1
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Miller BA, Narangoda CJ, Kwain S, Bridges WT, Noori M, Solomon EE, Bragg AA, Sung AT, Iwai Y, Ulisse L, Schmidt WH, McMillen CD, Dominy BN, Whitehead DC. Cycloaddition of Phenyltriazolinedione with Carbazole-Alkynes and Yne-Carbamates to Access Diazacyclobutenes. J Org Chem 2024; 89:4990-4999. [PMID: 38494854 DOI: 10.1021/acs.joc.4c00213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Previously, we described the synthesis of stable, bicyclic examples of the rather rare diazacyclobutene (DCB) motif by means of a cycloaddition between triazolinediones and electron-rich thiolated alkynes. Here, we report the investigation of the cycloaddition of triazolinediones with related electron-rich yne-carbamates and carbazole-alkynes. Bicyclic DCBs arising from yne-carbamates were isolated in 8-65% yield, while those arising from carbazole-alkynes were isolated in 28-59% yield. Mechanistic studies and characterization of isolable byproducts shed light on the underlying issues leading to poor to moderate yields.
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Affiliation(s)
- Brock A Miller
- Department of Chemistry, Clemson University, Clemson, South Carolina 29631, United States
- Department of Chemistry, High Point University, High Point, North Carolina 27268, United States
| | - Chandima J Narangoda
- Department of Chemistry, Faculty of Applied Sciences, University of Sri Jayewardenepura, Gangodawila, Nugegodo 10250, Sri Lanka
| | - Samuel Kwain
- Department of Chemistry, Clemson University, Clemson, South Carolina 29631, United States
| | - William T Bridges
- Department of Chemistry, Clemson University, Clemson, South Carolina 29631, United States
| | - Monireh Noori
- Department of Chemistry, Clemson University, Clemson, South Carolina 29631, United States
| | - Erin E Solomon
- Department of Chemistry, Clemson University, Clemson, South Carolina 29631, United States
| | - Alexis A Bragg
- Department of Chemistry, Clemson University, Clemson, South Carolina 29631, United States
| | - Alex T Sung
- Department of Chemistry, Clemson University, Clemson, South Carolina 29631, United States
| | - Yusuke Iwai
- Creative Engineering Program, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan
| | - Lauren Ulisse
- Department of Chemistry, Clemson University, Clemson, South Carolina 29631, United States
| | - William H Schmidt
- Department of Chemistry, Clemson University, Clemson, South Carolina 29631, United States
| | - Colin D McMillen
- Department of Chemistry, Clemson University, Clemson, South Carolina 29631, United States
| | - Brian N Dominy
- Department of Chemistry, Clemson University, Clemson, South Carolina 29631, United States
| | - Daniel C Whitehead
- Department of Chemistry, Clemson University, Clemson, South Carolina 29631, United States
- Eukaryotic Pathogens Innovation Center, Clemson University, Clemson, South Carolina 29634, United States
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2
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Goulart TAC, Back DF, Moura E Silva S, Zeni G. Palladium-Catalyzed Cascade 5- endo-dig Cyclization of Ynamides to Form 4-Alkynyloxazolones. J Org Chem 2022; 87:3341-3351. [PMID: 35167299 DOI: 10.1021/acs.joc.1c02978] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The selective synthesis of 4-alkynyloxazolones and their further applications as substrates to electrophile-promoted nucleophilic cyclization have been developed. The reaction of ynamides with terminal alkynes proceeded smoothly to give 4-alkynyloxazolones in the presence of a catalytic amount of palladium(II) acetate. The products were obtained with the sequential formation of new C-C and C-O bonds via a cascade procedure. The first step involved a carbon-oxygen bond formation, via a 5-endo-dig closure, which was confirmed by X-ray analyses of the crystalline sample. Subsequently, the reaction of 4-alkynyloxazolones with an electrophilic selenium source gave 3-phenylselanyl benzofuran derivatives via an electrophile-promoted nucleophilic cyclization.
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Affiliation(s)
- Tales A C Goulart
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE, UFSM, Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Davi Fernando Back
- Laboratório de Materiais Inorgânicos, Departamento de Química, UFSM, Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Sidnei Moura E Silva
- Laboratório de Biotecnologia de Produtos Naturais e Sintéticos, Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
| | - Gilson Zeni
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE, UFSM, Santa Maria, Rio Grande do Sul 97105-900, Brazil
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3
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Li B, Yuan J, Ye X, Zhang R, Li J, Wang Y, Hu J, Dong D. PIFA-Mediated Tandem Hofmann-Type Rearrangement and Cyclization Reaction of α-Acyl-β-aminoacrylamides: Access to Polysubstituted Oxazol-2(3 H)-ones. J Org Chem 2021; 86:17944-17954. [PMID: 34872249 DOI: 10.1021/acs.joc.1c02276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient and straightforward synthesis of polysubstituted oxazol-2(3H)-ones has been developed via a tandem Hofmann-type rearrangement and cyclization reaction of various α-acyl-β-aminoacrylamides mediated by phenyl iodine(III) bis(trifluoroacetate) (PIFA) in the presence of trifloroacetic acid (TFA). This novel protocol features readily available starting materials, mild reaction conditions, simple execution, high chemoselectivity, good functional group tolerance, and a metal-free oxidation process.
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Affiliation(s)
- Baibin Li
- CAS Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.,University of Science and Technology of China, Hefei 230026, P. R. China
| | - Jingwen Yuan
- CAS Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Xuebei Ye
- CAS Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.,University of Science and Technology of China, Hefei 230026, P. R. China
| | - Rui Zhang
- CAS Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Jiacheng Li
- CAS Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.,University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yu Wang
- CAS Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.,University of Science and Technology of China, Hefei 230026, P. R. China
| | - Jiana Hu
- CAS Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.,University of Science and Technology of China, Hefei 230026, P. R. China
| | - Dewen Dong
- CAS Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.,University of Science and Technology of China, Hefei 230026, P. R. China
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4
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Chiral bis(pyrazolyl)methane copper(I) complexes and their application in nitrene transfer reactions. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2021. [DOI: 10.1515/znb-2021-0140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this study, chiral bis(pyrazolyl)methane copper(I) acetonitrile complexes were applied to generate two novel terminal copper tosyl nitrene complexes with the nitrene generating agent SPhINTs in dichloromethane at low temperatures. The syntheses of the chiral bis(pyrazolyl)methane ligands are based on pulegone and camphor, members of the natural chiral pool. The chiral copper(I) acetonitrile complexes were applied as catalysts in the copper nitrene mediated aziridination reaction of different styrene derivatives and the C–H amination of various substrates. The reactions afforded good yields, but low enantiomeric excess under mild conditions. The nitrene species have been characterized with UV/Vis and EPR spectroscopy and the products of the decay by ESI mass spectrometry.
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5
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Recent Advances in the Synthesis and Ring‐Opening Transformations of 2‐Oxazolidinones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100746] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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6
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Habert L, Diachenko I, Retailleau P, Gillaizeau I. Electrophile promoted cyclization of ortho-aryl substituted ynamides: construction of 3-amino-4-halo- or 4 seleno-isocoumarin derivatives. Org Biomol Chem 2021; 19:6623-6627. [PMID: 34282818 DOI: 10.1039/d1ob01075a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Isocoumarins are important building blocks in medicinal chemistry. They are widespread in the core structure of biologically active compounds. Here we report the development of an efficient and highly reactive electrophilic cyclization of ortho-ynamidyl benzoate esters providing access to 3-amino-4-halo- or 4-seleno-isocoumarins in a short time (<1 min) with good yields.
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Affiliation(s)
- Loïc Habert
- Institute of Organic and Analytical Chemistry, ICOA UMR 7311 CNRS, Université d'Orléans, Pôle de chimie, Rue de Chartres, 45100 Orléans, France.
| | - Iryna Diachenko
- Institute of Organic and Analytical Chemistry, ICOA UMR 7311 CNRS, Université d'Orléans, Pôle de chimie, Rue de Chartres, 45100 Orléans, France.
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, UPR 2301, CNRS, Gif-sur-Yvette, France
| | - Isabelle Gillaizeau
- Institute of Organic and Analytical Chemistry, ICOA UMR 7311 CNRS, Université d'Orléans, Pôle de chimie, Rue de Chartres, 45100 Orléans, France.
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7
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Thomas F, Oster M, Schön F, Göbgen KC, Amarouch B, Steden D, Hoffmann A, Herres-Pawlis S. A new generation of terminal copper nitrenes and their application in aromatic C-H amination reactions. Dalton Trans 2021; 50:6444-6462. [PMID: 33908532 DOI: 10.1039/d1dt00832c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copper nitrene complexes are highly reactive species and are known as intermediates in the copper catalyzed C-H amination. In this study, three novel copper tosyl nitrene complexes were synthesized at low temperatures, stabilized with heteroscorpionate ligands of the bis(pyrazolyl)methane family. The copper nitrenes were obtained by the reaction of a copper(i) acetonitrile complex with SPhINTs in dichloromethane. We show that the ligand design has a major influence on the catalytic activity and the thermal stability of the copper nitrene complex. Not only the choice of the third N donor, but also the substituent in the 5-position of the pyrazolyl moiety, have an impact on the stability. Furthermore, the novel copper nitrene complexes were used for catalytic aziridination of styrenes and C-H amination reactions of aromatic and aliphatic substrates under mild reaction conditions. Even challenging substrates like benzene and cyclohexane were aminated with good yields. The copper nitrene complexes were characterized using UV/Vis spectroscopy, low temperature Evans NMR spectroscopy, density functional theory, domain-based local pair natural orbital coupled cluster calculations (DLPNO-CCSD(T)) and cryo-UHR mass spectrometry.
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Affiliation(s)
- Fabian Thomas
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, 52074 Aachen, Germany.
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8
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Goulart TAC, Back DF, Moura E Silva S, Zeni G. Diorganyl Diselenides and Iron(III) Chloride Drive the Regio- and Stereoselectivity in the Selenation of Ynamides. J Org Chem 2021; 86:980-994. [PMID: 33259208 DOI: 10.1021/acs.joc.0c02480] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report here our results on the application of ynamides as substrates in the reactions with diorganyl dichalcogenides and iron(III) chloride to give selectively three different types of compounds: E-α-chloro-β-(organoselenyl)enamides, 4-(organochalcogenyl)oxazolones, and vinyl tosylates. The results reveal that the selectivity in the formation of products was obtained by controlling the functional groups directly bonded to the nitrogen atom of the ynamides. Thus, α-chloro-β-(organoselenyl) enamide derivatives were exclusively obtained when the TsN- and MsN-ynamides were treated with a mixture of diorganyl diselenides (1.0 equiv) and FeCl3 (3.0 equiv) in dichloroethane (DCE, 3 mL), at room temperature. The 4-(organochalcogenyl)oxazolones were selectively obtained with ynamides having an ester group, directly bonded to the nitrogen atom, upon treatment with a solution of FeCl3 (1.5 equiv) and diorganyl dichalcogenides (1.0 equiv) in dichloromethane (3 mL) at room temperature. Finally, vinyl tosylates were obtained from ynamides having an ester group, directly bonded to the nitrogen atom, by reaction with p-toluenesulfonic acid. We also studied the application of the prepared compounds as substrates for Suzuki and Sonogashira cross-coupling reactions.
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9
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Er(OTf)3-catalyzed approach to 3-alkenylindoles through regioselective addition of ynamides and indoles. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131649] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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10
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Habert L, Diachenko I, Gillaizeau I. Rapid synthesis of 3-amino-1 H-isochromene from ortho-ynamidyl het(aryl) aldehyde derivatives. RSC Adv 2020; 10:9934-9939. [PMID: 35498568 PMCID: PMC9050208 DOI: 10.1039/d0ra00768d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 03/02/2020] [Indexed: 01/18/2023] Open
Abstract
A simple and original efficient synthesis of 3-amino-1H-isochromene bearing a bromine atom at the C-1 position via a 6-endo-cyclization approach from in situ generated ortho-ynamidyl het(aryl) aldehyde derivatives is achieved under mild reaction conditions and with good yields. Original ortho-ynamidyl benzaldehyde compounds were also successfully obtained. Fast synthesis of 3-amino-1H-isochromene from in situ generated ortho-ynamidyl het(aryl) aldehyde derivatives.![]()
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Affiliation(s)
- Loïc Habert
- Institute of Organic and Analytical Chemistry
- ICOA
- UMR 7311
- CNRS
- Université d'Orléans, rue de Chartres
| | - Iryna Diachenko
- Institute of Organic and Analytical Chemistry
- ICOA
- UMR 7311
- CNRS
- Université d'Orléans, rue de Chartres
| | - Isabelle Gillaizeau
- Institute of Organic and Analytical Chemistry
- ICOA
- UMR 7311
- CNRS
- Université d'Orléans, rue de Chartres
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11
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Habert L, Sallio R, Durandetti M, Gosmini C, Gillaizeau I. Zinc Chloride Mediated Synthesis of
3H
‐Oxazol‐2‐one and Pyrrolo‐oxazin‐1‐one from Ynamide. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900428] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Loïc Habert
- Institute of Organic and Analytical Chemistry ICOA UMR 7311 CNRS Université d'Orléans rue de Chartres 45100 Orléans France
| | - Romain Sallio
- Institute of Organic and Analytical Chemistry ICOA UMR 7311 CNRS Université d'Orléans rue de Chartres 45100 Orléans France
| | - Muriel Durandetti
- Normandie Univ, UNIROUEN NSA Rouen, CNRS, COBRA (UMR 6014& FR 3038) 76000 Rouen France
| | - Corinne Gosmini
- Laboratoire de Chimie Moléculaire CNRS, Ecole polytechnique, IPParis 91128 Palaiseau France
| | - Isabelle Gillaizeau
- Institute of Organic and Analytical Chemistry ICOA UMR 7311 CNRS Université d'Orléans rue de Chartres 45100 Orléans France
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12
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Ieawsuwan W, Ruchirawat S. An Efficient Silver Tetrafluoroborate-Catalyzed Cycloisomerization of Ynamides. HETEROCYCLES 2019. [DOI: 10.3987/com-18-s(f)21] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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He G, Li Y, Yu Z, Chen Z, Tang Y, Song G, Loh TP. Selectfluor™-catalyzed oxidative cyclization of ynamides enables facile synthesis of oxazolidine-2,4-diones. Org Chem Front 2019. [DOI: 10.1039/c9qo00845d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Selectfluor™-catalyzed oxidative cyclization of ynamides employing DMSO as the solvent and oxidant was achieved, affording oxazolidine-2,4-diones in moderate to excellent yields with high chemo-selectivity. The method offers an attractive alternative to existing protocols.
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Affiliation(s)
- Guangke He
- School of Chemistry and Molecular Engineering
- Institute of Advanced Synthesis
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Yuan Li
- School of Chemistry and Molecular Engineering
- Institute of Advanced Synthesis
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Zilun Yu
- School of Chemistry and Molecular Engineering
- Institute of Advanced Synthesis
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Zhaoqiang Chen
- School of Chemistry and Molecular Engineering
- Institute of Advanced Synthesis
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Yongming Tang
- School of Chemistry and Molecular Engineering
- Institute of Advanced Synthesis
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Guangliang Song
- School of Chemistry and Molecular Engineering
- Institute of Advanced Synthesis
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Teck-Peng Loh
- School of Chemistry and Molecular Engineering
- Institute of Advanced Synthesis
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
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15
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Habert L, Retailleau P, Gillaizeau I. Rapid synthesis of 3-amino isocoumarin derivatives from ynamides. Org Biomol Chem 2018; 16:7351-7355. [DOI: 10.1039/c8ob02305k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A novel and efficient fast synthesis of 3-amino isocoumarins in good to excellent yields is reported.
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Affiliation(s)
- Loïc Habert
- Institute of Organic and Analytical Chemistry
- ICOA UMR 7311 CNRS
- Université d'Orléans
- Pôle de chimie
- 45100 Orléans
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles
- CNRS
- 91198 Gif-sur-Yvette Cedex
- France
| | - Isabelle Gillaizeau
- Institute of Organic and Analytical Chemistry
- ICOA UMR 7311 CNRS
- Université d'Orléans
- Pôle de chimie
- 45100 Orléans
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