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A Catalyst‐ and Solvent‐ Free Synthesis of Tetra‐Substituted Pyrroles by Multicomponent Reaction. ChemistrySelect 2023. [DOI: 10.1002/slct.202204564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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2
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Nagarkar RA, Dapurkar SE. Disodium Anacardate: A Bio-based Catalyst for Room Temperature Synthesis of New, Fluorescent 1, 4-Benzoxazinone and Benzophenoxazinone Derivatives. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02082-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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3
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Hajinasiri R. Acetylenic Esters in Organic Synthesis. Synlett 2022. [DOI: 10.1055/s-0040-1719916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AbstractActivated acetylenic substrates such as acetylenic esters and alkyl propiolates are very important in organic synthesis. Due to their electron deficiency, these compounds are widely used in combinatorial and multicomponent reactions, enabling the synthesis of a large variety of novel compounds. In addition, these substrates are powerful Michael acceptors and convenient dienophiles and dipolarophiles in Diels–Alder and 1,3-dipolar cycloaddition reactions. The addition of different nucleophiles, primarily phosphorus, nitrogen or sulfur, to the triple bonds of these substrates produces key intermediates, such as Tebby and Huisgen zwitterions, which can lead to designing pathways toward the generation of spirocyclic and polycyclic compounds. This account highlights recent studies on the chemistry of acetylenic esters and their applications in organic synthesis.1 Introduction2 Synthesis of Acyclic and Monocyclic Compounds3 Synthesis of Spirocyclic Compounds4 Synthesis of Polycyclic Compounds5 Conclusion
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4
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Selvendran S, Rajendran S. Lewis acid-promoted synthesis of highly substituted pyrrole-fused benzoxazinones and quinoxalinones. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1832528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Suresh Selvendran
- Chemistry Division, School of Advanced Sciences, Vellore Institute of Technology Chennai Campus, Chennai, India
| | - Saravanakumar Rajendran
- Chemistry Division, School of Advanced Sciences, Vellore Institute of Technology Chennai Campus, Chennai, India
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5
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Sun QS, Sun J, Pan LN, Yan CG. Selective Construction of Diverse Polycyclic Spirooxindoles via a Three-Component Reaction of Cyclic Mercapto-Substituted β-Enamino Esters, Isatins, and Cyclic 1,3-Diketones. J Org Chem 2020; 85:12117-12127. [PMID: 32901479 DOI: 10.1021/acs.joc.0c01290] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The three-component reaction of alkyl 2-(benzo[b][1,4]thiazin-3-ylidene)acetates, isatins, and 1,3-indanedione (1,3-cyclopentanedione) in ethanol in the presence of acetic acid conveniently afforded spiro[indeno[1,2-b]phenothiazine-6,3'-indolines] or spiro[cyclopenta[b]phenothiazine-4,3'-indolines] in good yields and with high diastereoselectivity. More interestingly, a similar three-component reaction with 4-hydroxychromen-2-one resulted in the unexpected polycyclic spiro[benzo[b]chromeno[3',4':5,6]pyrano[2,3-e][1,4]thiazine-7,3'-indolines] in satisfactory yields. A plausible reaction mechanism was rationally proposed for formation of different kinds of the spiro compounds, and the stereochemistries of the various spiro compounds were clearly elucidated.
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Affiliation(s)
- Quan-Shun Sun
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Jing Sun
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Liu-Na Pan
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Chao-Guo Yan
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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6
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Rostami H, Shiri L. Application of
β
‐Nitrostyrene in Multicomponent Reactions for the Synthesis of Pyrrole Derivatives. ChemistrySelect 2020. [DOI: 10.1002/slct.202002563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hedieh Rostami
- Hedieh Rostami Department of Chemistry Faculty of Science Ilam University Ilam Iran
| | - Lotfi Shiri
- Department of Chemistry Faculty of Science Ilam University Ilam Iran
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7
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Katta N, Ojha M, Murugan A, Arepally S, Sharada DS. Visible light-mediated photocatalytic oxidative cleavage of activated alkynes via hydroamination: a direct approach to oxamates. RSC Adv 2020; 10:12599-12603. [PMID: 35497603 PMCID: PMC9051298 DOI: 10.1039/c9ra10555g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 02/26/2020] [Indexed: 01/31/2023] Open
Abstract
The direct oxidative cleavage of activated alkynes via hydroamination has been described using organic photocatalyst under visible-light irradiation at room temperature. In this reaction, the single electron oxidation of an in situ formed enamine followed by radical coupling with an oxidant finally delivers the oxamate. The key features of this photocatalytic reaction are the mild reaction conditions, metal-free organic dye as a photocatalyst, and TBHP playing a dual role as “O” source and for the regeneration of the photocatalyst. The direct oxidative cleavage of activated alkynes via hydroamination has been described using organic photocatalyst under visible-light irradiation at room temperature.![]()
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Affiliation(s)
- Narenderreddy Katta
- Catalysis & Chemical Biology Laboratory
- Department of Chemistry Indian Institute of Technology Hyderabad
- Sangareddy
- India
| | - Mamata Ojha
- Catalysis & Chemical Biology Laboratory
- Department of Chemistry Indian Institute of Technology Hyderabad
- Sangareddy
- India
| | - Arumugavel Murugan
- Catalysis & Chemical Biology Laboratory
- Department of Chemistry Indian Institute of Technology Hyderabad
- Sangareddy
- India
| | - Sagar Arepally
- Catalysis & Chemical Biology Laboratory
- Department of Chemistry Indian Institute of Technology Hyderabad
- Sangareddy
- India
| | - Duddu S. Sharada
- Catalysis & Chemical Biology Laboratory
- Department of Chemistry Indian Institute of Technology Hyderabad
- Sangareddy
- India
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8
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Cai XH, Zhang H, Guo H. Denitrative Coupling Reaction: A Powerful Synthetic Tool in Functional Transformation. CURR ORG CHEM 2019. [DOI: 10.2174/1385272823666190627114857] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Nitro hydrocarbons as inexpensive, easily available, and relatively stable organic intermediates have aroused great attention in various functional group transformations over the past several decades. The electron-withdrawing action of the nitro group can act as a transient leaving group to efficiently transform into the other important functionalities. Nitro compounds are easily prepared through simple synthetic reactions from simple and facile starting substrates and provide an exciting opportunity for the synthesis of various valuable products. This account will review recent progress in the denitrative coupling reaction of nitroalkanes, nitroolefins, and nitroarenes under transition metalcatalyzed, transition metal-free, or visible light induced conditions.
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Affiliation(s)
- Xiao-hua Cai
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, China
| | - Hongyan Zhang
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, China
| | - Hui Guo
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China
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9
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Kundu T, Bhattacharjee B, Hazra S, Ghosh AK, Bandyopadhyay D, Pramanik A. Synthesis and Biological Assessment of Pyrrolobenzoxazine Scaffold as a Potent Antioxidant. J Med Chem 2019; 62:6315-6329. [PMID: 31246452 DOI: 10.1021/acs.jmedchem.9b00717] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Reduction of mitochondrial oxidative stress-mediated diseases is an important pharmaceutical objective in recent biomedical research. In this context, a series of novel pyrrolobenzoxazines (PyBs) framework with enormous diversity (compounds 5a-w) was synthesized by employing a low-temperature greener pathway, and antioxidant property of the synthesized compounds was successfully demonstrated on preclinical model goat heart mitochondria, in vitro. Copper-ascorbate (Cu-As) was utilized as an oxidative stress generator. Out of screened PyBs, the compound possessing -OH and -OMe groups on benzene nucleus along with pyrrolobenzoxazine core moiety (compound 5w) displayed magnificent antioxidant property with a minimum effective dose of 66 μM during the biochemical assessment. The ameliorative effect of synthesized pyrrolobenzoxazine moiety on levels of biomarkers of oxidative stress, antioxidant enzyme, activities of Krebs cycle and respiratory chain enzymes, mitochondrial morphology, and Ca2+ permeability of mitochondrial membrane was investigated in the presence of Cu-As. Furthermore, the binding mode of Cu-As by compound 5w was explored successfully using isothermal titration calorimetry (ITC) analysis.
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Affiliation(s)
- Tania Kundu
- Department of Chemistry , University of Calcutta , 92, A. P. C. Road , Kolkata - 700 009 , India
| | - Bharati Bhattacharjee
- Department of Physiology, Oxidative Stress, and Free Radical Biology Laboratory , University of Calcutta , 92, A. P. C. Road , Kolkata - 700 009 , India
| | - Subhenjit Hazra
- Department of Chemistry , University of Calcutta , 92, A. P. C. Road , Kolkata - 700 009 , India
| | - Arnab K Ghosh
- Department of Physiology, Oxidative Stress, and Free Radical Biology Laboratory , University of Calcutta , 92, A. P. C. Road , Kolkata - 700 009 , India
| | - Debasish Bandyopadhyay
- Department of Physiology, Oxidative Stress, and Free Radical Biology Laboratory , University of Calcutta , 92, A. P. C. Road , Kolkata - 700 009 , India
| | - Animesh Pramanik
- Department of Chemistry , University of Calcutta , 92, A. P. C. Road , Kolkata - 700 009 , India
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Das A, Roy H, Ansary I. Microwave-Assisted, One-Pot Three-Component Synthesis of 6-(Pyrrolyl) Coumarin/Quinolone Derivatives Catalyzed by In(III) Chloride. ChemistrySelect 2018. [DOI: 10.1002/slct.201801931] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Arijit Das
- Department of Chemistry; The University of Burdwan; Golapbag Campus, Rajbati; Burdwan-713 104, West Bengal India
| | - Hiren Roy
- Department of Chemistry; The University of Burdwan; Golapbag Campus, Rajbati; Burdwan-713 104, West Bengal India
| | - Inul Ansary
- Department of Chemistry; The University of Burdwan; Golapbag Campus, Rajbati; Burdwan-713 104, West Bengal India
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11
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Xiao M, Jiang YH, Yan CG. Three-component reaction of o-aminophenol (o-phenylenediamine), dialkyl acetylenedicarboxylate and 3-phenacylideneoxindolines. Mol Divers 2018; 23:123-135. [DOI: 10.1007/s11030-018-9853-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 06/19/2018] [Indexed: 01/06/2023]
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12
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Saha M, Das AR. I2/TBHP promoted oxidative C–N bond formation at room temperature: Divergent access of 2-substituted benzimidazoles involving ring distortion. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.05.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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13
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Nadaf AN, Shivashankar K. Visible Light-Induced Synthesis of Biscoumarin Analogs under Catalyst-Free Conditions. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3171] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Ankusab Noorahmadsab Nadaf
- P. G. Department of Chemistry, Central College Campus; Bangalore University; Bangalore 560 001 Karnataka India
| | - Kalegowda Shivashankar
- P. G. Department of Chemistry, Central College Campus; Bangalore University; Bangalore 560 001 Karnataka India
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14
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Sun QS, Sun J, Jiang W, Yan CG. Annulation reaction of methyl 2-(benzo[ b ][1,4]thiazin-3-ylidene)acetate with β -nitrostyrenes and 3-nitrochromenes. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.01.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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15
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Vidyacharan S, Murugan A, Sharada DS. C(sp(2))-H Functionalization of 2H-Indazoles at C3-Position via Palladium(II)-Catalyzed Isocyanide Insertion Strategy Leading to Diverse Heterocycles. J Org Chem 2016; 81:2837-48. [PMID: 26954483 DOI: 10.1021/acs.joc.6b00048] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Herein, we have reported an efficient Pd-catalyzed C-H functionalization of 2H-indazole at C3-position via an isocyanide insertion strategy for the synthesis of unprecedented benzoxazinoindazoles, indazoloquinaoxalines and benzoxazinoindazolones for the first time. Our new method provides an operationally simple and versatile route for a selective synthesis of 2-(2H-indazol-2-yl)phenols. Furthermore, we developed a sequential one-pot strategy for the synthesis of benzoxazinoindazolone under metal-oxidant-free conditions. We also achieved the isocyanide insertion between C(sp(2))-H and oxygen heteroatom for the first time. The key features of the present protocol are construction of 4 bonds in one-pot, synthesis of new skeletally diverse scaffolds, broad substrate scope, high yields and environmentally benign conditions.
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Affiliation(s)
- Shinde Vidyacharan
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi, Sangareddy, Medak District 502285, Telangana, India
| | - Arumugavel Murugan
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi, Sangareddy, Medak District 502285, Telangana, India
| | - Duddu S Sharada
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi, Sangareddy, Medak District 502285, Telangana, India
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16
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Sagar A, Vidaycharan S, Shinde AH, Sharada DS. Hypervalent iodine(iii)-promoted N-incorporation into N-aryl vinylogous carbamates to quinoxaline diesters: access to 1,4,5,8-tetraazaphenanthrene. Org Biomol Chem 2016; 14:4018-22. [DOI: 10.1039/c6ob00447d] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An oxidative N-incorporation strategy for synthesis of quinoxaline diesters under metal-free and mild reaction conditions is described via the formation of two C(sp2)–N bonds utilizing NaN3 as the cheap N-atom source.
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Affiliation(s)
- A. Sagar
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy
- India
| | - Shinde Vidaycharan
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy
- India
| | - Anand H. Shinde
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy
- India
| | - Duddu S. Sharada
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy
- India
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17
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Shinde AH, Vidyacharan S, Sharada DS. BF3·OEt2 mediated metal-free one-pot sequential multiple annulation cascade (SMAC) synthesis of complex and diverse tetrahydroisoquinoline fused hybrid molecules. Org Biomol Chem 2016; 14:3207-11. [DOI: 10.1039/c6ob00253f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A highly efficient and distinct BF3·OEt2 mediated one-pot metal-free sequential multiple annulation cascade (SMAC) protocol for the synthesis of complex and diverse THIQ fused hybrid molecules has been presented.
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Affiliation(s)
- Anand H. Shinde
- Department of Chemistry
- Indian Institute of Technology (IIT) Hyderabad
- Telangana
- India
| | - Shinde Vidyacharan
- Department of Chemistry
- Indian Institute of Technology (IIT) Hyderabad
- Telangana
- India
| | - Duddu S. Sharada
- Department of Chemistry
- Indian Institute of Technology (IIT) Hyderabad
- Telangana
- India
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18
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Vidyacharan S, Sagar A, Sharada DS. A new route for the synthesis of highly substituted 4-aminoquinoline drug like molecules via aza hetero–Diels–Alder reaction. Org Biomol Chem 2015; 13:7614-8. [DOI: 10.1039/c5ob01023c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A new route has been developed for the synthesis of 4-aminoquinoline drug like moleculesviaaza hetero–Diels–Alder reaction starting from 2H-indazole as a diene for the first time.
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Affiliation(s)
- Shinde Vidyacharan
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Telangana
- Hyderabad
- India
| | - A. Sagar
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Telangana
- Hyderabad
- India
| | - Duddu S. Sharada
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Telangana
- Hyderabad
- India
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19
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Sharma S, Naganaboina RT, Peddinti RK. Expedient synthesis of nitrovinyl substituted bicyclo[2.2.2]octenone scaffolds. RSC Adv 2015. [DOI: 10.1039/c5ra20016d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A simple and rapid oxidative acetalization and Diels–Alder protocol of nitrovinyl substituted guaiacols has been developed to synthesize nitrovinyl-bearing bicyclo[2.2.2]octenone derivatives.
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Affiliation(s)
- Shivangi Sharma
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247 667
- India
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