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He Y, He TJ, Cheng X, Wei Y, Wang H, Lin YW. Phosphine-catalyzed dearomative [3+2] cycloaddition of 4-nitroisoxazoles with allenoates or Morita-Baylis-Hillman carbonates. Chem Commun (Camb) 2024; 60:6961-6964. [PMID: 38887994 DOI: 10.1039/d4cc02231a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
An efficient phosphine-catalyzed dearomative [3+2] annulation of 4-nitroisoxazoles with allenoates or Morita-Baylis-Hillman carbonates has been established for the convenient synthesis of bicyclic isoxazoline derivatives. This reaction approach showed a broad substrate scope, high functional group compatibility, and excellent regioselectivity and diastereoselectivity. Furthermore, the success at the gram-scale and synthetic applications of the obtained compound 3a demonstrate the great potential of this methodology for practical applications in organic synthesis.
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Affiliation(s)
- Yongjun He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, P. R. China.
| | - Tian-Juan He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, P. R. China.
| | - Xiufang Cheng
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, P. R. China.
| | - Yibo Wei
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, P. R. China.
| | - Huamin Wang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, P. R. China.
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, P. R. China.
- Laboratory of Protein Structure and Function, University of South China Medical School, Hengyang, P. R. China
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2
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Hajinasiri R. Allenoates in organic synthesis. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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3
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Zhang S, Xie Z, Ye Z, Zhang M, Li D, Yamaguchi M, Bao M. Synthesis of trans-stilbenes via phosphine-catalyzed coupling reactions of benzylic halides. Org Biomol Chem 2022; 20:6869-6878. [PMID: 35972316 DOI: 10.1039/d2ob01237e] [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
An efficient and practical phosphine-catalyzed homo-coupling reaction of benzyl chlorides is described. The reactions proceed smoothly in the presence of CsF/B(OMe)3 and NaH as the base, respectively, to provide trans-stilbenes in good yields with a broad scope. Unsymmetrical stilbenes are also generated from the reactions of benzyl chlorides with phosphonium salts. Several P-based key intermediates have been detected by NMR and HRMS analyses, which shed light on the postulated catalytic cycle. In the presence of different bases, the transformations involve two different pathways, in which phenylcarbene and phosphonium alkoxide are considered as key intermediates, respectively. The two pathways are complementary in synthesis but different in mechanisms. The synthetic utility, including gram-scale reactions and straightforward access to π-conjugated molecules, has been demonstrated as well.
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Affiliation(s)
- Sheng Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
| | - Zhilong Xie
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
| | - Zhanqiang Ye
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
| | - Mingyang Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
| | - Dongdeng Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
| | - Masahiko Yamaguchi
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
| | - Ming Bao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
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4
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Ryckaert B, Hullaert J, Van Hecke K, Winne JM. Dearomative (3 + 2) Cycloadditions of Unprotected Indoles. Org Lett 2022; 24:4119-4123. [PMID: 35674713 DOI: 10.1021/acs.orglett.2c01214] [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
The (3 + 2) cycloaddition of various indoles with a dithioallyl cation affords dearomatized cyclopentannulated adducts, with complete control of regioselectivity and excellent chemo- and diastereoselectivity. The success of the reaction critically relies on the use of an excess of very strong Brønsted acid, which paradoxically prevents carbocationic side reactions. The reaction tolerates sensitive functionalities such as basic amines or free hydroxyls, and we demonstrate its use in late stage derivatization of highly functionalized, unprotected indoles.
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Affiliation(s)
- Bram Ryckaert
- Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, B-9000 Ghent, Belgium
| | - Jan Hullaert
- Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, B-9000 Ghent, Belgium
| | - Kristof Van Hecke
- Department of Chemistry, Ghent University, Krijgslaan 281-S3, B-9000 Ghent, Belgium
| | - Johan M Winne
- Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, B-9000 Ghent, Belgium
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5
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Affiliation(s)
- Ning Wang
- Sichuan University West China Hospital Department of laboratory medicine CHINA
| | - Jing Ren
- Sichuan University West China Hospital Department of Radiology CHINA
| | - Kaizhi Li
- Sichuan University West China Hospital Department of laboratory medicine Biophamaceutical Research Institute, West China Hospital, Sichuan University, Ch 610041 Chengdu CHINA
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6
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Rkein B, Bigot A, Birbaum L, Manneveau M, De Paolis M, Legros J, Chataigner I. Reactivity of 3-nitroindoles with electron-rich species. Chem Commun (Camb) 2021; 57:27-44. [PMID: 33300929 DOI: 10.1039/d0cc06658c] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The indol(in)e building block is one of the "privileged-structures" for the pharmaceutical industry since this fragment plays a central role in drug discovery. While the electron-rich character of the indole motif has been investigated for decades, exploiting the electrophilic reactivity of 3-nitroindole derivatives has recently been put at the heart of a wide range of new, albeit challenging, chemical reactions. In particular, dearomatization processes have considerably enriched the scope of C2[double bond, length as m-dash]C3 functionalizations of these scaffolds. This feature article showcases this remarkable electrophilic reactivity of 3-nitroindoles with electron-rich species and highlights their value in generating diversely substituted indol(in)es. This compilation underlines how these heteroaromatic templates have gradually become model substrates for electron-poor aromatic compounds in dearomatization strategies.
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Affiliation(s)
- Batoul Rkein
- Normandie Université, INSA Rouen, UNIROUEN, CNRS, COBRA Laboratory, F-76000 Rouen, France.
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7
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Xie C, Smaligo AJ, Song XR, Kwon O. Phosphorus-Based Catalysis. ACS CENTRAL SCIENCE 2021; 7:536-558. [PMID: 34056085 PMCID: PMC8155461 DOI: 10.1021/acscentsci.0c01493] [Citation(s) in RCA: 116] [Impact Index Per Article: 38.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Indexed: 05/08/2023]
Abstract
Phosphorus-based organocatalysis encompasses several subfields that have undergone rapid growth in recent years. This Outlook gives an overview of its various aspects. In particular, we highlight key advances in three topics: nucleophilic phosphine catalysis, organophosphorus catalysis to bypass phosphine oxide waste, and organophosphorus compound-mediated single electron transfer processes. We briefly summarize five additional topics: chiral phosphoric acid catalysis, phosphine oxide Lewis base catalysis, iminophosphorane super base catalysis, phosphonium salt phase transfer catalysis, and frustrated Lewis pair catalysis. Although it is not catalytic in nature, we also discuss novel discoveries that are emerging in phosphorus(V) ligand coupling. We conclude with some ideas about the future of organophosphorus catalysis.
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Affiliation(s)
- Changmin Xie
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1569, United States
| | - Andrew J. Smaligo
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1569, United States
| | | | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1569, United States
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8
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Affiliation(s)
- José M. Alonso
- Departamento de Química Orgánica Universidad Complutense de Madrid Avda. Complutense s/n 28040 Madrid Spain
| | - María Paz Muñoz
- School of Chemistry University of East Anglia Earlham Road 4 7TJ Norwich, NR UK
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9
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Cerveri A, Bandini M. Recent Advances in the Catalytic Functionalization of “Electrophilic” Indoles. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.201900446] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Alessandro Cerveri
- Dipartimento di Chimica “Giacomo Ciamician” – Alma Mater Studiorum Università di Bologna Via Selmi 2 40126 Bologna Italy
| | - Marco Bandini
- Dipartimento di Chimica “Giacomo Ciamician” – Alma Mater Studiorum Università di Bologna Via Selmi 2 40126 Bologna Italy
- Consorzio C.I.N.M.P.I.S. Via Selmi 2 40126 Bologna Italy
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10
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Ling J, Mara D, Roure B, Laugeois M, Vitale MR. Copper(I)-Catalyzed Dearomative (3 + 2) Cycloaddition of 3-Nitroindoles with Propargylic Nucleophiles: An Access to Cyclopenta[b]indolines. J Org Chem 2020; 85:3838-3848. [DOI: 10.1021/acs.joc.9b03459] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Johanne Ling
- Institute of Chemistry for Life and Health Sciences, PSL Université Paris, CNRS, Chimie ParisTech., 11 rue Pierre et Marie Curie, 75005 Paris, France
| | - David Mara
- Institute of Chemistry for Life and Health Sciences, PSL Université Paris, CNRS, Chimie ParisTech., 11 rue Pierre et Marie Curie, 75005 Paris, France
| | - Baptiste Roure
- Institute of Chemistry for Life and Health Sciences, PSL Université Paris, CNRS, Chimie ParisTech., 11 rue Pierre et Marie Curie, 75005 Paris, France
| | - Maxime Laugeois
- Institute of Chemistry for Life and Health Sciences, PSL Université Paris, CNRS, Chimie ParisTech., 11 rue Pierre et Marie Curie, 75005 Paris, France
| | - Maxime R. Vitale
- Institute of Chemistry for Life and Health Sciences, PSL Université Paris, CNRS, Chimie ParisTech., 11 rue Pierre et Marie Curie, 75005 Paris, France
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11
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Abstract
The 1,3-dipolar cycloaddition reaction is a powerful and versatile strategy for
the synthesis of carbocyclic and heterocyclic five-membered rings. Herein, the most recent
developments on the [3+2] cycloaddition reactions using allenes acting either as dipolarophiles
or 1,3-dipole precursors, are highlighted. The recent contributions on the
phosphine- and transition metal-catalyzed [3+2] annulations involving allenes as substrates
are also covered, with the exception of those in which the formation of a 1,3-dipole
(or synthetic equivalent) is not invoked.
This review summarizes the most relevant research in which allenes are used as building
blocks for the construction of structurally diverse five-membered rings via [3+2] annulation
reactions.
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Affiliation(s)
- Ana L. Cardoso
- CQC and Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Maria I.L. Soares
- CQC and Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
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12
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Birbaum L, Gillard L, Gérard H, Oulyadi H, Vincent G, Moreau X, De Paolis M, Chataigner I. Dearomatization of 3‐Nitroindoles with Highly γ‐Functionalized Allenoates in Formal (3+2) Cycloadditions. Chemistry 2019; 25:13688-13693. [DOI: 10.1002/chem.201903455] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/03/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Léo Birbaum
- UNIROUENINSA RouenCNRSCOBRANormandie Univ 76000 Rouen France
| | - Laurent Gillard
- UNIROUENINSA RouenCNRSCOBRANormandie Univ 76000 Rouen France
| | - Hélène Gérard
- CNRSLaboratoire de Chimie ThéoriqueLCT UMR7616Sorbonne Université 75005 Paris France
| | - Hassan Oulyadi
- UNIROUENINSA RouenCNRSCOBRANormandie Univ 76000 Rouen France
| | - Guillaume Vincent
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO)Univ. Paris-Sud, Université Paris-Saclay, CNRS UMR 8182 91405 Orsay cedex France
| | - Xavier Moreau
- Institut Lavoisier VersaillesUMR CNRS 8180Université de Versailles-St-Quentin-en-Yvelines, Université Paris Saclay 78035 Versailles cedex France
| | | | - Isabelle Chataigner
- UNIROUENINSA RouenCNRSCOBRANormandie Univ 76000 Rouen France
- CNRSLaboratoire de Chimie ThéoriqueLCT UMR7616Sorbonne Université 75005 Paris France
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