101
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Gabbasov TM, Tsyrlina EM, Yunusov MS. Unexpected Products of the Reaction of Lappaconitine-Based Nitrone with N,N-Diethylallylamine. DOKLADY CHEMISTRY 2021. [DOI: 10.1134/s0012500820110038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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102
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Brześkiewicz J, Stańska B, Dąbrowski P, Loska R. C−H Activation and Cross‐Coupling of Acyclic Aldonitrone. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001496] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jakub Brześkiewicz
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Barbara Stańska
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Piotr Dąbrowski
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Rafał Loska
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
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103
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He CT, Han XL, Zhang YX, Du ZT, Si CM, Wei BG. Sc(OTf) 3-catalyzed [3 + 2]-cycloaddition of nitrones with ynones. Org Biomol Chem 2021; 19:457-466. [PMID: 33336677 DOI: 10.1039/d0ob02158j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient approach to access functionalized (2,3-dihydroisoxazol-4-yl) ketones has been developed by reacting nitrones 4 with ynones 7 or terminal ynones 10 in a one-pot fashion. The reaction went through a formal Sc(OTf)3-catalyzed [3 + 2]-cycloaddition process to generate a number of functionalized (2,3-dihydroisoxazol-4-yl) ketones 11aa-11aw, 11ba-11la and 12aa-12ae in moderate to good yields.
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Affiliation(s)
- Chun-Ting He
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China. and College of Science, Northwest A&F University, 22 Xinong Road, Shaanxi, Yangling 712100, China
| | - Xiao-Li Han
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China.
| | - Yan-Xue Zhang
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China.
| | - Zhen-Ting Du
- College of Science, Northwest A&F University, 22 Xinong Road, Shaanxi, Yangling 712100, China
| | - Chang-Mei Si
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China.
| | - Bang-Guo Wei
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China.
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104
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Akulov AA, Varaksin MV, Mampuys P, Charushin VN, Chupakhin ON, Maes BUW. C(sp 2)-H functionalization in non-aromatic azomethine-based heterocycles. Org Biomol Chem 2021; 19:297-312. [PMID: 33026389 DOI: 10.1039/d0ob01580f] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Direct C(sp2)-H functionalization of the endocyclic azomethine and aldonitrone moieties in non-aromatic azaheterocycles has established itself as a promising methodology over the last decade. Transition metal-catalyzed cross-coupling reactions, α-metalation-electrophile quenching protocols, and (metal-free) nucleophilic substitution of hydrogen reactions (SNH) are the major routes applied on cyclic imines and their derivatives. In this overview, we show the tangible progress made in this area during the period from 2008 to 2020.
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Affiliation(s)
- Alexey A Akulov
- Department of Organic & Biomolecular Chemistry, Ural Federal University, 19 Mira Str., 620002 Ekaterinburg, Russia.
| | - Mikhail V Varaksin
- Department of Organic & Biomolecular Chemistry, Ural Federal University, 19 Mira Str., 620002 Ekaterinburg, Russia. and Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 22 S. Kovalevskaya Str., 620990 Ekaterinburg, Russia
| | - Pieter Mampuys
- Division of Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium.
| | - Valery N Charushin
- Department of Organic & Biomolecular Chemistry, Ural Federal University, 19 Mira Str., 620002 Ekaterinburg, Russia. and Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 22 S. Kovalevskaya Str., 620990 Ekaterinburg, Russia
| | - Oleg N Chupakhin
- Department of Organic & Biomolecular Chemistry, Ural Federal University, 19 Mira Str., 620002 Ekaterinburg, Russia. and Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 22 S. Kovalevskaya Str., 620990 Ekaterinburg, Russia
| | - Bert U W Maes
- Division of Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium.
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105
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Zou N, Qin X, Wang Z, Shi W, Mo D. Advances on the Synthesis and Application of α,β-Unsaturated Nitrones. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202109007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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106
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Xie L, Li Y, Dong S, Feng X, Liu X. Catalytic asymmetric formal [3+2] cycloaddition of isatogens with azlactones to construct indolin-3-one derivatives. Chem Commun (Camb) 2021; 57:239-242. [DOI: 10.1039/d0cc06418a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A number of enantioenriched indolin-3-one derivatives were readily obtained by chiral guanidine-catalyzed [3+2] cycloaddition of isatogens with azlactones.
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Affiliation(s)
- Lihua Xie
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Yi Li
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
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107
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Varshnaya RK, Singh P, Kaur N, Banerjee P. Cascade intramolecular rearrangement/cycloaddition of nitrocyclopropane carboxylates with alkynes/alkenes: access to uncommon bi(hetero)cyclic systems. Org Chem Front 2021. [DOI: 10.1039/d0qo01535k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A straightforward approach for the one-pot synthesis of fused bi(hetero)cyclic systems via cascade intramolecular rearrangement/cycloaddition reaction of nitrocyclopropane carboxylates with substituted alkynes/alkenes has been demonstrated.
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Affiliation(s)
| | - Priyanka Singh
- Department of Chemistry
- Indian Institute of Technology Ropar
- Rupnagar
- India
| | - Navpreet Kaur
- Department of Chemistry
- Indian Institute of Technology Ropar
- Rupnagar
- India
| | - Prabal Banerjee
- Department of Chemistry
- Indian Institute of Technology Ropar
- Rupnagar
- India
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108
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Dong P, Chen L, Yang Z, Dong S, Feng X. Asymmetric cycloisomerization/[3 + 2] cycloaddition for the synthesis of chiral spiroisobenzofuran-1,3′-pyrrolidine derivatives. Org Chem Front 2021. [DOI: 10.1039/d1qo01194d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
An asymmetric tandem cycloisomerization/[3 + 2] cycloaddition reaction of 2,2′-diester aziridine and 2-ethynyl benzyl alcohol with Au(i)/chiral N,N′-dioxide−Dy(iii) as a relay catalyst system was developed.
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Affiliation(s)
- Pei Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Long Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Zhendong Yang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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109
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Liu T, Fang Y, Zuo L, Yang Y, Liu Y, Chen W, Dang L, Guo W. Pd/LA-catalyzed decarboxylation enabled exclusive [5 + 2] annulation toward N-aryl azepanes and DFT insights. Org Chem Front 2021. [DOI: 10.1039/d1qo00070e] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A practical approach towards the synthesis of non-fused N-aryl azepane derivatives with diversity is described. DFT calculations revealed the origins of this unusual exclusive [5 + 2] rather than empirical [3 + 2] annulation process.
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Affiliation(s)
- Teng Liu
- Frontier Institute of Science and Technology (FIST)
- Xi'an Jiaotong University
- Xi'an 710045
- China
| | - Yuqi Fang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province
- Shantou University
- Guangdong 515063
- China
| | - Linhong Zuo
- Frontier Institute of Science and Technology (FIST)
- Xi'an Jiaotong University
- Xi'an 710045
- China
| | - Yulian Yang
- Frontier Institute of Science and Technology (FIST)
- Xi'an Jiaotong University
- Xi'an 710045
- China
| | - Yin Liu
- Frontier Institute of Science and Technology (FIST)
- Xi'an Jiaotong University
- Xi'an 710045
- China
| | - Weipeng Chen
- Frontier Institute of Science and Technology (FIST)
- Xi'an Jiaotong University
- Xi'an 710045
- China
| | - Li Dang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province
- Shantou University
- Guangdong 515063
- China
| | - Wusheng Guo
- Frontier Institute of Science and Technology (FIST)
- Xi'an Jiaotong University
- Xi'an 710045
- China
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110
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Gao Y, Song X, Yan RJ, Du W, Chen YC. Asymmetric β,γ′-regioselective [4 + 3] and [4 + 2] annulations of α-vinylenals via cascade iminium ion-dienamine catalysis. Org Biomol Chem 2021; 19:151-155. [PMID: 33112340 DOI: 10.1039/d0ob02068k] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
α-Vinylenal substrates have been designed and applied in β,γ′-regioselective asymmetric [4 + 3] and [4 + 2] annulation reactions via cascade aminocatalysis.
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Affiliation(s)
- Yang Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
| | - Xue Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
| | - Ru-Jie Yan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
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111
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Li T, Liu S, Sun Y, Deng S, Tan W, Jiao Y, Zhang Y, Shi F. Regio‐ and Enantioselective (3+3) Cycloaddition of Nitrones with 2‐Indolylmethanols Enabled by Cooperative Organocatalysis. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011267] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Tian‐Zhen Li
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
| | - Si‐Jia Liu
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
| | - Yu‐Wen Sun
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
| | - Shuang Deng
- School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan 411201 China
| | - Wei Tan
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
| | - Yinchun Jiao
- School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan 411201 China
| | - Yu‐Chen Zhang
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
| | - Feng Shi
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
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112
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Li T, Liu S, Sun Y, Deng S, Tan W, Jiao Y, Zhang Y, Shi F. Regio‐ and Enantioselective (3+3) Cycloaddition of Nitrones with 2‐Indolylmethanols Enabled by Cooperative Organocatalysis. Angew Chem Int Ed Engl 2020; 60:2355-2363. [DOI: 10.1002/anie.202011267] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 10/20/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Tian‐Zhen Li
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
| | - Si‐Jia Liu
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
| | - Yu‐Wen Sun
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
| | - Shuang Deng
- School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan 411201 China
| | - Wei Tan
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
| | - Yinchun Jiao
- School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan 411201 China
| | - Yu‐Chen Zhang
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
| | - Feng Shi
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
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113
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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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114
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Guo J, Xie Y, Zeng W, Wu Q, Weng J, Lu G. Visible‐Light Catalyzed [1+2+2] Cycloaddition Reactions Enabled by the Formation of Methylene Nitrones. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000858] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jing Guo
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Ying Xie
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Wen‐Tian Zeng
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Qiao‐Lei Wu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Jiang Weng
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Gui Lu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 People's Republic of China
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115
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Xu T, Lin N, Hao WJ, Zhang J, Li MF, Tu SJ, Jiang B. Synthesis of polycyclic indoles via organocatalytic bicyclization of α-alkynylnaphthalen-2-ols with nitrones. Chem Commun (Camb) 2020; 56:11406-11409. [PMID: 32853304 DOI: 10.1039/d0cc05027j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A new organocatalytic bicyclization of α-alkynylnaphthalen-2-ols with nitrones was first reported, leading to the convergent synthesis of polycyclic indoles with substantial substitution diversity in generally good yields through scission of the N-O bond of nitrones via [3,3]-sigmatropic rearrangement. This transformation showcases the use of a quinine catalyst in a complicated cascade system that has been shown to effectively construct polycyclic heterocycles via alkyne difunctionalization.
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Affiliation(s)
- Ting Xu
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
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116
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Guo W, Gu J, Gu Z. Catalytic Asymmetric Synthesis of Atropisomeric Nitrones: Versatile Intermediate for Axially Chiral Biaryls. Org Lett 2020; 22:7622-7628. [DOI: 10.1021/acs.orglett.0c02830] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Wenjing Guo
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Jian Gu
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Zhenhua Gu
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
- Ocean College, Minjiang University, Fuzhou, Fujian 350108, P. R. China
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117
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Soulieman A, Ibrahim R, Barakat Z, Gouault N, Roisnel T, Boustie J, Grée R, Hachem A. Synthesis of Novel Cyclic Nitrones with
gem
‐Difluoroalkyl Side Chains Through Cascade Reactions. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000972] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Ali Soulieman
- Faculty of Sciences (I) Laboratory for Medicinal Chemistry and Natural Products, and PRASE‐EDST Lebanese University Hadath Lebanon
- CNRS (Institut for Chemical Sciences in Rennes), UMR 6226 Univ Rennes 35000 Rennes France
| | - Rima Ibrahim
- Faculty of Sciences (I) Laboratory for Medicinal Chemistry and Natural Products, and PRASE‐EDST Lebanese University Hadath Lebanon
| | - Zeinab Barakat
- Faculty of Sciences (I) Laboratory for Medicinal Chemistry and Natural Products, and PRASE‐EDST Lebanese University Hadath Lebanon
| | - Nicolas Gouault
- CNRS (Institut for Chemical Sciences in Rennes), UMR 6226 Univ Rennes 35000 Rennes France
| | - Thierry Roisnel
- CNRS (Institut for Chemical Sciences in Rennes), UMR 6226 Univ Rennes 35000 Rennes France
| | - Joel Boustie
- CNRS (Institut for Chemical Sciences in Rennes), UMR 6226 Univ Rennes 35000 Rennes France
| | - René Grée
- CNRS (Institut for Chemical Sciences in Rennes), UMR 6226 Univ Rennes 35000 Rennes France
| | - Ali Hachem
- Faculty of Sciences (I) Laboratory for Medicinal Chemistry and Natural Products, and PRASE‐EDST Lebanese University Hadath Lebanon
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118
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Lin Z, Qian J, Lu P, Wang Y. Syntheses of 2-Iminoindolin-3-ones and 2-Alknyl-2,3-dihydroquinazolin-4(1 H)-ones from 3-Diazoindolin-2-imines. J Org Chem 2020; 85:11766-11777. [PMID: 32842736 DOI: 10.1021/acs.joc.0c01548] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
3-Diazoindolin-2-imines reacted with nitrones to furnish 2-iminoindolin-3-ones through a Au(I)-catalyzed cascade oxygen transfer/imine exchange process. The prepared 2-iminoindolin-3-ones could be further transformed into 2-alknyl-2,3-dihydroquinazolin-4(1H)-ones through a Ag(I)-catalyzed reaction with terminal alkynes. A MeOH-triggered ring expansion mechanism involving cyclic iminium formation and nucleophilic addition is proposed for this novel alkynylation reaction. This two-step procedure provides a general and convenient approach to 2-alknyl-2,3-dihydroquinazolin-4(1H)-ones, which are privileged structures in medicinal chemistry.
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Affiliation(s)
- Zhenwei Lin
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Jing Qian
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Ping Lu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yanguang Wang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
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119
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120
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Xu JL, Tian H, Kang JH, Kang WX, Sun W, Sun R, Li YM, Sun M. Ag(I)-Catalyzed Addition of Cyclopropenones and Nitrones to Access Imides. Org Lett 2020; 22:6739-6743. [PMID: 32663031 DOI: 10.1021/acs.orglett.0c02099] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
An unprecedented Ag-catalyzed addition reaction of cyclopropenones and nitrones to access imides was developed. Sequential C-C bond cleavage, N-O bond cleavage, and Mumm rearrangement were uncovered in this process. This protocol exhibited high efficiency, regioselectivity, good yields, and a broad tolerance of various functional groups.
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Affiliation(s)
- Jing-Lei Xu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Hu Tian
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Jia-Hao Kang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Wu-Xiang Kang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Wei Sun
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Rui Sun
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Ya-Min Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, 727 Jingming Nanlu, Kunming 650500, China
| | - Meng Sun
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, China.,State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
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121
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Shennan BDA, Smith PW, Ogura Y, Dixon DJ. A modular and divergent approach to spirocyclic pyrrolidines. Chem Sci 2020; 11:10354-10360. [PMID: 34094297 PMCID: PMC8162384 DOI: 10.1039/d0sc03676e] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 08/06/2020] [Indexed: 12/17/2022] Open
Abstract
An efficient three-step sequence to afford a valuable class of spirocyclic pyrrolidines is reported. A reductive cleavage/Horner-Wadsworth-Emmons cascade facilitates the spirocyclisation of a range of isoxazolines bearing a distal β-ketophosphonate. The spirocyclisation precursors are elaborated in a facile and modular fashion, via a [3 + 2]-cycloaddition followed by the condensation of a phosphonate ester, introducing multiple points of divergence. The synthetic utility of this protocol has been demonstrated in the synthesis of a broad family of 1-azaspiro[4,4]nonanes and in a concise formal synthesis of the natural product (±)-cephalotaxine.
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Affiliation(s)
- Benjamin D A Shennan
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford UK
| | - Peter W Smith
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford UK
| | - Yusuke Ogura
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford UK
| | - Darren J Dixon
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford UK
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122
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Messire G, Massicot F, Pascual L, Riguet E, Vasse JL, Behr JB. Broadening the reaction scope of unprotected aldoses via their corresponding nitrones: 1,3-dipolar cycloadditions with alkenes. Org Biomol Chem 2020; 18:5708-5725. [PMID: 32666987 DOI: 10.1039/d0ob01350a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Condensation reactions of unprotected tetroses and pentoses with hydroxylamines afforded nitrones, which were easily converted to densely functionalized isoxazolidines in the presence of electron-poor alkenes. The 1,3-dipolar cycloaddition occurred with good facial discrimination of the chiral nitrone but under rather low endo/exo control. Stereochemistry of isomers was ascertained by chemical correlation with known derivatives from the literature. Microwave activation appeared as the most efficient reaction mode, affording the expected adducts within several minutes whereas hours were needed under standard heating. Alternatively, the transformation proved also possible under high pressure conditions by using a hand pump system, avoiding any energy source. Although water could not be used as the solvent, leading to hydrolysis of the nitrone substrate, a large variety of organic solvents proved efficient. The method has potential use in the preparation of non-ionic carbohydrate-based amphiphiles.
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Affiliation(s)
- Gatien Messire
- Univ. Reims Champagne-Ardenne, ICMR, CNRS UMR 7312, FR Condorcet CNRS 3417, 51687 Reims Cedex 2, France.
| | - Fabien Massicot
- Univ. Reims Champagne-Ardenne, ICMR, CNRS UMR 7312, FR Condorcet CNRS 3417, 51687 Reims Cedex 2, France.
| | - Laura Pascual
- Univ. Reims Champagne-Ardenne, ICMR, CNRS UMR 7312, FR Condorcet CNRS 3417, 51687 Reims Cedex 2, France.
| | - Emmanuel Riguet
- Univ. Reims Champagne-Ardenne, ICMR, CNRS UMR 7312, FR Condorcet CNRS 3417, 51687 Reims Cedex 2, France.
| | - Jean-Luc Vasse
- Univ. Reims Champagne-Ardenne, ICMR, CNRS UMR 7312, FR Condorcet CNRS 3417, 51687 Reims Cedex 2, France.
| | - Jean-Bernard Behr
- Univ. Reims Champagne-Ardenne, ICMR, CNRS UMR 7312, FR Condorcet CNRS 3417, 51687 Reims Cedex 2, France.
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123
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Jeyakannu P, Chandru Senadi G, Chiang C, Kumar Dhandabani G, Chang Y, Wang J. An Efficient Approach to Functionalized Indoles from λ
3
‐Iodanes via Acyloxylation and Acyl Transfer. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Palaniraja Jeyakannu
- Department of Medicinal and Applied ChemistryKaohsiung Medical University No. 100, Shih-Chuan 1st Road, Sanmin District Kaohsiung City 807 Taiwan
| | - Gopal Chandru Senadi
- Department of Chemistry, Faculty of Engineering and TechnologySRM Institute of Science and Technology, Kattankulathur Chennai 603203 India
| | - Chun‐Hsien Chiang
- Department of Medicinal and Applied ChemistryKaohsiung Medical University No. 100, Shih-Chuan 1st Road, Sanmin District Kaohsiung City 807 Taiwan
| | - Ganesh Kumar Dhandabani
- Department of Medicinal and Applied ChemistryKaohsiung Medical University No. 100, Shih-Chuan 1st Road, Sanmin District Kaohsiung City 807 Taiwan
| | - Yu‐Ching Chang
- Department of Medicinal and Applied ChemistryKaohsiung Medical University No. 100, Shih-Chuan 1st Road, Sanmin District Kaohsiung City 807 Taiwan
| | - Jeh‐Jeng Wang
- Department of Medicinal and Applied ChemistryKaohsiung Medical University No. 100, Shih-Chuan 1st Road, Sanmin District Kaohsiung City 807 Taiwan
- Department of Medical ResearchKaohsiung Medical University Hospital No. 100, Tzyou 1st Road, Sanmin District Kaohsiung City 807 Taiwan
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124
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Lisnyak VG, Snyder SA. A Concise, Enantiospecific Total Synthesis of Chilocorine C Fueled by a Reductive Cyclization/Mannich Reaction Cascade. J Am Chem Soc 2020; 142:12027-12033. [PMID: 32551575 DOI: 10.1021/jacs.0c04914] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Among defensive alkaloids isolated from ladybugs, the heterodimeric member chilocorine C possesses an alluring monomeric unit that combines quinolizidine and indolizidine substructures. Indeed, the overall stereochemical disposition of its ring fusions is distinct from those of related natural products. Herein we show that a carefully orchestrated sequence with several chemoselective transformations, including a designed cascade that accomplishes nine distinct chemical reactions in one-pot, can smoothly forge that domain and ultimately enable a 15-step, 11-pot enantiospecific synthesis of the natural product. Mechanistic studies, density functional theory calculations, and the delineation of several other unsuccessful approaches highlight its unique elements.
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Affiliation(s)
- Vladislav G Lisnyak
- Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
| | - Scott A Snyder
- Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
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125
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Amitina SA, Zaytseva EV, Dmitrieva NA, Lomanovich AV, Kandalintseva NV, Ten YA, Artamonov IA, Markov AF, Mazhukin DG. 5-Aryl-2-(3,5-dialkyl-4-hydroxyphenyl)-4,4-dimethyl-4 H-imidazole 3-Oxides and Their Redox Species: How Antioxidant Activity of 1-Hydroxy-2,5-dihydro-1 H-imidazoles Correlates with the Stability of Hybrid Phenoxyl-Nitroxides. Molecules 2020; 25:E3118. [PMID: 32650477 PMCID: PMC7396990 DOI: 10.3390/molecules25143118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/05/2020] [Accepted: 07/07/2020] [Indexed: 11/16/2022] Open
Abstract
Cyclic nitrones of the imidazole series, containing a sterically hindered phenol group, are promising objects for studying antioxidant activity; on the other hand, they can form persistent hybrid phenoxyl-nitroxyl radicals (HPNs) upon oxidation. Here, a series of 5-aryl-4,4-dimethyl-4H-imidazole 3-oxides was obtained by condensation of aromatic 2-hydroxylaminoketones with 4-formyl-2,6-dialkylphenols followed by oxidation of the initially formed N-hydroxy derivatives. It was shown that the antioxidant activity of both 1-hydroxy-2,5-dihydroimidazoles and 4H-imidazole 3-oxides increases with a decrease in steric volume of the alkyl substituent in the phenol group, while the stability of the corresponding HPNs generated from 4H-imidazole 3-oxides reveals the opposite tendency.
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Affiliation(s)
- Svetlana A. Amitina
- Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), Academician Lavrentiev Ave. 9, 630090 Novosibirsk, Russia; (S.A.A.); (E.V.Z.); (A.V.L.); (Y.A.T.); (I.A.A.)
| | - Elena V. Zaytseva
- Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), Academician Lavrentiev Ave. 9, 630090 Novosibirsk, Russia; (S.A.A.); (E.V.Z.); (A.V.L.); (Y.A.T.); (I.A.A.)
| | - Natalya A. Dmitrieva
- Department of Chemistry, Institute of Chemistry of Antioxidants, Novosibirsk State Pedagogical University, Vilyuyskaya Str. 28, 6301026 Novosibirsk, Russia; (N.A.D.); (N.V.K.); (A.F.M.)
| | - Alyona V. Lomanovich
- Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), Academician Lavrentiev Ave. 9, 630090 Novosibirsk, Russia; (S.A.A.); (E.V.Z.); (A.V.L.); (Y.A.T.); (I.A.A.)
| | - Natalya V. Kandalintseva
- Department of Chemistry, Institute of Chemistry of Antioxidants, Novosibirsk State Pedagogical University, Vilyuyskaya Str. 28, 6301026 Novosibirsk, Russia; (N.A.D.); (N.V.K.); (A.F.M.)
| | - Yury A. Ten
- Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), Academician Lavrentiev Ave. 9, 630090 Novosibirsk, Russia; (S.A.A.); (E.V.Z.); (A.V.L.); (Y.A.T.); (I.A.A.)
| | - Ilya A. Artamonov
- Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), Academician Lavrentiev Ave. 9, 630090 Novosibirsk, Russia; (S.A.A.); (E.V.Z.); (A.V.L.); (Y.A.T.); (I.A.A.)
| | - Alexander F. Markov
- Department of Chemistry, Institute of Chemistry of Antioxidants, Novosibirsk State Pedagogical University, Vilyuyskaya Str. 28, 6301026 Novosibirsk, Russia; (N.A.D.); (N.V.K.); (A.F.M.)
| | - Dmitrii G. Mazhukin
- Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), Academician Lavrentiev Ave. 9, 630090 Novosibirsk, Russia; (S.A.A.); (E.V.Z.); (A.V.L.); (Y.A.T.); (I.A.A.)
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126
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Pipim GB, Tia R, Adei E. Investigating the regio-, stereo-, and enantio-selectivities of the 1,3-dipolar cycloaddition reaction of C-cyclopropyl-N-phenylnitrone derivatives and benzylidenecyclopropane derivatives: A DFT study. J Mol Graph Model 2020; 100:107672. [PMID: 32659628 DOI: 10.1016/j.jmgm.2020.107672] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/23/2020] [Accepted: 06/24/2020] [Indexed: 01/03/2023]
Abstract
The biomedical importance of spirocyclopropane isoxazolidine derivatives is widely known. The 1,3-dipolar cycloaddition (1,3-DC) of C-cyclopropyl-N-phenylnitrone derivative and benzylidenecyclopropane derivatives leading to the formation of 5- and 4-spirocyclopropane isoxazolidines derivatives have been studied using density functional theory (DFT) at M06-2X/6-311G (d,p) level of theory. An extensive exploration of the potential energy surface shows that the 1,3-dipole adds across the dipolarophile via an asynchronous concerted mechanism. While electron-donating groups (EDGs) on the benzylidenecyclopropane favor the formation of the 4-spirocyclopropane isomer, electron-withdrawing groups (EWGs) favor the reaction channels that furnish the 5-spirocyclopropane isoxazolidine isomer. Both EWDs and EDGs on the 1,3-dipole favor the formation of the 5-spirocyclopropane isoxazolidine isomer. Irrespective of the electronic nature of substituents on the C-cyclopropyl-N-phenylnitrone, the reaction channels that regioselectively lead to the formation of the 5-spirocyclopropane isoxazolidine isomer are favored. In all reactions considered, the channels that selectively lead to the formation of the cis-diastereoisomers proceed with lower activation barriers than the trans-diastereoisomers. In all cases, the observed selectivities in the title reaction are kinetically controlled.
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Affiliation(s)
- George Baffour Pipim
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Richard Tia
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Evans Adei
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
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127
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Ranzenigo A, Mercurio C, Karrenbrock M, Cordero FM, Cardini G, Pagliai M, Brandi A. Regioselective Deuteration of a 3,4-Dialkoxypyrroline N
-Oxide and Synthesis of 8a- d
-Indolizidines. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anna Ranzenigo
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Chiara Mercurio
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Maurice Karrenbrock
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Franca M. Cordero
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Gianni Cardini
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Marco Pagliai
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Alberto Brandi
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
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128
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Meng X, Pan H, Zhu G, Zhang X. Highly efficient Mukaiyama-Mannich addition of α-diazo silyl enolate with nitrones catalyzed by MgI2 etherate. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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129
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Shao H, Fang K, Wang YP, Zhang XM, Ding TM, Zhang SY, Chen ZM, Tu YQ. Total Synthesis of Fawcettimine-Type Alkaloid, Lycojaponicumin A. Org Lett 2020; 22:3775-3779. [PMID: 32330061 DOI: 10.1021/acs.orglett.0c00961] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The efficient total synthesis of lycojaponicumin A (1) has been accomplished for the first time. The remarkable features of this novel strategy include the following: (1) rapid construction of tricyclic intermediate 4 through a regio- and stereoselective semipinacol ring expansion, which simplified the construction of rings A and B of 1; (2) the subsequent regio- and stereoselective formation of the highly strained rings C-E of 1 through a tandem oxa-hetero [3 + 2] cycloaddition/N-cycloalkylation.
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Affiliation(s)
- Hui Shao
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240
| | - Kun Fang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P. R. China, 730000
| | - Yun-Peng Wang
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P. R. China, 730000
| | - Tong-Mei Ding
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240
| | - Shu-Yu Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240
| | - Zhi-Min Chen
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240
| | - Yong-Qiang Tu
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240.,State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P. R. China, 730000
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130
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Hong FL, Chen YB, Ye SH, Zhu GY, Zhu XQ, Lu X, Liu RS, Ye LW. Copper-Catalyzed Asymmetric Reaction of Alkenyl Diynes with Styrenes by Formal [3 + 2] Cycloaddition via Cu-Containing All-Carbon 1,3-Dipoles: Access to Chiral Pyrrole-Fused Bridged [2.2.1] Skeletons. J Am Chem Soc 2020; 142:7618-7626. [PMID: 32237743 DOI: 10.1021/jacs.0c01918] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The generation of metal-containing 1,3-dipoles from metal carbenes represents a significant advance in 1,3-dipolar cycloaddition reactions. However, these transformations have so far been limited to reactions based on diazo compounds or triazoles as precursors. Herein, we disclose a copper-catalyzed enantioselective reaction of alkenyl N-propargyl ynamides with styrene derivatives by formal [3 + 2] cycloaddition via Cu-containing all-carbon 1,3-dipoles, which constitutes a novel way for the generation of metal-containing 1,3-dipoles via metal carbenes. This protocol allows the practical and atom-economical synthesis of valuable chiral pyrrole-fused bridged [2.2.1] skeletons in moderate to good yields (up to 90% yield) with excellent diastereoselectivities (dr > 50/1) and generally excellent enantioselectivities (up to >99% ee).
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Affiliation(s)
- Feng-Lin Hong
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Yang-Bo Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Si-Han Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Guang-Yu Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Xin-Qi Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Xin Lu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Rai-Shung Liu
- Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, Republic of China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
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131
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Panahi M, Rahimi B, Rahimi G, Yew Low T, Saraygord-Afshari N, Alizadeh E. Cytoprotective effects of antioxidant supplementation on mesenchymal stem cell therapy. J Cell Physiol 2020; 235:6462-6495. [PMID: 32239727 DOI: 10.1002/jcp.29660] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 02/15/2020] [Indexed: 12/11/2022]
Abstract
Mesenchymal stem cells (MSCs) are earmarked as perfect candidates for cell therapy and tissue engineering due to their capacity to differentiate into different cell types. However, their potential for application in regenerative medicine declines when the levels of the reactive oxygen and nitrogen species (RONS) increase from the physiological levels, a phenomenon which is at least inevitable in ex vivo cultures and air-exposed damaged tissues. Increased levels of RONS can alter the patterns of osteogenic and adipogenic differentiation and inhibit proliferation, as well. Besides, oxidative stress enhances senescence and cell death, thus lowering the success rates of the MSC engraftment. Hence, in this review, we have selected some representatives of antioxidants and newly emerged nano antioxidants in three main categories, including chemical compounds, biometabolites, and protein precursors/proteins, which are proved to be effective in the treatment of MSCs. We will focus on how antioxidants can be applied to optimize the clinical usage of the MSCs and their associated signaling pathways. We have also reviewed several paralleled properties of some antioxidants and nano antioxidants which can be simultaneously used in real-time imaging, scaffolding techniques, and other applications in addition to their primary antioxidative function.
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Affiliation(s)
- Mohammad Panahi
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Bahareh Rahimi
- Department of Medical Biotechnology, Faculty of Allied Medical Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Golbarg Rahimi
- Department of Cellular and Molecular Biology, University of Esfahan, Esfahan, Iran
| | - Teck Yew Low
- UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Neda Saraygord-Afshari
- Department of Medical Biotechnology, Faculty of Allied Medical Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Effat Alizadeh
- Drug Applied Research Center and Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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132
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Yan X, Shimadate Y, Kato A, Li YX, Jia YM, Fleet GWJ, Yu CY. Synthesis of Pyrrolidine Monocyclic Analogues of Pochonicine and Its Stereoisomers: Pursuit ofSimplified Structures and Potent β- N-Acetylhexosaminidase Inhibition. Molecules 2020; 25:E1498. [PMID: 32218360 PMCID: PMC7180638 DOI: 10.3390/molecules25071498] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/18/2020] [Accepted: 03/23/2020] [Indexed: 11/24/2022] Open
Abstract
Ten pairs of pyrrolidine analogues of pochonicine and its stereoisomers have been synthesized from four enantiomeric pairs of polyhydroxylated cyclic nitrones. Among the ten N-acetylamino pyrrolidine analogues, only compounds with 2,5-dideoxy-2,5-imino-d-mannitol (DMDP) and pochonicine (1) configurations showed potent inhibition of β-N-acetylhexosaminidases (β-HexNAcases); while 1-amino analogues lost almost all their inhibitions towards the tested enzymes. The assay results reveal the importance of the N-acetylamino group and the possible right configurations of pyrrolidine ring required for this type of inhibitors.
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Affiliation(s)
- Xin Yan
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (X.Y.); (Y.-M.J.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuna Shimadate
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan;
| | - Atsushi Kato
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan;
| | - Yi-Xian Li
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (X.Y.); (Y.-M.J.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yue-Mei Jia
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (X.Y.); (Y.-M.J.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - George W. J. Fleet
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX13TA, UK;
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China
| | - Chu-Yi Yu
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (X.Y.); (Y.-M.J.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China
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133
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Legnani L, Iannazzo D, Pistone A, Celesti C, Giofrè S, Romeo R, Di Pietro A, Visalli G, Fresta M, Bottino P, Blanco I, Chiacchio MA. Functionalized polyhedral oligosilsesquioxane (POSS) based composites for bone tissue engineering: synthesis, computational and biological studies. RSC Adv 2020; 10:11325-11334. [PMID: 35495324 PMCID: PMC9050444 DOI: 10.1039/d0ra01636e] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 03/12/2020] [Indexed: 12/18/2022] Open
Abstract
Functionalized polyhedral oligosilsesquioxanes (POSS) containing an isoxazolidine nucleus have been synthesized by microwave assisted 1,3-dipolar cycloaddition of N-methyl-C-alkoxycarbonyl nitrone 1 with POSS containing olefin moieties. The results of cycloaddition processes were rationalized by computational studies at the DFT level. The covalent conjugation of chitosan with the cycloadduct 3a leads to composite material CS-POSS 7 which was gelified using genipin as cross linking agent. The suitability of the system for bone tissue engineering purposes was evaluated by in vitro drug release studies using ketoprofen as a model drug and cytotoxicity assays performed on human fetal osteoblastic cells. The preliminary biological tests showed the lack of cytotoxicity of the hybrid material and suggest its potential role in bone tissue engineering applications.
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Affiliation(s)
- Laura Legnani
- Dipartimento di Scienze del Farmaco, Università di Catania Viale A. Doria 6 95125 Catania Italy
| | - Daniela Iannazzo
- Dipartimento di Ingegneria, Università di Messina Contrada Di Dio 98166 Messina Italy
| | - Alessandro Pistone
- Dipartimento di Ingegneria, Università di Messina Contrada Di Dio 98166 Messina Italy
| | - Consuelo Celesti
- Dipartimento di Ingegneria, Università di Messina Contrada Di Dio 98166 Messina Italy
| | - Salvatore Giofrè
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina Via S.S. Annunziata 98168 Messina Italy
| | - Roberto Romeo
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina Via S.S. Annunziata 98168 Messina Italy
| | - Angela Di Pietro
- Dipartimento di Scienze Biomediche, Odontoiatriche e delle Immagini Morfologiche e Funzionali Via Consolare Valeria 1 98100 Messina Italy
| | - Giuseppa Visalli
- Dipartimento di Scienze Biomediche, Odontoiatriche e delle Immagini Morfologiche e Funzionali Via Consolare Valeria 1 98100 Messina Italy
| | - Monica Fresta
- Dipartimento di Scienze del Farmaco, Università di Catania Viale A. Doria 6 95125 Catania Italy
| | - Paola Bottino
- Dipartimento di Scienze del Farmaco, Università di Catania Viale A. Doria 6 95125 Catania Italy
| | - Ignazio Blanco
- Dipartimento di Ingegneria Civile e Architettura, Università di Catania Viale A. Doria 6 95125 Catania Italy
| | - Maria Assunta Chiacchio
- Dipartimento di Scienze del Farmaco, Università di Catania Viale A. Doria 6 95125 Catania Italy
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134
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Angyal A, Demjén A, Wölfling J, Puskás LG, Kanizsai I. Acid-Catalyzed 1,3-Dipolar Cycloaddition of 2 H-Azirines with Nitrones: An Unexpected Access to 1,2,4,5-Tetrasubstituted Imidazoles. J Org Chem 2020; 85:3587-3595. [PMID: 32020808 DOI: 10.1021/acs.joc.9b03288] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The first 1,3-dipolar cycloaddition of 2H-azirines with nitrones, a straightforward approach toward the regioselective synthesis of 1,2,4,5-tetrasubstituted imidazoles, is reported. This trifluoroacetic acid-catalyzed protocol tolerates a broad range of aliphatic and aromatic substrates, offering an efficient access to highly diverse, multisubstituted imidazoles in isolated yields up to 83% under mild conditions.
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Affiliation(s)
- Anikó Angyal
- AVIDIN Ltd., Alsó kikötő sor 11/D, Szeged H-6726, Hungary.,Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary
| | - András Demjén
- AVIDIN Ltd., Alsó kikötő sor 11/D, Szeged H-6726, Hungary
| | - János Wölfling
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary
| | | | - Iván Kanizsai
- AVIDIN Ltd., Alsó kikötő sor 11/D, Szeged H-6726, Hungary
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135
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Ring opening [3 + 2] cyclization of azaoxyallyl cations with benzo[d]isoxazoles: Efficient access to 2-hydroxyaryl-oxazolines. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.09.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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136
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Pipim GB, Opoku E, Tia R, Adei E. Peri-, Chemo-, Regio-, Stereo- and Enantio-Selectivities of 1,3-dipolar cycloaddition reaction of C,N-Disubstituted nitrones with disubstituted 4-methylene-1,3-oxazol-5(4H)- one: A quantum mechanical study. J Mol Graph Model 2020; 97:107542. [PMID: 32004806 DOI: 10.1016/j.jmgm.2020.107542] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 01/15/2020] [Accepted: 01/16/2020] [Indexed: 10/25/2022]
Abstract
The peri-, chemo-, regio-, stereo- and enantio-selectivities of 1,3-dipolar cycloaddition reaction of C,N-disubstituted nitrones with disubstituted 4-methylene-1,3-oxazol-5(4H)-one have been studied using density functional theory (DFT) at the M06-2X/6-311G (d,p) level of theory. The 1,3-dipole preferentially adds chemo-selectively across the olefinic bond in a (3 + 2) fashion forming the corresponding spirocycloadduct. The titled reaction occurs with poor enantio- and stereo-selectivities, but a high degree of regio-selectivity is observed for the addition of the 1,3-dipole across the dipolarophile. Electron-withdrawing groups on the dipolarophile significantly reduce the activation barriers while electron-donating groups on the dipolarophile increase the activation barriers. Analysis of the HOMO and LUMO energies of the two reacting species indicates that the 1,3-dipole reacts as a nucleophile while the dipolarophile reacts as the electrophile. Investigation of the electrophilic Parr function (PK+) at the various reaction centers in the dipolarophile indicates that the 1,3-dipole selectively adds across the atomic species with the largest electrophilic Mulliken and NBO atomic spin densities which is in accordance with the energetic trends observed.
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Affiliation(s)
- George Baffour Pipim
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Ernest Opoku
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Richard Tia
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Evans Adei
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
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137
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Hu B, Zhang X, Mo Y, Li J, Lin L, Liu X, Feng X. Catalytic Asymmetric Tandem Cycloisomerization/[5+2] Cycloaddition Reaction of N-Aryl Nitrone Alkynes with Methyleneindolinones. Org Lett 2020; 22:1034-1039. [DOI: 10.1021/acs.orglett.9b04572] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Bowen Hu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiying Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yuhao Mo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Jinzhao Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - LiLi Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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138
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Zhang S, Tang A, Chen P, Zhao Z, Miao M, Ren H. Tunable Gold(I)-Catalyzed [4 + 3] Cycloaddition for Divergent Synthesis of Furan-Fused N,O-Heterocycles. Org Lett 2020; 22:848-853. [DOI: 10.1021/acs.orglett.9b04312] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shouzhi Zhang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
| | - Aijie Tang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
| | - Panpan Chen
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
| | - Zhiqiang Zhao
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
| | - Maozhong Miao
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
| | - Hongjun Ren
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou, Zhejiang 318000, P. R. China
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139
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Dong K, Xu X, Doyle MP. Copper(i)-catalyzed highly enantioselective [3 + 3]-cycloaddition of γ-alkyl enoldiazoacetates with nitrones. Org Chem Front 2020. [DOI: 10.1039/d0qo00539h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Chiral copper(i) catalysts are preferred over chiral dirhodium(ii) catalysts for [3 + 3]-cycloaddition reactions of γ-alkyl-substituted enoldiazoacetates compounds with nitrones.
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Affiliation(s)
- Kuiyong Dong
- Department of Chemistry
- University of Texas at San Antonio
- San Antonio
- USA
- Key Laboratory of Organic Synthesis of Jiangsu Province
| | - Xinfang Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Michael P. Doyle
- Department of Chemistry
- University of Texas at San Antonio
- San Antonio
- USA
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140
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Wei C, Zhang JQ, Zhang JJ, Liang C, Mo DL. Catalyst-controlled formal [4 + 1] annulation of N-vinyl fluorenone nitrones and allenoates to prepare spirofluorenylpyrrolines. Org Chem Front 2020. [DOI: 10.1039/d0qo00224k] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A simple gimeracil-controlled formal [4 + 1] annulation was developed to prepare various spirofluorenylpyrrolines in good yields with high diastereoselectivity from N-vinyl fluorenone nitrones and allenoates.
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Affiliation(s)
- Cui Wei
- State key laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- China
| | - Jin-Qi Zhang
- State key laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- China
| | - Jia-Jie Zhang
- State key laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- China
| | - Cui Liang
- State key laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- China
| | - Dong-Liang Mo
- State key laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- China
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141
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Ivanov AV, Martynovskaya SV, Shcherbakova VS, Ushakov IA, Borodina TN, Bobkov AS, Vitkovskaya NM. Ambient access to a new family of pyrrole-fused pyrazine nitrones via 2-carbonyl- N-allenylpyrroles. Org Chem Front 2020. [DOI: 10.1039/d0qo00762e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The chemo-, regio- and stereoselective synthesis of pyrrole-fused pyrazine nitrones via the direct reaction of 2-carbonyl-N-allenylpyrroles (readily accessible from the corresponding NH-pyrroles) with hydroxyl amine hydrochloride has been developed.
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Affiliation(s)
- Andrey V. Ivanov
- Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences
- 664033 Irkutsk
- Russian Federation
| | - Svetlana V. Martynovskaya
- Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences
- 664033 Irkutsk
- Russian Federation
| | - Victoria S. Shcherbakova
- Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences
- 664033 Irkutsk
- Russian Federation
| | - Igor A. Ushakov
- Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences
- 664033 Irkutsk
- Russian Federation
| | - Tatyana N. Borodina
- Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences
- 664033 Irkutsk
- Russian Federation
| | - Alexander S. Bobkov
- Laboratory of Quantum Chemical Modeling of Molecular Systems
- Irkutsk State University
- 664003 Irkutsk
- Russian Federation
| | - Nadezhda M. Vitkovskaya
- Laboratory of Quantum Chemical Modeling of Molecular Systems
- Irkutsk State University
- 664003 Irkutsk
- Russian Federation
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142
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Xu C, Yang Y, Wu Y, He F, He H, Deng P, Zhou H. Development of TsDPEN based imine-containing ligands for the copper-catalysed asymmetric Kinugasa reaction. RSC Adv 2020; 10:18107-18114. [PMID: 35517194 PMCID: PMC9053751 DOI: 10.1039/d0ra03276j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Accepted: 05/04/2020] [Indexed: 01/23/2023] Open
Abstract
A novel class of chiral N,N,N imine-containing ligands derived from TsDPEN (N-(p-tosyl)-1,2-diphenylethylene-1,2-diamine) has been developed and applied to the copper-catalyzed asymmetric Kinugasa reaction. The copper(ii) salt proved to be an efficient catalyst precursor, and it provides an efficient way to synthesize enantioenriched cis-β-lactam. The pathway is air-tolerant and easily manipulated, and the ligands are easy to synthesize. A working model is proposed in which the stereocontrolling step is the [2 + 2] cycloaddition between ketene and imine to explain the observed stereoselectivities. A novel class of chiral N,N,N imine-containing ligands derived from TsDPEN has been developed and applied to the copper-catalyzed asymmetric Kinugasa reaction.![]()
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Affiliation(s)
- Chuanlong Xu
- Chongqing Research Center for Pharmaceutical Engineering
- Research Center for Innovative Pharmaceutical and Excipient Analysis Technology
- College of Pharmacy
- Chongqing Medical University
- Chongqing 400016
| | - Yuchen Yang
- Chongqing Research Center for Pharmaceutical Engineering
- Research Center for Innovative Pharmaceutical and Excipient Analysis Technology
- College of Pharmacy
- Chongqing Medical University
- Chongqing 400016
| | - Yue Wu
- Chongqing Research Center for Pharmaceutical Engineering
- Research Center for Innovative Pharmaceutical and Excipient Analysis Technology
- College of Pharmacy
- Chongqing Medical University
- Chongqing 400016
| | - Feilong He
- Chongqing Research Center for Pharmaceutical Engineering
- Research Center for Innovative Pharmaceutical and Excipient Analysis Technology
- College of Pharmacy
- Chongqing Medical University
- Chongqing 400016
| | - Huakang He
- Chongqing Research Center for Pharmaceutical Engineering
- Research Center for Innovative Pharmaceutical and Excipient Analysis Technology
- College of Pharmacy
- Chongqing Medical University
- Chongqing 400016
| | - Ping Deng
- Chongqing Research Center for Pharmaceutical Engineering
- Research Center for Innovative Pharmaceutical and Excipient Analysis Technology
- College of Pharmacy
- Chongqing Medical University
- Chongqing 400016
| | - Hui Zhou
- Chongqing Research Center for Pharmaceutical Engineering
- Research Center for Innovative Pharmaceutical and Excipient Analysis Technology
- College of Pharmacy
- Chongqing Medical University
- Chongqing 400016
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143
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Hu H, Xu J, Wang F, Dong S, Liu X, Feng X. Chiral Sc III- N, N'-Dioxide-Catalyzed 1,3-Dipolar Cycloaddition of Diaziridines with Chalcones. Org Lett 2019; 22:93-97. [PMID: 31833774 DOI: 10.1021/acs.orglett.9b04007] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A highly enantioselective 1,3-dipolar cycloaddition of meso-diaziridines with chalcones was realized by utilizing the ScIII-N,N'-dioxide complex as the catalyst. In this transformation, the 1,3-dipole intermediates generated from the C-N bond cleavage of diaziridine were trapped by chiral N,N'-dioxide/scandium(III) complex activated chalcones to undergo enantioselective 1,3-dipolar cycloaddition. A range of chiral 1,5-diazabicylo[3.3.0]octane derivatives were readily synthesized in good yields with high diastereo- and enantioselectivities.
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Affiliation(s)
- Haipeng Hu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Jinxiu Xu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Fang Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
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144
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Matassini C, Bonanni M, Marradi M, Cicchi S, Goti A. On the Virtue of Indium in Reduction Reactions. A Comparison of Reductions Mediated by Indium and Zinc: Is Indium Metal an Effective Catalyst for Zinc Induced Reductions? Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201901081] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Camilla Matassini
- Dipartimento di Chimica “Ugo Schiff” Università degli Studi di Firenze Via della Lastruccia 3‐13 50019 Sesto Fiorentino (FI) Italy
| | - Marco Bonanni
- Dipartimento di Chimica “Ugo Schiff” Università degli Studi di Firenze Via della Lastruccia 3‐13 50019 Sesto Fiorentino (FI) Italy
| | - Marco Marradi
- Dipartimento di Chimica “Ugo Schiff” Università degli Studi di Firenze Via della Lastruccia 3‐13 50019 Sesto Fiorentino (FI) Italy
| | - Stefano Cicchi
- Dipartimento di Chimica “Ugo Schiff” Università degli Studi di Firenze Via della Lastruccia 3‐13 50019 Sesto Fiorentino (FI) Italy
| | - Andrea Goti
- Dipartimento di Chimica “Ugo Schiff” Università degli Studi di Firenze Via della Lastruccia 3‐13 50019 Sesto Fiorentino (FI) Italy
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145
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Ma X, Nong C, Zhao J, Lu X, Liang C, Mo D. Yb(OTf)
3
‐Catalyzed Cycloaddition/[3,3]‐Rearrangement of
N
‐Vinyl‐α,β‐Unsaturated Ketonitrones with Methylenecycloprop‐anes: Stereoselective Synthesis of Nine‐Membered Nitrogen Heterocycles. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901206] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Xiao‐Pan Ma
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Education of China; School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Cai‐Mei Nong
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Education of China; School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Jie Zhao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Education of China; School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Xiuqiang Lu
- Fuqing Branch of Fujian Normal University, Fuzhou Fujian 350300 People's Republic of China
| | - Cui Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Education of China; School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Dong‐Liang Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Education of China; School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004 People's Republic of China
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146
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Abstract
The nitrogen inversion energies of a series of N-substituted isoxazolidin-5-ones were studied by density functional theory. The transition state energy was found to strongly correlate with the s-character of the lone pair of electrons on the nitrogen in the ground state. Although the activation energy trends for isxazolidin-5-ones and isoxazolidines are similar, their conformational equilibria are slightly different and the isoxazolidin-5-one inversion energies are generally higher.
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147
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Affiliation(s)
- Alexey Yu. Sukhorukov
- N. D. Zelinsky Institute of Organic Chemistry Leninsky prospect 47 Moscow Russia 119991
- D. Mendeleev University of Chemical Technology of Russia Miusskaya sq. 9 Moscow Russia 125047
- Plekhanov Russian University of Economics Stremyanny per. 36 Moscow Russia 117997
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148
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Ishizuka H, Adachi K, Odagi M, Nagasawa K. Synthesis of Isoxazolidines by Intramolecular Hydroamination of N-Alkoxyamides in the Presence of a Visible-Light Photoredox Catalyst. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190127] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hayate Ishizuka
- Department of Biotechnology and Life Science, Graduate School of Technology, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei city, Tokyo 184-8588, Japan
| | - Kanna Adachi
- Department of Biotechnology and Life Science, Graduate School of Technology, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei city, Tokyo 184-8588, Japan
| | - Minami Odagi
- Department of Biotechnology and Life Science, Graduate School of Technology, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei city, Tokyo 184-8588, Japan
| | - Kazuo Nagasawa
- Department of Biotechnology and Life Science, Graduate School of Technology, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei city, Tokyo 184-8588, Japan
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149
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Brar A, Unruh DK, Ling N, Krempner C. BPh 3-Catalyzed [2+3] Cycloaddition of Ph 3PCCO with Aldonitrones: Access to 5-Isoxazolidinones with Exocyclic Phosphonium Ylide Moieties. Org Lett 2019; 21:6305-6309. [PMID: 31356091 DOI: 10.1021/acs.orglett.9b02192] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A method for the generation of 5-isoxazolidinones with exocyclic phosphonium ylide functionalities via [2+3] cycloaddition of Ph3PCCO and aldonitrones has been developed and applied in the synthesis of 4-alkylidene-5-isoxazolidinones via Wittig olefination. The reaction proceeds by BPh3 catalysis under mild conditions and with a broad substrate scope. A reaction pathway involving the activation of the aldonitrone via interactions with the Lewis acid BPh3 is proposed.
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Affiliation(s)
- Amandeep Brar
- Department of Chemistry & Biochemistry , Texas Tech University , Box 41061, Lubbock , Texas 79409-1061 , United States
| | - Daniel K Unruh
- Department of Chemistry & Biochemistry , Texas Tech University , Box 41061, Lubbock , Texas 79409-1061 , United States
| | - Natalie Ling
- Department of Chemistry & Biochemistry , Texas Tech University , Box 41061, Lubbock , Texas 79409-1061 , United States
| | - Clemens Krempner
- Department of Chemistry & Biochemistry , Texas Tech University , Box 41061, Lubbock , Texas 79409-1061 , United States
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Liu M, Zhou T, Zhang M, Zhao J, Zhang Q. Palladium(II)‐Catalyzed Cope‐Type Hydroamination: Efficient Access to Five and Six‐Membered Cyclic Nitrones. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Mingzhu Liu
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Tingting Zhou
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Mengru Zhang
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Jinbo Zhao
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Qian Zhang
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic Chemistry, CAS Shanghai 200032 P. R. China
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