1
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Zhuo JR, Zhao JQ, Yang L, Wu YL, Zhang YP, You Y, Wang ZH, Zhou MQ, Yuan WC. Thiol-Triggered Tandem Dearomative Michael Addition/Intramolecular Henry Reaction of 2-Nitrobenzofurans: Access to Sulfur-Containing Polyheterocyclic Compounds. Org Lett 2024; 26:2623-2628. [PMID: 38522081 DOI: 10.1021/acs.orglett.4c00646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
An efficient dearomative cyclization of 2-nitrobenzofurans via a thiol-triggered tandem Michael addition/intramolecular Henry reaction has been developed. A range of thiochromeno[3,2-b]benzofuran-11-ols and tetrahydrothieno[3,2-b]benzofuran-3-ols could be obtained in up to 99% yield and up to >20:1 dr. The valuable thiochromone fused benzofurans could be prepared with the reaction of 2-nitrobenzofurans and 2-mercaptobenzaldehyde via the tandem dearomative Michael addition/intramolecular Henry reaction/rearomatization/oxidative dehydrogenation process in a one-pot two-step operation. A mechanism for the reaction was tentatively proposed.
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Affiliation(s)
- Jun-Rui Zhuo
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
- Zunyi Medical and Pharmaceutical College, Zunyi 563006, China
| | - Jian-Qiang Zhao
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Lei Yang
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Yu-Lu Wu
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Yan-Ping Zhang
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Yong You
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Zhen-Hua Wang
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Ming-Qiang Zhou
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei-Cheng Yuan
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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2
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Yuan WC, Zeng HY, Zhang YP, Zhao JQ, You Y, Yin JQ, Zhou MQ, Wang ZH. Synthesis of Benzofuro[3,2- b]indol-3-one Derivatives via Dearomative (3 + 2) Cycloaddition of 2-Nitrobenzofurans and para-Quinamines. Molecules 2024; 29:1163. [PMID: 38474676 DOI: 10.3390/molecules29051163] [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: 02/08/2024] [Revised: 03/02/2024] [Accepted: 03/02/2024] [Indexed: 03/14/2024] Open
Abstract
An efficient dearomative (3 + 2) cycloaddition of para-quinamines and 2-nitrobenzofurans has been developed. This reaction proceeds smoothly under mild conditions and affords a series of benzofuro[3,2-b]indol-3-one derivatives in good to excellent yields (up to 98%) with perfect diastereoselectivities (all cases > 20:1 dr). The scale-up synthesis and versatile derivatizations demonstrate the potential synthetic application of the protocol. A plausible reaction mechanism is also proposed to account for the observed reaction process. This work represents the first instance of the N-triggered dearomative (3 + 2) cycloaddition of 2-nitrobenzofurans.
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Affiliation(s)
- Wei-Cheng Yuan
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
- China National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Hai-Ying Zeng
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
- China National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Yan-Ping Zhang
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Jian-Qiang Zhao
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Yong You
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Jun-Qing Yin
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Ming-Qiang Zhou
- China National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Zhen-Hua Wang
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
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3
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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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4
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Ben Salah S, Othman M, Sanselme M, Daïch A, Chataigner I, Lawson AM. Dichotomic Dearomatizations of Benzene vs Pyridine Rings of Sulfonyloxypyridine via (3 + 2) Cycloaddition. J Org Chem 2023; 88:12265-12275. [PMID: 37560980 DOI: 10.1021/acs.joc.3c00901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Electron-poor arenesulfonyloxypyridines are selectively dearomatized whether on the pyridine or on the phenyl group through 1,3-dipolar cycloaddition (1,3-DC) involving non-stabilized azomethine ylides (AMY). Electronic effects of substituents on the aromatic rings allow to induce the regioselectivity of the transformation. Novel pyrrolidinic polycyclic heterocycles are thereby produced under mild acidic conditions at room temperature.
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Affiliation(s)
- Sami Ben Salah
- Normandie Univ; UNILEHAVRE, URCOM, EA 3221, 25 rue Philipe Lebon, F-76600 Le Havre Cedex, France
| | - Mohamed Othman
- Normandie Univ; UNILEHAVRE, URCOM, EA 3221, 25 rue Philipe Lebon, F-76600 Le Havre Cedex, France
| | - Morgane Sanselme
- UNIROUEN, Laboratoire SMS UR3233, Normandie Univ; Place Emile Blondel, France; F-76821 Mont Saint Aignan, France
| | - Adam Daïch
- Normandie Univ; UNILEHAVRE, URCOM, EA 3221, 25 rue Philipe Lebon, F-76600 Le Havre Cedex, France
| | - Isabelle Chataigner
- UNIROUEN, CNRS, INSA Rouen, COBRA laboratory, Normandie Univ; F-76000 Rouen, France
- CNRS, Sorbonne Université, LCT UMR 7616, F-75005 Paris, France
| | - Ata Martin Lawson
- Normandie Univ; UNILEHAVRE, URCOM, EA 3221, 25 rue Philipe Lebon, F-76600 Le Havre Cedex, France
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5
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Masaeli SE, Teimouri M, Adhikari B, Attarroshan M, Akin JW, Raju S, Stokes SL, Emerson JP. Sodium Trifluoroacetate mediated Copper-Catalyzed aza-Michael addition of α,β-unsaturated olefins with aromatic amines. Tetrahedron Lett 2023; 122:154520. [PMID: 37694227 PMCID: PMC10486139 DOI: 10.1016/j.tetlet.2023.154520] [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] [Indexed: 09/12/2023]
Abstract
We present a sodium trifluoroacetate (CF3CO2Na) mediated copper-catalyzed aza-Michael addition of aromatic amines with activated olefins under mild, aqueous reaction conditions. This simplistic protocol employs a copper catalyst (10 mol%) and water as solvent. This transformation occurs precisely with aromatic substituted amines containing both electron-donating (EDG) and electron-withdrawing (EWG) groups. A broad range of substrates were tested under the optimized conditions, which are producing good to moderate yields.
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Affiliation(s)
- S. Erfan Masaeli
- Department of Chemistry, Mississippi State University, MS 39762, USA
| | - Mohsen Teimouri
- Department of Chemistry, Mississippi State University, MS 39762, USA
| | | | | | - James W. Akin
- Department of Chemistry, Mississippi State University, MS 39762, USA
| | - Selvam Raju
- Department of Chemistry, Mississippi State University, MS 39762, USA
| | - Sean L. Stokes
- Department of Chemistry, Mississippi State University, MS 39762, USA
| | - Joseph P. Emerson
- Department of Chemistry, Mississippi State University, MS 39762, USA
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6
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Huang J, Wang W, Zhang L, Meng X. Recent advances in the synthesis of benzo[b]thiophene fused polycyclic derivatives: strategies and reactions. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.108003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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7
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Li TH, Niu C, Du DM. Enantioselective synthesis of isoxazole-containing spirooxindole tetrahydroquinolines via squaramide-catalysed cascade reactions. Org Biomol Chem 2022; 20:5582-5588. [PMID: 35796306 DOI: 10.1039/d2ob00864e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A class of o-sulfonylaminostyryl isoxazole synthons were designed and demonstrated to be useful building blocks in asymmetric cascade aza-Michael/Michael reaction with 3-olefinic oxindoles. This squaramide-catalysed cascade reaction afforded structurally complex isoxazole-containing spirooxindole tetrahydroquinolines bearing three contiguous stereocenters in good to excellent yields (up to 99%) with high diastereoselectivities (up to >20 : 1 dr) and enantioselectivities (up to 88% ee). Moreover, the gram-scale synthesis and synthetic transformations were also demonstrated.
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Affiliation(s)
- Tong-Hao Li
- Key Laboratory of Medical Molecule Science & Pharmaceutics Engineering (Ministry of Industry and Information Technology), School of Chemistry and Chemical Engineering, Beijing Institute of Technology, No.5 Zhongguancun South Street, Beijing 100081, People's Republic of China..
| | - Cheng Niu
- Key Laboratory of Medical Molecule Science & Pharmaceutics Engineering (Ministry of Industry and Information Technology), School of Chemistry and Chemical Engineering, Beijing Institute of Technology, No.5 Zhongguancun South Street, Beijing 100081, People's Republic of China..
| | - Da-Ming Du
- Key Laboratory of Medical Molecule Science & Pharmaceutics Engineering (Ministry of Industry and Information Technology), School of Chemistry and Chemical Engineering, Beijing Institute of Technology, No.5 Zhongguancun South Street, Beijing 100081, People's Republic of China..
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8
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Rao GA, Gurubrahamam R, Chen K. Base‐Catalysed [4+2]‐Annulation Between 2‐Nitrobenzofurans and N‐Alkoxyacrylamides: Synthesis of [3,2‐b]Benzofuropyridinones. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gunda Ananda Rao
- National Taiwan Normal University - Gongguan Campus Department of Chemistry TAIWAN
| | - Ramani Gurubrahamam
- Indian Institute of Technology Jammu Department of Chemistry jagti, nagrota bypass road 181221 Jammu INDIA
| | - Kwunmin Chen
- National Taiwan Normal University - Gongguan Campus Department of Chemistry INDIA
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9
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Ma R, Yang H, Ye L, Yang Q, Shi Z, Zhao Z, Li X. Stereoselective Synthesis of Chiral Hydrophenanthridines via a One-Pot Stepwise Aza-Michael/Michael/Michael Process. Org Lett 2022; 24:4798-4803. [PMID: 35758631 DOI: 10.1021/acs.orglett.2c01866] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A one-pot, two-step aza-Michael/Michael/Michael process was developed to diastereospecifically construct C6a,C10a-cis-hydrophenanthridines in a highly enantioselective manner (83-99% ee). The tricyclic products were provided in 50-99% isolated yields, sequentially promoted by bifunctional squaramide and diamine in a one-pot operation. This doubly annulative protocol indicated that the complicated polycyclic structures could be easily constructed via full employment of the available reaction sites of readily prepared precursors.
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Affiliation(s)
- Ruiying Ma
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Hongzhou Yang
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Ling Ye
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Qiang Yang
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Zhichuan Shi
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Zhigang Zhao
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Xuefeng Li
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
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10
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Tian HZ, Wu SF, Lin GQ, Sun XW. Asymmetric synthesis of pyrrolo[2,3–b]indole scaffolds by organocatalytic [3 + 2] dearomative annulation. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Dyguda M, Skrzyńska A, Sieroń L, Albrecht Ł. Dearomative Michael addition involving enals and 2-nitrobenzofurans realized under NHC-catalysis. Chem Commun (Camb) 2022; 58:5367-5370. [PMID: 35352710 DOI: 10.1039/d2cc00294a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In this manuscript, the first enantioselective dearomative Michael addition between α,β-unsaturated aldehydes and 2-nitrobenzofurans realized under N-heterocyclic carbene activation has been described. The reaction proceeds via addition of homoenolate to Michael acceptors leading to the formation of biologically important heterocycles with high yields and stereoselectivities. Their functionalization potential has been confirmed in selected, diastereoselective transformations.
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Affiliation(s)
- Mateusz Dyguda
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland
| | - Anna Skrzyńska
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland
| | - Lesław Sieroń
- Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, Łódź, 90-924, Poland.
| | - Łukasz Albrecht
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland
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12
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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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13
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Laviós A, Sanz-Marco A, Vila C, Muñoz MC, Pedro JR, Blay G. Metal-Free Diastereo- and Enantioselective Dearomative Formal [3 + 2] Cycloaddition of 2-Nitrobenzofurans and Isocyanoacetate Esters. Org Lett 2022; 24:2149-2154. [PMID: 35293212 PMCID: PMC8961877 DOI: 10.1021/acs.orglett.2c00427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
The diastereo- and
enantioselective dearomative formal [3 + 2]
cycloaddition of 2-nitrobenzofurans and α-aryl-α-isocyanoacetate
esters provides tricyclic compounds bearing the 3a,8b-dihydro-1H-benzofuro[2,3-c]pyrrole framework with three consecutive stereogenic centers.
The reaction was enabled by a cupreine-ether organocatalyst. The reaction
products were obtained with almost full diastereoselectivity and with
excellent enantiomeric excesses for a number of substituted 2-nitrobenzofurans
and isocyanoacetates.
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Affiliation(s)
- Adrian Laviós
- Departament de Química Orgànica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100 Burjassot, València, Spain
| | - Amparo Sanz-Marco
- Departament de Química Orgànica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100 Burjassot, València, Spain
| | - Carlos Vila
- Departament de Química Orgànica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100 Burjassot, València, Spain
| | - M Carmen Muñoz
- Departament de Física Aplicada, Universitat Politècnica de València, Camí de Vera S/N, 46022 València, Spain
| | - José R Pedro
- Departament de Química Orgànica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100 Burjassot, València, Spain
| | - Gonzalo Blay
- Departament de Química Orgànica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100 Burjassot, València, Spain
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14
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Zhang JL, Ma R, Zhao HH, Xu PF. Enantioselective construction of spiro-tetrahydroquinoline scaffolds through asymmetric catalytic cascade reactions. Chem Commun (Camb) 2022; 58:3493-3496. [PMID: 35191451 DOI: 10.1039/d2cc00502f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
An efficient and concise strategy has been successfully developed for merging spiro-tetrahydroquinoline with spiro-benzofuranone into a single new skeleton through asymmetric catalytic cascade reactions catalyzed by quinine-derived chiral bifunctional squaramide organocatalysts. In this approach, differently substituted spiro-tetrahydroquinoline derivatives were smoothly obtained with high yields, and excellent diastereoselectivities and enantioselectivities (up to 99% yield, up to >20 : 1 dr, up to >99% ee, 40 examples) under mild reaction conditions.
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Affiliation(s)
- Jia-Lu Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Rui Ma
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Huan-Huan Zhao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China. .,State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou 730000, P. R. China
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15
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Gu LJ, Han HB, Bu ZW, Wang QL. Dearomative Periphery Modification of Quinolinium Salts to Assemble Ring-Encumbered Pyrrolidine-Tetrahydroquinoline Polycycles. Org Lett 2022; 24:2008-2013. [PMID: 35266396 DOI: 10.1021/acs.orglett.2c00464] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report an unexpected dearomative periphery modification strategy for transforming quinolinium salts into structurally crowded pyrrolidine-tetrahydroquinoline polycyclic systems with complete regio- and diastereoselectivity. Importantly, the reaction pathway was regulated by simply tuning the substituents, achieving substituent-directed divergent synthesis. The notable features of this transformation include readily available starting materials, green conditions, a simple workup procedure, high bond- and ring-forming efficiency, and substituent-directed diverse synthesis.
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Affiliation(s)
- Li-Jie Gu
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, People's Republic of China
| | - Hua-Bin Han
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, People's Republic of China
| | - Zhan-Wei Bu
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, People's Republic of China
| | - Qi-Lin Wang
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, People's Republic of China
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16
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Kerru N, Maddila S, Jonnalagadda SB. Organo-catalysis as emerging tools in organic synthesis: aldol and Michael reactions. PHYSICAL SCIENCES REVIEWS 2022. [DOI: 10.1515/psr-2021-0023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Organocatalysis has occupied sustainable position in organic synthesis as a powerful tool for the synthesis of enantiomeric-rich compounds with multiple stereogenic centers. Among the various organic molecules for organocatalysis, the formation of carbon–carbon is viewed as a challenging issue in organic synthesis. The asymmetric aldol and Michael addition reactions are the most significant methods for C–C bond forming reactions. These protocols deliver a valuable path to access chiral molecules, which are useful synthetic hybrids in biologically potent candidates and desirable versatile pharmaceutical intermediates. This work highlighted the impact of organocatalytic aldol and Michael addition reactions in abundant solvent media. It focused on the crucial methods to construct valuable molecules with high enantio- and diastereo-selectivity.
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Affiliation(s)
- Nagaraju Kerru
- Department of Chemistry , GITAM School of Science, GITAM University , Bengaluru , Karnataka - 561203 , India
| | - Suresh Maddila
- Department of Chemistry , GITAM Institute of Sciences, GITAM University , Visakhapatnam , Andhra Pradesh , India
- School of Chemistry & Physics, University of KwaZulu-Natal , Westville Campus , Chiltern Hills , Durban - 4000 , South Africa
| | - Sreekantha B. Jonnalagadda
- School of Chemistry & Physics, University of KwaZulu-Natal , Westville Campus , Chiltern Hills , Durban - 4000 , South Africa
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17
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Ashitha KT, Krishna A, Basavaraja D, Sasidhar BS. Recent Advances in the Transition Metal-Free Synthesis of Heterocycles from α, β-Unsaturated Ketones. Org Chem Front 2022. [DOI: 10.1039/d2qo00278g] [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
Heterocyclic compounds are an inevitable part of our life. These important classes of molecules have a wide range of applications starting from life-sustaining drugs to agrochemicals. Numerous methods, including metal...
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18
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Gao C, Zhang T, Li X, Wu JD, Liu J. Asymmetric Decarboxylative [3+2] Cycloaddition for the Diastereo- and Enantioselective Synthesis of Spiro[2.4]heptanes via Cyclopropanation. Org Chem Front 2022. [DOI: 10.1039/d2qo00124a] [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
Asymmetric cycloaddition reaction has emerged as one of the powful and reliable strategies for the construction of enantioenriched molecules, especially those with polycyclic frameworks. Herein, we report the asymmetric decarboxylative...
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19
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Zhou P, Yi Y, Hua YZ, Jia SK, Wang MC. Dinuclear Zinc Catalyzed Enantioselective Dearomatization [3+2] Annulation of 2-Nitrobenzofurans and 2-Nitrobenzothiophenes. Chemistry 2021; 28:e202103688. [PMID: 34713514 DOI: 10.1002/chem.202103688] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Indexed: 12/18/2022]
Abstract
The application of dinuclear zinc catalysts in a dearomatization reaction has been developed. Catalytic asymmetric dearomatization [3+2] annulations of 2-nitrobenzofurans or 2-nitrobenzothiophenes with CF3 -containing N-unprotected isatin-derived azomethine ylides catalyzed by dinuclear zinc catalysts are realized with excellent diastereomer ratios (dr) of >20 : 1 and enantiomeric excess (ee) of up to 99 %. This protocol provides a practical, straightforward access to structurally diverse pyrrolidinyl spirooxindoles containing a 2,3-fused-dihydrobenzofuran (or dihydrobenzothiphene) moiety, and four contiguous stereocenters. Reactions can be performed on a gram scale. The absolute configuration of products is confirmed by X-ray single crystal structure analysis, and a possible mechanism is proposed.
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Affiliation(s)
- Peng Zhou
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan province 450000, P. R. China
| | - Yang Yi
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan province 450000, P. R. China
| | - Yuan-Zhao Hua
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan province 450000, P. R. China
| | - Shi-Kun Jia
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan province 450000, P. R. China
| | - Min-Can Wang
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan province 450000, P. R. China
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20
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Sharma P, Gupta R, Bansal RK. Recent advances in organocatalytic asymmetric aza-Michael reactions of amines and amides. Beilstein J Org Chem 2021; 17:2585-2610. [PMID: 34760026 PMCID: PMC8551878 DOI: 10.3762/bjoc.17.173] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 09/27/2021] [Indexed: 11/23/2022] Open
Abstract
Nitrogen-containing scaffolds are ubiquitous in nature and constitute an important class of building blocks in organic synthesis. The asymmetric aza-Michael reaction (aza-MR) alone or in tandem with other organic reaction(s) is an important synthetic tool to form new C-N bond(s) leading to developing new libraries of diverse types of bioactive nitrogen compounds. The synthesis and application of a variety of organocatalysts for accomplishing highly useful organic syntheses without causing environmental pollution in compliance with 'Green Chemistry" has been a landmark development in the recent past. Application of many of these organocatalysts has been extended to asymmetric aza-MR during the last two decades. The present article overviews the literature published during the last 10 years concerning the asymmetric aza-MR of amines and amides catalysed by organocatalysts. Both types of the organocatalysts, i.e., those acting through non-covalent interactions and those working through covalent bond formation have been applied for the asymmetric aza-MR. Thus, the review includes the examples wherein cinchona alkaloids, squaramides, chiral amines, phase-transfer catalysts and chiral bifunctional thioureas have been used, which activate the substrates through hydrogen bond formation. Most of these reactions are accompanied by high yields and enantiomeric excesses. On the other hand, N-heterocyclic carbenes and chiral pyrrolidine derivatives acting through covalent bond formation such as the iminium ions with the substrates have also been included. Wherever possible, a comparison has been made between the efficacies of various organocatalysts in asymmetric aza-MR.
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Affiliation(s)
- Pratibha Sharma
- Department of Chemistry, The IIS (deemed to be University), Jaipur 302 020, India
| | - Raakhi Gupta
- Department of Chemistry, The IIS (deemed to be University), Jaipur 302 020, India
| | - Raj Kumar Bansal
- Department of Chemistry, The IIS (deemed to be University), Jaipur 302 020, India
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21
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Song Y, Du D. Recent Advances in Catalytic Asymmetric Aza‐Michael Addition Triggered Cascade Reactions. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100624] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yong‐Xing Song
- College of Pharmacy Hebei University of Chinese Medicine Shijiazhuang 050200 Hebei Province People's Republic of China
| | - Da‐Ming Du
- School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 People's Republic of China
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22
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Wan Q, Xie JH, Zheng C, Yuan YF, You SL. Silver-Catalyzed Asymmetric Dearomatization of Electron-Deficient Heteroarenes via Interrupted Barton-Zard Reaction. Angew Chem Int Ed Engl 2021; 60:19730-19734. [PMID: 34196074 DOI: 10.1002/anie.202107767] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Indexed: 12/15/2022]
Abstract
Herein we report a catalytic asymmetric dearomatization reaction of electron-deficient heteroarenes with α-substituted isocyanoacetates through an interrupted Barton-Zard reaction. A range of optically active pyrrolo[3,4-b]indole derivatives was obtained in good yields (up to 97 %) with high stereoselectivities (up to >20:1 dr and 97 % ee), using a catalytic system consisting of a cinchona-derived amino-phosphine and silver oxide. This reaction features wide substrate scope and mild conditions, and provides a new strategy for developing asymmetric dearomatization reactions.
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Affiliation(s)
- Qian Wan
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China.,College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Jia-Hao Xie
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Yao-Feng Yuan
- College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
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23
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Saktura M, Skrzyńska A, Frankowski S, Wódka S, Albrecht Ł. Asymmetric Dearomative (3+2)-Cycloaddition Involving Nitro-Substituted Benzoheteroarenes under H-Bonding Catalysis. Molecules 2021; 26:molecules26164992. [PMID: 34443580 PMCID: PMC8401887 DOI: 10.3390/molecules26164992] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 08/08/2021] [Accepted: 08/12/2021] [Indexed: 02/06/2023] Open
Abstract
In our studies, the organocatalytic 1,3-dipolar cycloaddition between 2-nitrobenzofurans or 2-nitrobenzothiophene and N-2,2,2-trifluoroethyl-substituted isatin imines has been developed. The reaction has been realized by employing bifunctional organocatalysis, with the use of squaramide derivative being crucial for the stereochemical efficiency of the process. The usefulness of the cycloadducts obtained has been confirmed in selected transformations, including aromative and non-aromative removal of the nitro group.
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Affiliation(s)
| | - Anna Skrzyńska
- Correspondence: (A.S.); (Ł.A.); Tel.: +48-42-631-31-42 (ext. 23) (A.S.); +48-42-631-31-57 (Ł.A.)
| | | | | | - Łukasz Albrecht
- Correspondence: (A.S.); (Ł.A.); Tel.: +48-42-631-31-42 (ext. 23) (A.S.); +48-42-631-31-57 (Ł.A.)
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24
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Wan Q, Xie J, Zheng C, Yuan Y, You S. Silver‐Catalyzed Asymmetric Dearomatization of Electron‐Deficient Heteroarenes via Interrupted Barton–Zard Reaction. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107767] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Qian Wan
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- College of Chemistry Fuzhou University Fuzhou 350108 China
| | - Jia‐Hao Xie
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Yao‐Feng Yuan
- College of Chemistry Fuzhou University Fuzhou 350108 China
| | - Shu‐Li You
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
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25
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Dou P, Chen Y, You Y, Wang Z, Zhao J, Zhou M, Yuan W. Organocatalyzed Asymmetric Dearomative [3+2] Annulation of Electron‐Deficient 2‐Nitrobenzo Heteroarenes with 3‐Isothiocyanato Oxindoles. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100516] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Pei‐Hao Dou
- National Engineering Research Center of Chiral Drugs Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences Chengdu 610041 People's Republic of China
- Institute for Advanced Study Chengdu University Chengdu 610106 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Yan Chen
- National Engineering Research Center of Chiral Drugs Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences Chengdu 610041 People's Republic of China
- Institute for Advanced Study Chengdu University Chengdu 610106 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Yong You
- Institute for Advanced Study Chengdu University Chengdu 610106 People's Republic of China
| | - Zhen‐Hua Wang
- Institute for Advanced Study Chengdu University Chengdu 610106 People's Republic of China
| | - Jian‐Qiang Zhao
- Institute for Advanced Study Chengdu University Chengdu 610106 People's Republic of China
| | - Ming‐Qiang Zhou
- National Engineering Research Center of Chiral Drugs Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences Chengdu 610041 People's Republic of China
| | - Wei‐Cheng Yuan
- National Engineering Research Center of Chiral Drugs Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences Chengdu 610041 People's Republic of China
- Institute for Advanced Study Chengdu University Chengdu 610106 People's Republic of China
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26
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Wang Z, Fei Y, Tang C, Cui L, Shen J, Yin K, Lu S, Li J. Diastereoselective Synthesis of Tetracyclic Tetrahydroquinoline Derivative Enabled by Multicomponent Reaction of Isocyanide, Allenoate, and 2-Aminochalcone. Org Lett 2021; 23:4094-4098. [PMID: 33983753 DOI: 10.1021/acs.orglett.1c00912] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report here a multicomponent protocol to assemble several polycyclic dihydropyran-fused tetrahydroquinoline structures with excellent diastereoselectivity. This procedure employs simple feedstocks to accomplish a series of diverse structures, which is difficult to attain by traditional sequences.
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Affiliation(s)
- Zhishuang Wang
- Department of Chemistry, College of Sciences & Institute for Sustainable Energy, Shanghai University, 99 Shangda Road, Shanghai 200444, People's Republic of China
| | - Youwen Fei
- Department of Chemistry, College of Sciences & Institute for Sustainable Energy, Shanghai University, 99 Shangda Road, Shanghai 200444, People's Republic of China
| | - Chongrong Tang
- Department of Chemistry, College of Sciences & Institute for Sustainable Energy, Shanghai University, 99 Shangda Road, Shanghai 200444, People's Republic of China
| | - Lei Cui
- Department of Chemistry, College of Sciences & Institute for Sustainable Energy, Shanghai University, 99 Shangda Road, Shanghai 200444, People's Republic of China
| | - Jie Shen
- Department of Chemistry, College of Sciences & Institute for Sustainable Energy, Shanghai University, 99 Shangda Road, Shanghai 200444, People's Republic of China
| | - Kun Yin
- Anhui Province Key Laboratory for Degradation and Monitoring of Pollution of the Environment, School of Chemistry & Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, People's Republic of China
| | - Shanya Lu
- Department of Chemistry, College of Sciences & Institute for Sustainable Energy, Shanghai University, 99 Shangda Road, Shanghai 200444, People's Republic of China
| | - Jian Li
- Department of Chemistry, College of Sciences & Institute for Sustainable Energy, Shanghai University, 99 Shangda Road, Shanghai 200444, People's Republic of China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, People's Republic of China
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27
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Biswas A, Ghosh A, Shankhdhar R, Chatterjee I. Squaramide Catalyzed Asymmetric Synthesis of Five‐ and Six‐Membered Rings. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100181] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Anup Biswas
- Department of Chemistry Hooghly Women's College Hooghly West Bengal India
| | - Avisek Ghosh
- Department of Chemistry Indian Institute of Technology- Ropar India
| | - Rajat Shankhdhar
- Department of Chemistry Indian Institute of Technology- Ropar India
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28
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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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29
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Sarkar R, Mukhopadhyay C. Organocatalytic Synthesis of Heterocycles: A Brief Overview Covering Recent Aspects. CURRENT ORGANOCATALYSIS 2021. [DOI: 10.2174/2213337207999201029234021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The use of small organic molecules as organocatalysts in organic synthesis has been intensely
studied over the past decade. In this emerging field, considerable studies have led to the introduction
of various efficient organocatalyzed synthetic methods of carbon-carbon and carbon-
heteroatom bond formations. The use of these organocatalysts also showed environmentally benign
reaction conditions compared to the metal-catalyzed transformations. In this review, we paid
special attention to the most recent organocatalytic protocols reported for the synthesis of heterocycles.
The studies have been outlined, depending on the organocatalysts used as: (i) nitrogen-based
molecules as organocatalyst, (ii) NHCs as organocatalyst, and (iii) phosphorus-based molecules as
organocatalysts. The discussion intends to reveal the scope as well as the vitality of organocatalysis
in the area of heterocycle synthesis.
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Affiliation(s)
- Rajib Sarkar
- Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata-700009, India
| | - Chhanda Mukhopadhyay
- Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata-700009, India
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30
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Chen L, Zou YX, Zheng SL, Liu XY, Yang HL, Zhang J, Zeng Y, Duan L, Wen Z, Ni HL. Dearomative 1,6-addition of P(O)–H to in situ formed p-QM-like ion pairs from 2-benzofuryl-ols to C3-phosphinoyl hydrobenzofurans. Org Chem Front 2021. [DOI: 10.1039/d1qo00076d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report a dearomative C3-phosphorylation and a tandem C3-phosphorylation/aromatization of 2-benzofuryl-ols with P(O)–H species to afford C3-phosphinoyl hydrobenzofurans and benzofurans, respectively.
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31
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Zhao JQ, Zhou S, Wang ZH, You Y, Chen S, Liu XL, Zhou MQ, Yuan WC. Catalytic asymmetric dearomative [4 + 2] annulation of 2-nitrobenzofurans and 5 H-thiazol-4-ones: stereoselective construction of dihydrobenzofuran-bridged polycyclic skeletons. Org Chem Front 2021. [DOI: 10.1039/d1qo01061a] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
An organocatalytic asymmetric dearomative [4 + 2] annulation of 2-nitrobenzofurans and 5H-thiazol-4-ones is developed for the construction of dihydrobenzofuran-bridged polycyclic skeletons with good results.
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Affiliation(s)
- Jian-Qiang Zhao
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Shun Zhou
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Zhen-Hua Wang
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Yong You
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Shuang Chen
- Guizhou Engineering Center for Innovative Traditional Chinese Medicine and Ethnic Medicine, Guizhou University, Guiyang, Guizhou 550025, China
| | - Xiong-Li Liu
- Guizhou Engineering Center for Innovative Traditional Chinese Medicine and Ethnic Medicine, Guizhou University, Guiyang, Guizhou 550025, China
| | - Ming-Qiang Zhou
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Wei-Cheng Yuan
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
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32
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Cao D, Chen D, Chen G, Mo H, Xia Z, Li K, Yang J. Synthesis of Dibenzofurans Derivatives via Benzannulation of 2‐Nitrobenzofurans and Alkylidene Malononitriles. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000303] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Dongdong Cao
- School of Pharmaceutical and Materials Engineering Taizhou University 1139 Shifu Avenue Taizhou 318000 P. R. China
- Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
| | - Dingben Chen
- School of Pharmaceutical and Materials Engineering Taizhou University 1139 Shifu Avenue Taizhou 318000 P. R. China
| | - Gang Chen
- School of Pharmaceutical and Materials Engineering Taizhou University 1139 Shifu Avenue Taizhou 318000 P. R. China
| | - Hanjie Mo
- School of Pharmaceutical and Materials Engineering Taizhou University 1139 Shifu Avenue Taizhou 318000 P. R. China
| | - Zhijun Xia
- School of Pharmaceutical and Materials Engineering Taizhou University 1139 Shifu Avenue Taizhou 318000 P. R. China
| | - Kai‐bin Li
- School of Pharmaceutical and Materials Engineering Taizhou University 1139 Shifu Avenue Taizhou 318000 P. R. China
| | - Jianguo Yang
- School of Pharmaceutical and Materials Engineering Taizhou University 1139 Shifu Avenue Taizhou 318000 P. R. China
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33
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Yuan WC, Zhou XJ, Zhao JQ, Chen YZ, You Y, Wang ZH. Catalytic Enantioselective Dearomatization/Rearomatization of 2-Nitroindoles to Access 3-Indolyl-3′-Aryl-/Alkyloxindoles: Application in the Formal Synthesis of Cyclotryptamine Alkaloids. Org Lett 2020; 22:7088-7093. [DOI: 10.1021/acs.orglett.0c02350] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Wei-Cheng Yuan
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Xiao-Jian Zhou
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, China
| | - Jian-Qiang Zhao
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Yong-Zheng Chen
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, China
| | - Yong You
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Zhen-Hua Wang
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
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34
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Wang ZH, Shen LW, Xie KX, You Y, Zhao JQ, Yuan WC. Diastereoselective Construction of Cyclopropane-Fused Tetrahydroquinolines via a Sequential [4 + 2]/[2 + 1] Annulation Reaction. Org Lett 2020; 22:3114-3118. [PMID: 32255357 DOI: 10.1021/acs.orglett.0c00874] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A sequential [4 + 2]/[2 + 1] annulation of α-aryl vinylsulfoniums with 2-aminochalcones and 2-(2-aminobenzylidene)-1H-indene-1,3(2H)-dione is reported that affords a series of cyclopropane-fused tetrahydroquinolines. The salient features of this novel and practical transformation include high efficiency, transition-metal-free nature, operational simplicity, and outstanding functional group tolerance.
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Affiliation(s)
- Zhen-Hua Wang
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Li-Wen Shen
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Ke-Xin Xie
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Yong You
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Jian-Qiang Zhao
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Wei-Cheng Yuan
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China.,National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
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35
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Zhuo JR, Quan BX, Zhao JQ, Zhang ML, Chen YZ, Zhang XM, Yuan WC. Base-mediated [4+2] annulation of electron-deficient nitrobenzoheterocycles and α,α-dicyanoalkenes in water: Facile access to structurally diverse functionalized dibenzoheterocyclic compounds. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131115] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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36
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Li M, Wang T, Wang C. Multicomponent Reaction of Pyridinium Salts,
β
‐Nitrostyrenes and Ammonium Acetate under the DBU/Acetic Acid System: Access to 2,4,6‐Triarylpyridine Derivatives. ChemistrySelect 2020. [DOI: 10.1002/slct.202000387] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mingshuang Li
- School of Chemistry and Chemical EngineeringYangzhou University 180 Siwangting Street Yangzhou 225002 P. R. China
| | - Ting Wang
- School of Chemistry and Chemical EngineeringYangzhou University 180 Siwangting Street Yangzhou 225002 P. R. China
| | - Cunde Wang
- School of Chemistry and Chemical EngineeringYangzhou University 180 Siwangting Street Yangzhou 225002 P. R. China
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37
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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] [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. A simple and efficient method for the synthesis of benzo[4,5]thieno[2,3-c]pyrroles via dearomative [3 + 2] 1,3-dipolar cycloaddition reaction of nitrobenzothiophenes with an in situ-generated nonstabilized azomethine ylides have been developed.![]()
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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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38
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Ge ZZ, Yang L, You Y, Wang ZH, Xie KX, Zhou MQ, Zhao JQ, Yuan WC. Asymmetric dearomatization of 2-nitrobenzofurans by organocatalyzed one-step Michael addition to access 3,3′-disubstituted oxindoles. Chem Commun (Camb) 2020; 56:2586-2589. [DOI: 10.1039/c9cc09939e] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
An efficient enantioselective dearomatization of 2-nitrobenzofurans was realized by organocatalyzed one-step Michael addition to access structurally diverse 3,3′-disubstituted oxindoles.
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Affiliation(s)
- Zhen-Zhen Ge
- National Engineering Research Center of Chiral Drugs
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Lei Yang
- National Engineering Research Center of Chiral Drugs
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Yong You
- Institute for Advanced Study, Chengdu University
- Chengdu 610106
- China
| | - Zhen-Hua Wang
- Institute for Advanced Study, Chengdu University
- Chengdu 610106
- China
| | - Ke-Xin Xie
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu 610041
- China
| | - Ming-Qiang Zhou
- National Engineering Research Center of Chiral Drugs
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Jian-Qiang Zhao
- Institute for Advanced Study, Chengdu University
- Chengdu 610106
- China
| | - Wei-Cheng Yuan
- National Engineering Research Center of Chiral Drugs
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
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39
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Wang Z, Wang DC, Xie MS, Qu GR, Guo HM. Enantioselective Synthesis of Fused Polycyclic Tropanes via Dearomative [3 + 2] Cycloaddition Reactions of 2-Nitrobenzofurans. Org Lett 2019; 22:164-167. [PMID: 31868372 DOI: 10.1021/acs.orglett.9b04108] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A straight synthetic approach to fused polycyclic tropane scaffold formation through an asymmetric dearomatization cycloaddition process of 2-nitrobenzofurans with cyclic azomethine ylides was successfully developed. In the presence of a chiral copper complex, derived from Cu(OAc)2 and a diphosphine ligand, a series of fused polycyclic tropane derivatives were obtained in high yields (75-91%) with excellent enantioselectivities (90-98%). The utility of this method was showcased by the facile transformation of product.
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Affiliation(s)
- Zhen Wang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , Henan 453007 , China
| | - Dong-Chao Wang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , Henan 453007 , China
| | - Ming-Sheng Xie
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , Henan 453007 , China
| | - Gui-Rong Qu
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , Henan 453007 , China
| | - Hai-Ming Guo
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , Henan 453007 , China
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40
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Zhang CB, Dou PH, You Y, Wang ZH, Zhou MQ, Xu XY, Yuan WC. Organocatalytic asymmetric [3+2]-cycloaddition of 3-isothiocyanato oxindoles with 1,3,5-trisubstituted-hexahydro-1,3,5-triazines to access spiro-imidazolidinethione-oxindoles. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130571] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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41
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Chen XM, Lei CW, Yue DF, Zhao JQ, Wang ZH, Zhang XM, Xu XY, Yuan WC. Organocatalytic Asymmetric Dearomatization of 3-Nitroindoles and 3-Nitrobenzothiophenes via Thiol-Triggered Diastereo- and Enantioselective Double Michael Addition Reaction. Org Lett 2019; 21:5452-5456. [DOI: 10.1021/acs.orglett.9b01688] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xin-Meng Chen
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chuan-Wen Lei
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Deng-Feng Yue
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian-Qiang Zhao
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Zhen-Hua Wang
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Xiao-Mei Zhang
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Xiao-Ying Xu
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Wei-Cheng Yuan
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
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42
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Xing S, Xia H, Wang X, Wu D, Xu X, Su Y, Wang K, Zhu B, Guo J. Diastereoselective access to 2-aminoindanonesviathe rhodium(ii)-catalyzed tandem reaction involving O–H insertion and Michael addition. Org Chem Front 2019. [DOI: 10.1039/c9qo00765b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A rhodium(ii)-catalyzed tandem reaction involving O–H insertion ofN-sulfonyl 1,2,3-triazoles and Michael addition has been described. A series of 2-amino-1-indanones were afforded in acceptable to good yields with high diastereoselectivities.
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Affiliation(s)
- Siyang Xing
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Hanyu Xia
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Xin Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Die Wu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Xinrui Xu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Yunran Su
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Kui Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Bolin Zhu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Junshuo Guo
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University)
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
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43
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Yang XH, Li JP, Wang DC, Xie MS, Qu GR, Guo HM. Enantioselective dearomative [3+2] cycloaddition of 2-nitrobenzofurans with aldehyde-derived Morita–Baylis–Hillman carbonates. Chem Commun (Camb) 2019; 55:9144-9147. [DOI: 10.1039/c9cc04542b] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The phosphine-catalyzed asymmetric dearomative [3+2] cycloaddition of 2-nitrobenzofurans with aldehyde-derived MBH carbonates or allenoates was developed.
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Affiliation(s)
- Xin-He Yang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- School of Chemistry and Chemical Engineering
| | - Jian-Ping Li
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- School of Chemistry and Chemical Engineering
| | - Dong-Chao Wang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- School of Chemistry and Chemical Engineering
| | - Ming-Sheng Xie
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- School of Chemistry and Chemical Engineering
| | - Gui-Rong Qu
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- School of Chemistry and Chemical Engineering
| | - Hai-Ming Guo
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- School of Chemistry and Chemical Engineering
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44
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Zhao JQ, Yang L, You Y, Wang ZH, Xie KX, Zhang XM, Xu XY, Yuan WC. Phosphine-catalyzed dearomative (3 + 2) annulation of 2-nitrobenzofurans and nitrobenzothiophenes with allenoates. Org Biomol Chem 2019; 17:5294-5304. [DOI: 10.1039/c9ob00775j] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient Ph2PMe-catalyzed dearomative (3 + 2) annulation of 2-nitrobenzofurans, 2-nitrobenzothiophenes, and 3-nitrobenzothiophenes with allenoates is reported.
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Affiliation(s)
- Jian-Qiang Zhao
- Institute for Advanced Study
- Chengdu University
- Chengdu 610106
- China
| | - Lei Yang
- National Engineering Research Center of Chiral Drugs
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Yong You
- Institute for Advanced Study
- Chengdu University
- Chengdu 610106
- China
| | - Zhen-Hua Wang
- Institute for Advanced Study
- Chengdu University
- Chengdu 610106
- China
| | - Ke-Xin Xie
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu 610041
- China
| | - Xiao-Mei Zhang
- National Engineering Research Center of Chiral Drugs
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Xiao-Ying Xu
- National Engineering Research Center of Chiral Drugs
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Wei-Cheng Yuan
- National Engineering Research Center of Chiral Drugs
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
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