1
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Höthker S, Plato A, Grimme S, Qu ZW, Gansäuer A. Stereoconvergent Approach to the Enantioselective Construction of α-Quaternary Alcohols by Radical Epoxide Allylation. Angew Chem Int Ed Engl 2024; 63:e202405911. [PMID: 38669602 DOI: 10.1002/anie.202405911] [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: 03/28/2024] [Revised: 04/19/2024] [Accepted: 04/19/2024] [Indexed: 04/28/2024]
Abstract
We describe a highly stereoconvergent radical epoxide allylation towards diastereomerically and enantiomerically enriched α-quaternary alcohols in two steps from olefins. Our approach combines the stereospecifity and enantioselectivity of the Shi epoxidation with the unprecedented Ti(III)-promoted intramolecular radical group transfer allylation of epoxides. A directional isomerization step via configurationally labile radical intermediates enables the selective preparation of all-carbon quaternary stereocenters in a unique fashion.
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Affiliation(s)
- Sebastian Höthker
- Kekulé-Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Straße 1, 53121, Bonn, Germany
| | - Annika Plato
- Kekulé-Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Straße 1, 53121, Bonn, Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Universität Bonn, Beringstraße 4, 53115, Bonn, Germany
| | - Zheng-Wang Qu
- Mulliken Center for Theoretical Chemistry, Universität Bonn, Beringstraße 4, 53115, Bonn, Germany
| | - Andreas Gansäuer
- Kekulé-Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Straße 1, 53121, Bonn, Germany
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2
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Saeed R, Sakla AP, Shankaraiah N. An update on the progress of cycloaddition reactions of 3-methyleneindolinones in the past decade: versatile approaches to spirooxindoles. Org Biomol Chem 2021; 19:7768-7791. [PMID: 34549231 DOI: 10.1039/d1ob01176f] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cycloaddition reactions are of great interest due to their potential and rapid construction of optically enriched spiro-cyclic products. 3-Methyleneindolinones have been proven to be a valuable precursor in cycloaddition reactions for the construction of diverse 3,3'-spirocyclic oxindoles. Their versatile reactivity has provided a new forum for the development of a variety of building blocks and synthetic compounds, including bioactive molecules. Herein, significant accomplishments in the cycloaddition reactions of 3-methyleneindolinones for the synthesis of spirooxindoles have been summarised and elaborated. The review is outlined according to the type of cycloaddition such as [2 + 1], [2 + 2], [3 + 2], [4 + 2] and [5 + 2] cycloaddition reactions.
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Affiliation(s)
- Ruqaiya Saeed
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad-500037, India.
| | - Akash P Sakla
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad-500037, India.
| | - Nagula Shankaraiah
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad-500037, India.
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3
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Kitagaki S, Shimo E, Takeda S, Fukai R, Kojima N, Yoshioka S, Takenaga N, Yoshida K. Planar Chiral [2.2]Paracyclophane-Based Bis(thiourea)-Catalyzed Highly Diastereo- and Enantioselective Michael Addition Reaction of Nitroethane to Nitrostyrenes. HETEROCYCLES 2021. [DOI: 10.3987/com-20-s(k)58] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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4
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Volpe C, Meninno S, Roselli A, Mancinelli M, Mazzanti A, Lattanzi A. Nitrone/Imine Selectivity Switch in Base‐Catalysed Reaction of Aryl Acetic Acid Esters with Nitrosoarenes: Joint Experimental and Computational Study. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000855] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Chiara Volpe
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II, 132 84084 Fisciano Italy
| | - Sara Meninno
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II, 132 84084 Fisciano Italy
| | - Angelo Roselli
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II, 132 84084 Fisciano Italy
| | - Michele Mancinelli
- Department of Industrial Chemistry “Toso Montanari” University of Bologna Viale Risorgimento 4 40136 Bologna Italy
| | - Andrea Mazzanti
- Department of Industrial Chemistry “Toso Montanari” University of Bologna Viale Risorgimento 4 40136 Bologna Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II, 132 84084 Fisciano Italy
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5
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Wang J, Zhao L, Rong Q, Lv C, Lu Y, Pan X, Zhao L, Hu L. Asymmetric Synthesis of 3,3'-Tetrahydrofuryl Spirooxindoles via Palladium-Catalyzed [3+2] Cycloadditions of Methyleneindolinones with Vinylethylene Carbonates. Org Lett 2020; 22:5833-5838. [PMID: 32790422 DOI: 10.1021/acs.orglett.0c01920] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A palladium-catalyzed asymmetric [3+2] cycloaddition reaction of methyleneindolinones with vinylethylene carbonates has been successfully developed, which provides a highly efficient method for the synthesis of structurally diverse 3,3'-tetrahydrofuryl spirooxindoles in high yields (≤99%) with excellent stereoselectivities (>20:1 dr, ≤99% ee). Furthermore, this methodology shows a wide substrate scope and high utility in diversity-oriented synthesis.
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Affiliation(s)
- Junwei Wang
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, State Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Lei Zhao
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, State Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Quanjin Rong
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, State Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Cheng Lv
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, State Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Yu Lu
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, State Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Xiang Pan
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, State Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Lin Zhao
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, State Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Lihong Hu
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, State Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
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6
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Xu PW, Yu JS, Chen C, Cao ZY, Zhou F, Zhou J. Catalytic Enantioselective Construction of Spiro Quaternary Carbon Stereocenters. ACS Catal 2019. [DOI: 10.1021/acscatal.8b03694] [Citation(s) in RCA: 175] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Peng-Wei Xu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, P. R. China
| | - Jin-Sheng Yu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, P. R. China
| | - Chen Chen
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, P. R. China
| | - Zhong-Yan Cao
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, P. R. China
| | - Feng Zhou
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, P. R. China
| | - Jian Zhou
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, P. R. China
- Shanghai Key Laboratory of Green Chemistry and Chemical Process, East China Normal University, Shanghai 200062, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
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7
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Ding A, Meazza M, Guo H, Yang JW, Rios R. New development in the enantioselective synthesis of spiro compounds. Chem Soc Rev 2018; 47:5946-5996. [DOI: 10.1039/c6cs00825a] [Citation(s) in RCA: 217] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this review we summarize the latest developments in the enantioselective synthesis of spirocompounds. The most important organometallic and organocatalytic methodologies are highlighted.
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Affiliation(s)
- Aishun Ding
- Department of Chemistry
- Fudan University
- Shanghai
- People's Republic of China
| | - Marta Meazza
- School of Chemistry. University of Southampton. Highfield Campus
- Southampton
- UK
| | - Hao Guo
- Department of Chemistry
- Fudan University
- Shanghai
- People's Republic of China
| | - Jung Woon Yang
- Department of Energy Science
- Sungkyunkwan University
- Suwon 16419
- South Korea
| | - Ramon Rios
- School of Chemistry. University of Southampton. Highfield Campus
- Southampton
- UK
- Department of Energy Science
- Sungkyunkwan University
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8
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Huang N, Zou L, Peng Y. Enantioselective 1,3-Dipolar Cycloaddition of Methyleneindolinones with α-Diazomethylphosphonate to Access Chiral Spiro-phosphonylpyrazoline-oxindoles Catalyzed by Tertiary Amine Thiourea and 1,5-Diazabicyclo[4.3.0]non-5-ene. Org Lett 2017; 19:5806-5809. [DOI: 10.1021/acs.orglett.7b02763] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nan Huang
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Liangliang Zou
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Yungui Peng
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, P. R. China
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9
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Du Y, Li J, Chen K, Wu C, Zhou Y, Liu H. Construction of highly enantioenriched spirocyclopentaneoxindoles containing four consecutive stereocenters via thiourea-catalyzed asymmetric Michael-Henry cascade reactions. Beilstein J Org Chem 2017; 13:1342-1349. [PMID: 28781700 PMCID: PMC5530720 DOI: 10.3762/bjoc.13.131] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 06/21/2017] [Indexed: 01/28/2023] Open
Abstract
The thiourea-catalyzed asymmetric synthesis of highly enantioenriched spirocyclopentaneoxindoles containing chiral amide functional groups using simple 3-substituted oxindoles and nitrovinylacetamide as starting materials was achieved successfully. This protocol features operational simplicity, high atom economy, and high catalytic asymmetry, thus representing a versatile approach to the synthesis of highly enantioenriched spirocyclopentaneoxindoles.
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Affiliation(s)
- Yonglei Du
- Nano Science and Technology Institute, University of Science and Technology of China, 166 Ren Ai Road, Suzhou 215123, China
| | - Jian Li
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555, Zu Chong Zhi Road, Shanghai 201203, China
| | - Kerong Chen
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555, Zu Chong Zhi Road, Shanghai 201203, China
| | - Chenglin Wu
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555, Zu Chong Zhi Road, Shanghai 201203, China
| | - Yu Zhou
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555, Zu Chong Zhi Road, Shanghai 201203, China
| | - Hong Liu
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555, Zu Chong Zhi Road, Shanghai 201203, China.,University of Chinese Academy of Sciences, NO.19A Yuquan Road, Beijing 100049, China
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10
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Yang X, Cheng F, Kou YD, Pang S, Shen YC, Huang YY, Shibata N. Catalytic Asymmetric 1,3-Dipolar Cycloaddition of β-Fluoroalkylated α,β-Unsaturated 2-Pyridylsulfones with Nitrones for Chiral Fluoroalkylated Isoxazolidines and γ-Amino Alcohols. Angew Chem Int Ed Engl 2017; 56:1510-1514. [PMID: 28067017 DOI: 10.1002/anie.201610605] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 12/12/2016] [Indexed: 11/06/2022]
Abstract
2-Pyridylsulfone- and fluoroalkylated group-activated olefins underwent highly efficient diastereo- and enantioselective 1,3-dipolar cycloadditions across various aromatic and aliphatic nitrones in the presence of a chiral NiII /bis(oxazoline) catalyst. The process was tuned by 4 Å molecular sieves, chiral bis(oxazoline) ligands, reaction solvents, and temperature. A wide array of optically pure fluoroalkylated isoxazolidines were obtained, thus facilitating the asymmetric synthesis of an enantioenriched α-trifluoromethylated γ-amino alcohol in gram-scale and a trifluoromethylated derivative of 1,3-oxazinan-2-one with potential pharmaceutical interest. A stereochemical model, based on the absolute configuration of one adduct and some control experiments, was postulated to account for the observed endo- and enantioselectivity.
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Affiliation(s)
- Xing Yang
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Feng Cheng
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Ying-Da Kou
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Shuai Pang
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Yong-Cun Shen
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Yi-Yong Huang
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences, Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan
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11
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Yang X, Cheng F, Kou YD, Pang S, Shen YC, Huang YY, Shibata N. Catalytic Asymmetric 1,3-Dipolar Cycloaddition of β-Fluoroalkylated α,β-Unsaturated 2-Pyridylsulfones with Nitrones for Chiral Fluoroalkylated Isoxazolidines and γ-Amino Alcohols. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201610605] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xing Yang
- Department of Chemistry; School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan 430070 P.R. China
| | - Feng Cheng
- Department of Chemistry; School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan 430070 P.R. China
| | - Ying-Da Kou
- Department of Chemistry; School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan 430070 P.R. China
| | - Shuai Pang
- Department of Chemistry; School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan 430070 P.R. China
| | - Yong-Cun Shen
- Department of Chemistry; School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan 430070 P.R. China
| | - Yi-Yong Huang
- Department of Chemistry; School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan 430070 P.R. China
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences; Department of Life Science and Applied Chemistry; Nagoya Institute of Technology; Gokiso, Showa-ku Nagoya 466-8555 Japan
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12
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Zhang D, Yin C, Zhou Y, Xu Y, Lin L, Liu X, Feng X. Chiral N,N′-dioxide/Co(ii)-promoted asymmetric 1,3-dipolar cycloaddition of nitrones with methyleneindolinones. Chem Commun (Camb) 2017; 53:7925-7928. [DOI: 10.1039/c7cc03575f] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A chiral N,N′-dioxide/Co(ii) complex has been developed to efficiently catalyze the asymmetric 1,3-dipolar cycloaddition of nitrones with methyleneindolinones. The corresponding spiroisoxazolidines were obtained in high yields with excellent dr and ee values.
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Affiliation(s)
- Dong Zhang
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Chengkai Yin
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Yuhang Zhou
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Yali Xu
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
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13
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Fastnacht KV, Spink SS, Dharmaratne NU, Pothupitiya JU, Datta PP, Kiesewetter ET, Kiesewetter MK. Bis- and Tris-Urea H-Bond Donors for Ring-Opening Polymerization: Unprecedented Activity and Control from an Organocatalyst. ACS Macro Lett 2016; 5:982-986. [PMID: 35607216 DOI: 10.1021/acsmacrolett.6b00527] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new class of H-bond donating ureas was developed for the ring-opening polymerization (ROP) of lactone monomers, and they exhibit dramatic rate acceleration versus previous H-bond mediated polymerization catalysts. The most active of these new catalysts, a tris-urea H-bond donor, is among the most active organocatalysts known for ROP, yet it retains the high selectivity of H-bond mediated organocatalysts. The urea cocatalyst, along with an H-bond accepting base, exhibits the characteristics of a "living" ROP, is highly active, in one case, accelerating a reaction from days to minutes, and remains active at low catalyst loadings. The rate acceleration exhibited by this H-bond donor occurs for all base cocatalysts examined. A mechanism of action is proposed, and the new catalysts are shown to accelerate small molecule transesterifications versus currently known monothiourea catalysts. It is no longer necessary to choose between a highly active or highly selective organocatalyst for ROP.
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Affiliation(s)
- Kurt V. Fastnacht
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Samuel S. Spink
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | | | - Jinal U. Pothupitiya
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Partha P. Datta
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Elizabeth T. Kiesewetter
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Matthew K. Kiesewetter
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
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14
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Ozeki M, Hayama N, Fukutome S, Egawa H, Arimitsu K, Kajimoto T, Hosoi S, Iwasaki H, Kojima N, Node M, Yamashita M. Construction of Seven Contiguous Chiral Centers by Two Methods: Quadruple Michael Addition vs Stepwise Double-Double Michael Addition Controlled by Adding Speed of Michael Acceptor. ChemistrySelect 2016. [DOI: 10.1002/slct.201600620] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Minoru Ozeki
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Noboru Hayama
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Shintaro Fukutome
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Honoka Egawa
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Kenji Arimitsu
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Tetsuya Kajimoto
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
- Medicinal Organic Chemistry Lab.; College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Noji-higashi, Kusatsu Shiga 525-8577 Japan
| | - Shinzo Hosoi
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Hiroki Iwasaki
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Naoto Kojima
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Manabu Node
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
| | - Masayuki Yamashita
- Department of Pharmaceutical Manufacturing Chemistry; Kyoto Pharmaceutical Universit; 1 Shichono-cho, Misasagi, Yamashina-ku Kyoto 606-8414 Japan
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15
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Tian L, Luo YC, Hu XQ, Xu PF. Recent Developments in the Synthesis of Chiral Compounds with Quaternary Centers by Organocatalytic Cascade Reactions. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201500486] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Li Tian
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 PR China
| | - Yong-Chun Luo
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 PR China
| | - Xiu-Qin Hu
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 PR China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 PR China
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16
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Li X, Xu X, Wei W, Lin A, Yao H. Organocatalyzed Asymmetric 1,6-Conjugate Addition of para-Quinone Methides with Dicyanoolefins. Org Lett 2016; 18:428-31. [DOI: 10.1021/acs.orglett.5b03471] [Citation(s) in RCA: 123] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xuanyi Li
- State Key Laboratory of Natural
Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Xiuyan Xu
- State Key Laboratory of Natural
Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Weiwei Wei
- State Key Laboratory of Natural
Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Aijun Lin
- State Key Laboratory of Natural
Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Hequan Yao
- State Key Laboratory of Natural
Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
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17
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Sankar MG, Garcia-Castro M, Golz C, Strohmann C, Kumar K. l-Isoleucine derived bifunctional phosphine catalyses asymmetric [3 + 2]-annulation of allenyl-esters and -ketones with ketimines. RSC Adv 2016. [DOI: 10.1039/c6ra12387b] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
l-Isoleucine derived bifunctional N-acylaminophosphine catalyzed a [3 + 2]-annulation reaction between allenyl carbonyl compounds and isatinimines to afford a facile and asymmetric access to 3,2′-dihydropyrrolyl spirooxindoles.
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Affiliation(s)
- Muthukumar G. Sankar
- Max-Planck-Institut für Molekulare Physiologie
- Abteilung Chemische Biologie
- 44227 Dortmund
- Germany
| | - Miguel Garcia-Castro
- Max-Planck-Institut für Molekulare Physiologie
- Abteilung Chemische Biologie
- 44227 Dortmund
- Germany
| | - Christopher Golz
- Fakultät Chemie und Chemische Biologie
- Technische Universität Dortmund
- 44221 Dortmund
- Germany
| | - Carsten Strohmann
- Fakultät Chemie und Chemische Biologie
- Technische Universität Dortmund
- 44221 Dortmund
- Germany
| | - Kamal Kumar
- Max-Planck-Institut für Molekulare Physiologie
- Abteilung Chemische Biologie
- 44227 Dortmund
- Germany
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18
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Liu Y, Sun Z, Li S, Xiang K, Zhang Y, Li Y. Mg(ClO4)2-promoted [4 + 3] cycloaddition of oxindole derivatives with conjugated dienes: concise synthesis of spirocycloheptane oxindole derivatives. RSC Adv 2016. [DOI: 10.1039/c6ra03259a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Novel Mg(ClO4)2-promoted [4 + 3] cycloaddition reaction of oxindole derivatives and cyclopentadiene was achieved for the construction of the spirocycloheptane oxindole skeleton.
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Affiliation(s)
- Yun Liu
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Zhou Sun
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Song Li
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Kuirong Xiang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Yuan Zhang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Ying Li
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
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19
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Huang H, Bihani M, Zhao JCG. Stereoselective synthesis of spirooxindole derivatives using an organocatalyzed tandem Michael–Michael reaction. Org Biomol Chem 2016; 14:1755-63. [DOI: 10.1039/c5ob02348c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly efficient and stereoselective method for the synthesis of functionalized spirooxindole derivatives was realized using enamine catalysis.
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Affiliation(s)
- Huicai Huang
- Department of Chemistry
- University of Texas at San Antonio
- San Antonio
- USA
| | - Manisha Bihani
- Department of Chemistry
- University of Texas at San Antonio
- San Antonio
- USA
| | - John C.-G. Zhao
- Department of Chemistry
- University of Texas at San Antonio
- San Antonio
- USA
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20
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Pratap Reddy Gajulapalli V, Lokesh K, Vishwanath M, Kesavan V. Organocatalytic construction of spirooxindole naphthoquinones through Michael/hemiketalization usingl-proline derived bifunctional thiourea. RSC Adv 2016. [DOI: 10.1039/c5ra25025k] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Michael/hemiketalization of 2-hydroxy-1,4-naphthoquinone to oxindole ketoester was studied using a series of chiral bifunctional organocatalysts.
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Affiliation(s)
- V. Pratap Reddy Gajulapalli
- Chemical Biology Laboratory
- Department of Biotechnology
- Bhupat and Jyothi Mehtha School of Biosciences
- Indian Institute of Technology Madras
- Chennai-600036
| | - Kanduru Lokesh
- Chemical Biology Laboratory
- Department of Biotechnology
- Bhupat and Jyothi Mehtha School of Biosciences
- Indian Institute of Technology Madras
- Chennai-600036
| | - Manjunatha Vishwanath
- Chemical Biology Laboratory
- Department of Biotechnology
- Bhupat and Jyothi Mehtha School of Biosciences
- Indian Institute of Technology Madras
- Chennai-600036
| | - Venkitasamy Kesavan
- Chemical Biology Laboratory
- Department of Biotechnology
- Bhupat and Jyothi Mehtha School of Biosciences
- Indian Institute of Technology Madras
- Chennai-600036
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21
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Spink SS, Kazakov OI, Kiesewetter ET, Kiesewetter MK. Rate Accelerated Organocatalytic Ring-Opening Polymerization of L-Lactide via the Application of a Bis(thiourea) H-bond Donating Cocatalyst. Macromolecules 2015; 48:6127-6131. [PMID: 27182086 PMCID: PMC4863465 DOI: 10.1021/acs.macromol.5b01320] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A cocatalyst system consisting of an alkylamine base and a bis(thiourea) featuring a linear alkane tether is shown to dramatically increase the rate of ring-opening polymerization (ROP) of L-lactide versus previously disclosed monothiourea H-bond donors. Rate acceleration occurs regardless of the identity of the alkylamine cocatalyst, and the ROP remains controlled yielding poly(lactide) with narrow molecular weight distributions, predictable molecular weights and high selectivity for monomer. This H-bond mediated ROP of L-lactide constitutes a rare, clear example of rate acceleration with bis(thiourea) H-bond donors versus monothioureas, and the bis(thiourea) is shown to remain highly active for ROP at fractional percent catalyst loadings. Activation at a single monomer ester by both thiourea moieties is implicated as the source of rate acceleration.
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Affiliation(s)
- Samuel S. Spink
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881 United States
| | - Oleg I. Kazakov
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881 United States
| | | | - Matthew K. Kiesewetter
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881 United States
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22
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Organocatalytic Enantioselective Synthesis of Polysubstituted Spirooxindoles using a Tandem Michael-Michael Reaction. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500298] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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23
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Wu MY, He WW, Liu XY, Tan B. Asymmetric Construction of Spirooxindoles by Organocatalytic Multicomponent Reactions Using Diazooxindoles. Angew Chem Int Ed Engl 2015; 54:9409-13. [DOI: 10.1002/anie.201504640] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Indexed: 12/15/2022]
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24
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Wu MY, He WW, Liu XY, Tan B. Asymmetric Construction of Spirooxindoles by Organocatalytic Multicomponent Reactions Using Diazooxindoles. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504640] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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25
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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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26
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Huang LJ, Weng J, Wang S, Lu G. Organocatalytic Diels-Alder Reaction of 2-Vinylindoles with Methyleneindolinones: An Efficient Approach to Functionalized Carbazolespirooxindoles. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201400780] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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27
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Tamura O, Ueda T, Inada M, Morita N. Total Synthesis of Maremycins A and D1 Using Chiral and Cyclic Nitrone with (E)-3-Ethylidene-1-methylindolin-2-one. HETEROCYCLES 2015. [DOI: 10.3987/com-14-s(k)93] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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28
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Zhang YH, Wu MY, Huang WC. Silica gel-promoted practical synthesis of oxindole–nitrones from diazooxindoles and nitrosoarenes under solvent-free conditions. RSC Adv 2015. [DOI: 10.1039/c5ra21874h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A practical and efficient method for the synthesis of oxindole–nitrones from diazooxindoles and nitrosoarenes promoted by silica gel was developed.
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Affiliation(s)
- Yun-Hao Zhang
- Department of Pharmaceutical and Bioengineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Ming-Yue Wu
- Department of Chemistry
- South University of Science and Technology of China
- Shenzhen 518055
- P. R. China
| | - Wen-Cai Huang
- Department of Pharmaceutical and Bioengineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
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29
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Arulananda Babu S, Padmavathi R, Ahmad Aslam N, Rajkumar V. Recent Developments on the Synthesis and Applications of Natural Products-Inspired Spirooxindole Frameworks. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2015. [DOI: 10.1016/b978-0-444-63462-7.00008-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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30
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Ding LZ, Zhong TS, Wu H, Wang YM. Highly Enantioselective Construction of Spirocyclopentaneoxindoles Containing Four Consecutive Stereocenters through an Organocatalytic Iminium-Enamine Cascade Reaction. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402687] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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31
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Chen Q, Wang G, Jiang X, Xu Z, Lin L, Wang R. Highly Enantioselective Organocatalyzed Vinylogous Michael-Type Reaction for the Construction of Trifluoromethylated All-Carbon Quaternary Stereocenters. Org Lett 2014; 16:1394-7. [DOI: 10.1021/ol500157b] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Qiao Chen
- Key Laboratory of Preclinical
Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Guoqiang Wang
- Key Laboratory of Preclinical
Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Xianxing Jiang
- Key Laboratory of Preclinical
Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Zhaoqing Xu
- Key Laboratory of Preclinical
Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Li Lin
- Key Laboratory of Preclinical
Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Rui Wang
- Key Laboratory of Preclinical
Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China
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32
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Cheng D, Ishihara Y, Tan B, Barbas CF. Organocatalytic Asymmetric Assembly Reactions: Synthesis of Spirooxindoles via Organocascade Strategies. ACS Catal 2014. [DOI: 10.1021/cs401172r] [Citation(s) in RCA: 673] [Impact Index Per Article: 67.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Daojuan Cheng
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen, 518055, People’s Republic of China
| | - Yoshihiro Ishihara
- The
Skaggs Institute for Chemical Biology and Departments of Chemistry
and Cell and Molecular Biology, The Scripps Research Institute, 10550
North Torrey Pines Road, La Jolla, California 92037, United States
| | - Bin Tan
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen, 518055, People’s Republic of China
- The
Skaggs Institute for Chemical Biology and Departments of Chemistry
and Cell and Molecular Biology, The Scripps Research Institute, 10550
North Torrey Pines Road, La Jolla, California 92037, United States
| | - Carlos F. Barbas
- The
Skaggs Institute for Chemical Biology and Departments of Chemistry
and Cell and Molecular Biology, The Scripps Research Institute, 10550
North Torrey Pines Road, La Jolla, California 92037, United States
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33
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Huang XF, Zhang YF, Qi ZH, Li NK, Geng ZC, Li K, Wang XW. Organocatalytic enantioselective construction of multi-functionalized spiro oxindole dienes. Org Biomol Chem 2014; 12:4372-85. [DOI: 10.1039/c4ob00545g] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Five-Membered Ring Systems with O & N Atoms. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/b978-0-08-100017-5.00011-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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35
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Mao H, Lin A, Tang Y, Shi Y, Hu H, Cheng Y, Zhu C. Organocatalytic oxa/aza-Michael–Michael Cascade Strategy for the Construction of Spiro [Chroman/Tetrahydroquinoline-3,3′-oxindole] Scaffolds. Org Lett 2013; 15:4062-5. [DOI: 10.1021/ol401595g] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Haibin Mao
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China, and Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Aijun Lin
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China, and Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Yang Tang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China, and Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Yan Shi
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China, and Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Hongwen Hu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China, and Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Yixiang Cheng
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China, and Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Chengjian Zhu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China, and Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
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36
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Mao Z, Li W, Shi Y, Mao H, Lin A, Zhu C, Cheng Y. Enantioselective Construction of Dihydropyran-Fused Indoles through Chiral Calcium Phosphate Catalyzed Oxo-Hetero-Diels-Alder Reactions by Using 2-Oxoindolin-3-ylidenes as Heterodienes. Chemistry 2013; 19:9754-9. [DOI: 10.1002/chem.201301039] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Indexed: 11/11/2022]
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37
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Rassu G, Zambrano V, Pinna L, Curti C, Battistini L, Sartori A, Pelosi G, Zanardi F, Casiraghi G. Direct Regio-, Diastereo-, and Enantioselective Vinylogous Michael Addition of Prochiral 3-Alkylideneoxindoles to Nitroolefins. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300168] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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