1
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Powderly M, Roseau M, Frison G, Hammami R, Chausset-Boissarie L, Harrowven D, Legros J, Chataigner I. Controlling Diastereoselectivity in Dearomatizing Diels-Alder Reactions of Nitroarenes with 2-Trimethylsilyloxycyclohexadiene. Chemistry 2024; 30:e202303697. [PMID: 38619531 DOI: 10.1002/chem.202303697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 03/29/2024] [Accepted: 04/15/2024] [Indexed: 04/16/2024]
Abstract
Dearomative Diels-Alder cycloadditions between nitroarenes and 2-trimethylsilyloxycyclohexadiene are carried out under high pressure at room temperature in the absence of any chemical promoter. Reactions are performed with different arenes, including the highly aromatic naphthalenes and quinolines. They lead to 3D-scaffolds with exquisite exo-diastereoselectivity. The exo approach is characterized by lower distortion of the substrates in a late TS and by more favorable orbital interactions presumably between the nitro group and the dienic part, explaining the stereoselectivity.
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Affiliation(s)
- Marian Powderly
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, INC3 M FR 3038, 76000, Rouen, France
- Chemistry, University of Southampton, Highfield, Southampton, UK
| | - Mélanie Roseau
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, INC3 M FR 3038, 76000, Rouen, France
| | - Gilles Frison
- Sorbonne Université, CNRS, Laboratoire de Chimie Théorique, LCT, F-75005, Paris, France
| | - Rayhane Hammami
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, INC3 M FR 3038, 76000, Rouen, France
| | - Laetitia Chausset-Boissarie
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, INC3 M FR 3038, 76000, Rouen, France
| | - David Harrowven
- Chemistry, University of Southampton, Highfield, Southampton, UK
| | - Julien Legros
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, INC3 M FR 3038, 76000, Rouen, France
| | - Isabelle Chataigner
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, INC3 M FR 3038, 76000, Rouen, France
- Sorbonne Université, CNRS, Laboratoire de Chimie Théorique, LCT, F-75005, Paris, France
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2
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Babu SA, E J, John J. Annulation reactions of electrophilic benzannulated heterocycles towards heteroacenes. Chem Commun (Camb) 2024; 60:1674-1689. [PMID: 38258327 DOI: 10.1039/d3cc05449g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
The current review describes different annulation strategies reported with electrophilic benzannulated heterocycles for accessing heteroacenes. For the past two decades, the chemistry of electrophilic benzannulated heterocycles was extensively investigated, and several dipolar cycloadditions, metal and organo-catalyzed transformations were introduced for the generation of fused heterocycles. In this review, we have collected all the reports where the annulation of electrophilic benzannulated heterocycles results in a fully aromatic system, viz. heteroacenes with tri-, tetra-, and pentacyclic rings. We reviewed every paper on the synthesis of fused heterocycles that was accessible and categorized the review into several parts based on the electrophilic benzannulated heterocycle used in the heteroacene synthesis such as electrophilic indole, electrophilic benzothiophene, and so forth. The generality and mechanistic postulates of each methodology are highlighted. In addition, we have also tried to feature the advantages or shortcomings of each method and have mentioned the possible applications of these methodologies for accessing heteroacenes for material applications.
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Affiliation(s)
- Sheba Ann Babu
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram-695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India.
| | - Jijy E
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram-695019, India
- Department of Chemistry, MES College, Nedumkandam, Idukki, Kerala-685553, India.
| | - Jubi John
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram-695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India.
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3
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Ryckaert B, Hullaert J, Van Hecke K, Winne JM. Dithioallyl Cations in Stereoselective Dearomative (3 + 2) Cycloadditions of Benzofurans: Mechanism and Synthetic Applications. J Org Chem 2023; 88:14504-14514. [PMID: 37812456 DOI: 10.1021/acs.joc.3c01546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
A stereoselective dearomative cyclopentannulation of benzofurans is reported. A previously reported dearomative (3 + 2) cycloaddition of indoles with 1,4-dithiane-fused allyl cations was found to lack stereoselectivity when more substituted cyclopentene rings are targeted. However, for benzofuran substrates, excellent levels of stereoselectivity were observed for the same allyl cation reagents under very similar reaction conditions. In this full account, we provide a mechanistic rationale and some design principles that govern the stereoselectivity of the intriguing dearomative transformations using dithioallyl cations and demonstrate how the stereoselectivity depends on electronic factors of the starting materials. The stereoselective methodology is also applied in a straightforward dearomative synthesis of the tricyclic sesquiterpenoid natural product aplysin and its analogues, starting from a simple benzofuran.
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Affiliation(s)
- Bram Ryckaert
- OS Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, Ghent B-9000, Belgium
| | - Jan Hullaert
- OS Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, Ghent B-9000, Belgium
| | - Kristof Van Hecke
- XStruct, Department of Chemistry, Ghent University, Krijgslaan 281-S3, Ghent B-9000, Belgium
| | - Johan M Winne
- OS Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, Ghent B-9000, Belgium
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4
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Dutta L, Mondal A, Maurya JP, Mukhopadhyay D, Ramasastry SSV. Conceptual advances in nucleophilic organophosphine-promoted transformations. Chem Commun (Camb) 2023; 59:11045-11056. [PMID: 37656437 DOI: 10.1039/d3cc03648k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Catalysis by trivalent nucleophilic organophosphines has emerged as an essential tool in organic synthesis. Several new organic transformations promoted by phosphines substantiate and complement the existing synthetic chemistry tools. Mere design of the substrate and reagent combinations has introduced new modes of reactivity patterns, which are otherwise difficult to achieve. These design considerations have led to the rapid build-up of complex molecular entities and laid a solid foundation to synthesise bioactive natural products and pharmaceuticals. This article presents an overview of some of the conceptual advances, including our contributions to nucleophilic organophosphine chemistry. The scope, limitations, mechanistic insights, and applications of these metal-free transformations are discussed elaborately.
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Affiliation(s)
- Lona Dutta
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Manauli PO, S. A. S. Nagar, Punjab 140306, India.
| | - Atanu Mondal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Manauli PO, S. A. S. Nagar, Punjab 140306, India.
| | - Jay Prakash Maurya
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Manauli PO, S. A. S. Nagar, Punjab 140306, India.
| | - Dipto Mukhopadhyay
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Manauli PO, S. A. S. Nagar, Punjab 140306, India.
| | - S S V Ramasastry
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Manauli PO, S. A. S. Nagar, Punjab 140306, India.
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5
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Zhang H, Su RC, Qin YL, Wang XJ, Chen D, Liu XR, Jiang YX, Zhao P. Regioselective synthesis of 3-nitroindoles under non-acidic and non-metallic conditions. RSC Adv 2023; 13:26581-26586. [PMID: 37674482 PMCID: PMC10478488 DOI: 10.1039/d3ra03193d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 07/26/2023] [Indexed: 09/08/2023] Open
Abstract
An electrophilic substitution reaction, without acid and metal, of indole with ammonium tetramethylnitrate for accessing 3-nitroindole has been developed. In this protocol, trifluoroacetyl nitrate (CF3COONO2) was produced by metathesis of ammonium tetramethyl nitrate and trifluoroacetic anhydride at sub-room temperature. Trifluoroacetyl nitrate (CF3COONO2) is an electrophilic nitrating agent for a variety of indoles, aromatic and heterocyclic aromaticity. Meanwhile, this strategy could be applied to construct the skeleton structure of many kinds of bioactive molecules. Interestingly, 3-nitroindole can be further derivatived as a pyrrolo[2,3-b]indole.
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Affiliation(s)
- Hua Zhang
- Department of Pharmacology, North Sichuan Medical College Nanchong 637100 China
- Institute of Materia Medica of North Sichuan Medical College China
| | - Rong-Chuan Su
- Department of Pharmacology, North Sichuan Medical College Nanchong 637100 China
- Institute of Materia Medica of North Sichuan Medical College China
| | - Yu-Li Qin
- Department of Pharmacology, North Sichuan Medical College Nanchong 637100 China
- Institute of Materia Medica of North Sichuan Medical College China
| | - Xiao-Juan Wang
- Department of Innovation & Entrepreneurship of NSMC China
| | - Dan Chen
- Department of Pharmacology, North Sichuan Medical College Nanchong 637100 China
- Institute of Materia Medica of North Sichuan Medical College China
| | - Xiao-Rong Liu
- Department of Pharmacology, North Sichuan Medical College Nanchong 637100 China
- Institute of Materia Medica of North Sichuan Medical College China
| | - Yu-Xin Jiang
- Department of Pharmacology, North Sichuan Medical College Nanchong 637100 China
- Institute of Materia Medica of North Sichuan Medical College China
| | - Peng Zhao
- Department of Pharmacology, North Sichuan Medical College Nanchong 637100 China
- Institute of Materia Medica of North Sichuan Medical College China
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6
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Dutta L, Chattopadhyay A, Yadav N, Ramasastry SSV. Phosphine-catalysed denitrative rearomatising (3 + 2) annulation of α,β-ynones and 3-nitroindoles. Org Biomol Chem 2023; 21:738-742. [PMID: 36601997 DOI: 10.1039/d2ob02180c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We describe a metal-free strategy to access various α-arylidene cyclopenta[b]indoles via phosphine-catalysed (3 + 2) annulation of α,β-ynones and 3-nitroindoles. For the first time, the rearomatisation of the indole nucleus was observed in such an annulative transformation. The method was extended to the synthesis of an antimalarial natural product, bruceolline E.
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Affiliation(s)
- Lona Dutta
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S. A. S. Nagar, Punjab 140306, India.
| | - Anwita Chattopadhyay
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S. A. S. Nagar, Punjab 140306, India.
| | - Nisha Yadav
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S. A. S. Nagar, Punjab 140306, India.
| | - S S V Ramasastry
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S. A. S. Nagar, Punjab 140306, India.
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7
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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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8
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Manikandan P, Agneswaran R, Pavunkumar V, Mohanakrishnan AK. A Formal (4 + 2) Cycloaddition of Phosphorus Ylides: Synthesis of Aromatic and Heteroaromatic 1,2-Diesters and Diones. Org Lett 2022; 24:4502-4506. [PMID: 35708208 DOI: 10.1021/acs.orglett.2c01234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Heteroarylmethylenephosphorus ylides underwent Michael addition with alkynediones and alkynediesters, followed by intramolecular cyclization and elimination of triphenylphosphine oxide to afford 1,2-diaroylbenzenes and 1,2-alkoxycarbonylcarbo- and heterocycles. The analogous (4 + 2) cycloaddition led to the formation of 2,3-diaroylquinolines.
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Affiliation(s)
- Palani Manikandan
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai-600 025, Tamil Nadu, India
| | - Rudrasenan Agneswaran
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai-600 025, Tamil Nadu, India
| | - Vinayagam Pavunkumar
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai-600 025, Tamil Nadu, India
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9
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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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10
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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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11
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An F, Jangra H, Wei Y, Shi M, Zipse H, Ofial AR. Reactivities of allenic and olefinic Michael acceptors towards phosphines. Chem Commun (Camb) 2022; 58:3358-3361. [PMID: 35188503 DOI: 10.1039/d1cc06786a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The kinetics of the reactions of tributylphosphine with allenic and olefinic Michael acceptors in dichloromethane at 20 °C was followed by photometric and NMR spectroscopic methods. Combination with DFT-calculated methyl anion affinities revealed the relevance of retroaddition barriers in phosphine-catalysed reactions when mixtures of allenic and olefinic substrates are used.
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Affiliation(s)
- Feng An
- Department Chemie, Ludwig-Maximilians-Universtität München, Butenandtstr. 5-13, München 81377, Germany.
| | - Harish Jangra
- Department Chemie, Ludwig-Maximilians-Universtität München, Butenandtstr. 5-13, München 81377, Germany.
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, P. R. China.
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, P. R. China. .,Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 MeiLong Road, Shanghai 200237, P. R. China
| | - Hendrik Zipse
- Department Chemie, Ludwig-Maximilians-Universtität München, Butenandtstr. 5-13, München 81377, Germany.
| | - Armin R Ofial
- Department Chemie, Ludwig-Maximilians-Universtität München, Butenandtstr. 5-13, München 81377, Germany.
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12
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Osipov DV, Korzhenko KS, Rashchepkina DA, Artemenko AA, Demidov OP, Shiryaev VA, Osyanin VA. Catalyst-free formal [3 + 2] cycloaddition of stabilized N, N-cyclic azomethine imines to 3-nitrobenzofurans and 3-nitro-4 H-chromenes: access to heteroannulated pyrazolo[1,2- a]pyrazoles. Org Biomol Chem 2021; 19:10156-10168. [PMID: 34778893 DOI: 10.1039/d1ob01377g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We have studied the [3 + 2]-cycloaddition of various N,N-cyclic azomethine imines to 3-nitrobenzofurans. This process is a rare example of their dearomatization. We have also extended this process to the related 3-nitro-4H-chromenes as dipolarophiles. Both reactions provide access to benzofuro- and chromeno-condensed pyrazolo[1,2-a]pyrazoles with 100% atom economy in a diastereoselective manner under mild eco-friendly conditions. Finally, on the basis of DFT calculations, the mechanistic insights into the mentioned [3 + 2]-cycloadditions and explanations of the experimentally determined limitations of the method are given. Hirshfeld atomic charge values of push-pull heterocycles were suggested as a criterion for a priori assessment of the possibility of their dipolar cycloaddition with N,N-cyclic azomethine imines.
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Affiliation(s)
- Dmitry V Osipov
- Department of Organic Chemistry, Chemical Technological Faculty, Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russia.
| | - Kirill S Korzhenko
- Department of Organic Chemistry, Chemical Technological Faculty, Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russia.
| | - Daria A Rashchepkina
- Department of Organic Chemistry, Chemical Technological Faculty, Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russia.
| | - Alina A Artemenko
- Department of Organic Chemistry, Chemical Technological Faculty, Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russia.
| | - Oleg P Demidov
- Department of Chemistry, North Caucasus Federal University, 1 Pushkin St., Stavropol 355009, Russia
| | - Vadim A Shiryaev
- Department of Organic Chemistry, Chemical Technological Faculty, Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russia.
| | - Vitaly A Osyanin
- Department of Organic Chemistry, Chemical Technological Faculty, Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russia.
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13
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Osipov DV, Rashchepkina DА, Аrtemenko AА, Demidov OP, Osyanin VА. Nucleophilic Dearomatization of 3-nitrobenzofurans by the Action of 2-(1-arylethylidene)Malononitriles. Chem Heterocycl Compd (N Y) 2021. [DOI: 10.1007/s10593-021-03013-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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14
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Osyanin VА, Osipov DV, Rashchepkina DА, Klimochkin YN. Methods for the Preparation of 3-Nitrobenzofurans. Chem Heterocycl Compd (N Y) 2021. [DOI: 10.1007/s10593-021-02957-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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15
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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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16
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Manneveau M, Tanii S, Gens F, Legros J, Chataigner I. Dearomatization of 3-cyanoindoles by (3 + 2) cycloaddition: from batch to flow chemistry. Org Biomol Chem 2021; 18:3481-3486. [PMID: 32347286 DOI: 10.1039/d0ob00582g] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
1,3-Dipolar dearomatizing cycloadditions between a non-stabilized azomethine ylide and 3-cyanoindoles or benzofuran afford the corresponding 3D-heterocycles bearing a quaternary carbon centre at the ring junction. While 6 equivalents of ylide precursor 1 are required for full conversion in a classical flask, working under flow conditions limits the excess (3 equiv., tR = 1 min) and leads to a cleaner process, affording cycloadducts that are easier to isolate.
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Affiliation(s)
- Maxime Manneveau
- Normandie Université, UNIROUEN, CNRS, INSA Rouen, COBRA laboratory, F-76000 Rouen, France.
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17
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Nair SR, Baire B. Recent Dearomatization Strategies of Benzofurans and Benzothiophenes. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100025] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Sindoori R. Nair
- Department of Chemistry Indian Institute of Technology Madras Chennai 600036 India
| | - Beeraiah Baire
- Department of Chemistry Indian Institute of Technology Madras Chennai 600036 India
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18
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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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19
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Xiong J, Zhao X, Feng X, Xianxing J. Decarboxylative Propargylation/Hydroamination/Aromatization Enabled by Copper/ Amine Cooperative Catalysis: Construction of Cyclopenta[b]indole Derivatives. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999200701115141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
An efficient decarboxylative cycloaddition of 2,3-dioxopyrrolidines and ethynyl
benzoxazinanones has been established by cooperative copper/amine catalysis. A copper–
allenylidene complex and enolate intermediate, each catalytically generated from distinct
substrates, underwent a cascade propargylation/hydroamination/aromatization process to
construct a big library of cyclopenta[b]indole derivatives with good to excellent yields and
excellent diastereoselectivity.
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Affiliation(s)
- Jiale Xiong
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Xiaoyun Zhao
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Xing Feng
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Jiang Xianxing
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
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Wang KK, Xie YX, Li YL, Chen R, Wang ZY. Dearomative [3 + 2] cycloaddition reaction of nitrobenzothiophenes with nonstabilized azomethine ylides. RSC Adv 2020; 10:28720-28724. [PMID: 35520074 PMCID: PMC9055820 DOI: 10.1039/d0ra05687a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 07/28/2020] [Indexed: 12/14/2022] Open
Abstract
A highly diastereoselective dearomative [3 + 2] 1,3-dipolar cycloaddition reaction of nitrobenzothiophenes with an in situ-generated nonstabilized azomethine ylides has been developed. The transformation provides a series of functionalized fused tricyclic benzo[4,5]thieno[2,3-c]pyrroles in good yields (up to 92%) under mild reaction conditions. In addition, a gram-scale experiment and the synthetic transformation of the cycloadduct further highlighted the synthetic utility. The relative configurations of the typical products were clearly confirmed by X-ray crystallography.
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Affiliation(s)
- Kai-Kai Wang
- School of Pharmacy, Xinxiang University Xinxiang 453000 P. R. China
| | - Yan-Xin Xie
- School of Chemistry and Materials Engineering, Xinxiang University Xinxiang 453000 P. R. China
| | - Yan-Li Li
- Medical College, Xinxiang University Xinxiang 453000 P. R. China
| | - Rongxiang Chen
- School of Pharmacy, Xinxiang University Xinxiang 453000 P. R. China
| | - Zhan-Yong Wang
- School of Pharmacy, Xinxiang University Xinxiang 453000 P. R. China
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21
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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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22
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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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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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24
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Huang H, Li QZ, Liu YQ, Leng HJ, Xiang P, Dai QS, He XH, Huang W, Li JL. Dearomative [4 + 2] annulations between 3-nitroindoles and enals through oxidative N-heterocyclic carbene catalysis. Org Chem Front 2020. [DOI: 10.1039/d0qo00868k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A novel intermolecular dearomative [4 + 2] annulation of 3-nitroindoles and enals under oxidative N-heterocyclic carbene catalysis has been developed. This protocol was also suitable for the oxidative cyclisation of 2-nitrobenzothiophenes with enals.
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Affiliation(s)
- Hua Huang
- State Key Laboratory of Southwestern Chinese Medicine Resources
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Qing-Zhu Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- PR China
| | - Yan-Qing Liu
- State Key Laboratory of Southwestern Chinese Medicine Resources
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Hai-Jun Leng
- State Key Laboratory of Southwestern Chinese Medicine Resources
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Peng Xiang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- PR China
| | - Qing-Song Dai
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- PR China
| | - Xiang-Hong He
- State Key Laboratory of Southwestern Chinese Medicine Resources
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Wei Huang
- State Key Laboratory of Southwestern Chinese Medicine Resources
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Jun-Long Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- PR China
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25
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Li EQ, Huang Y. Recent advances in phosphine catalysis involving γ-substituted allenoates. Chem Commun (Camb) 2020; 56:680-694. [DOI: 10.1039/c9cc08241g] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This feature article will describe the selected examples of organophosphine catalysis of γ-substituent allenoates with a wide range of electrophiles to give diverse annulations.
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Affiliation(s)
- Er-Qing Li
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- P. R. China
| | - You Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
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Antoniak D, Barbasiewicz M. Corey-Chaykovsky Cyclopropanation of Nitronaphthalenes: Access to Benzonorcaradienes and Related Systems. Org Lett 2019; 21:9320-9325. [PMID: 31710231 DOI: 10.1021/acs.orglett.9b03375] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Nitronaphthalene derivatives react as Michael acceptors in the Corey-Chaykovsky reaction with alkyl phenyl selenones and alkyl diphenyl sulfonium salts. Mechanistic studies reveal that sterically demanding substituents at the carbanionic center favor formation of cyclopropanes and suppress competitive β-elimination to the alkylated products. The transformation, demonstrated also on heterocyclic nitroquinoline and nitroindazolines, is an example of transition metal-free dearomatization method.
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Affiliation(s)
- Damian Antoniak
- Faculty of Chemistry , University of Warsaw , Pasteura 1 , 02-093 Warsaw , Poland
| | - Michał Barbasiewicz
- Faculty of Chemistry , University of Warsaw , Pasteura 1 , 02-093 Warsaw , Poland
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