1
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Luo M, Li L, Chen S, Yan Q, Lv J, Zeng J, Wang H, Gu S, Chen F. Synthesis of 2,4-Disubstituted Oxazoles and Thiazoles via Brønsted Acid-Catalyzed Cyclization of α-diazoketones with Amides. J Org Chem 2024; 89:5038-5048. [PMID: 38517950 DOI: 10.1021/acs.joc.4c00269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2024]
Abstract
A novel method is described for the synthesis of 2,4-disubstituted oxazole and thiazole derivates via the coupling of α-diazoketones with (thio)amides or thioureas using trifluoromethanesulfonic acid (TfOH) as a catalyst. This protocol is characterized by mild reaction conditions, metal-free, and simplicity and also features good functional group tolerance, good to excellent yields, and a broad substrate scope with more than 40 examples. Experimental studies suggest a mechanism involving 2-oxo-2-phenylethyl trifluoromethanesulfonate as the key intermediate.
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Affiliation(s)
- Mengxiang Luo
- School of Chemical Engineering & Pharmacy and Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, China
| | - Lewan Li
- School of Chemical Engineering & Pharmacy and Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, China
| | - Shixin Chen
- School of Chemical Engineering & Pharmacy and Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, China
| | - Qiongjiao Yan
- School of Chemical Engineering & Pharmacy and Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, China
| | - Jian Lv
- School of Chemical Engineering & Pharmacy and Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, China
| | - Jie Zeng
- School of Chemical Engineering & Pharmacy and Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, China
| | - Haifeng Wang
- School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan 430205, China
- Jiangxi Province Key Laboratory of Synthetic Chemistry, East China University of Technology, Nanchang 330013, China
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, China
- Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Wuhan 430205, China
| | - Shuangxi Gu
- School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan 430205, China
| | - Fener Chen
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, China
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, China
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, Shanghai 200433, China
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2
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Jiang D, Jia J, Wang B, Li B. Access to 5-fluoroalkylated trisubstituted oxazoles via copper-catalyzed cyclization of α-fluoroalkyl-α-diazoketones with amides. Chem Commun (Camb) 2022; 58:4853-4856. [PMID: 35348157 DOI: 10.1039/d2cc01057g] [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
A novel copper-catalyzed cyclization of α-fluoroalkyl-α-diazoketones with (thio)amides has been developed. This mechanistically distinct protocol provides a robust and straightforward approach to construct 5-fluoroalkylated trisubstituted oxazoles and thiazoles with high efficiency and excellent functional group compatibility. Experimental studies suggest a mechanism involving imidate ligand migratory insertion of a copper carbenoid as the key step.
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Affiliation(s)
- Di Jiang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Jingpei Jia
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Baiquan Wang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China. .,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Bin Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
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3
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Brambilla E, Abbiati G, Caselli A, Pirovano V, Rossi E. Coinage metal carbenes in heterocyclic synthesis via formation of new carbon-heteroatom bonds. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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4
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Zhang FG, Chen Z, Tang X, Ma JA. Triazines: Syntheses and Inverse Electron-demand Diels-Alder Reactions. Chem Rev 2021; 121:14555-14593. [PMID: 34586777 DOI: 10.1021/acs.chemrev.1c00611] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Triazines are an important class of six-membered aromatic heterocycles possessing three nitrogen atoms, resulting in three types of regio-isomers: 1,2,4-triazines (a-triazines), 1,2,3-triazines (v-triazines), and 1,3,5-triazines (s-triazines). Notably, the application of triazines as cyclic aza-dienes in inverse electron-demand Diels-Alder (IEDDA) cycloaddition reactions has been established as a unique and powerful method in N-heterocycle synthesis, natural product preparation, and bioorthogonal chemistry. In this review, we comprehensively summarize the advances in the construction of these triazines via annulation and ring-expansion reactions, especially emphasizing recent developments and challenges. The synthetic transformations of triazines are focused on IEDDA cycloaddition reactions, which have allowed access to a wide scope of heterocycles, including pyridines, carbolines, azepines, pyridazines, pyrazines, and pyrimidines. The utilization of triazine IEDDA reactions as key steps in natural product synthesis is also discussed. More importantly, a particular attention is paid on the bioorthogonal application of triazines in fast click ligation with various strained alkenes and alkynes, which opens a new opportunity for studying biomolecules in chemical biology.
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Affiliation(s)
- Fa-Guang Zhang
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Frontiers Science Center for Synthetic Biology (Ministry of Education), and Tianjin Collaborative Innovation Center of Chemical Science & Engineering, Tianjin University, Tianjin 300072, P. R. China.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, P. R. China
| | - Zhen Chen
- College of Chemical Engineering, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, Nanjing Forestry University, Nanjing, Jiangsu 210037, P. R. China
| | - Xiaodong Tang
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Frontiers Science Center for Synthetic Biology (Ministry of Education), and Tianjin Collaborative Innovation Center of Chemical Science & Engineering, Tianjin University, Tianjin 300072, P. R. China.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, P. R. China
| | - Jun-An Ma
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Frontiers Science Center for Synthetic Biology (Ministry of Education), and Tianjin Collaborative Innovation Center of Chemical Science & Engineering, Tianjin University, Tianjin 300072, P. R. China.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, P. R. China
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5
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Li Y, Zhang CL, Huang WH, Sun N, Hao M, Neumann H, Beller M. A general strategy for the synthesis of α-trifluoromethyl- and α-perfluoroalkyl-β-lactams via palladium-catalyzed carbonylation. Chem Sci 2021; 12:10467-10473. [PMID: 34447539 PMCID: PMC8361786 DOI: 10.1039/d1sc02212a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 06/30/2021] [Indexed: 11/30/2022] Open
Abstract
β-Lactam compounds play a key role in medicinal chemistry, specifically as the most important class of antibiotics. Here, we report a novel one-step approach for the synthesis of α-(trifluoromethyl)-β-lactams and related products from fluorinated olefins, anilines and CO. Utilization of an advanced palladium catalyst system with the Ruphos ligand allows for selective cycloaminocarbonylations to give diverse fluorinated β-lactams in high yields.
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Affiliation(s)
- Yang Li
- Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, School of Environmental and Chemical Engineering, Xi'an Polytechnic University No. 19 Jinhua South Road 710048 Xi'an China
- Leibniz-Institut für Katalyse e.V. RostockAlbert-Einstein-Straße 29a 18059 Rostock Germany
| | - Cai-Lin Zhang
- Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, School of Environmental and Chemical Engineering, Xi'an Polytechnic University No. 19 Jinhua South Road 710048 Xi'an China
| | - Wei-Heng Huang
- Leibniz-Institut für Katalyse e.V. RostockAlbert-Einstein-Straße 29a 18059 Rostock Germany
| | - Ning Sun
- Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, School of Environmental and Chemical Engineering, Xi'an Polytechnic University No. 19 Jinhua South Road 710048 Xi'an China
| | - Meng Hao
- Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, School of Environmental and Chemical Engineering, Xi'an Polytechnic University No. 19 Jinhua South Road 710048 Xi'an China
| | - Helfried Neumann
- Leibniz-Institut für Katalyse e.V. RostockAlbert-Einstein-Straße 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V. RostockAlbert-Einstein-Straße 29a 18059 Rostock Germany
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6
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Inyutina A, Dar'in D, Kantin G, Krasavin M. Tricyclic 2-benzazepines obtained via an unexpected cyclization involving nitrilium ylides. Org Biomol Chem 2021; 19:5068-5071. [PMID: 34027962 DOI: 10.1039/d1ob00773d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Attempted use of (E)-3-arylidene-4-diazopyrrolidine-2,5-diones in the Rh(ii)-catalyzed condensation with nitriles to form 1,3-oxazoles led to an unexpected outcome. The nitrilium ylide species thought to form on Rh(ii)-catalyzed decomposition of diazo compounds underwent a cyclization onto the nearby arylidene moiety followed by 1,5-hydride shift. This led to the formation of a 2-benzazepine core which has special significance for drug discovery and can be considered a privileged scaffold.
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Affiliation(s)
- Anna Inyutina
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation.
| | - Dmitry Dar'in
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation.
| | - Grigory Kantin
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation.
| | - Mikhail Krasavin
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation.
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7
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Patel SM, P EP, Bakthadoss M, Sharada DS. Photocatalytic Visible-Light-Induced Nitrogen Insertion via Dual C(sp 3)-H and C(sp 2)-H Bond Functionalization: Access to Privileged Imidazole-based Scaffolds. Org Lett 2021; 23:257-261. [PMID: 33373256 DOI: 10.1021/acs.orglett.0c03269] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Here we have demonstrated a visible-light-mediated metal-free organic-dye-catalyzed dehydrogenative N-insertion leading to highly substituted imidazoles and privileged dihydroisoquinoline-based imidazole derivatives via C(sp3)-H and C(sp2)-H bond functionalization. A sustainable, convenient, metal-free azidation/C-H aminative cyclization approach in the absence of stoichiometric oxidants is presented. This protocol involves a rare photoinduced iminyl radical as a key intermediate for the "N" insertion.
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Affiliation(s)
- Srilaxmi M Patel
- Indian Institute of Technology (IIT) Hyderabad, Kandi, Sangareddy, Telangana 502 285, India
| | - Ermiya Prasad P
- Indian Institute of Technology (IIT) Hyderabad, Kandi, Sangareddy, Telangana 502 285, India
| | | | - Duddu S Sharada
- Indian Institute of Technology (IIT) Hyderabad, Kandi, Sangareddy, Telangana 502 285, India
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8
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Kawase M, Saijo R. The Fascinating Chemistry of Mesoionic 4-Trifluoroacetyl-1,3-oxazolium-5-olates and Related Compounds. HETEROCYCLES 2021. [DOI: 10.3987/rev-21-955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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Karuppusamy V, Ilangovan A. BF 3·OEt 2-TFAA Mediated Tetra-Functionalization of Amino Acids - Synthesis of Di- and Tri-Substituted 2-Trifluoromethyl Oxazoles in One Pot. Org Lett 2020; 22:7147-7151. [PMID: 32903018 DOI: 10.1021/acs.orglett.0c02484] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A highly efficient, TFAA-BF3·OEt2 mediated multicomponent coupling of amino acid, TFAA, and aromatics provides a broad library of 2-trifluoromethyl equipped 2,5-disubstituted/2,4,5-trisubstituted oxazoles or N-(trifluoroacetyl)-β-aminoalkyl ketones. This amino acid tetra-functionalization approach involves amidation (C-N), anhydride (C-O), Friedel-Crafts acylation (C-C), and Robinson-Gabriel annulation (C-O) followed by dehydrative aromatization. This reaction takes place under operationally simple, mild, and metal-free conditions using readily available amino acids and aromatic compounds.
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Affiliation(s)
- Velusamy Karuppusamy
- School of Chemistry, Bharathidasan University, Tiruchirappalli 620024, India.,Department of Pharmaceutical Research & Development, Biocon Limited, Biocon Campus, Bangalore-560100, India
| | - Andivelu Ilangovan
- School of Chemistry, Bharathidasan University, Tiruchirappalli 620024, India
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10
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Mlostoń G, Heimgartner H. Reactions of thiocarbonyl compounds with electrophilic and nucleophilic carbenes as well as with their metal complexes. J Sulphur Chem 2020. [DOI: 10.1080/17415993.2020.1780237] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Grzegorz Mlostoń
- Department of Organic and Applied Chemistry, University of Łódź, Łódź, Poland
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11
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Fang Z, Yin H, Lin L, Wen S, Xie L, Huang Y, Weng Z. Collaborative Activation of Trifluoroacetyl Diazoester by a Lewis Acid and Base for the Synthesis of Polysubstituted 4-Trifluoromethylpyrazoles. J Org Chem 2020; 85:8714-8722. [DOI: 10.1021/acs.joc.0c00737] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Zheng Fang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Hongshan Yin
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Lu Lin
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Shunli Wen
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Lili Xie
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Yangjie Huang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
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12
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Saito M, Kobayashi Y, Takemoto Y. Divergent and Chemoselective Transformations of Thioamides with Designed Carbene Equivalents. Chemistry 2019; 25:10314-10318. [DOI: 10.1002/chem.201902699] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Indexed: 01/03/2023]
Affiliation(s)
- Masato Saito
- Graduate School of Pharmaceutical SciencesKyoto University 46-29 Shimoadachi-cho, Yoshida, Sakyo-ku Kyoto 606-8501 Japan
| | - Yusuke Kobayashi
- Graduate School of Pharmaceutical SciencesKyoto University 46-29 Shimoadachi-cho, Yoshida, Sakyo-ku Kyoto 606-8501 Japan
| | - Yoshiji Takemoto
- Graduate School of Pharmaceutical SciencesKyoto University 46-29 Shimoadachi-cho, Yoshida, Sakyo-ku Kyoto 606-8501 Japan
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13
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Izquierdo J, Jain AD, Abdulkadir SA, Schiltz GE. Palladium-catalyzed coupling reactions on functionalized 2-trifluoromethyl-4-chromenone scaffolds. Synthesis of highly functionalized trifluoromethyl-heterocycles. SYNTHESIS-STUTTGART 2019; 51:1342-1352. [PMID: 31274934 PMCID: PMC6605783 DOI: 10.1055/s-0037-1610669] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The chromenone core is a ubiquitous group in biologically-active natural products and has been extensively used in organic synthesis. Fluorine derived compounds, including those with a trifluoromethyl group (-CF3), have shown enhanced biological activities in numerous pharmaceuticals compared with their non-fluorinated analogs. We have found that 2-trifluoromethyl chromenones can be readily functionalized in the 8- and 7-positions, providing chromenones cores of high structural complexity which are excellent precursors for numerous trifluoromethyl-heterocycles.
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Affiliation(s)
- Javier Izquierdo
- Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois, USA
| | - Atul D Jain
- Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois, USA
| | - Sarki A Abdulkadir
- Department of Urology, Northwestern University, Chicago, Illinois, USA
- Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, United States
| | - Gary E Schiltz
- Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois, USA
- Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, United States
- Department of Pharmacology, Northwestern University, Chicago, Illinois, USA
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14
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Progress in intermolecular and intramolecular reactions of thioamides with diazo compounds and azides. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.01.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Fe3O4 MNPs as a green catalyst for syntheses of functionalized [1,3]-oxazole and 1H-pyrrolo-[1,3]-oxazole derivatives and evaluation of their antioxidant activity. Mol Divers 2019; 23:885-896. [DOI: 10.1007/s11030-019-09916-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 01/06/2019] [Indexed: 12/21/2022]
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16
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Kondratov IS, Tolmachova NA, Haufe G. Diels-Alder Reaction in the Synthesis of Fluorinated (Hetero)Aromatic Compounds. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800327] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Ivan S. Kondratov
- Institute of Bioorganic Chemistry and Petrochemistry; National Ukrainian Academy of Science; Murmanska St. 1 02660 Kyiv Ukraine
- Enamine Ltd; Chervonotkatska St. 79 02094 Kyiv Ukraine
| | - Nataliya A. Tolmachova
- Institute of Bioorganic Chemistry and Petrochemistry; National Ukrainian Academy of Science; Murmanska St. 1 02660 Kyiv Ukraine
- Enamine Ltd; Chervonotkatska St. 79 02094 Kyiv Ukraine
| | - Günter Haufe
- Organisch-Chemisches Institut; Universität Münster; Corrensstraße 40 48149 Münster Germany
- Cells-in-Motion Cluster of Excellence; Universität Münster; Waldeyerstraße 15 48149 Münster Germany
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17
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Zhang L, Chen JJ, Liu SS, Liang YX, Zhao YL. DBU-Catalyzed [3+3] and [3+2] Annulation Reactions of Azomethine Ylides with α-Diazocarbonyls asN-Terminal Electrophiles: Modular, Atom-Economical Access to 1,2,4-Triazine and 1,2,4-Triazole Derivatives. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800030] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Lu Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Faculty of Chemistry; Northeast Normal University; Changchun 130024 People's Republic of China
| | - Jia-Jia Chen
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Faculty of Chemistry; Northeast Normal University; Changchun 130024 People's Republic of China
| | - Sha-Sha Liu
- School of Geographical Sciences; Northeast Normal University; Changchun 130024 People's Republic of China
| | - Yong-Xin Liang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Faculty of Chemistry; Northeast Normal University; Changchun 130024 People's Republic of China
| | - Yu-Long Zhao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Faculty of Chemistry; Northeast Normal University; Changchun 130024 People's Republic of China
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18
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Tong W, Li WH, He Y, Mo ZY, Tang HT, Wang HS, Pan YM. Palladium-Metalated Porous Organic Polymers as Recyclable Catalysts for the Chemioselective Synthesis of Thiazoles from Thiobenzamides and Isonitriles. Org Lett 2018; 20:2494-2498. [PMID: 29620903 DOI: 10.1021/acs.orglett.8b00886] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two types of thiazole derivatives are synthesized through a multistep cascade sequence with Pd-metalated phosphorus-doped porous organic polymers (POPs) as heterogeneous catalysts. The POPs could be used as both ligands and catalyst supports. No obvious aggregation and loss of any catalytic activity of the catalysts were observed after 10 runs of the reaction. More importantly, imidazo[4,5- d]thiazoles, which are a new class of thiazole derivatives, could be obtained through K2CO3-promoted intramolecular cyclization of the synthesized polysubstituted thiazoles. Furthermore, the in vitro anticancer activity of these new compounds were tested with MTT assay, and compound 4b exhibited good antitumor activity toward T-24 and A549 cells with IC50 values of 10.3 ± 0.8 and 11.8 ± 0.5 μM, respectively. In addition, the action mechanism of 4b on tumor cells was determined.
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Affiliation(s)
- Wei Tong
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004 , People's Republic of China
| | - Wen-Hao Li
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004 , People's Republic of China
| | - Yan He
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004 , People's Republic of China
| | - Zu-Yu Mo
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004 , People's Republic of China
| | - Hai-Tao Tang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004 , People's Republic of China
| | - Heng-Shan Wang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004 , People's Republic of China
| | - Ying-Ming Pan
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004 , People's Republic of China
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19
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Yu H, Jiao M, Fang X, Xuan P. Synthesis of trifluoromethyl-containing isoindolinones from tertiary enamides via a cascade radical addition and cyclization process. RSC Adv 2018; 8:23919-23923. [PMID: 35540298 PMCID: PMC9081866 DOI: 10.1039/c8ra03696a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 06/15/2018] [Indexed: 01/13/2023] Open
Abstract
A radical trifluoromethylation reaction of tertiary enamides was investigated and trifluoromethyl-containing isoindolinones were prepared under mild conditions. Using TMSCF3 as a radical source, PhI(OAc)2 as an oxidant and KHF2 as an additive, tertiary enamides were converted to isoindolinones via a cascade addition and cyclization process in moderate to good yields. Radical trifluoromethylation and cyclization of tertiary enamides was developed and trifluoromethyl-containing isoindolinones were obtained in moderate to good yields.![]()
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Affiliation(s)
- Hui Yu
- School of Chemical Science and Engineering
- Shanghai Key Lab of Chemical Assessment and Substainability
- Tongji University
- P. R. China
| | - Mingdong Jiao
- School of Chemical Science and Engineering
- Shanghai Key Lab of Chemical Assessment and Substainability
- Tongji University
- P. R. China
| | - Xiaowei Fang
- School of Chemical Science and Engineering
- Shanghai Key Lab of Chemical Assessment and Substainability
- Tongji University
- P. R. China
| | - Pengfei Xuan
- School of Chemical Science and Engineering
- Shanghai Key Lab of Chemical Assessment and Substainability
- Tongji University
- P. R. China
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20
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Ma H, Zhang X, Chen L, Yu W. A Domino Azidation/C–H Amination Approach toward Trifluoromethyl Substituted Imidazoles. J Org Chem 2017; 82:11841-11847. [DOI: 10.1021/acs.joc.7b01361] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Haichao Ma
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Xiaoyan Zhang
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Liangliang Chen
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Wei Yu
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
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21
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Shishlyk OS, Shcherbatiuk AV, Iminov RT, Tverdokhlebov AV, Tolmachev AA, Mykhailiuk PK, Biitseva AV. Synthesis of fluorinated oxazoles by oxidative cyclization of fluorinated enamides. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2016.09.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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22
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Poggiali D, Homberg A, Lathion T, Piguet C, Lacour J. Kinetics of Rh(II)-Catalyzed α-Diazo-β-ketoester Decomposition and Application to the [3+6+3+6] Synthesis of Macrocycles on a Large Scale and at Low Catalyst Loadings. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01283] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniele Poggiali
- Department of Organic Chemistry and ‡Department of Inorganic
and Analytical Chemistry, University of Geneva, 30 Quai Ernest
Ansermet, CH-1211 Geneva 4, Switzerland
| | - Alexandre Homberg
- Department of Organic Chemistry and ‡Department of Inorganic
and Analytical Chemistry, University of Geneva, 30 Quai Ernest
Ansermet, CH-1211 Geneva 4, Switzerland
| | - Timothée Lathion
- Department of Organic Chemistry and ‡Department of Inorganic
and Analytical Chemistry, University of Geneva, 30 Quai Ernest
Ansermet, CH-1211 Geneva 4, Switzerland
| | - Claude Piguet
- Department of Organic Chemistry and ‡Department of Inorganic
and Analytical Chemistry, University of Geneva, 30 Quai Ernest
Ansermet, CH-1211 Geneva 4, Switzerland
| | - Jérôme Lacour
- Department of Organic Chemistry and ‡Department of Inorganic
and Analytical Chemistry, University of Geneva, 30 Quai Ernest
Ansermet, CH-1211 Geneva 4, Switzerland
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23
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Bazhin DN, Kudyakova YS, Nemytova NA, Burgart YV, Saloutin VI. Detrifluoroacetylation of 4,4,4-trifluoro-3,3-dihydroxy-2-(hydroxyimino)butan-1-ones as a convenient synthetic strategy for acyl cyanides. J Fluor Chem 2016. [DOI: 10.1016/j.jfluchem.2016.04.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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24
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Driowya M, Saber A, Marzag H, Demange L, Benhida R, Bougrin K. Microwave-Assisted Synthesis of Bioactive Six-Membered Heterocycles and Their Fused Analogues. Molecules 2016; 21:492. [PMID: 27089315 PMCID: PMC6273482 DOI: 10.3390/molecules21040492] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 03/31/2016] [Accepted: 04/05/2016] [Indexed: 11/16/2022] Open
Abstract
This review describes the formation of six-membered heterocyclic compounds and their fused analogues under microwave activation using modern organic transformations including cyclocondensation, cycloaddition, multicomponents and other modular reactions. The review is divided according to the main heterocycle types in order of increasing complexity, starting with heterocyclic systems containing one, two and three heteroatoms and their fused analogues. Recent microwave applications are reviewed, with special focus on the chemistry of bioactive compounds. Selected examples from the 2006 to 2015 literature are discussed.
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Affiliation(s)
- Mohsine Driowya
- Laboratoire de Chimie des Plantes et de Synthèse Organique et Bioorganique, URAC23, Faculté des Sciences, Université Mohammed V, B.P. 1014 Rabat, Maroc.
| | - Aziza Saber
- Laboratoire de Chimie des Plantes et de Synthèse Organique et Bioorganique, URAC23, Faculté des Sciences, Université Mohammed V, B.P. 1014 Rabat, Maroc.
| | - Hamid Marzag
- Laboratoire de Chimie des Plantes et de Synthèse Organique et Bioorganique, URAC23, Faculté des Sciences, Université Mohammed V, B.P. 1014 Rabat, Maroc.
| | - Luc Demange
- Institut de Chimie de Nice, ICN UMR UNS CNRS 7272, Université Nice-Sophia Antipolis-Université Côte d'Azur, Parc Valrose, 06108 Nice Cedex 2, France.
- Department of Chemistry, Université Paris Descartes, Sorbonne Paris Cité, UFR des Sciences Pharmaceutiques, 4 avenue de l'Observatoire & UFR Biomédicale des Saints Pères, 45 rue des Saints Pères, Paris Fr-75006, France.
| | - Rachid Benhida
- Institut de Chimie de Nice, ICN UMR UNS CNRS 7272, Université Nice-Sophia Antipolis-Université Côte d'Azur, Parc Valrose, 06108 Nice Cedex 2, France.
| | - Khalid Bougrin
- Laboratoire de Chimie des Plantes et de Synthèse Organique et Bioorganique, URAC23, Faculté des Sciences, Université Mohammed V, B.P. 1014 Rabat, Maroc.
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25
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Chou CH, Chen YY, Rajagopal B, Tu HC, Chen KL, Wang SF, Liang CF, Tyan YC, Lin PC. Thermally Induced Denitrogenative Annulation for the Synthesis of Dihydroquinolinimines and Chroman-4-imines. Chem Asian J 2016; 11:757-65. [DOI: 10.1002/asia.201501239] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Indexed: 12/14/2022]
Affiliation(s)
- Chih-Hung Chou
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
| | - Ying-Yu Chen
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
| | - Basker Rajagopal
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
| | - Hsiu-Chung Tu
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
| | - Kuan-Lin Chen
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
| | - Sheng-Fu Wang
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
| | - Chien-Fu Liang
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
| | - Yu-Chang Tyan
- Department of Medical Imaging and Radiological Sciences; Kaohsiung Medical University; 100, Shih-Chuan 1st Rd. Kaohsiung 80708 Taiwan
| | - Po-Chiao Lin
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
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26
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Fershtat LL, Larin AA, Epishina MA, Ovchinnikov IV, Kulikov AS, Ananyev IV, Makhova NN. Design of hybrid heterocyclic systems with a furoxanylpyridine core via tandem hetero-Diels–Alder/retro-Diels–Alder reactions of (1,2,4-triazin-3-yl)furoxans. RSC Adv 2016. [DOI: 10.1039/c6ra05110c] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Synthetic strategy for the synthesis of hybrid heterocyclic systems with the furoxanylpyridine core based on the tandem hetero-Diels–Alder/retro-Diels–Alder reactions of (1,2,4-triazin-3-yl)furoxans with enamine and norbornadiene has been developed.
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Affiliation(s)
- Leonid L. Fershtat
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russian Federation
| | - Alexander A. Larin
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russian Federation
| | - Margarita A. Epishina
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russian Federation
| | - Igor V. Ovchinnikov
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russian Federation
| | - Alexander S. Kulikov
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russian Federation
| | - Ivan V. Ananyev
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Nina N. Makhova
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russian Federation
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27
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Mizuta S, Otaki H, Kitamura K, Nishi K, Watanabe K, Makau JN, Hashimoto R, Usui T, Chiba K. 3,3-Dibromo-2-trifluoromethyl acrylic acid ethyl ester: a versatile platform for the stereoselective preparation of functionalized-α-trifluoromethyl α,β-unsaturated lactones and trifluoromethyl pyrazolinones. Org Chem Front 2016. [DOI: 10.1039/c6qo00360e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthetic routes to multi-functionalized-α-trifluoromethyl α,β-unsaturated lactones and trifluoromethyl pyrazolinones.
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Affiliation(s)
- Satoshi Mizuta
- Graduate School of Biomedical Sciences
- Nagasaki University
- Nagasaki
- Japan
| | - Hiroki Otaki
- Graduate School of Biomedical Sciences
- Nagasaki University
- Nagasaki
- Japan
| | - Kanami Kitamura
- Graduate School of Biomedical Sciences
- Nagasaki University
- Nagasaki
- Japan
| | - Kodai Nishi
- Department of Radioisotope Medicine
- Atomic Bomb Disease institute
- Nagasaki University
- Nagasaki
- Japan
| | - Ken Watanabe
- Graduate School of Biomedical Sciences
- Nagasaki University
- Nagasaki
- Japan
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28
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Strekowski L, Zhang J, Sączewski J, Wolińska E. Synthesis of quinolines and acridines by the reaction of 2-(perfluoroalkyl)anilines with lithium and Grignard reagents. HETEROCYCL COMMUN 2015. [DOI: 10.1515/hc-2015-0074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractThis review summarizes the synthesis of quinolines and acridines by the reactions of anionically activated 2-(perfluoroalkyl)anilines. Mechanistic studies including isolation of the intermediate aza-ortho-xylylene are discussed.
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Affiliation(s)
- Lucjan Strekowski
- 1Department of Chemistry, Georgia State University, Atlanta, GA 30302, USA
| | - Jianguo Zhang
- 2Department of Biochemistry and Molecular Biology, The University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA
| | - Jarosław Sączewski
- 3Department of Chemical Technology of Drugs, Medical University of Gdańsk, 80-416 Gdańsk, Poland
| | - Ewa Wolińska
- 4Department of Organic Chemistry, University of Podlasie, 08-110 Siedlce, Poland
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29
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Krishnan KK, Thankachan AP, Anilkumar G. Recent advances and perspectives in the synthesis of heterocycles via carbenes. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.061] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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30
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Kondratov IS, Tolmachova NA, Dolovanyuk VG, Gerus II, Daniliuc CG, Haufe G. Synthesis of Trifluoromethyl-Containing Polysubstituted Aromatic Compounds by Diels-Alder Reaction of Ethyl 3-Benzamido-2-oxo-6-(trifluoromethyl)-2H-pyran-5-carboxylate. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500032] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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31
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Bazhin DN, Chizhov DL, Röschenthaler GV, Kudyakova YS, Burgart YV, Slepukhin PA, Saloutin VI, Charushin VN. A concise approach to CF3-containing furan-3-ones, (bis)pyrazoles from novel fluorinated building blocks based on 2,3-butanedione. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.08.046] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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32
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Bunev AS, Vasiliev MA, Statsyuk VE, Ostapenko GI, Peregudov AS. Synthesis of 1-aryl-4-tosyl-5-(trifluoromethyl)-1H-imidazoles. J Fluor Chem 2014. [DOI: 10.1016/j.jfluchem.2014.04.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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33
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Kawase M, Hagimoto Y, Saijo R. Dakin-West Reaction of N-Thioacylprolines Using Trifluoroacetic Anhydride: Novel Access to 5-Trifluoromethylthiazoles. HETEROCYCLES 2014. [DOI: 10.3987/com-13-12904] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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34
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35
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Rostovskii NV, Novikov MS, Khlebnikov AF, Khlebnikov VA, Korneev SM. Rh(II)-carbenoid mediated 2H-azirine ring-expansion as a convenient route to non-fused photo- and thermochromic 2H-1,4-oxazines. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.03.106] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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36
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Xu X, Zavalij PY, Hu W, Doyle MP. Vinylogous reactivity of enol diazoacetates with donor-acceptor substituted hydrazones. Synthesis of substituted pyrazole derivatives. J Org Chem 2013; 78:1583-8. [PMID: 23301562 DOI: 10.1021/jo302696y] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A regiospecific synthesis of multifunctional pyrazoleshas been developed from a cascade process triggered by Rh(II)-catalyzed dinitrogen extrusion from enol diazoacetates with vinylogous nucleophilic addition followed by Lewis acid catalyzed cyclization and aromatization.
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Affiliation(s)
- Xinfang Xu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
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37
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Kawase M, Saijo R, Kurihara KI. 4-Trifluoroacetyl-2-phenyloxazol-5-one: Versatile Template for Synthesis of Trifluoromethyl-Substituted Heterocycles. HETEROCYCLES 2013. [DOI: 10.3987/com-13-12838] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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38
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39
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Xu X, Zavalij PY, Hu W, Doyle MP. Efficient synthesis of oxazoles by dirhodium(II)-catalyzed reactions of styryl diazoacetate with oximes. Chem Commun (Camb) 2012; 48:11522-4. [PMID: 23093131 PMCID: PMC3829718 DOI: 10.1039/c2cc36537e] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient one-step synthesis of multi-functionalized oxazole derivatives is achieved in high yield by dirhodium(II)-catalyzed reactions of styryl diazoacetate with aryl oximes.
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Affiliation(s)
- Xinfang Xu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, 20742, USA
- Shanghai Engineering Research Center for Molecular Therapeutics and Institute of Drug Discovery and Development, East China Normal University, 3663 Zhongshan Bei Road, Shanghai 200062 (China)
| | - Peter Y. Zavalij
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, 20742, USA
| | - Wenhao Hu
- Shanghai Engineering Research Center for Molecular Therapeutics and Institute of Drug Discovery and Development, East China Normal University, 3663 Zhongshan Bei Road, Shanghai 200062 (China)
| | - Michael P. Doyle
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, 20742, USA
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40
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Yamazaki S, Maenaka Y, Fujinami K, Mikata Y. Triphenylphosphine-mediated reaction of dialkyl azodicarboxylate with activated alkenes leading to pyrazolines. RSC Adv 2012. [DOI: 10.1039/c2ra21249h] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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