monterrozas, Las Rozas, 28232 Madrid, Spain;
- Correspondence:
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13
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Xu L, Li H, Xing L, Yang Q, Tang Y, Cai Y. Retro-Aza-Piancatelli Rearrangement Triggered Cascade Reaction of Methyl Furylacrylates with Anilines to Access Cyclopenta[ b]pyrrolidinones. J Org Chem 2021; 87:855-865. [PMID: 34905369 DOI: 10.1021/acs.joc.1c02546] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A novel aza-Piancatelli rearrangement triggered cascade reaction has been developed by utilizing methyl furylacrylates as a new type of functionalized furanoxonium ion precursor, permitting rapid and flexible construction of diverse cyclopenta[b]pyrrolidinone derivatives. The unprecedented and highly efficient bicyclic γ-lactam product formation is originated from an unusual retro-aza-Piancatelli rearrangement of the major cis-fused multifunctionalized cyclopentenone to the minor trans-fused one followed by a lactamization reaction.
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Affiliation(s)
- Lei Xu
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
| | - Hongxiang Li
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
| | - Liuzhuang Xing
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
| | - Qian Yang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
| | - Yurong Tang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
| | - Yunfei Cai
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
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14
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Ren X, Tang L, Shen C, Li H, Wang P, Dong K. Enantioselective Hydroesterificative Cyclization of 1,6-Enynes to Chiral γ-Lactams Bearing a Quaternary Carbon Stereocenter. Org Lett 2021; 23:3561-3566. [PMID: 33908782 DOI: 10.1021/acs.orglett.1c00952] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A palladium-catalyzed asymmetric hydroesterification-cyclization of 1,6-enynes with CO and alcohol was developed to efficiently prepare a variety of enantioenriched γ-lactams bearing a chiral quaternary carbon center and a carboxylic ester group. The approach featured good to high chemo-, region-, and enantioselectivities, high atom economy, and mild reaction conditions as well as broad substrate scope. The correlation between the multiple selectivities of such process and the N-substitutes of the amide linker in the 1,6-enyne substrate has been depicted by the crystallographic evidence and control experiments.
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Affiliation(s)
- Xinyi Ren
- Chang-Kung Chuang Institute, and Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P.R. China
| | - Lin Tang
- Chang-Kung Chuang Institute, and Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P.R. China
| | - Chaoren Shen
- Chang-Kung Chuang Institute, and Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P.R. China
| | - Huimin Li
- Chang-Kung Chuang Institute, and Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P.R. China
| | - Peng Wang
- Chang-Kung Chuang Institute, and Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P.R. China
| | - Kaiwu Dong
- Chang-Kung Chuang Institute, and Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P.R. China
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15
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Sietmann J, Ong M, Mück‐Lichtenfeld C, Daniliuc CG, Wahl JM. Desymmetrization of Prochiral Cyclobutanones via Nitrogen Insertion: A Concise Route to Chiral γ-Lactams. Angew Chem Int Ed Engl 2021; 60:9719-9723. [PMID: 33538070 PMCID: PMC8252468 DOI: 10.1002/anie.202100642] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Indexed: 01/08/2023]
Abstract
Asymmetric access to γ-lactams is achieved via a cyclobutanone ring expansion using widely available (1S,2R)-1-amino-2-indanol for chiral induction. Mechanistic analysis of the key N,O-ketal rearrangement reveals a Curtin-Hammett scenario, which enables a downstream stereoinduction (up to 88:12 dr) and is corroborated by spectroscopic, crystallographic, and computational studies. In combination with an easy deprotection protocol, this operationally simple sequence allows the synthesis of a range of optically pure γ-lactams, including those bearing all-carbon quaternary stereocenters. In addition, the formal synthesis of drug molecules baclofen, brivaracetam, and pregabalin further demonstrates the synthetic utility and highlights the general applicability of the presented method.
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Affiliation(s)
- Jan Sietmann
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstrasse 3648149MünsterGermany
| | - Mike Ong
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstrasse 3648149MünsterGermany
| | | | - Constantin G. Daniliuc
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstrasse 3648149MünsterGermany
| | - Johannes M. Wahl
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstrasse 3648149MünsterGermany
- Department ChemieJohannes Gutenberg-UniversitätDuesbergweg 10–1455128MainzGermany
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16
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Sun X, Dong X, Yang Y, Fu J, Wang Y, Li Z, Liu Y, Liu H. Palladium-catalyzed cascade 5-exo-trig radical cyclization/aromatic C-H alkylation with unactivated alkyl iodides. Org Biomol Chem 2021; 19:2676-2680. [PMID: 33710245 DOI: 10.1039/d1ob00346a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A novel and convenient palladium-catalyzed cascade 5-exo-trig radical cyclization/aromatic C-H alkylation with unactivated alkyl iodides has been described. This strategy provides an efficient access to a variety of 3a-methyl-1,2,3,3a,4,8b-hexahydroindeno[1,2-b]pyrrole derivatives, which facilitate access to a series of medically important heterocyclic bioactive molecules. This protocol involves mild catalytic reaction conditions and shows high functional group tolerance with high stereoselectivity. Mechanistic investigations reveal that an alkyl radical pathway is involved in this reaction.
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Affiliation(s)
- Xi Sun
- School of Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo, 255049, P. R. China.
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17
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Sietmann J, Ong M, Mück‐Lichtenfeld C, Daniliuc CG, Wahl JM. Desymmetrisierung von prochiralen Cyclobutanonen via Stickstoffinsertion: Ein einfacher Zugang zu chiralen γ‐Lactamen. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100642] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jan Sietmann
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstraße 36 48149 Münster Deutschland
| | - Mike Ong
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstraße 36 48149 Münster Deutschland
| | - Christian Mück‐Lichtenfeld
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstraße 36 48149 Münster Deutschland
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstraße 36 48149 Münster Deutschland
| | - Johannes M. Wahl
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstraße 36 48149 Münster Deutschland
- Department Chemie Johannes Gutenberg-Universität Duesbergweg 10–14 55128 Mainz Deutschland
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18
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Klychnikov MK, Pohl R, Císařová I, Jahn U. α,γ-Dioxygenated amides via tandem Brook rearrangement/radical oxygenation reactions and their application to syntheses of γ-lactams. Beilstein J Org Chem 2021; 17:688-704. [PMID: 33777244 PMCID: PMC7961876 DOI: 10.3762/bjoc.17.58] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 02/23/2021] [Indexed: 11/23/2022] Open
Abstract
Pyrrolidones are common heterocyclic fragments in various biologically active compounds. Here, a two-step radical-based approach to γ-lactams bearing three to four stereocenters starting from epoxides, N-allylic silylacetamides and TEMPO is reported. The sequence starts with a new tandem nucleophilic substitution/Brook rearrangement/single electron transfer-induced radical oxygenation furnishing orthogonally protected α,γ-dioxygenated N-allylamides with wide scope, mostly good yields, and partly good diastereo- and enantioselectivity for defined combinations of chiral epoxides and chiral amides. This represents a very rare example of an oxidative geminal C-C/C-O difunctionalization next to carbonyl groups. The resulting dioxygenated allylic amides are subsequently subjected to persistent radical effect-based 5-exo-trig radical cyclization reactions providing functionalized pyrrolidones in high yields as diastereomeric mixtures. They converge to 3,4-trans-γ-lactams by base-mediated equilibration, which can be easily further diversified. Stereochemical models for both reaction types were developed.
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Affiliation(s)
- Mikhail K Klychnikov
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 2, 16610 Prague 6, Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 2, 16610 Prague 6, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Prague 2, Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 2, 16610 Prague 6, Czech Republic
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19
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Wu LS, Ding Y, Han YQ, Shi BF. Asymmetric Synthesis of γ-Lactams Containing α,β-Contiguous Stereocenters via Pd(II)-Catalyzed Cascade Methylene C(sp3)–H Alkenylation/Aza-Wacker Cyclization. Org Lett 2021; 23:2048-2051. [DOI: 10.1021/acs.orglett.1c00204] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Le-Song Wu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yi Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Ye-Qiang Han
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Bing-Feng Shi
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
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20
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Ji Y, Zhang M, Xing M, Cui H, Zhao Q, Zhang C. Transition Metal Catalyzed Enantioselective Borylative Cyclization Reactions. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000419] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yuqi Ji
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Rd. 92 Tianjin 300072 China
| | - Min Zhang
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Rd. 92 Tianjin 300072 China
| | - Mimi Xing
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Rd. 92 Tianjin 300072 China
| | - Huanhuan Cui
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Rd. 92 Tianjin 300072 China
| | - Qian Zhao
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Rd. 92 Tianjin 300072 China
| | - Chun Zhang
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Rd. 92 Tianjin 300072 China
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21
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Alves AJS, Alves NG, Soares MIL, Pinho e Melo TMVD. Strategies and methodologies for the construction of spiro-γ-lactams: an update. Org Chem Front 2021. [DOI: 10.1039/d0qo01564d] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This review gives an insight into the most recent synthetic methodologies towards spiro-γ-lactams, a class of compounds that are present in a wide range of synthetic bioactive and naturally occurring molecules.
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Affiliation(s)
- Américo J. S. Alves
- University of Coimbra
- Coimbra Chemistry Centre and Department of Chemistry
- 3004-535 Coimbra
- Portugal
| | - Nuno G. Alves
- University of Coimbra
- Coimbra Chemistry Centre and Department of Chemistry
- 3004-535 Coimbra
- Portugal
| | - Maria I. L. Soares
- University of Coimbra
- Coimbra Chemistry Centre and Department of Chemistry
- 3004-535 Coimbra
- Portugal
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22
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Zhang Y, Zhang Y, Guo J, Han J, Zhou X, Fu Z. Asymmetric synthesis of γ-lactams under low-loading N-heterocyclic carbene catalysis. Org Chem Front 2021. [DOI: 10.1039/d1qo00743b] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Low-loading N-heterocyclic carbene-catalyzed oxidative formal [3 + 2] annulation of enals with N-Ts diethyl aminomalonate has been successfully developed.
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Affiliation(s)
- Yuxia Zhang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Ye Zhang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Jingcheng Guo
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Jinna Han
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Xiangui Zhou
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Zhenqian Fu
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
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23
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Ishii D, Hirashima SI, Nakashima K, Akutsu H, Sakai T, Matsushima Y, Kawada M, Miura T. Asymmetric Direct Vinylogous Conjugate Addition of Substituted Furanone Derivatives to Benzoyl Acrylonitrile: Stereoselective Synthesis Toward Bicyclic γ-Lactams. Org Lett 2020; 23:480-485. [DOI: 10.1021/acs.orglett.0c04004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Daiki Ishii
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Shin-ichi Hirashima
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Kosuke Nakashima
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Hiroshi Akutsu
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Takaaki Sakai
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Yasuyuki Matsushima
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Masahiro Kawada
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Tsuyoshi Miura
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
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24
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Pd(II)‐Catalyzed Tandem Enantioselective Methylene C(sp
3
)−H Alkenylation–Aza‐Wacker Cyclization to Access β‐Stereogenic γ‐Lactams. Angew Chem Int Ed Engl 2020; 59:14060-14064. [DOI: 10.1002/anie.202004504] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/24/2020] [Indexed: 01/28/2023]
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25
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Ding Y, Han Y, Wu L, Zhou T, Yao Q, Feng Y, Li Y, Kong K, Shi B. Pd(II)‐Catalyzed Tandem Enantioselective Methylene C(sp
3
)−H Alkenylation–Aza‐Wacker Cyclization to Access β‐Stereogenic γ‐Lactams. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004504] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yi Ding
- Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Ye‐Qiang Han
- Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Le‐Song Wu
- Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Tao Zhou
- Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Qi‐Jun Yao
- Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Ya‐Lan Feng
- Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Ya Li
- Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Ke‐Xin Kong
- Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Bing‐Feng Shi
- Department of Chemistry Zhejiang University Hangzhou 310027 China
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26
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Liu J, Shi G, Chen Z. Synthesis of
γ
‐Spirolactams from Blaise Reaction Intermediates and 1,2‐Dicarbonyl Compounds. ChemistrySelect 2020. [DOI: 10.1002/slct.202000631] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jin Liu
- College of Pharmaceutical SciencesZhejiang University of Technology. Chao Wang Road 18th 310014 Hangzhou China
| | - Guang Shi
- College of Pharmaceutical SciencesZhejiang University of Technology. Chao Wang Road 18th 310014 Hangzhou China
| | - Zhiwei Chen
- College of Pharmaceutical SciencesZhejiang University of Technology. Chao Wang Road 18th 310014 Hangzhou China
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27
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Shi Y, Tan X, Gao S, Zhang Y, Wang J, Zhang X, Yin Q. Direct Synthesis of Chiral NH Lactams via Ru-Catalyzed Asymmetric Reductive Amination/Cyclization Cascade of Keto Acids/Esters. Org Lett 2020; 22:2707-2713. [DOI: 10.1021/acs.orglett.0c00669] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yongjie Shi
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Xuefeng Tan
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Shuang Gao
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yao Zhang
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jingxin Wang
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xumu Zhang
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qin Yin
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518000, China
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28
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Zhao QS, Xu GQ, Xu JT, Wang ZY, Xu PF. A lutidine-promoted photoredox catalytic atom-transfer radical cyclization reaction for the synthesis of 4-bromo-3,3-dialkyl-octahydro-indol-2-ones. Chem Commun (Camb) 2020; 56:2206-2209. [PMID: 31976501 DOI: 10.1039/c9cc09876c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reported herein is a visible-light-catalyzed photoredox atom-transfer radical cyclization (ATRC) halo-alkylation of 1,6-dienes with α-halo-ketones as the ATRC reagent. This process exhibits high atom economy, high step economy, and high redox economy, which can directly construct a 4-bromo-3,3-dialkyl-octahydro-indol-2-one core under mild conditions in one pot, and lutidine is found to be the key promoter for this ATRC process.
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Affiliation(s)
- Quan-Sheng Zhao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China. and 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 241002, P. R. China
| | - Guo-Qiang Xu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Ji-Tao Xu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Zhu-Yin Wang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
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29
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Ashida K, Hoshimoto Y, Tohnai N, Scott DE, Ohashi M, Imaizumi H, Tsuchiya Y, Ogoshi S. Enantioselective Synthesis of Polycyclic γ-Lactams with Multiple Chiral Carbon Centers via Ni(0)-Catalyzed Asymmetric Carbonylative Cycloadditions without Stirring. J Am Chem Soc 2019; 142:1594-1602. [DOI: 10.1021/jacs.9b12493] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Keita Ashida
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yoichi Hoshimoto
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Norimitsu Tohnai
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - David E. Scott
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Masato Ohashi
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
| | - Hanae Imaizumi
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Yuichiro Tsuchiya
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Sensuke Ogoshi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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30
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He C, Li Z, Zhou H, Xu J. Stereoselective [8 + 2] Cycloaddition Reaction of Azaheptafulvenes with α-Chloro Aldehydes via N-Heterocyclic Carbene Catalysis. Org Lett 2019; 21:8022-8026. [DOI: 10.1021/acs.orglett.9b03014] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Chonglong He
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Zhanhuan Li
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Hongwei Zhou
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Jianfeng Xu
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
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31
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Li H, Wu H, Zhang H, Su Y, Yang S, Hensen EJM. A Facile Direct Route to N-(Un)substituted Lactams by Cycloamination of Oxocarboxylic Acids without External Hydrogen. CHEMSUSCHEM 2019; 12:3778-3784. [PMID: 31278839 PMCID: PMC6772168 DOI: 10.1002/cssc.201901780] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Indexed: 05/22/2023]
Abstract
Lactams are privileged in bioactive natural products and pharmaceutical agents and widely featured in functional materials. This study presents a novel versatile approach to the direct synthesis of lactams from oxocarboxylic acids without catalyst or external hydrogen. The method involves the in situ release of formic acid from formamides induced by water to facilitate efficient cycloamination. Water also suppresses the formation of byproducts. This unconventional pathway is elucidated by a combination of model experiments and density functional theory calculations, whereby cyclic imines (5-methyl-3,4-dihydro-2-pyrrolone and its tautomeric structures) are found to be favorable intermediates toward lactam formation, in contrast to the conventional approach encompassing cascade reductive amination and cyclization. This sustainable and simple protocol is broadly applicable for the efficient production of various N-unsubstituted and N-substituted lactams.
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Affiliation(s)
- Hu Li
- State Key Laboratory Breeding Base of Green Pesticide & Agricultural BioengineeringKey Laboratory of Green Pesticide & Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive, Utilization of BiomassCenter for R&D of Fine ChemicalsGuizhou UniversityGuiyangGuizhou550025P.R. China
| | - Hongguo Wu
- State Key Laboratory Breeding Base of Green Pesticide & Agricultural BioengineeringKey Laboratory of Green Pesticide & Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive, Utilization of BiomassCenter for R&D of Fine ChemicalsGuizhou UniversityGuiyangGuizhou550025P.R. China
| | - Heng Zhang
- State Key Laboratory Breeding Base of Green Pesticide & Agricultural BioengineeringKey Laboratory of Green Pesticide & Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive, Utilization of BiomassCenter for R&D of Fine ChemicalsGuizhou UniversityGuiyangGuizhou550025P.R. China
| | - Yaqiong Su
- Laboratory of Inorganic Materials & Catalysis, Schuit Institute of CatalysisDepartment of Chemical Engineering and ChemistryEindhoven University of TechnologyP.O. Box 513, 5600MBEindhovenThe Netherlands
| | - Song Yang
- State Key Laboratory Breeding Base of Green Pesticide & Agricultural BioengineeringKey Laboratory of Green Pesticide & Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive, Utilization of BiomassCenter for R&D of Fine ChemicalsGuizhou UniversityGuiyangGuizhou550025P.R. China
| | - Emiel J. M. Hensen
- Laboratory of Inorganic Materials & Catalysis, Schuit Institute of CatalysisDepartment of Chemical Engineering and ChemistryEindhoven University of TechnologyP.O. Box 513, 5600MBEindhovenThe Netherlands
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32
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Wang H, Park Y, Bai Z, Chang S, He G, Chen G. Iridium-Catalyzed Enantioselective C(sp 3)-H Amidation Controlled by Attractive Noncovalent Interactions. J Am Chem Soc 2019; 141:7194-7201. [PMID: 30978019 DOI: 10.1021/jacs.9b02811] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
While remarkable progress has been made over the past decade, new design strategies for chiral catalysts in enantioselective C(sp3)-H functionalization reactions are still highly desirable. In particular, the ability to use attractive noncovalent interactions for rate acceleration and enantiocontrol would significantly expand the current arsenal for asymmetric metal catalysis. Herein, we report the development of a highly enantioselective Ir(III)-catalyzed intramolecular C(sp3)-H amidation reaction of dioxazolone substrates for synthesis of optically enriched γ-lactams using a newly designed α-amino-acid-based chiral ligand. This Ir-catalyzed reaction proceeds with excellent efficiency and with outstanding enantioselectivity for both activated and unactivated alkyl C(sp3)-H bonds under very mild conditions. It offers the first general route for asymmetric synthesis of γ-alkyl γ-lactams. Water was found to be a unique cosolvent to achieve excellent enantioselectivity for γ-aryl lactam production. Mechanistic studies revealed that the ligands form a well-defined groove-type chiral pocket around the Ir center. The hydrophobic effect of this pocket allows facile stereocontrolled binding of substrates in polar or aqueous media. Instead of capitalizing on steric repulsions as in the conventional approaches, this new Ir catalyst operates through an unprecedented enantiocontrol mechanism for intramolecular nitrenoid C-H insertion featuring multiple attractive noncovalent interactions.
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Affiliation(s)
- Hao Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Yoonsu Park
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon 34141 , Republic of Korea
| | - Ziqian Bai
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Sukbok Chang
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon 34141 , Republic of Korea
| | - Gang He
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Gong Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
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33
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Jette CI, Geibel I, Bachman S, Hayashi M, Sakurai S, Shimizu H, Morgan JB, Stoltz BM. Palladium-Catalyzed Construction of Quaternary Stereocenters by Enantioselective Arylation of γ-Lactams with Aryl Chlorides and Bromides. Angew Chem Int Ed Engl 2019; 58:4297-4301. [PMID: 30677201 DOI: 10.1002/anie.201814475] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 01/20/2019] [Indexed: 11/11/2022]
Abstract
Herein, we report the first Pd-catalyzed enantioselective arylation of α-substituted γ-lactams. Two sets of conditions were developed for this transformation, allowing for the use of either aryl chlorides or bromides as electrophiles. Utilizing a highly electron-rich dialkylphosphine ligand we have been able to construct α-quaternary centers in good yields (up to 91 % yield) and high enantioselectivities (up to 97 % ee).
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Affiliation(s)
- Carina I Jette
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd. MC 101-20, Pasadena, CA, 91125, USA
| | - Irina Geibel
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd. MC 101-20, Pasadena, CA, 91125, USA
| | - Shoshana Bachman
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd. MC 101-20, Pasadena, CA, 91125, USA
| | - Masaki Hayashi
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd. MC 101-20, Pasadena, CA, 91125, USA
| | - Shunya Sakurai
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd. MC 101-20, Pasadena, CA, 91125, USA
| | - Hideki Shimizu
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd. MC 101-20, Pasadena, CA, 91125, USA
| | - Jeremy B Morgan
- Dobo Hall, Department of Chemistry and Biochemistry, University of North Carolina, 601 S. College Rd., Wilmington, NC, 28403, USA
| | - Brian M Stoltz
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd. MC 101-20, Pasadena, CA, 91125, USA
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34
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Wallbaum L, Schulz T, Bruhn C, Siemeling U. The reaction of a particularly electrophilic acyclic diaminocarbene with carbon monoxide: formation of β- and γ-lactams. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2019. [DOI: 10.1515/znb-2018-0255] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The reaction of carbon monoxide with the acyclic diaminocarbene iPr2N–C–TMP (TMP=2,2,6,6-tetramethylpiperidino), generated in situ from the formamidinium salt [(iPr2N)CH(TMP)][PF6] and NaN(SiMe3)2, unexpectedly afforded a mixture of β- and γ-lactams.
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Affiliation(s)
- Lars Wallbaum
- Institut für Chemie, Universität Kassel , Heinrich-Plett-Straße 40 , 34132 Kassel , Germany
| | - Tim Schulz
- Institut für Chemie, Universität Kassel , Heinrich-Plett-Straße 40 , 34132 Kassel , Germany
| | - Clemens Bruhn
- Institut für Chemie, Universität Kassel , Heinrich-Plett-Straße 40 , 34132 Kassel , Germany
| | - Ulrich Siemeling
- Institut für Chemie, Universität Kassel , Heinrich-Plett-Straße 40 , 34132 Kassel , Germany , Fax: +49 561 804 4777
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35
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Jette CI, Geibel I, Bachman S, Hayashi M, Sakurai S, Shimizu H, Morgan JB, Stoltz BM. Palladium‐Catalyzed Construction of Quaternary Stereocenters by Enantioselective Arylation of γ‐Lactams with Aryl Chlorides and Bromides. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814475] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Carina I. Jette
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering California Institute of Technology 1200 E. California Blvd. MC 101-20 Pasadena CA 91125 USA
| | - Irina Geibel
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering California Institute of Technology 1200 E. California Blvd. MC 101-20 Pasadena CA 91125 USA
| | - Shoshana Bachman
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering California Institute of Technology 1200 E. California Blvd. MC 101-20 Pasadena CA 91125 USA
| | - Masaki Hayashi
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering California Institute of Technology 1200 E. California Blvd. MC 101-20 Pasadena CA 91125 USA
| | - Shunya Sakurai
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering California Institute of Technology 1200 E. California Blvd. MC 101-20 Pasadena CA 91125 USA
| | - Hideki Shimizu
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering California Institute of Technology 1200 E. California Blvd. MC 101-20 Pasadena CA 91125 USA
| | - Jeremy B. Morgan
- Dobo Hall Department of Chemistry and Biochemistry University of North Carolina 601 S. College Rd. Wilmington NC 28403 USA
| | - Brian M. Stoltz
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering California Institute of Technology 1200 E. California Blvd. MC 101-20 Pasadena CA 91125 USA
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36
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Jia J, Ho YA, Bülow RF, Rueping M. Brønsted Base Assisted Photoredox Catalysis: Proton Coupled Electron Transfer for Remote C−C Bond Formation via Amidyl Radicals. Chemistry 2018; 24:14054-14058. [DOI: 10.1002/chem.201802907] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Indexed: 01/28/2023]
Affiliation(s)
- Jiaqi Jia
- Institute of Organic Chemistry, RWTH Aachen Landoltweg 1 52074 Aachen Germany
| | - Yee Ann Ho
- Institute of Organic Chemistry, RWTH Aachen Landoltweg 1 52074 Aachen Germany
| | - Raoul F. Bülow
- Institute of Organic Chemistry, RWTH Aachen Landoltweg 1 52074 Aachen Germany
| | - Magnus Rueping
- Institute of Organic Chemistry, RWTH Aachen Landoltweg 1 52074 Aachen Germany
- King Abdullah University of Science and Technology (KAUST)KAUST Catalysis Center (KCC) Thuwal 23955-6900 Saudi Arabia
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37
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Wang C, Ge S. Versatile Cobalt-Catalyzed Enantioselective Entry to Boryl-Functionalized All-Carbon Quaternary Stereogenic Centers. J Am Chem Soc 2018; 140:10687-10690. [DOI: 10.1021/jacs.8b06814] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Chao Wang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Shaozhong Ge
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
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38
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Lang Q, Gu G, Cheng Y, Yin Q, Zhang X. Highly Enantioselective Synthesis of Chiral γ-Lactams by Rh-Catalyzed Asymmetric Hydrogenation. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00827] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qiwei Lang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, People’s Republic of China
| | - Guoxian Gu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, People’s Republic of China
| | - Yaoti Cheng
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, People’s Republic of China
| | - Qin Yin
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, People’s Republic of China
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518000, People’s Republic of China
| | - Xumu Zhang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, People’s Republic of China
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39
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2016. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.09.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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40
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Krüger T, Kelling A, Schilde U, Linker T. Simple Synthesis of γ-Spirolactams by Birch Reduction of Benzoic Acids. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601650] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tobias Krüger
- Department of Chemistry; University of Potsdam; Karl-Liebknecht-Str. 24-25 14476 Potsdam Germany
| | - Alexandra Kelling
- Department of Chemistry; University of Potsdam; Karl-Liebknecht-Str. 24-25 14476 Potsdam Germany
| | - Uwe Schilde
- Department of Chemistry; University of Potsdam; Karl-Liebknecht-Str. 24-25 14476 Potsdam Germany
| | - Torsten Linker
- Department of Chemistry; University of Potsdam; Karl-Liebknecht-Str. 24-25 14476 Potsdam Germany
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41
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Soleimani-Amiri S, Vessally E, Babazadeh M, Hosseinian A, Edjlali L. Intramolecular cyclization of N-allyl propiolamides: a facile synthetic route to highly substituted γ-lactams (a review). RSC Adv 2017. [DOI: 10.1039/c7ra03075d] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The development of simple and efficient methods for construction of substituted γ-lactams is an important synthetic goal because such ring skeletons are present in numerous natural compounds that display diverse biological activities.
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Affiliation(s)
| | | | | | - Akram Hosseinian
- Department of Engineering Science
- College of Engineering
- University of Tehran
- Tehran
- Iran
| | - Ladan Edjlali
- Department of Chemistry
- Tabriz Branch
- Islamic Azad University
- Tabriz
- Iran
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42
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Xuan J, Daniliuc CG, Studer A. Construction of Polycyclic γ-Lactams and Related Heterocycles via Electron Catalysis. Org Lett 2016; 18:6372-6375. [PMID: 27978670 PMCID: PMC5168651 DOI: 10.1021/acs.orglett.6b03267] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
![]()
Cascade radical cyclization of 1,6-enynes
for the construction
of biologically important polycyclic γ-lactams and related heterocycles
is reported. In these radical cascade processes, three new C–C
bonds are formed and transition metals are not required to run these
sequences. The mild reaction conditions, broad substrate scope, and
the importance of the heterocyclic products render the approach valuable.
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Affiliation(s)
- Jun Xuan
- Department of Chemistry, Anhui University , Hefei, Anhui 230601, China.,Organisch-Chemisches Institut, Westfälische Wilhelms-Universität , Corrensstraβe 40, 48149 Münster, Germany
| | - Constantin G Daniliuc
- 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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