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Ziyaei Halimehjani A, Tahvildari H. Bromonitroalkenes as efficient intermediates in organic synthesis. Org Biomol Chem 2024; 22:4801-4838. [PMID: 38817165 DOI: 10.1039/d4ob00221k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
Bromonitroalkenes are useful molecules in synthetic organic chemistry. They are mainly prepared from nitroalkenes via bromination reactions. In this review, the application of bromonitroalkenes as partners in the reaction with a diversity of mono- and bi-functional molecules, including aldehydes and ketones, active methylene compounds, 1,2-dicarbonyls, enamines, enols, electron-rich arenes, amidines, azomethine ylides, azirines, diazo compounds, and many others, is reviewed. By using these substrates, various biologically active scaffolds, such as heterocycles, carbocycles, spirocycles, polycyclic systems, natural products, and other useful acyclic compounds, were prepared. In addition, due to their dielectrophilic character, electrophilic and nucleophilic character, and ability to participate in cycloaddition reactions, bromonitroalkenes were efficiently applied in asymmetric cascade/domino/tandem reactions catalyzed by chiral catalysts. In this manuscript, around 55 papers are summarized and discussed during the years 2000-2023.
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Affiliation(s)
| | - Hoonam Tahvildari
- Department of Chemistry, Sharif University of Technology, Tehran 11155-9516, Iran.
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2
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Liu SL, Lv X, Wang X, Li Z, Huang Q, Jin Q, Zhou L, Fang S. One-Step Syntheses of 3,4-Disubstituted Isochroman-1-ones by the Annulation of Benzoic Acids with Nitroalkenes. J Org Chem 2024; 89:3672-3676. [PMID: 38379290 DOI: 10.1021/acs.joc.4c00059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
The Rh(III)-catalyzed annulation of benzoic acids with nitroalkenes was disclosed to afford a wide range of 3,4-disubstituted isochroman-1-ones with excellent regioselectivity and high catalytic efficiency. Both aromatic and aliphatic nitroalkenes participated in this cyclization reaction successfully. The synthetic value of 3,4-disubstituted isochroman-1-ones was proven by a series of derivatizations. Furthermore, a reliable mechanism is outlined on the basis of experimental investigations and related precedents.
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Affiliation(s)
- Shuang-Liang Liu
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou 450001, P. R. China
| | - Xulin Lv
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou 450001, P. R. China
| | - Xiaoge Wang
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou 450001, P. R. China
| | - Zhaoyang Li
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou 450001, P. R. China
| | - Qinchen Huang
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou 450001, P. R. China
| | - Qingxian Jin
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou 450001, P. R. China
| | - Liming Zhou
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou 450001, P. R. China
| | - Shaoming Fang
- College of Material and Chemical Engineering, and Key Laboratory of Surface & Interface Science and Technology of Henan Province, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou 450001, P. R. China
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3
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Korotaev VY, Kutyashev IB, Sannikov MS, Mishchenko MA, Zavyalova LS, Kochnev IA, Barkov AY, Zimnitskiy NS, Sosnovskikh VY. Tunable Zinc-Mediated Reductive Cyclization of Diastereomeric 3-Nitro-4-phenacyl-2-(trihalomethyl)chromanes to Fused Pyrroline N-Oxides, Pyrrolines, and Pyrrolidines. J Org Chem 2024; 89:1567-1590. [PMID: 38243900 DOI: 10.1021/acs.joc.3c02191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2024]
Abstract
Reductive cyclization of trans,trans- and trans,cis-isomers of the 2-CF3-substituted 3-nitro-4-phenacylchromanes with Zn-based reductive systems, depending on the conditions, affords 4-CF3-substituted 1,3a,4,9b-tetrahydrochromeno[3,4-b]pyrrole 3-oxides, 1,3a,4,9b-tetrahydrochromeno[3,4-b]pyrroles, or 1,2,3,3a,4,9b-hexahydrochromeno[3,4-b]pyrroles in good yields without changing the relative configuration of the pyran ring. A similar process involving the 2-CCl3-substituted 3-nitro-4-phenacylchromanes is accompanied by reductive dehalogenation to form the corresponding 4-dichloromethyl-substituted fused chromanes along with the 3-(2-hydroxyaryl)-2-(2,2-dichlorovinyl)-5-phenyl-2H-pyrroline 1-oxides as pyran ring opening products. The structure and relative configuration of the obtained products was reliably confirmed by X-ray diffraction analysis and 2D NMR spectroscopy.
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Affiliation(s)
- Vladislav Y Korotaev
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| | - Igor B Kutyashev
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| | - Maxim S Sannikov
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| | - Maria A Mishchenko
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| | - Lyudmila S Zavyalova
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| | - Ivan A Kochnev
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| | - Alexey Y Barkov
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| | - Nikolay S Zimnitskiy
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| | - Vyacheslav Y Sosnovskikh
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
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4
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Ghamari Kargar P, Bagherzade G. Advances in the greener synthesis of chromopyrimidine derivatives by a multicomponent tandem oxidation process. Sci Rep 2023; 13:19104. [PMID: 37925547 PMCID: PMC10625593 DOI: 10.1038/s41598-023-46004-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 10/26/2023] [Indexed: 11/06/2023] Open
Abstract
A hydrophilic cobalt/copper heterogeneous bimetallic catalyst named mTEG-CS-Co/Cu-Schiff-base/IL was successfully synthesized from chitosan polysaccharide. The new catalyst was investigated and confirmed using various techniques including FT-IR, FE-SEM, EDX-EDS, XRD, TEM, TGA, AFM, NMR and ICP. The catalyst exhibited powerful catalyst activity for the tandem one pot oxidative chromopyrimidine reaction from benzyl alcohols under mild conditions, utilizing air as a clean source in a green protocol. The catalyst was compatible with a wide range of benzyl alcohols, and aldehydes formed in situ, and bis-aldehydes synthesized were condensed with urea/4‑hydroxycumarin to provide favorable products in good yields for all derivatives (14 new derivatives). The presence of tri-ethylene glycol and imidazolium moieties with hydrophilic properties on the mTEG-CS-Co/Cu-Schiff-base/IL nanohybrid provides dispersion of the nanohybrid particles in water, leading to higher catalytic performance. Furthermore, the reaction exhibited several other notable features, including low catalyst loading, the ability to be recycled for up to 6 stages, high atom economy, a simple work procedure, short reaction time, utilization of an environmentally friendly nanohybrid, and the replacement of volatile and organic solvents with water solvent.
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Affiliation(s)
- Pouya Ghamari Kargar
- Department of Chemistry, Faculty of Sciences, University of Birjand, Birjand, 97175-615, Iran
| | - Ghodsieh Bagherzade
- Department of Chemistry, Faculty of Sciences, University of Birjand, Birjand, 97175-615, Iran.
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Ziyaei Halimehjani A, Ghaffari Z. The chemistry of 2-hydroxy-β-nitrostyrenes: versatile intermediates in synthetic organic chemistry. Org Biomol Chem 2023; 21:2653-2688. [PMID: 36916212 DOI: 10.1039/d3ob00015j] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
The applications of 2-hydroxy-β-nitrostyrenes as efficient bifunctional intermediates in organic synthesis are investigated in this review. For this purpose, reactions of 2-hydroxy-β-nitrostyrenes with diverse molecules, including carbonyl compounds, 1,3-dicarbonyl compounds, α,β-unsaturated carbonyl compounds, hemiacetals, nitroalkenes, γ-butenolides, tetronic acid, azalactones, pyrazolones, enamines, malononitrile, methyleneindolinones, ylides, etc., were investigated to construct interesting biologically active scaffolds such as chromans, chromenes, coumarins, benzofurans and their fused and spiro rings, natural products, and other useful cyclic and acyclic compounds. The main focus is on the asymmetric synthesis of these compounds via cascade/domino/tandem reactions catalyzed by chiral organocatalysts. In this review, around 60 papers reported between the years 2000 and 2022 are presented.
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Affiliation(s)
- Azim Ziyaei Halimehjani
- Department of Chemistry, Sharif University of Technology, P.O. Box 11155-9516, Tehran, Iran. .,Faculty of Chemistry, Kharazmi University, 49 Mofateh St, 15719-14911, Tehran, Iran.
| | - Zahra Ghaffari
- Faculty of Chemistry, Kharazmi University, 49 Mofateh St, 15719-14911, Tehran, Iran.
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6
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Liu SL, Zhao R, Li M, Yang H, Zhou L, Fang S. Synthesis of 2-(2-Nitroalkyl)indoles by Rhodium(III)-Catalyzed C-H Alkylation. Org Lett 2023; 25:1375-1379. [PMID: 36854113 DOI: 10.1021/acs.orglett.3c00057] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
The Rh(III)-catalyzed addition of the indole C2-H bond to nitroalkenes under an ambient atmosphere is disclosed, providing direct access to a wide range of 2-(2-nitroalkyl)indoles (33 examples) with excellent chemo- and regioselectivity. In addition, pyrrole derivatives also successfully participated in this Friedel-Crafts alkylation reaction. Representative nitroalkane products could be converted into structurally diverse and valuable indole derivatives. Furthermore, a series of control experiments were conducted, and a plausible mechanism was proposed.
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Affiliation(s)
- Shuang-Liang Liu
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue Avenue 136, Zhengzhou 450001, People's Republic of China
| | - Ru Zhao
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue Avenue 136, Zhengzhou 450001, People's Republic of China
| | - Menglong Li
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue Avenue 136, Zhengzhou 450001, People's Republic of China
| | - Haoran Yang
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue Avenue 136, Zhengzhou 450001, People's Republic of China
| | - Liming Zhou
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue Avenue 136, Zhengzhou 450001, People's Republic of China
| | - Shaoming Fang
- College of Material and Chemical Engineering and Key Laboratory of Surface and Interface Science and Technology of Henan Province, Zhengzhou University of Light Industry, Kexue Avenue 136, Zhengzhou 450001, People's Republic of China
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7
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Formation of Five- and Six-membered Oxygen-containing Heterocycles on the Basis of 1-halo-1-nitroalkenes. Chem Heterocycl Compd (N Y) 2023. [DOI: 10.1007/s10593-023-03155-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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8
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Winter J, Prenzel T, Wirtanen T, Schollmeyer D, Waldvogel SR. Direct Electrochemical Synthesis of 2,3-Disubstituted Quinoline N-oxides by Cathodic Reduction of Nitro Arenes. Chemistry 2023; 29:e202203319. [PMID: 36426660 DOI: 10.1002/chem.202203319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/23/2022] [Accepted: 11/25/2022] [Indexed: 11/26/2022]
Abstract
The use of electric current in synthetic organic chemistry offers a sustainable tool for the selective reductive synthesis of quinoline N-oxides starting from easily accessible nitro compounds. The reported method employs mild and reagent-free conditions, a simple undivided cell, and constant current electrolysis set-up which provides conversion with a high atom economy. The synthesis of 30 differently substituted quinoline N-oxides was successfully performed in up to 90 % yield. Using CV studies, the mechanism of the selective formation of the quinoline N-oxides was elucidated. The technical relevance of the described reaction could be shown in a 50-fold scale-up reaction.
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Affiliation(s)
- Johannes Winter
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Tobias Prenzel
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Tom Wirtanen
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Dieter Schollmeyer
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Siegfried R Waldvogel
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany.,Institute of Biological and Chemical Systems - Functional Molecular Systems (IBCS-FMS), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
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Bassetti B, Ballini R, Petrini M, Palmieri A. Diastereoselective Conversion of β‐Nitro‐β,γ‐Unsaturated Ketones into Conjugated (
E
,
E
)‐Dienones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202201151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Benedetta Bassetti
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division University of Camerino, ChIP Research Center Via Madonna delle Carceri 62032 Camerino (MC) Italy
| | - Roberto Ballini
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division University of Camerino, ChIP Research Center Via Madonna delle Carceri 62032 Camerino (MC) Italy
| | - Marino Petrini
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division University of Camerino, ChIP Research Center Via Madonna delle Carceri 62032 Camerino (MC) Italy
| | - Alessandro Palmieri
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division University of Camerino, ChIP Research Center Via Madonna delle Carceri 62032 Camerino (MC) Italy
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10
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Different Behavior of 2-Substituted 3-Nitro-2 H-chromenes in the Reaction with Stabilized Azomethine Ylides Generated from α-Iminoesters. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248983. [PMID: 36558115 PMCID: PMC9784934 DOI: 10.3390/molecules27248983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/09/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
The AgOAc-catalysed reaction of 3-nitro-2-phenyl-2H-chromenes with stabilized azomethine ylides generated from the imines based on methyl glycinate and arylaldehydes leads to a mixture of endo and endo' isomers of the corresponding chromeno[3,4-c]pyrrolidines in a ratio of 2.0-2.3:1 in 85-93% total yields as a result of a Michael addition/Mannich reaction sequence. In a similar reaction involving 2-trifluoromethyl-3-nitro-2H-chromenes, only endo chromeno[3,4-c]pyrrolidines are formed in 85-94% yields. 3-Nitro-2-(trichloromethyl)-2H-chromenes under the same conditions react with these azomethine ylides to give the corresponding Michael adducts as individual anti-isomers with the cis,trans-configuration of the chromane ring in 40-67% yields. Some 4-CF3-substituted chromano[3,4-c]pyrrolidines exhibited high cytotoxic activity against HeLa human cervical carcinoma cells.
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11
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Bykova LS, Kochnev IА, Barkov AY, Zimnitskiy NS, Korotaev VY, Sosnovskikh VY. An AgOAc-catalyzed reaction of 3-nitro-2H-chromenes with ethyl diazoacetate: an efficient one-pot synthesis of ethyl 3,4-dihydrochromeno[3,4-c]pyrazole-1-carboxylates. Chem Heterocycl Compd (N Y) 2022. [DOI: 10.1007/s10593-022-03128-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Khanal HD, Perumal M, Lee YR. Annulation strategies for diverse heterocycles via the reductive transformation of 2-nitrostyrenes. Org Biomol Chem 2022; 20:7675-7693. [PMID: 35971908 DOI: 10.1039/d2ob01149b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reduction of the stable nitro group is a fundamental and widely used transformation for the construction of complex and functionalized heterocyclic architectures. The unfolding of the reactivity of the nitro group in the 2-nitrostyrene moiety not only triggers the formation of carbon-nitrogen bonds, but also offers the opportunity for annulation and heteroannulation, thereby providing a cascade process for the synthesis of highly conjugated natural and unnatural molecules. In this review, we comprehensively discuss the use of 2-nitrostyrene motifs in the synthesis of various N-heterocycles. We offer readers an overview of the synthetic achievements achieved to date, highlighting their important features, reactivities, and mechanisms.
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Affiliation(s)
- Hari Datta Khanal
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.
| | - Muthuraja Perumal
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.
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Ma R, Yang H, Ye L, Yang Q, Shi Z, Zhao Z, Li X. Stereoselective Synthesis of Chiral Hydrophenanthridines via a One-Pot Stepwise Aza-Michael/Michael/Michael Process. Org Lett 2022; 24:4798-4803. [PMID: 35758631 DOI: 10.1021/acs.orglett.2c01866] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A one-pot, two-step aza-Michael/Michael/Michael process was developed to diastereospecifically construct C6a,C10a-cis-hydrophenanthridines in a highly enantioselective manner (83-99% ee). The tricyclic products were provided in 50-99% isolated yields, sequentially promoted by bifunctional squaramide and diamine in a one-pot operation. This doubly annulative protocol indicated that the complicated polycyclic structures could be easily constructed via full employment of the available reaction sites of readily prepared precursors.
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Affiliation(s)
- Ruiying Ma
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Hongzhou Yang
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Ling Ye
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Qiang Yang
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Zhichuan Shi
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Zhigang Zhao
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Xuefeng Li
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
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14
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Alvi S, Jayant V, Ali R. Applications of Oxone® in Organic Synthesis: An Emerging Green Reagent of Modern Era. ChemistrySelect 2022. [DOI: 10.1002/slct.202200704] [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)
- Shakeel Alvi
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, Okhla New Delhi 110025 India
| | - Vikrant Jayant
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, Okhla New Delhi 110025 India
| | - Rashid Ali
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, Okhla New Delhi 110025 India
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15
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Ziyaei Halimehjani A, Saeb M, Khalesi M. Multicomponent synthesis of fully substituted thiazoles using glycine-based dithiocarbamates, acetic anhydride and nitroalkenes. Org Biomol Chem 2022; 20:3763-3766. [PMID: 35420106 DOI: 10.1039/d2ob00448h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Reaction of glycine-based dithiocarbamates with nitroalkenes in the presence of acetic anhydride was utilized for the synthesis of fully substituted 2-(alkylsulfanyl)-4-(nitroalkyl)-5-acyloxy-1,3-thiazoles. The reaction proceeds via the in situ formation of thiazol-5(4H)-one from glycine-based dithiocarbamates, followed by the Michael addition of this intermediate to nitroalkenes, aromatization, and esterification reaction cascade. This new one-pot three-component reaction afforded a diverse library of fully substituted thiazoles in high to excellent yields under solvent-free conditions.
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Affiliation(s)
- Azim Ziyaei Halimehjani
- Faculty of Chemistry, Kharazmi University, P. O. Box 15719-14911, 49 Mofateh St., Tehran, Iran.
| | - Maryam Saeb
- Faculty of Chemistry, Kharazmi University, P. O. Box 15719-14911, 49 Mofateh St., Tehran, Iran.
| | - Maryam Khalesi
- Faculty of Chemistry, Kharazmi University, P. O. Box 15719-14911, 49 Mofateh St., Tehran, Iran.
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16
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Affiliation(s)
- Alexander Yu. Rulev
- A. E. Favorsky Institute of Chemistry Siberian Branch of the Russian Academy of Sciences Irkutsk 664033 Russia
| | - Ilya A. Tyumentsev
- A. E. Favorsky Institute of Chemistry Siberian Branch of the Russian Academy of Sciences Irkutsk 664033 Russia
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17
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Pookkandam Parambil S, Pulikkal Veettil S, Dehaen W. The Synthesis of Five-Membered N-Heterocycles by Cycloaddition of Nitroalkenes with (In)Organic Azides and Other 1,3-Dipoles. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1547-0196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractCycloaddition reactions have emerged as rapid and powerful methods for constructing heterocycles and carbocycles. [3+2] Cycloadditions of nitroalkenes with various 1,3-dipoles have been an interesting research area for many organic chemists. This review outlines the synthesis of N-substituted and NH-1,2,3-triazoles along with other five-membered N-heterocycles through cycloaddition reactions of nitroalkenes.1 Introduction2 Synthesis of 1,2,3-Triazoles2.1 Synthesis of NH-1,2,3-Triazoles2.2 Synthesis of N-Substituted 1,2,3-Triazoles3 Synthesis of Pyrrolidines and Pyrroles4 Synthesis of Pyrazoles5 Conclusion
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Affiliation(s)
- Shandev Pookkandam Parambil
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven
- Department of Applied Chemistry, Cochin University of Science and Technology
| | | | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven
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Motornov V, Tabolin A, Ioffe S. Oxidative [3+2]-annulation of nitroalkenes and azolium ylides in the presence of Cu(II): efficient synthesis of [5,5]-annulated N-fused heterocycles. NEW J CHEM 2022. [DOI: 10.1039/d1nj05332a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile synthesis of [5,5]-annulated N-fused heterocycles – pyrrolo[2,1-b]thiazoles and pyrrolo[1,2-b]indazoles via oxidative [3+2]-annulation between nitroalkenes and azolium ylides in the presence of copper (II) was developed. The reaction proceeds...
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19
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Mukherjee S, Iyyappan E, Satheesh K, Maria Jordi E, Saranya S, Samuel Justin SJ, Reuben Jonathan D, Vijay Solomon R, Wilson P. Hydroxyapatite as a bifunctional nanocatalyst for solventless Henry reaction: a demonstration of morphology-dependent catalysis. NEW J CHEM 2022. [DOI: 10.1039/d1nj04283a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydroxyapatite nanorods are catalytically active while nanoplates are inactive towards Henry reaction due to the differences in the exposed surfaces.
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Affiliation(s)
- Smriti Mukherjee
- Department of Chemistry, Madras Christian College (Autonomous), University of Madras, Chennai – 600 059, India
| | - E. Iyyappan
- Department of Chemistry, Madras Christian College (Autonomous), University of Madras, Chennai – 600 059, India
| | - Keerthi Satheesh
- Department of Chemistry, Madras Christian College (Autonomous), University of Madras, Chennai – 600 059, India
| | - Elsa Maria Jordi
- Department of Chemistry, Madras Christian College (Autonomous), University of Madras, Chennai – 600 059, India
| | - S. Saranya
- Department of Chemistry, Madras Christian College (Autonomous), University of Madras, Chennai – 600 059, India
| | - S. J. Samuel Justin
- Department of Chemistry, Madras Christian College (Autonomous), University of Madras, Chennai – 600 059, India
| | - D. Reuben Jonathan
- Department of Chemistry, Madras Christian College (Autonomous), University of Madras, Chennai – 600 059, India
| | - Rajadurai Vijay Solomon
- Department of Chemistry, Madras Christian College (Autonomous), University of Madras, Chennai – 600 059, India
| | - P. Wilson
- Department of Chemistry, Madras Christian College (Autonomous), University of Madras, Chennai – 600 059, India
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20
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Motornov VA, Tabolin AA, Nenajdenko VG, Ioffe SL. Copper‐Mediated Oxidative [3+2]‐Annulation of Nitroalkenes and Ylides of 1,2‐Diazines: Assembly of Functionalized Pyrrolo[1,2‐b]pyridazines. ChemistrySelect 2021. [DOI: 10.1002/slct.202103189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Vladimir A. Motornov
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky prosp. 47 Moscow 119991 Russia
| | - Andrey A. Tabolin
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky prosp. 47 Moscow 119991 Russia
| | - Valentine G. Nenajdenko
- Department of Chemistry M. V. Lomonosov Moscow State University Leninskie Gory 1 Moscow 119991 Russia
| | - Sema L. Ioffe
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky prosp. 47 Moscow 119991 Russia
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21
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Modified synthesis and structural features of 2-benzylidene-4-nitro-2,5-dihydrothiophene 1,1-dioxides. Chem Heterocycl Compd (N Y) 2021. [DOI: 10.1007/s10593-021-02992-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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22
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Raviola C, Carrera C, Serra M, Palmieri A, Lupidi G, Maestri G, Protti S. Visible‐Light‐Driven Competitive Stereo‐ and Regioisomerization of (
E
)‐β‐Nitroenones. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202100081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Carlotta Raviola
- PhotoGreen Lab Department of Chemistry University of Pavia Viale Taramelli 10 27100 Pavia Italy
| | - Cristina Carrera
- PhotoGreen Lab Department of Chemistry University of Pavia Viale Taramelli 10 27100 Pavia Italy
- Department of Drug Sciences University of Pavia Viale Taramelli 12 27100 Pavia Italy
| | - Massimo Serra
- Department of Drug Sciences University of Pavia Viale Taramelli 12 27100 Pavia Italy
| | - Alessandro Palmieri
- Green Chemistry Group -School of Science and Technology Chemistry Division University of Camerino Via S. Agostino 1 62032 Camerino Italy
| | - Gabriele Lupidi
- Green Chemistry Group -School of Science and Technology Chemistry Division University of Camerino Via S. Agostino 1 62032 Camerino Italy
| | - Giovanni Maestri
- Department of Chemistry, Life Sciences and Environmental Sustainability University of Parma Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Stefano Protti
- PhotoGreen Lab Department of Chemistry University of Pavia Viale Taramelli 10 27100 Pavia Italy
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23
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Pradhan S, Thiyagarajan S, Gunanathan C. Ruthenium(ii)-catalysed 1,2-selective hydroboration of aldazines. Org Biomol Chem 2021; 19:7147-7151. [PMID: 34369947 DOI: 10.1039/d1ob01218e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, an efficient and simple catalytic method for the selective and partial reduction of aldazines using ruthenium catalyst [Ru(p-cymene)Cl2]2 (1) has been accomplished. Under mild conditions, aldazines undergo the addition of pinacolborane in the presence of a ruthenium catalyst, which delivered N-boryl-N-benzyl hydrazone products. Notably, the reaction is highly selective, and results in exclusive mono-hydroboration and desymmetrization of symmetrical aldazines. Mechanistic studies indicate the involvement of in situ formed intermediate [{(η6-p-cymene)RuCl}2(μ-H-μ-Cl)] (1a) in this selective hydroboration.
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Affiliation(s)
- Subham Pradhan
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, Khurda-752050, India.
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24
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Majee D, Goud SB, Guin S, Rathor SS, Patel AK, Samanta S. Reversal Reactivity of β‐Alkylnitroalkenes as 1,3‐Binucleophiles: Application to Nitroarenes using Organocatalysis. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100216] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Debashis Majee
- Department Chemistry Indian Institute of Technology Indore Simrol 453552 Indore India
| | - S Banuprakash Goud
- Department Chemistry Indian Institute of Technology Indore Simrol 453552 Indore India
| | - Soumitra Guin
- Department Chemistry Indian Institute of Technology Indore Simrol 453552 Indore India
| | - Shikha S. Rathor
- Department Chemistry Indian Institute of Technology Indore Simrol 453552 Indore India
| | - Ashvani K. Patel
- Department Chemistry Indian Institute of Technology Indore Simrol 453552 Indore India
| | - Sampak Samanta
- Department Chemistry Indian Institute of Technology Indore Simrol 453552 Indore India
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25
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Motornov VA, Tabolin AA, Nelyubina YV, Nenajdenko VG, Ioffe SL. Copper-catalyzed [3 + 2]-cycloaddition of α-halonitroalkenes with azomethine ylides: facile synthesis of multisubstituted pyrrolidines and pyrroles. Org Biomol Chem 2021; 19:3413-3427. [PMID: 33899878 DOI: 10.1039/d1ob00146a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient route for the synthesis of multifunctionalized pyrrolidines based on copper-catalyzed diastereoselective [3 + 2]-cycloaddition of nitroalkenes with azomethine ylides was developed. Novel fluorinated heterocycles - β-fluoro-β-nitropyrrolidines - were accessed via this method. The products can be prepared in good to excellent yields and with high diastereoselectivity. Subsequent transformations of pyrrolidines including oxidative aromatization into fluorinated pyrrolines and medicinally attractive β-fluoro-NH-pyrroles as well as chemoselective reduction reactions were demonstrated. Application of the developed procedures for the non-fluorinated analogues was demonstrated to lead to various β-substituted pyrrole derivatives.
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Affiliation(s)
- Vladimir A Motornov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prosp. 47, Moscow, 119991, Russia.
| | - Andrey A Tabolin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prosp. 47, Moscow, 119991, Russia.
| | - Yulia V Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str. 28, Moscow, 119991, Russia
| | - Valentine G Nenajdenko
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
| | - Sema L Ioffe
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prosp. 47, Moscow, 119991, Russia.
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26
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Peng CJ, Pei JP, Chen YH, Wu ZY, Liu M, Liu YK. Enantioselective organocatalytic sequential Michael-cyclization of functionalized nitroalkanes to 2-hydroxycinnamaldehydes: synthesis of benzofused dioxa[3.3.1] and oxa[4.3.1] methylene-bridged compounds. Org Chem Front 2021. [DOI: 10.1039/d1qo00501d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An organocatalytic enantioselective conjugate addition-initiated reaction sequence of 2-hydroxycinnamaldehydes with various functionalized nitroalkanes has been described to synthesize structurally diverse chromane-containing compounds.
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Affiliation(s)
- Chen-Jun Peng
- Molecular Synthesis Center & Key Laboratory of Marine Drugs
- Ministry of Education
- School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
| | - Jun-Ping Pei
- Molecular Synthesis Center & Key Laboratory of Marine Drugs
- Ministry of Education
- School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
| | - Ying-Han Chen
- Molecular Synthesis Center & Key Laboratory of Marine Drugs
- Ministry of Education
- School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
| | - Zhi-Yong Wu
- Molecular Synthesis Center & Key Laboratory of Marine Drugs
- Ministry of Education
- School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
| | - Ming Liu
- Molecular Synthesis Center & Key Laboratory of Marine Drugs
- Ministry of Education
- School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
| | - Yan-Kai Liu
- Molecular Synthesis Center & Key Laboratory of Marine Drugs
- Ministry of Education
- School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
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27
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Nikpassand M, Zare Fekri L, Naddaf Rahro P. Solvent-free Synthesis and DFT Studies on Mechanistic Pathway of 4-Aryl-4,10-Dihydroindeno[1,2-b]Pyrazolo[4,3-e]Pyridin-5(1H)-ones. Polycycl Aromat Compd 2020. [DOI: 10.1080/10406638.2020.1855217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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28
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Sukhorukov AY. Editorial: Nitro Compounds as Versatile Building Blocks for the Synthesis of Pharmaceutically Relevant Substances. Front Chem 2020; 8:595246. [PMID: 33195101 PMCID: PMC7604505 DOI: 10.3389/fchem.2020.595246] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Accepted: 09/03/2020] [Indexed: 11/26/2022] Open
Affiliation(s)
- Alexey Yu Sukhorukov
- Laboratory of Organic and Metal-Organic Nitrogen-Oxygen Systems, N. D. Zelinsky Institute of Organic Chemistry, Moscow, Russia.,Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, Moscow, Russia
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29
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Petrillo G, Benzi A, Bianchi L, Maccagno M, Pagano A, Tavani C, Spinelli D. Recent advances in the use of conjugated nitro or dinitro-1,3-butadienes as building-blocks for the synthesis of heterocycles. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152297] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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30
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Motornov VA, Tabolin AA, Nelyubina YV, Nenajdenko VG, Ioffe SL. Acid‐Mediated Three Component Assembly of 4‐Fluoropyrazoles from α‐Fluoronitroalkenes, Hydrazines, and Aldehydes. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000841] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Vladimir A. Motornov
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky prosp. 47 119991 Moscow Russia
- Higher Chemical College D. I. Mendeleev University of Chemical Technology of Russia Miusskaya sq. 9 125047 Moscow Russia
| | - Andrey A. Tabolin
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky prosp. 47 119991 Moscow Russia
| | - Yulia V. Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciencesm Vavilov str. 28 119991 Moscow Russia
| | - Valentine G. Nenajdenko
- Department of Chemistry M. V. Lomonosov Moscow State University Leninskie Gory 1 119991 Moscow Russia
| | - Sema L. Ioffe
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky prosp. 47 119991 Moscow Russia
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31
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Pelipko VV, Kuritsynа MA, Baichurin RI, Makarenko SV. Alkyl 3-Nitroacrylates in the Reactions with Heterocyclic CH Acids. RUSS J GEN CHEM+ 2020. [DOI: 10.1134/s1070363220080034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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Asahara H, Hiraishi M, Nishiwaki N. One-pot and metal-free synthesis of 3-arylated-4-nitrophenols via polyfunctionalized cyclohexanones from β-nitrostyrenes. Beilstein J Org Chem 2020; 16:1830-1836. [PMID: 32765798 PMCID: PMC7385393 DOI: 10.3762/bjoc.16.150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 07/15/2020] [Indexed: 12/28/2022] Open
Abstract
β-Nitrostyrenes underwent a Diels-Alder reaction with Danishefsky's diene to afford cyclohexenes together with the corresponding hydrolyzed products, 3-arylated-5-methoxy-4-nitrocyclohexanones. When the reaction was conducted in the presence of water, the cyclohexenes were efficiently hydrolyzed into cyclohexanones. Subsequent aromatization by heating the cyclohexanone with a catalytic amount of iodine in dimethyl sulfoxide gave 3-arylated-4-nitrophenols. The reaction of nitrostyrenes with Danishefsky's diene could be conducted in one pot to directly afford the corresponding nitrophenols. Moreover, a heteroaryl group, e.g., a thienyl group could be introduced into the nitrophenol framework.
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Affiliation(s)
- Haruyasu Asahara
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
- Research Center for Molecular Design, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
- Graduate School of Pharmaceutical Sciences, Osaka University, Yamadaoka 1-6, Suita, Osaka 565-0871, Japan
| | - Minami Hiraishi
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
| | - Nagatoshi Nishiwaki
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
- Research Center for Molecular Design, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
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33
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Dell'Aera M, Perna FM, Vitale P, Altomare A, Palmieri A, Maddock LCH, Bole LJ, Kennedy AR, Hevia E, Capriati V. Boosting Conjugate Addition to Nitroolefins Using Lithium Tetraorganozincates: Synthetic Strategies and Structural Insights. Chemistry 2020; 26:8742-8748. [PMID: 32181938 DOI: 10.1002/chem.202001294] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Indexed: 11/09/2022]
Abstract
We report the first transition metal catalyst- and ligand-free conjugate addition of lithium tetraorganozincates (R4 ZnLi2 ) to nitroolefins. Displaying enhanced nucleophilicity combined with unique chemoselectivity and functional group tolerance, homoleptic aliphatic and aromatic R4 ZnLi2 provide access to valuable nitroalkanes in up to 98 % yield under mild conditions (0 °C) and short reaction time (30 min). This is particularly remarkable when employing β-nitroacrylates and β-nitroenones, where despite the presence of other electrophilic groups, selective 1,4 addition to the C=C is preferred. Structural and spectroscopic studies confirmed the formation of tetraorganozincate species in solution, the nature of which has been a long debated issue, and allowed to unveil the key role played by donor additives on the aggregation and structure of these reagents. Thus, while chelating N,N,N',N'-tetramethylethylenediamine (TMEDA) and (R,R)-N,N,N',N'-tetramethyl-1,2-diaminocyclohexane (TMCDA) favour the formation of contacted-ion pair zincates, macrocyclic Lewis donor 12-crown-4 triggers an immediate disproportionation process of Et4 ZnLi2 into equimolar amounts of solvent-separated Et3 ZnLi and EtLi.
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Affiliation(s)
- Marzia Dell'Aera
- Dipartimento di Farmacia-Scienze del Farmaco, Università di Bari "A. Moro", Consorzio C.I.N.M.P.I.S., Via E. Orabona 4, 70125, Bari, Italy.,Istituto di Cristallografia (IC-CNR), Via Amendola 122/o, 70125, Bari, Italy
| | - Filippo Maria Perna
- Dipartimento di Farmacia-Scienze del Farmaco, Università di Bari "A. Moro", Consorzio C.I.N.M.P.I.S., Via E. Orabona 4, 70125, Bari, Italy
| | - Paola Vitale
- Dipartimento di Farmacia-Scienze del Farmaco, Università di Bari "A. Moro", Consorzio C.I.N.M.P.I.S., Via E. Orabona 4, 70125, Bari, Italy
| | - Angela Altomare
- Istituto di Cristallografia (IC-CNR), Via Amendola 122/o, 70125, Bari, Italy
| | - Alessandro Palmieri
- School of Science and Technology, Chemistry Division, University of Camerino, Via S. Agostino 1, 62032, Camerino, Italy
| | - Lewis C H Maddock
- Department of Pure and Applied Chemistry, University of Strathclyde Glasgow, G1 1XL, Glasgow, UK
| | - Leonie J Bole
- Department für Chemie und Biochemie, Universität Bern, 3012, Bern, Switzerland
| | - Alan R Kennedy
- Department of Pure and Applied Chemistry, University of Strathclyde Glasgow, G1 1XL, Glasgow, UK
| | - Eva Hevia
- Department für Chemie und Biochemie, Universität Bern, 3012, Bern, Switzerland
| | - Vito Capriati
- Dipartimento di Farmacia-Scienze del Farmaco, Università di Bari "A. Moro", Consorzio C.I.N.M.P.I.S., Via E. Orabona 4, 70125, Bari, Italy.,Dipartimento di Chimica, Istituto di Chimica dei Composti Organometallici (ICCOM)-CNR, Università di Bari "A. Moro", Via E. Orabona 4, 70125, Bari, Italy
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34
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Palmieri A. Synthesis of Heterocyclic Systems Starting from Carbonyl and Carboxyl Functionalized Nitro Compounds by One-Pot Processes. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000079] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Alessandro Palmieri
- Green Chemistry Group; School of Science and Technology; Chemistry Division; University of Camerino; Via S. Agostino n. 1 62032 Camerino Italy
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35
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Motornov VA, Tabolin AA, Nelyubina YV, Nenajdenko VG, Ioffe SL. Copper-mediated oxidative [3 + 2]-annulation of nitroalkenes and pyridinium imines: efficient synthesis of 3-fluoro- and 3-nitro-pyrazolo[1,5-a]pyridines. Org Biomol Chem 2020; 18:1436-1448. [PMID: 32022079 DOI: 10.1039/c9ob02668a] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
An efficient route to pyrazolo[1,5-a]pyridines by Cu(OAc)2-promoted oxidative [3 + 2]-annulation of nitroalkenes with in situ generated pyridinium imines is developed. The reaction with α-fluoronitroalkenes enables the first preparative synthesis of 3-fluoro-pyrazolo[1,5-a]pyridines. Cycloaddition with α-unsubstituted nitroalkenes provides access to 3-nitro-pyrazolo[1,5-a]pyridines in excellent yields. A broad transformation scope was demonstrated. Both electron-rich and electron-deficient nitroalkenes as well as different aminopyridinium salts can be used for the assembly of the target pyrazolo[1,5-a]pyridines. The related aza-heterocycles, namely, pyrazolo[1,5-a]pyrazines and pyrazolo[1,5-b]pyridazines, were successfully prepared via the present methodology. The possible mechanism of the reaction is discussed.
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Affiliation(s)
- Vladimir A Motornov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prosp. 47, Moscow, 119991, Russia. and Higher Chemical College, D. I. Mendeleev University of Chemical Technology of Russia, Miusskaya sq. 9, Moscow, 125047, Russia
| | - Andrey A Tabolin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prosp. 47, Moscow, 119991, Russia.
| | - Yulia V Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str. 28, Moscow, 119991, Russia
| | - Valentine G Nenajdenko
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow, 119991, Russia
| | - Sema L Ioffe
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prosp. 47, Moscow, 119991, Russia.
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36
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Mishra A, Bhowmik A, Samanta S, Sarkar W, Das S, Deb I. Diastereoselective Spirocyclization of Benzoxazines with Nitroalkenes via Rhodium-Catalyzed C–H Functionalization/Annulation Cascade under Mild Conditions. Org Lett 2020; 22:1340-1344. [DOI: 10.1021/acs.orglett.9b04652] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Aniket Mishra
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Arup Bhowmik
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Siddhartha Samanta
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Writhabrata Sarkar
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Sumit Das
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Indubhusan Deb
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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37
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Ali S, Gattu R, Singh V, Mondal S, Khan AT, Dubey G, Bharatam PV. Reaction behaviour of arylamines with nitroalkenes in the presence of bismuth(iii) triflate: an easy access to 2,3-dialkylquinolines. Org Biomol Chem 2020; 18:1785-1793. [DOI: 10.1039/c9ob02214g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We report the reaction behaviour of arylamines with nitroalkenes in the presence of bismuth(iii) triflate (10 mol%) and diacetoxyiodobenzene (10 mol%).
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Affiliation(s)
- Saghir Ali
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Radhakrishna Gattu
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Varun Singh
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Santa Mondal
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Abu T. Khan
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Gurudutt Dubey
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- S.A.S. Nagar-160062
- India
| | - P. V. Bharatam
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- S.A.S. Nagar-160062
- India
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38
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Rao MP, Gunaga SS, Zuegg J, Pamarthi R, Ganesh M. Highly regio- and diastereoselective [3 + 2]-cycloadditions involving indolediones and α,β-disubstituted nitroethylenes. Org Biomol Chem 2019; 17:9390-9402. [PMID: 31631197 DOI: 10.1039/c9ob01429b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A highly diastereoselective [3 + 2]-cycloaddition strategy involving multiple oxindoles and several α,β-disubstituted nitroethylenes is developed to access tetra-substituted α-spiropyrrolidine frameworks. A variety of α-amino acids were employed for the first time in order to generate azomethine ylides under thermal conditions, affording regioisomers 13 and 14 merely by changing the α-substituents (R = H and substituted carbons) of the α-amino acids. The reaction tolerates various sterically demanding, electron-rich and electron-deficient aryl and nitrogen substituents on glycines, oxindoles and nitroethylenes. The operational simplicity, such as the use of a metal-free and non-inert environment, the utilization of non-halogenated solvents and the ease of isolation, adhering to the principles of green chemistry, makes this process attractive for scale-up opportunities. The reaction delivers good yields (80-94%) and diastereoselectivities (up to 98 : 2) in favor of (cis,cis)-spirooxindoles, with opposite regioselectivity compared to β-nitrostyrenes under identical conditions. Two spiropyrrolidine cycloadducts with unprotected amides exhibited significant activity against Gram-positive MRSA.
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Affiliation(s)
- Madhuri P Rao
- Department of Chemistry, B.M.S College of Engineering, Bull Temple Road, Bengaluru 560019, India.
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Karki BS, Devi L, Pokhriyal A, Kant R, Rastogi N. Visible Light‐Induced, Metal‐Free Denitrative [3+2] Cycloaddition for Trisubstituted Pyrrole Synthesis. Chem Asian J 2019; 14:4793-4797. [DOI: 10.1002/asia.201901068] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 10/09/2019] [Indexed: 12/30/2022]
Affiliation(s)
- Bhupal S. Karki
- Medicinal & Process Chemistry DivisionCSIR-Central Drug Research Institute, Sec. 10, Jankipuram Extension Sitapur Road, P.O. Box 173 Lucknow 226031 India
- Academy of Scientific and Innovative Research New Delhi 110001 India
| | - Lalita Devi
- Medicinal & Process Chemistry DivisionCSIR-Central Drug Research Institute, Sec. 10, Jankipuram Extension Sitapur Road, P.O. Box 173 Lucknow 226031 India
- Academy of Scientific and Innovative Research New Delhi 110001 India
| | - Ayushi Pokhriyal
- Medicinal & Process Chemistry DivisionCSIR-Central Drug Research Institute, Sec. 10, Jankipuram Extension Sitapur Road, P.O. Box 173 Lucknow 226031 India
| | - Ruchir Kant
- Molecular & Structural Biology DivisionCSIR-Central Drug Research Institute, Sec. 10, Jankipuram Extension Sitapur Road, P.O. Box 173 Lucknow 226031 India
| | - Namrata Rastogi
- Medicinal & Process Chemistry DivisionCSIR-Central Drug Research Institute, Sec. 10, Jankipuram Extension Sitapur Road, P.O. Box 173 Lucknow 226031 India
- Academy of Scientific and Innovative Research New Delhi 110001 India
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3-Nitro-2H-chromenes in [3+2] cycloaddition reaction with azomethine ylides derived from N-unsubstituted α-amino acids and isatins: regio- and stereoselective synthesis of spirochromeno[3,4-c]pyrrolidines. Chem Heterocycl Compd (N Y) 2019. [DOI: 10.1007/s10593-019-02490-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Lv N, Chen Z, Liu Y, Liu Z, Zhang Y. Rhodium‐Catalyzed Cascade Annulation of Benzimidates and Nitroalkenes for the Synthesis of Difunctionalized Indenes. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900427] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ningning Lv
- Department of Chemistry, ZJU-NHU United R&D Center Zhejiang University Hangzhou 310027 People's Republic of China
| | - Zhengkai Chen
- Department of Chemistry Zhejiang Sci-Tech University Hangzhou 310018 People's Republic of China
| | - Yue Liu
- Department of Chemistry, ZJU-NHU United R&D Center Zhejiang University Hangzhou 310027 People's Republic of China
| | - Zhanxiang Liu
- Department of Chemistry, ZJU-NHU United R&D Center Zhejiang University Hangzhou 310027 People's Republic of China
| | - Yuhong Zhang
- Department of Chemistry, ZJU-NHU United R&D Center Zhejiang University Hangzhou 310027 People's Republic of China
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 People's Republic of China
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Rokhum L, Bez G. Recent Application of Polystyrene-supported Triphenylphosphine in Solid-Phase Organic Synthesis. CURR ORG CHEM 2019. [DOI: 10.2174/1385272822666181026115752] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Recent years have witnessed a fast development of solid phase synthetic pathways, a variety of solid-supported reagent and its applications in diverse synthetic strategies and pharmaceutical applicability’s. Polymer-supported triphenylphosphine is getting a lot of applications owing to the speed and simplicity in the process. Furthermore, ease of recyclability and reuse of polymer-supported triphenylphosphine added its advantages. This review covers a wide range of useful organic transformations which are accomplished using cross-linked polystyrene-supported triphenylphosphine with the aim of giving renewed interest in the field of organic and medicinal-combinatorial chemistry.
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Affiliation(s)
- Lalthazuala Rokhum
- Department of Chemistry, National Institute of Technology, Silchar-788010, India
| | - Ghanashyam Bez
- Department of Chemistry, North Eastern Hill University, Shillong-793022, India
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43
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Gudise VB, Settipalli PC, Reddy EK, Anwar S. Oxa-Michael-Michael Reaction of MBH Alcohol and 2-Arylidene-1,3-indanedione: Regioselective Formal [4+2] Cycloaddition towards Tetrahydrospiropyran Scaffolds. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801709] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Veera Babu Gudise
- Division of Chemistry; Department of Sciences and Humanities; Vignan's Foundation for Science, Technology and Research (Deemed to be University); Vadlamudi 522 213 Guntur - Andhra Pradesh India
| | - Poorna Chandrasekhar Settipalli
- Division of Chemistry; Department of Sciences and Humanities; Vignan's Foundation for Science, Technology and Research (Deemed to be University); Vadlamudi 522 213 Guntur - Andhra Pradesh India
| | - Eeda Koti Reddy
- Division of Chemistry; Department of Sciences and Humanities; Vignan's Foundation for Science, Technology and Research (Deemed to be University); Vadlamudi 522 213 Guntur - Andhra Pradesh India
| | - Shaik Anwar
- Division of Chemistry; Department of Sciences and Humanities; Vignan's Foundation for Science, Technology and Research (Deemed to be University); Vadlamudi 522 213 Guntur - Andhra Pradesh India
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Mishra A, Mukherjee U, Sarkar W, Meduri SL, Bhowmik A, Deb I. Diastereoselective Spirocyclization of Cyclic N-Sulfonyl Ketimines with Nitroalkenes via Iridium-Catalyzed Redox-Neutral Cascade Reaction. Org Lett 2019; 21:2056-2059. [DOI: 10.1021/acs.orglett.9b00295] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aniket Mishra
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Upasana Mukherjee
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Writhabrata Sarkar
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Sudha Lahari Meduri
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Arup Bhowmik
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Indubhusan Deb
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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Nikpassand M, Fekri LZ, Rahro PN. Catalyst-free grinding method: a new avenue for synthesis of 6-amino-3-methyl-4-aryl-1H-pyrazolo[3,4-b]pyridine-5-carbonitrile and DFT studies on the mechanistic pathway of this category of compounds. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-018-3701-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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46
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Gattu R, Mondal S, Ali S, Khan AT. Iodine monobromide catalysed regioselective synthesis of 3-arylquinolines from α-aminoacetophenones and trans-β-nitrostyrenes. Org Biomol Chem 2019; 17:347-353. [DOI: 10.1039/c8ob02333f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A simple and efficient method for regioselective synthesis of 3-arylquinolines is described from α-aminoacetophenones and trans-β-nitrostyrenes using 20 mol% iodine monobromide as a catalyst in acetonitrile solvent at 80 °C.
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Affiliation(s)
- Radhakrishna Gattu
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
| | - Santa Mondal
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
| | - Saghir Ali
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
| | - Abu T. Khan
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
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Mane V, Baiju TV, Namboothiri INN. Synthesis of Functionalized Thieno[2,3- b]indoles via One-Pot Reaction of Indoline-2-thiones with Morita-Baylis-Hillman and Rauhut-Currier Adducts of Nitroalkenes. ACS OMEGA 2018; 3:17617-17628. [PMID: 31458362 PMCID: PMC6643647 DOI: 10.1021/acsomega.8b02147] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 11/07/2018] [Indexed: 06/10/2023]
Abstract
A straightforward protocol for the synthesis of functionalized thieno[2,3-b]indoles by base-mediated [3 + 2]-annulation of indoline-2-thione with Morita-Baylis-Hillman and Rauhut-Currier adducts of nitroalkenes is described. Complete regioselectivity, broad substrate scope, and mild reaction conditions make this strategy very valuable. Moreover, the thieno[2,3-b]indoles comprising functional groups such as hydrazine and ketoalkyl moieties are amenable for further synthetic elaboration.
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48
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Joy M, Joseph N, Mary V, Jose V, Sudarsanakumar C. Supramolecular framework of conjugated nitro-alkenes: Crystallographic and hirshfeld surface scan. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.07.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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49
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Wang J, Pan X, Liu J, Zhao L, Zhi Y, Zhao K, Hu L. Diastereoselective Synthesis of Tetrahydroquinolines via [4 + 2] Annulation between in Situ Generated p-Quinone Methides and Nitroalkenes. Org Lett 2018; 20:5995-5998. [DOI: 10.1021/acs.orglett.8b02127] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Junwei Wang
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, Stake Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Xiang Pan
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, Stake Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Jian Liu
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, Stake Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Lin Zhao
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, Stake Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Ying Zhi
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, Stake Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Kun Zhao
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, Stake Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Lihong Hu
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, Stake Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
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50
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Synthesis of ( Z )-nitroalkene derivatives through oxidative dehydrogenation coupling of α -aminocarbonyl compounds with nitromethane by copper catalysis. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.07.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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