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Insights into the mechanism and stereoselectivity of the [3+2] cycloaddition reaction between N-methyl-C-(4-hydroxylphenyl) nitrone and maleic anhydride with a molecular electron density theory perspective. Theor Chem Acc 2022. [DOI: 10.1007/s00214-022-02891-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Domingo LR, Ríos‐Gutiérrez M, Acharjee N. Unveiling the
cb‐type
Intramolecular [3+2] Cycloaddition Reactions of Fluorinated Azomethine Ylides to Ester Carbonyls with a Molecular Electron Density Theory Perspective. ChemistrySelect 2022. [DOI: 10.1002/slct.202201845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Luis R. Domingo
- Department of Organic Chemistry University of Valencia, Dr. Moliner 50 Burjassot, E 46100 Valencia Spain
| | - M. Ríos‐Gutiérrez
- Department of Organic Chemistry University of Valencia, Dr. Moliner 50 Burjassot, E 46100 Valencia Spain
| | - Nivedita Acharjee
- Department of Chemistry Durgapur Government College J. N. Avenue Durgapur West Bengal 713214 India
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Unveiling the synthesis of spirocyclic, tricyclic, and bicyclic triazolooxazines from intramolecular [3 + 2] azide-alkyne cycloadditions with a molecular electron density theory perspective. Struct Chem 2022. [DOI: 10.1007/s11224-021-01870-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Domingo LR, Acharjee N. Unveiling the Substituent Effects in the Stereochemistry of [3+2] Cycloaddition Reactions of Aryl‐ and Alkyldiazomethylphosphonates with Norbornadiene within a MEDT Perspective. ChemistrySelect 2021. [DOI: 10.1002/slct.202102942] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Luis R Domingo
- Department of Organic Chemistry University of Valencia Dr. Moliner 50 Burjassot E-46100 Valencia Spain
| | - Nivedita Acharjee
- Department of Chemistry Durgapur Government College J. N. Avenue Durgapur West Bengal 713214 India
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Acharjee N, Mohammad-Salim HA, Chakraborty M. Unveiling [3 + 2] cycloaddition reactions of benzonitrile oxide and diphenyl diazomethane to cyclopentene and norbornene: a molecular electron density theory perspective. Theor Chem Acc 2021. [DOI: 10.1007/s00214-021-02811-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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A molecular electron density theory study of the [3 + 2] cycloaddition reaction of nitronic ester with methyl acrylate. Theor Chem Acc 2021. [DOI: 10.1007/s00214-021-02789-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Domingo LR, Acharjee N. Unveiling the Chemo‐ and Regioselectivity of the [3+2] Cycloaddition Reaction between 4‐Chlorobenzonitrile Oxide and β‐Aminocinnamonitrile with a MEDT Perspective**. ChemistrySelect 2021. [DOI: 10.1002/slct.202100978] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Luis R Domingo
- Department of Organic Chemistry University of Valencia Dr.Moliner 50 Burjassot E-46100 Valencia Spain E-mail: Contact
| | - Nivedita Acharjee
- Department of Chemistry Durgapur Government College J. N. Avenue Durgapur West Bengal 713214 India E-mail: Contact
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Acharjee N, Mohammad‐Salim HA, Chakraborty M, Rao MP, Ganesh M. Unveiling the high regioselectivity and stereoselectivity within the synthesis of spirooxindolenitropyrrolidine: A molecular electron density theory perspective. J PHYS ORG CHEM 2021. [DOI: 10.1002/poc.4189] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | | | - Mrinmoy Chakraborty
- Department of Electronics and Communication Engineering Dr. B. C. Roy Engineering College Durgapur India
| | - Madhuri P. Rao
- Department of Chemistry B.M.S College of Engineering Bengaluru India
| | - Madhu Ganesh
- Department of Chemistry B.M.S College of Engineering Bengaluru India
- Department of Pharmaceutical Technology National Institute of Pharmaceutical Education and Research Hyderabad India
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Unveiling the Unexpected Reactivity of Electrophilic Diazoalkanes in [3+2] Cycloaddition Reactions within Molecular Electron Density Theory. CHEMISTRY 2021. [DOI: 10.3390/chemistry3010006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The [3+2] cycloaddition (32CA) reactions of strongly nucleophilic norbornadiene (NBD), with simplest diazoalkane (DAA) and three DAAs of increased electrophilicity, have been studied within the Molecular Electron Density Theory (MEDT) at the MPWB1K/6-311G (d,p) computational level. These pmr-type 32CA reactions follow an asynchronous one-step mechanism with activation enthalpies ranging from 17.7 to 27.9 kcal·mol−1 in acetonitrile. The high exergonic character of these reactions makes them irreversible. The presence of electron-withdrawing (EW) substituents in the DAA increases the activation enthalpies, in complete agreement with the experimental slowing-down of the reactions, but contrary to the Conceptual DFT prediction. Despite the nucleophilic and electrophilic character of the reagents, the global electron density transfer at the TSs indicates rather non-polar 32CA reactions. The present MEDT study establishes the depopulation of the N–N–C core in this series of DAAs with the increase of the EW character of the substituents present at the carbon center is responsible for the experimentally found deceleration.
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Insights into the mechanism and regioselectivity of the [3 + 2] cycloaddition reactions of cyclic nitrone to nitrile functions with a molecular electron density theory perspective. Theor Chem Acc 2021. [DOI: 10.1007/s00214-020-02703-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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