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Deng R, Han TJ, Gao X, Yang YF, Mei GJ. Further developments of β,γ-unsaturated α-ketoesters as versatile synthons in asymmetric catalysis. iScience 2022; 25:103913. [PMID: 35243262 PMCID: PMC8881726 DOI: 10.1016/j.isci.2022.103913] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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2
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Vinylogous and Arylogous Stereoselective Base-Promoted Phase-Transfer Catalysis. Catalysts 2021. [DOI: 10.3390/catal11121545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Vinylogous enolate and enolate-type carbanions, generated by deprotonation of α,β-unsaturated compounds and characterized by delocalization of the negative charge over two or more carbon atoms, are extensively used in organic synthesis, enabling functionalization and C–C bond formation at remote positions. Similarly, reactions with electrophiles at benzylic and heterobenzylic position are performed through generation of arylogous and heteroarylogous enolate-type nucleophiles. Although widely exploited in metal-catalysis and organocatalysis, it is only in recent years that the vinylogy and arylogy principles have been translated fruitfully in phase-transfer catalyzed processes. This review provides an overview of the methods developed to date, involving vinylogous and (hetero)arylogous carbon nucleophiles under phase-transfer catalytic conditions, highlighting main mechanistic aspects.
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3
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Liu XS, Li Y, Li X. Bi(OAc) 3/Chiral Phosphoric Acid-Catalyzed Enantioselective 1,2- and Formal 1,4-Allylation Reaction of β,γ-Unsaturated α-Ketoesters. Org Lett 2021; 23:9128-9133. [PMID: 34779206 DOI: 10.1021/acs.orglett.1c03453] [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 highly efficient asymmetric 1,2-allylation reaction of β,γ-unsaturated α-ketoesters was realized by using a Bi(OAc)3/chiral phosphoric acid catalyst system under mild conditions. Meanwhile, using this combined strategy of enantioselective 1,2-allylation and subsequent anionic oxy-Cope rearrangement, the asymmetric formal 1,4-allylation reaction was achieved by a one-pot process. These reactions offer rapid access to an array of homoallylic tertiary alcohols and γ-allyl-α-ketoesters with good yields and excellent enantioselectivities. Density functional theory calculations were conducted to interpret the high enantioselectivity.
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Affiliation(s)
- Xiang-Shuai Liu
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yao Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xin Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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Oiarbide M, Palomo C. Extended Enolates: Versatile Intermediates for Asymmetric C-H Functionalization via Noncovalent Catalysis. Chemistry 2021; 27:10226-10246. [PMID: 33961323 PMCID: PMC8361983 DOI: 10.1002/chem.202100756] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Indexed: 12/22/2022]
Abstract
Catalyst-controlled functionalization of unmodified carbonyl compounds is a relevant operation in organic synthesis, especially when high levels of site- and stereoselectivity can be attained. This objective is now within reach for some subsets of enolizable substrates using various types of activation mechanisms. Recent contributions to this area include enantioselective transformations that proceed via transiently generated noncovalent di(tri)enolate-catalyst coordination species. While relatively easier to form than simple enolate congeners, di(tri)enolates are ambifunctional in nature and so control of the reaction regioselectivity becomes an issue. This Minireview discusses in some detail this and other problems, and how noncovalent activation approaches based on metallic and metal free catalysts have been developed to advance the field.
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Affiliation(s)
- Mikel Oiarbide
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHUManuel Lardizabal 320018San SebastiánSpain
| | - Claudio Palomo
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHUManuel Lardizabal 320018San SebastiánSpain
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Tsou YJ, Guan RY, Han JL. Enantioselective organocatalytic vinylogous aldol-cyclization cascade reaction of 3-alkylidene oxindoles with o-quinones. Org Biomol Chem 2021; 19:5836-5843. [PMID: 34115083 DOI: 10.1039/d1ob00888a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Spirocyclic o-quinone analogues show a broad spectrum of applications as biologically active compounds. We herein report the chiral bifunctional squaramide catalysed asymmetric vinylogous aldol-cyclization cascade reaction between 3-alkylidene oxindoles and o-quinones. A wide range of enantioenriched spirocyclic o-quinone analogues with a quaternary stereocenter could be smoothly synthesized in good to excellent yields (up to 99%) with high enantioselectivities (up to 99%).
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Affiliation(s)
- Yun-Jie Tsou
- Department of Chemistry, National Chung Hsing University, Taichung City, 40227, Taiwan, Republic of China.
| | - Ren-You Guan
- Department of Chemistry, National Chung Hsing University, Taichung City, 40227, Taiwan, Republic of China.
| | - Jeng-Liang Han
- Department of Chemistry, National Chung Hsing University, Taichung City, 40227, Taiwan, Republic of China.
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6
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Cao D, Chen G, Chen D, Xia Z, Li Z, Wang Y, Xu D, Yang J. Synthesis of 4-Hydroxycarbazole Derivatives by Benzannulation of 3-Nitroindoles with Alkylidene Azlactones. ACS OMEGA 2021; 6:16969-16979. [PMID: 34250355 PMCID: PMC8264937 DOI: 10.1021/acsomega.1c01992] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/14/2021] [Indexed: 05/05/2023]
Abstract
A general synthesis of 4-hydroxylcarbazoles by domino vinylogous conjugate addition/cyclization/elimination/aromatization of easily prepared 3-nitroindoles with alkylidene azlactones under mild and transition-metal-free conditions has been developed. This method was also applicable to other nitrosubstituted benzofused heterocycles such as 3-nitrobenzothiophene, 2-nitrobenzothiophene, and 2-nitrobenzofuran. The valuable tetracyclic carbazole derivatives, such as 6H-oxazolo[4,5-c]carbazole and 3,6-dihydro-2H-oxazolo[4,5-c]carbazol-2-one, were readily prepared from the product, demonstrating synthetic utility of this method.
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Wittmann S, Martzel T, Pham Truong CT, Toffano M, Oudeyer S, Guillot R, Bournaud C, Gandon V, Brière J, Vo‐Thanh G. Alkylidene Meldrum's Acids as Platforms for the Vinylogous Synthesis of Dihydropyranones. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014489] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Stéphane Wittmann
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182 Université Paris Saclay 91405 Orsay Cedex France
| | - Thomas Martzel
- Normandie Univ UNIROUEN INSA Rouen CNRS COBRA 76000 Rouen France
| | - Cong Thanh Pham Truong
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182 Université Paris Saclay 91405 Orsay Cedex France
| | - Martial Toffano
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182 Université Paris Saclay 91405 Orsay Cedex France
| | - Sylvain Oudeyer
- Normandie Univ UNIROUEN INSA Rouen CNRS COBRA 76000 Rouen France
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182 Université Paris Saclay 91405 Orsay Cedex France
| | - Chloée Bournaud
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182 Université Paris Saclay 91405 Orsay Cedex France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182 Université Paris Saclay 91405 Orsay Cedex France
- Laboratoire de Chimie Moléculaire (LCM) CNRS UMR 9168 Ecole Polytechnique, Institut Polytechnique de Paris route de Saclay 91128 Palaiseau cedex France
| | | | - Giang Vo‐Thanh
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182 Université Paris Saclay 91405 Orsay Cedex France
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Wittmann S, Martzel T, Pham Truong CT, Toffano M, Oudeyer S, Guillot R, Bournaud C, Gandon V, Brière J, Vo‐Thanh G. Alkylidene Meldrum's Acids as Platforms for the Vinylogous Synthesis of Dihydropyranones. Angew Chem Int Ed Engl 2021; 60:11110-11114. [DOI: 10.1002/anie.202014489] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Indexed: 02/02/2023]
Affiliation(s)
- Stéphane Wittmann
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182 Université Paris Saclay 91405 Orsay Cedex France
| | - Thomas Martzel
- Normandie Univ UNIROUEN INSA Rouen CNRS COBRA 76000 Rouen France
| | - Cong Thanh Pham Truong
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182 Université Paris Saclay 91405 Orsay Cedex France
| | - Martial Toffano
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182 Université Paris Saclay 91405 Orsay Cedex France
| | - Sylvain Oudeyer
- Normandie Univ UNIROUEN INSA Rouen CNRS COBRA 76000 Rouen France
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182 Université Paris Saclay 91405 Orsay Cedex France
| | - Chloée Bournaud
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182 Université Paris Saclay 91405 Orsay Cedex France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182 Université Paris Saclay 91405 Orsay Cedex France
- Laboratoire de Chimie Moléculaire (LCM) CNRS UMR 9168 Ecole Polytechnique, Institut Polytechnique de Paris route de Saclay 91128 Palaiseau cedex France
| | | | - Giang Vo‐Thanh
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182 Université Paris Saclay 91405 Orsay Cedex France
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Curti C, Battistini L, Sartori A, Zanardi F. New Developments of the Principle of Vinylogy as Applied to π-Extended Enolate-Type Donor Systems. Chem Rev 2020; 120:2448-2612. [PMID: 32040305 PMCID: PMC7993750 DOI: 10.1021/acs.chemrev.9b00481] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Indexed: 12/19/2022]
Abstract
The principle of vinylogy states that the electronic effects of a functional group in a molecule are possibly transmitted to a distal position through interposed conjugated multiple bonds. As an emblematic case, the nucleophilic character of a π-extended enolate-type chain system may be relayed from the legitimate α-site to the vinylogous γ, ε, ..., ω remote carbon sites along the chain, provided that suitable HOMO-raising strategies are adopted to transform the unsaturated pronucleophilic precursors into the reactive polyenolate species. On the other hand, when "unnatural" carbonyl ipso-sites are activated as nucleophiles (umpolung), vinylogation extends the nucleophilic character to "unnatural" β, δ, ... remote sites. Merging the principle of vinylogy with activation modalities and concepts such as iminium ion/enamine organocatalysis, NHC-organocatalysis, cooperative organo/metal catalysis, bifunctional organocatalysis, dicyanoalkylidene activation, and organocascade reactions represents an impressive step forward for all vinylogous transformations. This review article celebrates this evolutionary progress, by collecting, comparing, and critically describing the achievements made over the nine year period 2010-2018, in the generation of vinylogous enolate-type donor substrates and their use in chemical synthesis.
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Affiliation(s)
| | | | | | - Franca Zanardi
- Dipartimento di Scienze degli
Alimenti e del Farmaco, Università
di Parma, Parco Area delle Scienze 27A, 43124 Parma, Italy
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Joshi H, Yadav A, Das A, Singh VK. Organocatalytic Asymmetric Hetero-Diels–Alder Reaction of in Situ Generated Dienes: Access to α,β-Unsaturated δ-Lactones Featuring CF3-Substituted Quaternary Stereocenter. J Org Chem 2020; 85:3202-3212. [DOI: 10.1021/acs.joc.9b03076] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Harshit Joshi
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, UP, India
| | - Ankit Yadav
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, UP, India
| | - Arko Das
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, UP, India
| | - Vinod K. Singh
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, UP, India
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11
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Marra IFS, de Castro PP, Amarante GW. Recent Advances in Azlactone Transformations. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901076] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Isabella F. S. Marra
- Chemistry Department; Federal University of Juiz de Fora; José Lourenço Kelmer, São Pedro Juiz de Fora Brazil
| | - Pedro P. de Castro
- Chemistry Department; Federal University of Juiz de Fora; José Lourenço Kelmer, São Pedro Juiz de Fora Brazil
| | - Giovanni W. Amarante
- Chemistry Department; Federal University of Juiz de Fora; José Lourenço Kelmer, São Pedro Juiz de Fora Brazil
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12
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Zhu B, Lu B, Zhang H, Xu X, Jiang Z, Chang J. Phase-Transfer-Catalyzed, Enantioselective Vinylogous Conjugate Addition–Cyclization of Olefinic Azlactones To Access Multifunctionalized Chiral Cyclohexenones. Org Lett 2019; 21:3271-3275. [DOI: 10.1021/acs.orglett.9b01001] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Bo Zhu
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P.R. China
| | - Bohua Lu
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P.R. China
| | - Huifang Zhang
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P.R. China
| | - Xinyao Xu
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P.R. China
| | - Zhiyong Jiang
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P.R. China
- Key Laboratory of Natural Medicine and Immuno-Engineering of Henan Province, Henan University, Jinming Campus, Kaifeng, Henan 475004, P.R. China
| | - Junbiao Chang
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P.R. China
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13
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Highly chemo- and enantioselective vinylogous aldol/cyclization cascade reaction to construct chiral 5,6-dihydropyran-2-ones. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.05.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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14
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Ruan S, Lin X, Xie L, Lin L, Feng X, Liu X. Asymmetric synthesis of 3-aminodihydrocoumarins via the chiral guanidine catalyzed cascade reaction of azlactones. Org Chem Front 2018. [DOI: 10.1039/c7qo00768j] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A new asymmetric preparative method of 3-aminodihydrocoumarins via reactions of azlactones and 2-nitrovinylphenols using chiral bifunctional guanidine catalysts.
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Affiliation(s)
- Sai Ruan
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaobin Lin
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Lihua Xie
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
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