1
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Das T. Desymmetrization of Cyclopentene‐1,3‐Diones via Alkylation, Arylation, Amidation and Cycloaddition Reactions. ChemistrySelect 2020. [DOI: 10.1002/slct.202003341] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Tapas Das
- Department of Chemistry NIT Jamshedpur Jamshedpur 831014 India
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2
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Controlled and diastereoselective synthesis of α-(3-hydroxy-2 oxoindolin-3-yl)-β-aminopropanoates. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.03.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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Wang M, Tseng P, Chi W, Suresh S, Edukondalu A, Chen Y, Lin W. Diversity‐Oriented Synthesis of Spirocyclohexene Indane‐1,3‐diones and Coumarin‐Fused Cyclopentanes via an Organobase‐Controlled Cascade Reaction. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000597] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Min Wang
- Department of ChemistryNational Taiwan Normal University, 88, Sec. 4 Tingchow Road Taipei 11677 Taiwan
| | - Ping‐Yao Tseng
- Department of ChemistryNational Taiwan Normal University, 88, Sec. 4 Tingchow Road Taipei 11677 Taiwan
| | - Woei‐Jye Chi
- Department of ChemistryNational Taiwan Normal University, 88, Sec. 4 Tingchow Road Taipei 11677 Taiwan
| | - Sundaram Suresh
- Department of ChemistryNational Taiwan Normal University, 88, Sec. 4 Tingchow Road Taipei 11677 Taiwan
| | - Athukuri Edukondalu
- Department of ChemistryNational Taiwan Normal University, 88, Sec. 4 Tingchow Road Taipei 11677 Taiwan
| | - Yi‐Ru Chen
- Department of ChemistryNational Taiwan Normal University, 88, Sec. 4 Tingchow Road Taipei 11677 Taiwan
| | - Wenwei Lin
- Department of ChemistryNational Taiwan Normal University, 88, Sec. 4 Tingchow Road Taipei 11677 Taiwan
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4
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Fofana M, Dudognon Y, Bertrand L, Constantieux T, Rodriguez J, Ndiaye I, Bonne D, Bugaut X. Enantioselective Organocatalyzed Michael Additions of Nitroalkanes to 4-Arylidenedihydrofuran-2,3-diones and 4-Arylidenepyrrolidine-2,3-diones. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000460] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Mouhamadou Fofana
- Centrale Marseille, ISM2; Aix Marseille Univ, CNRS; Marseille France
- Département de Chimie; Faculté des Sciences et Techniques; Université Cheikh Anta Diop; Dakar Sénégal
| | - Yohan Dudognon
- Centrale Marseille, ISM2; Aix Marseille Univ, CNRS; Marseille France
| | - Laura Bertrand
- Centrale Marseille, ISM2; Aix Marseille Univ, CNRS; Marseille France
| | | | - Jean Rodriguez
- Centrale Marseille, ISM2; Aix Marseille Univ, CNRS; Marseille France
| | - Ibrahima Ndiaye
- Département de Chimie; Faculté des Sciences et Techniques; Université Cheikh Anta Diop; Dakar Sénégal
| | - Damien Bonne
- Centrale Marseille, ISM2; Aix Marseille Univ, CNRS; Marseille France
| | - Xavier Bugaut
- Centrale Marseille, ISM2; Aix Marseille Univ, CNRS; Marseille France
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5
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Xu K, Chen W, Chen X, Wang B, Huang J, Tian X. Organocatalytic asymmetric Friedel–Crafts alkylation/hemiketalization/lactonization cascade reactions: highly enantioselective synthesis of furo[2,3-b]benzofuranones. Org Chem Front 2020. [DOI: 10.1039/d0qo00475h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A highly diastereo- and enantioselective organocatalytic Friedel–Crafts alkylation/hemiketalization/lactonization cascade reaction generating furo[2,3-b]benzofuranones in good to excellent yields with high stereoselectivities.
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Affiliation(s)
- Kunhua Xu
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease
- School of Pharmaceutical Sciences & The Fifth Affiliated Hospital
- Guangzhou Medical University
- Guangzhou
- China
| | - Wenming Chen
- Department of Pharmaceutical Production Center
- The First Affiliated Hospital of Hunan University of Chinese Medicine
- Changsha
- China
| | - Xu Chen
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease
- School of Pharmaceutical Sciences & The Fifth Affiliated Hospital
- Guangzhou Medical University
- Guangzhou
- China
| | - Biao Wang
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease
- School of Pharmaceutical Sciences & The Fifth Affiliated Hospital
- Guangzhou Medical University
- Guangzhou
- China
| | - Jun Huang
- Sino-French Hoffmann Institute
- Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology
- The Second Affiliated Hospital
- Guangzhou Medical University
- Guangzhou
| | - Xu Tian
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease
- School of Pharmaceutical Sciences & The Fifth Affiliated Hospital
- Guangzhou Medical University
- Guangzhou
- China
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6
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Sato R, Tosaka T, Masu H, Arai T. Catalytic Asymmetric Synthesis of Chiral Bis(indolyl)methanes Using a Ts-PyBidine-Nickel Complex. J Org Chem 2019; 84:14248-14257. [PMID: 31553607 DOI: 10.1021/acs.joc.9b02006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A chiral tosyl-substituted bis(imidazolidine)pyridine Ts-PyBidine-nickel complex was an efficient catalyst for Friedel-Crafts reaction of indoles with methylene indolinones to give bisindolylmethane compounds having differently oxidized indole units with high enantioselectivities. Alkylation of the products proceeded smoothly in a highly diastereoselective manner, providing an all-carbon quaternary carbon center without significant loss of enantiomeric excess.
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Affiliation(s)
- Ryo Sato
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Research Innovation Center (CIRIC), and Department of Chemistry, Graduate School of Science , Chiba University , 1-33 Yayoi , Inage, Chiba 263-8522 , Japan
| | - Takuya Tosaka
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Research Innovation Center (CIRIC), and Department of Chemistry, Graduate School of Science , Chiba University , 1-33 Yayoi , Inage, Chiba 263-8522 , Japan
| | - Hyuma Masu
- Center for Analytical Instrumentation , Chiba University , 1-33 Yayoi , Inage, Chiba 263-8522 , Japan
| | - Takayoshi Arai
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Research Innovation Center (CIRIC), and Department of Chemistry, Graduate School of Science , Chiba University , 1-33 Yayoi , Inage, Chiba 263-8522 , Japan
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7
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Yang ZT, Zhao J, Yang WL, Deng WP. Enantioselective Construction of CF3-Containing Spirooxindole γ-Lactones via Organocatalytic Asymmetric Michael/Lactonization. Org Lett 2019; 21:1015-1020. [DOI: 10.1021/acs.orglett.8b04039] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhong-Tao Yang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Jianhong Zhao
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Wu-Lin Yang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Wei-Ping Deng
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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8
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Fused electron deficient semiconducting polymers for air stable electron transport. Nat Commun 2018; 9:416. [PMID: 29379022 PMCID: PMC5789062 DOI: 10.1038/s41467-018-02852-6] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 01/03/2018] [Indexed: 12/13/2022] Open
Abstract
Conventional semiconducting polymer synthesis typically involves transition metal-mediated coupling reactions that link aromatic units with single bonds along the backbone. Rotation around these bonds contributes to conformational and energetic disorder and therefore potentially limits charge delocalisation, whereas the use of transition metals presents difficulties for sustainability and application in biological environments. Here we show that a simple aldol condensation reaction can prepare polymers where double bonds lock-in a rigid backbone conformation, thus eliminating free rotation along the conjugated backbone. This polymerisation route requires neither organometallic monomers nor transition metal catalysts and offers a reliable design strategy to facilitate delocalisation of frontier molecular orbitals, elimination of energetic disorder arising from rotational torsion and allowing closer interchain electronic coupling. These characteristics are desirable for high charge carrier mobilities. Our polymers with a high electron affinity display long wavelength NIR absorption with air stable electron transport in solution processed organic thin film transistors. Semiconducting polymers are usually prepared by transition metal mediated coupling reactions that cause problems for sustainability and biological applications. Here the authors synthesise fused electron deficient polymers that are air stable and have high electron affinities, via metal free aldol polymerisation reactions.
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9
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Xiao M, Xu D, Liang W, Wu W, Chan ASC, Zhao J. Organocatalytic Enantioselective Friedel-Crafts Alkylation/Lactonization Reaction of Hydroxyindoles with Methyleneoxindoles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701089] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Mengjie Xiao
- Guangzhou Institutes of Biomedicine and Health; Chinese Academy of Sciences; Guangzhou 510530 Peoples Republic of China
- University of Chinese Academy of Sciences; Beijing 100049 People's Republic of China
| | - Dengfeng Xu
- Guangzhou Institutes of Biomedicine and Health; Chinese Academy of Sciences; Guangzhou 510530 Peoples Republic of China
| | - Weihong Liang
- Guangzhou Institutes of Biomedicine and Health; Chinese Academy of Sciences; Guangzhou 510530 Peoples Republic of China
- University of Chinese Academy of Sciences; Beijing 100049 People's Republic of China
| | - Wenyu Wu
- University of Chinese Academy of Sciences; Beijing 100049 People's Republic of China
| | - Albert S. C. Chan
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 People's Republic of China
| | - Junling Zhao
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 People's Republic of China
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10
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Non-Covalent Organocatalyzed Domino Reactions Involving Oxindoles: Recent Advances. Molecules 2017; 22:molecules22101636. [PMID: 28961217 PMCID: PMC6151767 DOI: 10.3390/molecules22101636] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 09/25/2017] [Accepted: 09/26/2017] [Indexed: 11/17/2022] Open
Abstract
The ubiquitous presence of spirooxindole architectures with several functionalities and stereogenic centers in bioactive molecules has been appealing for the development of novel methodologies seeking their preparation in high yields and selectivities. Expansion and refinement in the field of asymmetric organocatalysis have made possible the development of straightforward strategies that address these two requisites. In this review, we illustrate the current state-of-the-art in the field of spirooxindole synthesis through the use of non-covalent organocatalysis. We aim to provide a concise overview of very recent methods that allow to the isolation of unique, densely and diversified spirocyclic oxindole derivatives with high structural diversity via the use of cascade, tandem and domino processes.
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11
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Jiang L, Li YG, Li H, Yuan MW, Chuan YM, Li HL, Yuan ML. Catalyst-free synthesis of 3-alkenyloxindoles from isatin-derived Morita–Baylis–Hillman carbonates. JOURNAL OF CHEMICAL RESEARCH 2017. [DOI: 10.3184/174751917x14878812592652] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A variety of biologically and synthetically useful 3-alkenyloxindoles were rapidly synthesised via an SN2′-type allylic substitution reaction of isatin-derived Morita–Baylis–Hillman carbonates with sodium sulfinates. The syntheses were conducted under catalyst-free reaction conditions and good to excellent product yields (up to 96%) and Z/E selectivities (up to >20:1) were obtained.
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Affiliation(s)
- Lin Jiang
- School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
- Engineering Research Centre of Biopolymer Functional Materials of Yunnan, Kunming 650500, P.R. China
| | - Yong-Gen Li
- School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
| | - Hang Li
- School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
| | - Ming-Wei Yuan
- Engineering Research Centre of Biopolymer Functional Materials of Yunnan, Kunming 650500, P.R. China
| | - Yong-Ming Chuan
- School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
| | - Hong-Li Li
- School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
- Engineering Research Centre of Biopolymer Functional Materials of Yunnan, Kunming 650500, P.R. China
| | - Ming-Long Yuan
- School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
- Engineering Research Centre of Biopolymer Functional Materials of Yunnan, Kunming 650500, P.R. China
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12
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Sharma N, Peddinti RK. BF 3·OEt 2 Mediated Regioselective Reaction of Electron-Rich Arenes with 3-Ylidene Oxindoles. J Org Chem 2017; 82:918-924. [PMID: 27992723 DOI: 10.1021/acs.joc.6b02395] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A BF3·OEt2 mediated novel and regioselective protocol for the construction of a C-C bond between 3-ylidene oxindoles and electron-rich arenes has been successfully accomplished. The reaction was compatible with a wide variety of electron-rich arenes. A cascade reaction of 3-ylidene oxindoles with phenols and β-naphthol resulted in 2,3-difunctionalized benzofuran and lactone bearing indoline-2-one scaffolds under same conditions.
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Affiliation(s)
- Nitika Sharma
- Department of Chemistry, Indian Institute of Technology , Roorkee-247667, Uttarakhand, India
| | - Rama Krishna Peddinti
- Department of Chemistry, Indian Institute of Technology , Roorkee-247667, Uttarakhand, India
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13
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Ohmatsu K, Furukawa Y, Kiyokawa M, Ooi T. Diastereo- and enantioselective phase-transfer alkylation of 3-substituted oxindoles with racemic secondary alkyl halides. Chem Commun (Camb) 2017; 53:13113-13116. [DOI: 10.1039/c7cc07122a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A catalytic asymmetric alkylation of fully substituted enolates with racemic, non-activated secondary alkyl halides is described.
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Affiliation(s)
- Kohsuke Ohmatsu
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8601
- Japan
| | - Yukino Furukawa
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8601
- Japan
| | - Mari Kiyokawa
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8601
- Japan
| | - Takashi Ooi
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8601
- Japan
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14
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Emma MG, Lombardo M, Trombini C, Quintavalla A. The Organocatalytic α-Fluorination of Chiral γ-Nitroaldehydes: the Challenge of Facing the Construction of a Quaternary Fluorinated Stereocenter. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600378] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Marco Giuseppe Emma
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Marco Lombardo
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Claudio Trombini
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Arianna Quintavalla
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
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15
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Cerisoli L, Lombardo M, Trombini C, Quintavalla A. The First Enantioselective Organocatalytic Synthesis of 3-Spiro-α-Alkylidene-γ-Butyrolactone Oxindoles. Chemistry 2016; 22:3865-72. [DOI: 10.1002/chem.201504157] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Indexed: 01/04/2023]
Affiliation(s)
- Lucia Cerisoli
- Department of Chemistry ''G. Ciamician''; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Marco Lombardo
- Department of Chemistry ''G. Ciamician''; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Claudio Trombini
- Department of Chemistry ''G. Ciamician''; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Arianna Quintavalla
- Department of Chemistry ''G. Ciamician''; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
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16
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Jiang H, Jie H, Li J. Scandium triflate-catalyzed selective ring opening and rearrangement reaction of spiro-epoxyoxindole and carbonyl compounds. RSC Adv 2016. [DOI: 10.1039/c6ra21264f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Scandium triflate-catalyzed reactions between spiro-epoxyoxindole and carbonyl compounds have been disclosed. Furthermore, an unprecedented rearrangement takes place to yield alkylidene oxindoles when aromatic aldehydes are used as carbonyl components.
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Affiliation(s)
- Hui Jiang
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- University of Electronic Science and Technology of China
- Chengdu 610054
- P. R. China
- Department of Applied Chemistry
| | - Haohua Jie
- Department of Chemistry
- Innovative Drug Research Center
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Jian Li
- Department of Chemistry
- Innovative Drug Research Center
- Shanghai University
- Shanghai 200444
- P. R. China
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17
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Kumari P, Nandi S, Kumar G, Khan NH, Kureshy RI, Abdi SHR, Suresh E, Bajaj HC. Construction of highly enantioselective spiro-oxindole derivatives with fused chromene via organocascade catalysis. RSC Adv 2016. [DOI: 10.1039/c6ra06812j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A first highly enantioselective addition of naphthols and sesamol to indolylidene cyanoacetate derived from isatins was carried out in the presence of bi-functional quinine thiourea as organocatalyst.
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Affiliation(s)
- Prathibha Kumari
- Inorganic Materials and Catalysis Division
- Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar
- India
- Academy of Scientific & Innovative Research (AcSIR)
| | - Sekhar Nandi
- Inorganic Materials and Catalysis Division
- Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar
- India
- Academy of Scientific & Innovative Research (AcSIR)
| | - Gaurav Kumar
- Inorganic Materials and Catalysis Division
- Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar
- India
- Academy of Scientific & Innovative Research (AcSIR)
| | - Noorul H. Khan
- Inorganic Materials and Catalysis Division
- Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar
- India
- Academy of Scientific & Innovative Research (AcSIR)
| | - Rukhsana I. Kureshy
- Inorganic Materials and Catalysis Division
- Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar
- India
- Academy of Scientific & Innovative Research (AcSIR)
| | - Sayed H. R. Abdi
- Inorganic Materials and Catalysis Division
- Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar
- India
- Academy of Scientific & Innovative Research (AcSIR)
| | - E. Suresh
- Academy of Scientific & Innovative Research (AcSIR)
- India
- Analytical Division and Centralized Instrument Facility
- Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar
| | - Hari C. Bajaj
- Inorganic Materials and Catalysis Division
- Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar
- India
- Academy of Scientific & Innovative Research (AcSIR)
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18
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Ren X, He C, Feng Y, Chai Y, Yao W, Chen W, Zhang S. Novel ferrocene-based bifunctional amine-thioureas for asymmetric Michael addition of acetylacetone to nitroolefins. Org Biomol Chem 2015; 13:5054-60. [PMID: 25832649 DOI: 10.1039/c5ob00298b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
An efficient method was developed to synthesize ferrocene-based bifunctional amine-thioureas bearing multiple hydrogen-bonding donors. Asymmetric Michael addition of acetylacetone to nitroolefins catalyzed by these novel bifunctional catalysts affords the Michael adducts in high yield and moderate to excellent enantioselectivities. Multiple hydrogen-bonds play an important role in accelerating the reaction.
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Affiliation(s)
- Xiaochen Ren
- Key Laboratory of Applied Surface and Colloid Chemistry, School of Chemistry and Chemical Engineering Shaanxi Normal University, Xi'an, Shaanxi 710062, P.R. China.
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19
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Zhou MJ, Li Y, Dang L. Theoretical Studies on the Mechanism of the Michael Addition Reaction Catalyzed by a Thiourea-Cinchona-Amine: Triple Activation. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500183] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mei-Juan Zhou
- Department of Chemistry; South University of Science and Technology of China; Shenzhen 518055 P. R. China
| | - Yun Li
- Department of Chemistry; South University of Science and Technology of China; Shenzhen 518055 P. R. China
| | - Li Dang
- Department of Chemistry; South University of Science and Technology of China; Shenzhen 518055 P. R. China
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20
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Sar D, Bag R, Bhattacharjee D, Deka RC, Punniyamurthy T. Iron(III)-Mediated Radical Nitration of Bisarylsulfonyl Hydrazones: Synthesis of Bisarylnitromethyl Sulfones. J Org Chem 2015; 80:6776-83. [DOI: 10.1021/acs.joc.5b00820] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dinabandhu Sar
- Department
of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Raghunath Bag
- Department
of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
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21
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Monari M, Montroni E, Nitti A, Lombardo M, Trombini C, Quintavalla A. Highly stereoselective [4+2] and [3+2] spiroannulations of 2-(2-oxoindolin-3-ylidene)acetic esters catalyzed by bifunctional thioureas. Chemistry 2015; 21:11038-49. [PMID: 26032428 DOI: 10.1002/chem.201500676] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Indexed: 11/11/2022]
Abstract
A new Michael-Michael cascade reaction between 2-(2-oxoindolin-3-ylidene)acetic esters 1 and nitroenoates 2, catalyzed by bifunctional thioureas, is investigated. The combination of the two Michael reactions results in a novel and facile [4+2] or [3+2] spiroannulation process, which is characterized by the following features: 1) two carbon-carbon bonds and four stereocenters, including a quaternary spiro carbon, are formed under mild conditions; 2) an unprecedented and stereochemically defined substitution pattern on the spirocarbocyclic unit is obtained; 3) the double-bond configuration of the donor-acceptor nitroenoate 2 determines the absolute configuration of the spiro center, whereas the remaining stereocenters are formed under control of the catalyst. The effect on the final stereochemical outcome of structural variations of each starting material, catalyst, and experimental conditions is analyzed in detail. In particular, the use of specifically designed chiral nitroenoates enables diverse polyfunctional spirocyclohexane derivatives containing six consecutive stereogenic centers to be constructed. To our knowledge, this is the first asymmetric organocatalytic strategy enabling both five- and six-membered β-nitro spirocarbocyclic oxindoles.
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Affiliation(s)
- Magda Monari
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Elisa Montroni
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Andrea Nitti
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Marco Lombardo
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Claudio Trombini
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Arianna Quintavalla
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy).
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22
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Yao Q, Wang Z, Zhang Y, Liu X, Lin L, Feng X. N,N′-Dioxide/Gadolinium(III)-Catalyzed Asymmetric Conjugate Addition of Nitroalkanes to α,β-Unsaturated Pyrazolamides. J Org Chem 2015; 80:5704-12. [DOI: 10.1021/acs.joc.5b00649] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qian Yao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Zhen Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Yuheng Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, People’s Republic of China
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23
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Han B, Huang W, Ren W, He G, Wang JH, Peng C. Asymmetric Synthesis of Cyclohexane-Fused Drug-Like Spirocyclic Scaffolds Containing Six Contiguous Stereogenic CentersviaOrganocatalytic Cascade Reactions. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201400764] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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24
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Manna MS, Mukherjee S. Organocatalytic Enantioselective Formal C(sp2)–H Alkylation. J Am Chem Soc 2015; 137:130-3. [DOI: 10.1021/ja5117556] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Madhu Sudan Manna
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Santanu Mukherjee
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
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25
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Sun QS, Chen XY, Zhu H, Lin H, Sun XW, Lin GQ. Asymmetric synthesis of poly-substituted spirocyclohexane oxindole via a squaramide catalyzed cascade Michael–Michael–aldol sequence. Org Chem Front 2015. [DOI: 10.1039/c4qo00299g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Asymmetric synthesis of spirocyclohexane oxindoles bearing six contiguous stereocenters has been achieved in good yields (up to 85%) with excellent stereoselectivities (>20 : 1 dr, >99% ee).
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Affiliation(s)
| | - Xiao-Yang Chen
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Hua Zhu
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Hua Lin
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Xing-Wen Sun
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Guo-Qiang Lin
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
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26
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Bai Z, Ji L, Ge Z, Wang X, Li R. Asymmetric Michael addition reactions of nitroalkanes to 2-furanones catalyzed by bifunctional thiourea catalysts. Org Biomol Chem 2015; 13:5363-6. [DOI: 10.1039/c5ob00708a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first bifunctional thiourea catalyzed asymmetric Michael addition reactions of nitroalkanes to 2-furanones are described.
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Affiliation(s)
- Zhushuang Bai
- State Key Laboratory of Nature and Biomimtic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Ling Ji
- State Key Laboratory of Nature and Biomimtic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Zemei Ge
- State Key Laboratory of Nature and Biomimtic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Xin Wang
- State Key Laboratory of Nature and Biomimtic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Runtao Li
- State Key Laboratory of Nature and Biomimtic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
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27
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Sarraf D, Richy N, Vidal J. Synthesis of Lactams by Isomerization of Oxindoles Substituted at C-3 by an ω-Amino Chain. J Org Chem 2014; 79:10945-55. [DOI: 10.1021/jo501978j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Daad Sarraf
- Chimie et photonique moléculaires,
Institut des Sciences Chimiques de Rennes, Université de Rennes 1, CNRS-UMR
6226, Campus de Beaulieu, 35042 Rennes Cedex, France
| | - Nicolas Richy
- Chimie et photonique moléculaires,
Institut des Sciences Chimiques de Rennes, Université de Rennes 1, CNRS-UMR
6226, Campus de Beaulieu, 35042 Rennes Cedex, France
| | - Joëlle Vidal
- Chimie et photonique moléculaires,
Institut des Sciences Chimiques de Rennes, Université de Rennes 1, CNRS-UMR
6226, Campus de Beaulieu, 35042 Rennes Cedex, France
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28
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Richard M, Felten AS, Didierjean C, Ruiz-Lopez M, Chapleur Y, Pellegrini-Moïse N. Toward BisC,C-Glycosyl Compounds and Anomeric γ-Glycoamino Acids through Michael Addition Reaction of Nitromethane onZ/EPush-Pull Sugar Olefins. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402958] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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29
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Yao W, Chen M, Liu X, Jiang R, Zhang S, Chen W. Ferrocene as a scaffold for effective bifunctional amine–thiourea organocatalysts. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00199k] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This work demonstrates that ferrocene could be an excellent scaffold for chiral organocatalysts.
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Affiliation(s)
- Wei Yao
- School of Pharmacy
- Fourth Military Medical University
- Xi'an, PR China
| | - Ming Chen
- School of Pharmacy
- Fourth Military Medical University
- Xi'an, PR China
| | - Xueying Liu
- School of Pharmacy
- Fourth Military Medical University
- Xi'an, PR China
| | - Ru Jiang
- School of Pharmacy
- Fourth Military Medical University
- Xi'an, PR China
| | - Shengyong Zhang
- School of Pharmacy
- Fourth Military Medical University
- Xi'an, PR China
| | - Weiping Chen
- School of Pharmacy
- Fourth Military Medical University
- Xi'an, PR China
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