1
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Arunkirirote P, Suwalak P, Chaisan N, Tummatorn J, Ruchirawat S, Thongsornkleeb C. Electron Donor-Acceptor Complex-Enabled Autoinductive Conversion of Acylnitromethanes to Acylnitrile Oxides in a Photochemical Machetti-De Sarlo Reaction: Synthesis of 5-Substituted 3-Acylisoxazoles. Org Lett 2024. [PMID: 39213530 DOI: 10.1021/acs.orglett.4c02708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
A photochemical Machetti-De Sarlo reaction has been developed for preparing 5-substituted 3-acylisoxazoles from acylnitromethanes and terminal alkynes. This photochemical protocol utilizes an innovative electron donor-acceptor complex, generated in situ from acylnitromethanes, catalytic LiOtBu, and 1,1,1,3,3,3-hexafluoro-2-propanol, as a photosensitizer to promote rapid conversion with a broad substrate scope in up to 80% efficiency. A sigmoidal autoinductive kinetic profile is revealed, demonstrating the novel and unique dual catalysis in the first photochemical approach of this reaction.
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Affiliation(s)
- Piyaporn Arunkirirote
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Pornteera Suwalak
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Nattawadee Chaisan
- Program on Chemical Sciences, Chulabhorn Graduate Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Jumreang Tummatorn
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
- Program on Chemical Sciences, Chulabhorn Graduate Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
- Center of Excellence on Environmental Health and Toxicology (EHT), Office of the Permanent Secretary (OPS), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok 10400, Thailand
| | - Somsak Ruchirawat
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
- Program on Chemical Sciences, Chulabhorn Graduate Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
- Center of Excellence on Environmental Health and Toxicology (EHT), Office of the Permanent Secretary (OPS), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok 10400, Thailand
| | - Charnsak Thongsornkleeb
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
- Program on Chemical Sciences, Chulabhorn Graduate Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
- Center of Excellence on Environmental Health and Toxicology (EHT), Office of the Permanent Secretary (OPS), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok 10400, Thailand
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2
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La Penna G, Machetti F. Probing Reactivity with External Forces: The Case of Nitroacetamides in Water. Molecules 2023; 29:9. [PMID: 38202592 PMCID: PMC10780269 DOI: 10.3390/molecules29010009] [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: 10/18/2023] [Revised: 12/11/2023] [Accepted: 12/15/2023] [Indexed: 01/12/2024] Open
Abstract
Many computational methods have been applied to interpret and predict changes in reactivity by slight modifications of a given molecular scaffold. We describe a novel and simple method based on approximate density-functional theory of valence electrons that can be applied within a large high-performance computational infrastructure to probe such changes using a statistical sample of molecular configurations, including the solvent. All the used computational tools are fully open-source. Following our previous application, we are able to explain the high acidity of C-H bond at α position in nitro compounds when the amide linkage an ammonium group is inserted into the α substituent.
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Affiliation(s)
- Giovanni La Penna
- Istituto di Chimica dei Composti Organometallici (ICCOM), Consiglio Nazionale delle Ricerche (CNR), via Madonna Del Piano 10, I-50019 Firenze, Italy;
- Section of Roma-Tor Vergata, Istituto Nazionale di Fisica Nucleare (INFN), via della Ricerca Scientifica 1, I-00133 Roma, Italy
| | - Fabrizio Machetti
- Istituto di Chimica dei Composti Organometallici (ICCOM), Consiglio Nazionale delle Ricerche (CNR), c/o Dipartimento di Chimica “Ugo Schiff”, via Della Lastruccia 13, I-50019 Firenze, Italy
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3
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De Sarlo F, Machetti F. Primary nitro compounds: progress in the synthesis of isoxazoles by condensation with aldehydes or activated ketones. Org Biomol Chem 2023; 21:7255-7266. [PMID: 37646329 DOI: 10.1039/d3ob00960b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Among the known strategies directed towards the synthesis of isoxazole derivatives, the reactions of aldehydes with primary nitro compounds deserve a comprehensive treatment, including the historical development as well as the more recent applications. The reactions of aldehydes with primary nitro compounds in a 1 : 2 molar ratio have been shown to lead to isoxazoline-N-oxides or isoxazole derivatives, via β-dinitro derivatives. Several modifications of the process allowed the formation of products bearing substituents at various positions of the heterocyclic ring with control of regioselectivity. Ketones are reported to react with primary nitro compounds, only if activated (β-diketones, α-nitroketones, or strained ketones), to give isoxazole derivatives. Symmetric 2,4-dinitroglutarates formed from aromatic aldehydes and nitroacetate undergo ring closure to form isoxazole derivatives or, according to reaction conditions, 5-hydroxy-6-oxo-4-aryl-6H-1,2-oxazine-3-carboxylates ("oxazinones"), by loss of alcohol instead of water. Isoxazole-4-carbaldehydes are obtained by the reaction of 3-oxetanone with primary nitro compounds.
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Affiliation(s)
- Francesco De Sarlo
- Dipartimento di Chimica "Ugo Schiff" dell' Università degli Studi di Firenze, Via della Lastruccia 13, 50019 Sesto Fiorentino, Firenze, Italy
| | - Fabrizio Machetti
- Istituto di Chimica dei Composti Organometallici del Consiglio Nazionale delle Ricerche c/o Dipartimento di Chimica "Ugo Schiff" dell' Università degli Studi di Firenze, Via della Lastruccia 13, 50019 Sesto Fiorentino, Firenze, Italy.
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4
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Yu Y, Lin R, Yu H, Liu M, Xing E, Wang W, Zhang F, Zhao D, Li X. Versatile synthesis of metal-compound based mesoporous Janus nanoparticles. Nat Commun 2023; 14:4249. [PMID: 37460612 DOI: 10.1038/s41467-023-40017-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 07/06/2023] [Indexed: 07/20/2023] Open
Abstract
The construction of mesoporous Janus nanoparticles (mJNPs) with controllable components is of great significance for the development of sophisticated nanomaterials with synergistically enhanced functionalities and applications. However, the compositions of reported mJNPs are mainly the functionally inert SiO2 and polymers. The universal synthesis of metal-compound based mJNPs with abundant functionalities is urgently desired, but remains a substantial challenge. Herein, we present a hydrophilicity mediated interfacial selective assembly strategy for the versatile synthesis of metal-compound based mJNPs. Starting from the developed silica-based mJNPs with anisotropic dual-surface of hydrophilic SiO2 and hydrophobic organosilica, metal precursor can selectively deposit onto the hydrophilic SiO2 subunit to form the metal-compound based mJNPs. This method shows good universality and can be used for the synthesis of more than 20 kinds of metal-compound based mJNPs, including alkali-earth metal compounds, transition metal compounds, rare-earth metal compounds etc. Besides, the composition of the metal-compound subunit can be well tuned from single to multiple metal elements, even high-entropy complexes. We believe that the synthesis method and obtained new members of mJNPs provide a very broad platform for the construction and application of mJNPs with rational designed functions and structures.
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Affiliation(s)
- Yan Yu
- Department of Chemistry, Shanghai Stomatological Hospital & School of Stomatology, State Key Laboratory of Molecular Engineering of Polymers, iChem, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China
| | - Runfeng Lin
- Department of Chemistry, Shanghai Stomatological Hospital & School of Stomatology, State Key Laboratory of Molecular Engineering of Polymers, iChem, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China
| | - Hongyue Yu
- Department of Chemistry, Shanghai Stomatological Hospital & School of Stomatology, State Key Laboratory of Molecular Engineering of Polymers, iChem, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China
| | - Minchao Liu
- Department of Chemistry, Shanghai Stomatological Hospital & School of Stomatology, State Key Laboratory of Molecular Engineering of Polymers, iChem, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China
| | - Enyun Xing
- Department of Chemistry, Shanghai Stomatological Hospital & School of Stomatology, State Key Laboratory of Molecular Engineering of Polymers, iChem, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China
| | - Wenxing Wang
- Department of Chemistry, Shanghai Stomatological Hospital & School of Stomatology, State Key Laboratory of Molecular Engineering of Polymers, iChem, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China
| | - Fan Zhang
- Department of Chemistry, Shanghai Stomatological Hospital & School of Stomatology, State Key Laboratory of Molecular Engineering of Polymers, iChem, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China
| | - Dongyuan Zhao
- Department of Chemistry, Shanghai Stomatological Hospital & School of Stomatology, State Key Laboratory of Molecular Engineering of Polymers, iChem, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China
| | - Xiaomin Li
- Department of Chemistry, Shanghai Stomatological Hospital & School of Stomatology, State Key Laboratory of Molecular Engineering of Polymers, iChem, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China.
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5
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Chalyk BA, Khutorianskyi AV, Vashchenko BV, Danyleiko K, Grynyova A, Osipova AO, Kozytskiy A, Syniuchenko D, Tsymbaliuk A, Gavrilenko KS, Biitseva AV, Volochnyuk DM, Komarov IV, Grygorenko OO. Reductive Recyclization of sp 3-Enriched Functionalized Isoxazolines into α-Hydroxy Lactams. J Org Chem 2021; 87:1001-1018. [PMID: 34843235 DOI: 10.1021/acs.joc.1c02301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient synthesis (up to a 200 g scale) of 3-hydroxypyrrolidin-2-ones bearing alkyl substituents or functional groups at the C-5 position is described. The reaction sequence started from 1,3-dipolar cycloaddition of in situ generated nitrile oxides with (meth-)acrylates into 3-substituted isoxazoline-5-carboxylates. The catalytic hydrogenolysis of the isoxazoline N-O bond was optimal upon using H2 (1 atm) at rt, with the following order of the catalyst activity: Pd-C > Pd(OH)2-C > Pt-C. The reactions with Pt-C were more selective for the synthesis of pyrrolidones, while Pd-C provided the fastest conversion rates. The stirring efficiency had a positive impact on conversion rather than elevated temperatures (up to 40 °C) or pressure (up to 50 atm). The diastereoselectivity was governed mainly by steric factors, with a dr of 1:1 to 3:1 (cis- and trans-isomers could be separated). Higher homologues (isoxazolinylacetates and -propanoates) were suitable for the synthesis of 6- or 7-substituted 4-hydroxypiperidones and 5-hydroxyazepanones, respectively. The proposed methods are tolerant to functional groups, including CF3 (but not CHF2 or CH2Cl), ester, and most N-Boc-protected amines. The utility of hydroxyl groups in lactams was shown by functional group transformations. Hydrogenolysis of C(5)-functionalized isoxazolines, bearing trimethylsilyl, phosphonate, or sulfone groups, was also studied to demonstrate limitations.
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Affiliation(s)
- Bohdan A Chalyk
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Street 5, Kyiv 02094, Ukraine
| | - Andrii V Khutorianskyi
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Bohdan V Vashchenko
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Kyrylo Danyleiko
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Anastasiia Grynyova
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Street 5, Kyiv 02094, Ukraine.,Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine
| | - Anastasiia O Osipova
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Andriy Kozytskiy
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,L. V. Pisarzhevskii Institute of Physical Chemistry of National Academy of Sciences of Ukraine, Nauky Avenue, 31, Kyiv 03028, Ukraine
| | - Darya Syniuchenko
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Anton Tsymbaliuk
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Konstantin S Gavrilenko
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Angelina V Biitseva
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Dmitriy M Volochnyuk
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Street 5, Kyiv 02094, Ukraine.,Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Igor V Komarov
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Oleksandr O Grygorenko
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
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6
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Banchelli M, Cascella R, D’Andrea C, La Penna G, Li MS, Machetti F, Matteini P, Pizzanelli S. Probing the Structure of Toxic Amyloid-β Oligomers with Electron Spin Resonance and Molecular Modeling. ACS Chem Neurosci 2021; 12:1150-1161. [PMID: 33724783 PMCID: PMC9284516 DOI: 10.1021/acschemneuro.0c00714] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Structural models of the toxic species involved in the development of Alzheimer's disease are of utmost importance to understand the molecular mechanism and to describe early biomarkers of the disease. Among toxic species, soluble oligomers of amyloid-β (Aβ) peptides are particularly important, because they are responsible for spreading cell damages over brain regions, thus rapidly impairing brain functions. In this work we obtain structural information on a carefully prepared Aβ(1-42) sample, representing a toxic state for cell cultures, by combining electron spin resonance spectroscopy and computational models. We exploited the binding of Cu2+ to Aβ(1-42) and used copper as a probe for estimating Cu-Cu distances in the oligomers by applying double electron-electron resonance (DEER) pulse sequence. The DEER trace of this sample displays a unique feature that fits well with structural models of oligomers formed by Cu-cross-linked peptide dimers. Because Cu is bound to the Aβ(1-42) N-terminus, for the first time structural constraints that are missing in reported studies are provided at physiological conditions for the Aβ N-termini. These constraints suggest the Aβ(1-42) dimer as the building block of soluble oligomers, thus changing the scenario for any kinetic model of Aβ(1-42) aggregation.
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Affiliation(s)
- Martina Banchelli
- National Research Council of Italy, Institute of Applied Physics “Nello Carrara”, Sesto Fiorentino, I-50019 FI, Italy
| | - Roberta Cascella
- University of Florence, Department of Experimental and Clinical Biomedical Sciences, I-50134 Firenze, Italy
| | - Cristiano D’Andrea
- National Research Council of Italy, Institute of Applied Physics “Nello Carrara”, Sesto Fiorentino, I-50019 FI, Italy
| | - Giovanni La Penna
- National Research Council of Italy (CNR), Institute of Chemistry of Organometallic Compounds (ICCOM), Sesto Fiorentino, I-50019 FI, Italy
- National Institute for Nuclear Physics (INFN),
Section of Roma-Tor Vergata, I-00133 Roma, Italy
| | - Mai Suan Li
- Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw, Poland
- Institute for Computational Science and Technology, 6 Quarter, Linh Trung Ward, Thu
Duc District, 700000 Ho Chi Minh City, Vietnam
| | - Fabrizio Machetti
- National Research Council of Italy (CNR), Institute of Chemistry of Organometallic Compounds (ICCOM), Sesto Fiorentino, I-50019 FI, Italy
- University of Florence, Department of Chemistry “Ugo Schiff”, Sesto Fiorentino, I-50019 FI, Italy
| | - Paolo Matteini
- National Research Council of Italy, Institute of Applied Physics “Nello Carrara”, Sesto Fiorentino, I-50019 FI, Italy
| | - Silvia Pizzanelli
- National Research Council of Italy (CNR), Institute of Chemistry of Organometallic Compounds (ICCOM), I-56124 Pisa, Italy
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7
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Wang J, Young TA, Duarte F, Lusby PJ. Synergistic Noncovalent Catalysis Facilitates Base-Free Michael Addition. J Am Chem Soc 2020; 142:17743-17750. [DOI: 10.1021/jacs.0c08639] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jianzhu Wang
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, Scotland EH9 3FJ, United Kingdom
| | - Tom A. Young
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Fernanda Duarte
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Paul J. Lusby
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, Scotland EH9 3FJ, United Kingdom
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8
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Hanopolskyi AI, Smaliak VA, Novichkov AI, Semenov SN. Autocatalysis: Kinetics, Mechanisms and Design. CHEMSYSTEMSCHEM 2020. [DOI: 10.1002/syst.202000026] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Anton I. Hanopolskyi
- Department of Organic Chemistry Weizmann Institute of Science Herzl, 234 7610001 Rehovot Israel
| | - Viktoryia A. Smaliak
- Department of Organic Chemistry Weizmann Institute of Science Herzl, 234 7610001 Rehovot Israel
| | - Alexander I. Novichkov
- Department of Organic Chemistry Weizmann Institute of Science Herzl, 234 7610001 Rehovot Israel
| | - Sergey N. Semenov
- Department of Organic Chemistry Weizmann Institute of Science Herzl, 234 7610001 Rehovot Israel
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9
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Corsi M, Magnolfi S, Machetti F. Transesterification of Methyl 2-Nitroacetate to Superior Esters. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Massimo Corsi
- Dipartimento di Chimica “Ugo Schiff” dell' Università degli Studi di Firenze; via Della Lastruccia 13 50019 Sesto Fiorentino Firenze Italy
| | - Stefano Magnolfi
- Istituto di Chimica dei Composti Organometallici (ICCOM) del Consiglio Nazionale delle Ricerche (CNR); c/o Dipartimento di Chimica “Ugo Schiff” dell' Università degli Studi di Firenze; via Della Lastruccia 13 50019 Sesto Fiorentino Firenze Italy
| | - Fabrizio Machetti
- Istituto di Chimica dei Composti Organometallici (ICCOM) del Consiglio Nazionale delle Ricerche (CNR); c/o Dipartimento di Chimica “Ugo Schiff” dell' Università degli Studi di Firenze; via Della Lastruccia 13 50019 Sesto Fiorentino Firenze Italy
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10
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Vadivelu M, Sampath S, Muthu K, Karthikeyan K, Praveen C. Harnessing the TEMPO-Catalyzed Aerobic Oxidation for Machetti-De Sarlo Reaction toward Sustainable Synthesis of Isoxazole Libraries. J Org Chem 2019; 84:13636-13645. [PMID: 31557022 DOI: 10.1021/acs.joc.9b01896] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A practical synthesis of isoxazole/isoxazoline derivatives via Machetti-De Sarlo reaction under sustainable conditions has been accomplished. This protocol involves the use of readily available 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO) to catalyze the cyclocondensation of primary nitroalkanes with alkynes/alkenes to afford a library of isoxazole/isoxazoline products. From an eco-benign perspective, notable advantages of this method are as follows: (i) water as the solvent, (ii) air as the oxidant, (iii) transition metal-free, (iv) no base required, (v) no toxic byproduct, (vi) no need of solvent extraction, (vii) diverse substrate scope, (viii) high chemical yields, (ix) excellent chemo- and regioselectivity, (x) short reaction time, (xi) gram-scale synthesis, (xii) extension to heterogeneous version, and (xiii) catalyst recyclability. For these reasons, the developed method is appropriate for safe laboratory use and can be expected to inspire the progress of TEMPO-based organocatalysis for the preparation of isoxazole/isoxazoline moieties in an environmentally benign fashion.
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Affiliation(s)
- Murugan Vadivelu
- Department of Chemistry , B. S. Abdur Rahman Crescent Institute of Science and Technology , Vandalur , Chennai 600048 , Tamil Nadu , India
| | - Sugirdha Sampath
- Department of Chemistry , B. S. Abdur Rahman Crescent Institute of Science and Technology , Vandalur , Chennai 600048 , Tamil Nadu , India.,Department of Metallurgical & Materials Engineering , Indian Institute of Technology-Madras (IITM) , Chennai 600036 , Tamil Nadu , India
| | - Kesavan Muthu
- Interdisplinary Institute of Indian System of Medicine (IIISM) , SRM Institute of Science and Technology , Kattankulathur 603203 , Tamil Nadu , India
| | - Kesavan Karthikeyan
- Department of Chemistry , B. S. Abdur Rahman Crescent Institute of Science and Technology , Vandalur , Chennai 600048 , Tamil Nadu , India
| | - Chandrasekar Praveen
- Materials Electrochemistry Division , Central Electrochemical Research Institute (CSIR-Laboratory) , Alagappapuram , Karaikudi 630003 , Tamil Nadu , India.,Academy of Scientific and Innovative Research (AcSIR) , CECRI campus, Alagappapuram , Karaikudi 630003 , Tamil Nadu , India
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11
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Biagiotti G, Pisaneschi F, Gammon ST, Machetti F, Ligi MC, Giambastiani G, Tuci G, Powell E, Piwnica-Worms H, Pranzini E, Paoli P, Cicchi S, Piwnica-Worms D. Multiwalled Carbon Nanotubes for Combination Therapy: a Biodistribution and Efficacy Pilot Study. J Mater Chem B 2019; 7:2678-2687. [PMID: 31073405 PMCID: PMC6501563 DOI: 10.1039/c8tb03299h] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A drug delivery system (DDS) for combined therapy, based on a short oxidized multiwalled carbon nanotube, is reported. It was prepared exploiting a synthetic approach which allowed loading of two drugs, doxorubicin and metformin, the targeting agent biotin and a radiolabeling tag, to enable labeling with Ga-68 or Cu-64 in order to perform an extensive biodistribution study by PET/CT. The DDS biodistribution profile changes with different administration methods. Once administered at therapeutic doses, the DDS showed a marginal beneficial effect on 4T1 tumor bearing mice, a syngeneic and orthotopic model of triple negative breast cancer, with survival extended by 1 week and 2 days in 20% of the mice. This is encouraging given the aggressiveness of the 4T1 tumor. Furthermore our DDS was well tolerated, ruling out concerns regarding the toxicity of carbon nanotubes.
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Affiliation(s)
- Giacomo Biagiotti
- Department of Chemistry “Ugo Schiff”, Università degli Studi di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, Firenze, Italy
- Department of Cancer Systems Imaging, Division of Diagnostic Imaging, The University of Texas MD Anderson Cancer Center, 1881 East Road, 77054 Houston, TX, USA
| | - Federica Pisaneschi
- Department of Cancer Systems Imaging, Division of Diagnostic Imaging, The University of Texas MD Anderson Cancer Center, 1881 East Road, 77054 Houston, TX, USA
| | - Seth T. Gammon
- Department of Cancer Systems Imaging, Division of Diagnostic Imaging, The University of Texas MD Anderson Cancer Center, 1881 East Road, 77054 Houston, TX, USA
| | - Fabrizio Machetti
- Department of Chemistry “Ugo Schiff”, Università degli Studi di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, Firenze, Italy
- Istituto di Chimica dei Composti Organometallici (ICCOM), Consiglio Nazionale delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
| | - Maria Cristina Ligi
- Department of Chemistry “Ugo Schiff”, Università degli Studi di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, Firenze, Italy
- Istituto di Chimica dei Composti Organometallici (ICCOM), Consiglio Nazionale delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
| | - Giuliano Giambastiani
- Istituto di Chimica dei Composti Organometallici (ICCOM), Consiglio Nazionale delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
- Kazan Federal University, 420008 Kazan, Russian Federation
| | - Giulia Tuci
- Department of Chemistry “Ugo Schiff”, Università degli Studi di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, Firenze, Italy
- Istituto di Chimica dei Composti Organometallici (ICCOM), Consiglio Nazionale delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
| | - Emily Powell
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, 1901 East Road, 77054 Houston, TX USA
| | - Helen Piwnica-Worms
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, 1901 East Road, 77054 Houston, TX USA
| | - Erica Pranzini
- Department of Biomedical, Experimental and Clinical Science “Mario Serio”, Università degli Studi di Firenze, viale Morgagni 50, 50134 Firenze, Italy
| | - Paolo Paoli
- Department of Biomedical, Experimental and Clinical Science “Mario Serio”, Università degli Studi di Firenze, viale Morgagni 50, 50134 Firenze, Italy
| | - Stefano Cicchi
- Department of Chemistry “Ugo Schiff”, Università degli Studi di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, Firenze, Italy
- Istituto di Chimica dei Composti Organometallici (ICCOM), Consiglio Nazionale delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
| | - David Piwnica-Worms
- Department of Cancer Systems Imaging, Division of Diagnostic Imaging, The University of Texas MD Anderson Cancer Center, 1881 East Road, 77054 Houston, TX, USA
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12
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Understanding the Exceptional Properties of Nitroacetamides in Water: A Computational Model Including the Solvent. Molecules 2018; 23:molecules23123308. [PMID: 30551625 PMCID: PMC6320899 DOI: 10.3390/molecules23123308] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 12/07/2018] [Accepted: 12/10/2018] [Indexed: 11/22/2022] Open
Abstract
Proton transfer in water involving C–H bonds is a challenge and nitro compounds have been studied for many years as good examples. The effect of substituents on acidity of protons geminal to the nitro group is exploited here with new pKa measurements and electronic structure models, the latter including explicit water environment. Substituents with the amide moiety display an exceptional combination of acidity and solubility in water. In order to find a rationale for the unexpected pKa changes in the (ZZ′)NCO- substituents, we measured and modeled the pKa with Z=Z′=H and Z=Z′=methyl. The dominant contribution to the observed pKa can be understood with advanced computational experiments, where the geminal proton is smoothly moved to the solvent bath. These models, mostly based on density-functional theory (DFT), include the explicit solvent (water) and statistical thermal fluctuations. As a first approximation, the change of pKa can be correlated with the average energy difference between the two tautomeric forms (aci and nitro, respectively). The contribution of the solvent molecules interacting with the solute to the proton transfer mechanism is made evident.
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Bucci R, Giofré S, Clerici F, Contini A, Pinto A, Erba E, Soave R, Pellegrino S, Gelmi ML. Tetrahydro-4H-(pyrrolo[3,4-d]isoxazol-3-yl)methanamine: A Bicyclic Diamino Scaffold Stabilizing Parallel Turn Conformations. J Org Chem 2018; 83:11493-11501. [DOI: 10.1021/acs.joc.8b01299] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Raffaella Bucci
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”, Università degli Studi Milano Via Venezian 21, Milano 20133, Italy
| | - Sabrina Giofré
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”, Università degli Studi Milano Via Venezian 21, Milano 20133, Italy
| | - Francesca Clerici
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”, Università degli Studi Milano Via Venezian 21, Milano 20133, Italy
| | - Alessandro Contini
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”, Università degli Studi Milano Via Venezian 21, Milano 20133, Italy
| | - Andrea Pinto
- DeFENS, Sezione di Scienze Chimiche e Biomolecolari, Università degli Studi Milano, Via Celoria 2, Milano 20133, Italy
| | - Emanuela Erba
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”, Università degli Studi Milano Via Venezian 21, Milano 20133, Italy
| | - Raffaella Soave
- CNR-Istituto di Scienze e Tecnologie Molecolari, Via Golgi 19, Milano 20133, Italy
| | - Sara Pellegrino
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”, Università degli Studi Milano Via Venezian 21, Milano 20133, Italy
| | - Maria Luisa Gelmi
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”, Università degli Studi Milano Via Venezian 21, Milano 20133, Italy
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14
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Chalyk BA, Sosedko AS, Volochnyuk DM, Tolmachev AA, Gavrilenko KS, Liashuk OS, Grygorenko OO. Regioselective synthesis of isoxazole and 1,2,4-oxadiazole-derived phosphonates via [3 + 2] cycloaddition. Org Biomol Chem 2018; 16:9152-9164. [DOI: 10.1039/c8ob02257g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The regioselective synthesis of 3,4- and 3,5-disubstituted izoxazole- and 1,2,4-oxadiazole-derived phosphonates is described, including analogues of phosphohistidine.
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Affiliation(s)
- Bohdan A. Chalyk
- Enamine Ltd
- Kyiv 02094
- Ukraine
- Institute of Organic Chemistry
- National Academy of Sciences of Ukraine
| | - Alona S. Sosedko
- Enamine Ltd
- Kyiv 02094
- Ukraine
- National Taras Shevchenko University of Kyiv
- Kyiv 01601
| | - Dmitriy M. Volochnyuk
- Enamine Ltd
- Kyiv 02094
- Ukraine
- Institute of Organic Chemistry
- National Academy of Sciences of Ukraine
| | - Andrey A. Tolmachev
- Enamine Ltd
- Kyiv 02094
- Ukraine
- National Taras Shevchenko University of Kyiv
- Kyiv 01601
| | | | - Oleksandr S. Liashuk
- Enamine Ltd
- Kyiv 02094
- Ukraine
- National Taras Shevchenko University of Kyiv
- Kyiv 01601
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15
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Chentsova A, Ushakov DB, Seeberger PH, Gilmore K. Synthesis of α-Nitro Carbonyls via Nitrations in Flow. J Org Chem 2016; 81:9415-9421. [DOI: 10.1021/acs.joc.6b01634] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Anna Chentsova
- Department
of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Dmitry B. Ushakov
- Department
of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Peter H. Seeberger
- Department
of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
- Institute
of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Kerry Gilmore
- Department
of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
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16
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Baglieri A, Meschisi L, De Sarlo F, Machetti F. Competitive Copper Catalysis in the Condensation of Primary Nitro Compounds with Terminal Alkynes: Synthesis of Isoxazoles. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600897] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Ausilia Baglieri
- Istituto di chimica dei composti organometallici, c/o Dipartimento di chimica Ugo Schiff; Consiglio nazionale delle ricerche (CNR); Via della Lastruccia 13 50019 Sesto Fiorentino, Firenze Italy
| | - Luca Meschisi
- Dipartimento di chimica Ugo Schiff; Università degli studi di Firenze; Via della Lastruccia 13 50019 Sesto Fiorentino Firenze Italy
| | - Francesco De Sarlo
- Dipartimento di chimica Ugo Schiff; Università degli studi di Firenze; Via della Lastruccia 13 50019 Sesto Fiorentino Firenze Italy
| | - Fabrizio Machetti
- Istituto di chimica dei composti organometallici, c/o Dipartimento di chimica Ugo Schiff; Consiglio nazionale delle ricerche (CNR); Via della Lastruccia 13 50019 Sesto Fiorentino, Firenze Italy
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17
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Xue S, Liu J, Wang C. DBU-Mediated [3+2] Cycloaddition Reactions of Donor-Acceptor Cyclopropanes with Nitromethane: Efficient Strategy for the Construction of Isoxazole Skeletons. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600227] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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18
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Perez V, Rabasso N, Fadel A. Synthesis of 5-PhosphonoisoxazolineN-Oxides by SelectiveO-Alkylation of Nitronate Anions. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501243] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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19
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Galenko AV, Khlebnikov AF, Novikov MS, Pakalnis VV, Rostovskii NV. Recent advances in isoxazole chemistry. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4503] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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20
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Mower MP, Blackmond DG. Mechanistic Rationalization of Unusual Sigmoidal Kinetic Profiles in the Machetti–De Sarlo Cycloaddition Reaction. J Am Chem Soc 2015; 137:2386-91. [DOI: 10.1021/ja512753v] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Matthew P. Mower
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Donna G. Blackmond
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
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21
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Zhang W, Wang Y, Bai C, Wen J, Wang N. One-Pot Synthesis of Aliphatic Nitro Compounds by Michael/retro-Claisen Fragmentation Domino Reaction. CHINESE J CHEM 2015. [DOI: 10.1002/cjoc.201400836] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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22
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Biagiotti G, Cicchi S, De Sarlo F, Machetti F. Reactivity of [60]Fullerene with Primary Nitro Compounds: Addition or Catalysed Condensation to Isoxazolo[60]fullerenes. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402990] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Kumar R, Nair D, Namboothiri IN. Reactions of vinyl sulfone with α-diazo-β-ketosulfone and Bestmann–Ohira reagent for the regioselective synthesis of highly functionalized pyrazoles. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.01.022] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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24
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Gangadhara Chary R, Rajeshwar Reddy G, Ganesh YSS, Vara Prasad K, Raghunadh A, Krishna T, Mukherjee S, Pal M. Effect of Aqueous Polyethylene Glycol on 1,3-Dipolar Cycloaddition of Benzoylnitromethane/Ethyl 2-Nitroacetate with Dipolarophiles: Green Synthesis of Isoxazoles and Isoxazolines. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300712] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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25
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Five-Membered Ring Systems with O & N Atoms. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/b978-0-08-100017-5.00011-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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