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Showing 41-60 of 10,000 results
  1. Ultrasound-assisted Cu(II) Strecker-functionalized organocatalyst for green azide–alkyne cycloaddition and Ullmann reactions

    A new aminonitrile-functionalized Fe 3 O 4 has been synthesized via the Strecker reaction, the designed aminonitrile ligand on the surface of the...

    Mahyar Aghajani, Minoo Dabiri in Scientific Reports
    Article Open access 27 May 2024
  2. CO2 cycloaddition reaction at ambient temperature and pressure over metal organic framework catalysts

    Valorisation of CO 2 via cycloaddition reactions to value added cyclic carbonates is a desirable, however, challenging technique owing to the chemical...

    Soumitra Payra, Sounak Roy in MRS Communications
    Article 30 August 2023
  3. Valence-isomer selective cycloaddition reaction of cycloheptatrienes-norcaradienes

    The rapid and precise creation of complex molecules while controlling multiple selectivities is the principal objective in synthetic chemistry....

    Shingo Harada, Hiroki Takenaka, ... Tetsuhiro Nemoto in Nature Communications
    Article Open access 14 March 2024
  4. Effect of hydrogen bonds and CF3 group on the regioselectivity and mechanism of [3 + 2] cycloaddition reactions between nitrile oxide and 2,4-disubstituted cyclopentenes. A MEDT study

    The mechanism and the regioselectivity of the non-polar [3 + 2] cycloaddition reactions between nitrile oxide and two cyclopentenes were...

    Hanifa Chouit, Chafia Sobhi, ... Abdelmalek Khorief Nacereddine in Journal of Molecular Modeling
    Article 26 March 2022
  5. The [3+2] cycloaddition reaction as an attractive way for the preparation of nicotine analogs (microreview)

    In this microreview, the application of [3+2] cycloaddition reactions in the synthesis of nicotine analogs is critically reviewed and analyzed on...

    Agnieszka Łapczuk in Chemistry of Heterocyclic Compounds
    Article 01 March 2023
  6. Crystal facet-dependent CO2 cycloaddition to epoxides over ZnO catalysts

    With regard to green chemistry and sustainable development, the fixation of CO 2 into epoxides to form cyclic carbonates is an attractive and...

    Yongjian Wei, Ying Li, ... Jie Bai in Frontiers of Chemical Science and Engineering
    Article 10 April 2024
  7. Synthesis of Aromatic Polyamidines by the [2+2]-Cycloaddition Reaction

    Abstract

    Aromatic polyamidines based on 4,4′-diphenylmethane diisocyanate and bisamides have been synthesized and studied. The one-step reaction of...

    D. M. Mognonov, V. V. Khakhinov, ... S. V. Morozov in Polymer Science, Series B
    Article 18 August 2023
  8. ADME Study, Molecular Docking, Elucidating the Selectivities and the Mechanism of [4 + 2] Cycloaddition Reaction Between (E)-N ((dimethylamino)methylene)benzothioamide and (S)-3-acryloyl-4-phenyloxazolidin-2-one

    The molecular electron density theory (MEDT) was employed to examine the [4 + 2] cycloaddition reaction between (E)- N -((dimethylamino)methylene)benzot...

    Mhamed Atif, Ali Barhoumi, ... Mohammed El Idrissi in Molecular Biotechnology
    Article 08 March 2024
  9. Organocatalytic Diastereoselective Synthesis of Spiro[3-azabicyclo[3.1.0]hexanes] via 1,3-Dipolar Cycloaddition of Azomethine Ylides with Cyclopropenes

    Abstract

    A three-component organocatalytic reaction of 1,3-dipolar cycloaddition between the in situ generated azomethine ylides and 3-substituted...

    Yu. A. Pronina, N. B. Viktorov, ... A. V. Stepakov in Russian Journal of General Chemistry
    Article 01 April 2024
  10. Synthesis of Spiro-Oxindole-Pyrrolidines via [3 + 2]-Cycloaddition of Non-stabilized Azomethine Ylide

    Abstract

    A representative series of 12 spiro-pyrrolidine-fused oxindoles have been synthesized via [3+2]-cy­clo­addition of nonstabilized azomethine...

    B. Suryanarayana, Ch. Venkata Ramana Reddy in Russian Journal of Organic Chemistry
    Article 01 January 2023
  11. Unveiling the mechanism, selectivity, solvent and temperature effects on the [3 + 2] cycloaddition reaction of N-methyl-C-(2-furyl) nitrone with maleimide derivatives from the molecular electron density theory perspective

    The [3 + 2] cycloaddition (32CA) reactions of N -methyl-C-(2-furyl) nitrone with maleimide derivatives have been studied in gas phase, ethanol and...

    Moulay Driss Mellaoui, Nivedita Acharjee, ... Khalid Abbiche in Theoretical Chemistry Accounts
    Article 30 March 2023
  12. MCM-41 supported quaternary ammonium ionic liquids as an effective heterogeneous catalyst for CO2 cycloaddition reaction

    Ionic liquid immobilization is an effective means for preparing metal-free heterogeneous catalysts for the CO 2 conversion. Herein, a series of...

    Qing Lu, Shougui Wang, ... Fei Gao in Journal of Porous Materials
    Article 18 February 2024
  13. Theoretical investigation of the regio-, enantio-, and stereo-selectivities of the (3 + 2) cycloaddition reactions of N-vinylindoles with nitrones and nitrile oxides

    The 1,3-dipolar cycloadditions of nitrones and nitrile oxides to N -vinylindole afford isoxazolidines and 5-indolyl-substituted isoxazolines which are...

    Wisdom Kwaku Samba, Anthony Amoah, ... Evans Adei in Theoretical Chemistry Accounts
    Article 08 October 2021
  14. Synthesis of metal-free benzimidazole-based catalysts and its application in CO2 cycloaddition

    Ionic polymers functionalized with hydroxyl, carboxyl, and amino groups can enhance the catalytic activity of catalysts. However, the straightforward...

    Li Lin, Huigui Yang, ... Juan Xu in Environmental Science and Pollution Research
    Article 03 July 2024
  15. Diastereoselective green synthesis of pyrrolo[1,2-a]quinolines via [3+2] cycloaddition reaction: insights from molecular electron density theory

    The [3+2] cycloaddition (32CA) reaction between cyclic azomethine ylide (generated from N -phenacylquinolinium bromide) and N -arylmaleimide, leading...

    Haydar Mohammad-Salim, Asmita Mondal, ... Nivedita Acharjee in Theoretical Chemistry Accounts
    Article 15 November 2023
  16. A molecular electron density theory study of mechanism and selectivity of the intramolecular [3+2] cycloaddition reaction of a nitrone–vinylphosphonate adduct

    The selectivity and the molecular mechanism of the intramolecular [3+2] cycloaddition reaction of a nitrone–vinylphosphonate adduct was...

    Fouad Chafaa, Abdelmalek Khorief Nacereddine in Chemistry of Heterocyclic Compounds
    Article 01 March 2023
  17. Polyoxometalates coupled covalent organic frameworks as highly active photothermal nanoreactor for CO2 cycloaddition

    Covalent organic frameworks (COFs)-based nanoreactors have attracted broad interest in many fields due to their void-confinement effects. However,...

    Tian Wang, Yunqing Zhu, ... Peilei He in Nano Research
    Article 30 April 2024
  18. Exploring the factors controlling the mechanism and the high stereoselectivity of the polar [3+2] cycloaddition reaction of the N,N'-cyclic azomethine imine with 3-nitro-2-phenyl-2H-chromene. A molecular electron density theory study

    A molecular electron density theory study of the [3+2] cycloaddition reaction of 5-oxo-2-(phenylmethylidene)pyrazolidin-2-ium-1-ide, a simple...

    Sabir Messaadia, Abdelmalek Khorief Nacereddine, Abdelhafid Djerourou in Chemistry of Heterocyclic Compounds
    Article 01 March 2023
  19. Domino Heck-Pericyclic Reactions

    Palladium-catalyzed cross-coupling reactions and cycloadditions as well as electrocyclic transformations can efficiently be combined in one-pot...
    Paultheo von Zezschwitz, Armin de Meijere in Metal Catalyzed Cascade Reactions
    Chapter
  20. Unveiling [3 + 2] cycloaddition reactions of benzonitrile oxide and diphenyl diazomethane to cyclopentene and norbornene: a molecular electron density theory perspective

    A molecular electron density theory (MEDT) study is performed for the [3 + 2] cycloaddition (32CA) reactions of benzonitrile oxide (BNO) and...

    Nivedita Acharjee, Haydar A. Mohammad-Salim, Mrinmoy Chakraborty in Theoretical Chemistry Accounts
    Article 26 July 2021
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