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Showing 1-20 of 2,929 results
  1. Pyridyl-Substituted Ureas and Carbamates: Synthesis and Application (A Review)

    Abstract

    The review is devoted to the methods of synthesis of pyridine-substituted ureas and carbamates. The classical synthetic approaches to such...

    S. O. Baykova, S. V. Baykov, V. P. Boyarskiy in Russian Journal of General Chemistry
    Article 01 January 2024
  2. Rh-catalyzed cyclization of carbamates–synthesis of a new heterocyclic system: tetrahydro-3H-4-oxa-2-thia-2b-azacyclopropa[cd]pentalen-3-one 2,2-dioxide

    A simple method for the synthesis of five- and six-membered ring sulfone carbamates was elaborated. The method includes reaction of the corresponding...

    Kateryna V. Dil, Yevhenii K. Kozyriev, Vitalii A. Palchykov in Chemical Papers
    Article 10 August 2023
  3. Application of CO2 as a C1-Synthon in Organic Chemistry: II. Catalytic Synthesis of Cyclic Carbonates (Carbamates) from CO2 and Epoxides (Aziridines)

    Abstract

    Carbon dioxide is a cheap, easily available, and practically inexhaustible source of synthetic carbon (C 1 -synthon). Among various...

    N. Yu. Kuznetsov, I. P. Beletskaya in Russian Journal of Organic Chemistry
    Article 01 August 2023
  4. One-pot catalytic synthesis of urea derivatives from alkyl ammonium carbamates using low concentrations of CO2

    To reduce anthropogenic carbon dioxide (CO 2 ) emissions, it is desirable to develop reactions that can efficiently convert low concentrations of CO 2 ,...

    Hiroki Koizumi, Katsuhiko Takeuchi, ... Jun-Chul Choi in Communications Chemistry
    Article Open access 14 May 2021
  5. Synthesis of N-[2-(3,5-Diallyl-2,4,6-trioxo-1,3,5-triazinan-1-yl)­ethyl]ureas and -Carbamates

    Abstract

    1-(2-Aminoethyl)-3,5-diallyl-1,3,5-triazinane-2,4,6-trione reacted with phenyl isocyanate and hexa­methylene diisocyanate to give previously...

    O. A. Kolyamshin, Yu. N. Mitrasov, ... K. Yu. Ivanova in Russian Journal of Organic Chemistry
    Article 01 April 2023
  6. Amination, Acetamidation, and Amidation of Substituted Aromatic Carbamates in Polyphosphoric Acid

    Abstract

    Electrophilic amination of methyl N -(hydroxyphenyl)carbamates and methyl N -(4-methoxyphenyl)carbamate with sodium azide in 86%...

    A. V. Velikorodov, E. N. Kutlalieva, ... O. Yu. Poddubny in Russian Journal of Organic Chemistry
    Article 01 September 2020
  7. Design, Synthesis, Characterization of New Carbamates of 4-Nitrophenylchloroformate and Their Antimicrobial and Antioxidant Activities: an In Vitro and In Silico Approach

    A series of new carbamates of 4-nitrophenylchloroformate were synthesized in a simple nucleophilic substitution reaction with experimental simplicity...

    P. Hari Babu, Ch. Venkataramaiah, ... P. V. Chalapathi in Chemistry Africa
    Article 05 January 2021
  8. Magnetic porous carbon derived from Zn/Co metal–organic framework as an adsorbent for extraction and determination of carbamates

    A novel magnetic porous carbon with a high specific surface and magnetization saturation, derived from a Zn/Co-MOF-5, was fabricated by direct...

    Meng Wang, **g**g Wang, ... Jide Wang in Microchimica Acta
    Article 22 August 2020
  9. Development of a Pt-graphene nanocomposite-based solid-phase extraction coupled with ultra-performance liquid chromatography–tandem mass spectrometry for the determination of carbamate pesticides in fish

    Abstract

    In the present work, a potential solid-phase extraction (SPE) material based on graphene anchored with platinum nanoparticles (Pt-Graphene)...

    Yating **, Di Hu, ... Juanjuan Chen in Analytical Sciences
    Article 31 March 2023
  10. Palladium-catalyzed regioselective cascade reaction of carbon dioxide, amines and allenes for the synthesis of functionalized carbamates

    A palladium-catalyzed regioselective three-component cascade reaction of carbon dioxide, amines and allenes has been developed, providing an...

    Wenfang **ong, Ruixiang Cheng, ... Huanfeng Jiang in Science China Chemistry
    Article 17 February 2020
  11. Synthesis and Some Transformations of New Acetophenone Derivatives Containing a Carbamate Moiety

    Abstract

    The acylation of methyl phenylcarbamate, 2-(morpholin-4-yl)ethyl phenylcarbamate, and 2-(pyri­din-2-yl)ethyl phenylcarbamate with acetic...

    A. V. Velikorodov, E. N. Kutlalieva, ... E. A. Shustova in Russian Journal of Organic Chemistry
    Article 01 January 2023
  12. Rapid detection of carbamate nerve agent analogues using dually functionalized gold nanoclusters

    Carbamate nerve agents (CMNAs) are a type of lethal cholinesterase inhibitor with one or more quaternary amine centres and aromatic rings. CMNAs have...

    Qiaoli Zhang, Jiale Lv, ... Shilei Liu in Analytical and Bioanalytical Chemistry
    Article 02 June 2023
  13. Counterintuitive chemoselectivity in the reduction of carbonyl compounds

    The reactivity of carbonyl functional groups largely depends on the substituents on the carbon atom. Reversal of the commonly accepted order of...

    Takanori Iwasaki, Kyoko Nozaki in Nature Reviews Chemistry
    Article 03 June 2024
  14. Insights into the HO· and HOO· radical scavenging activity of aryl carbamate derivative: a computational mechanistic and kinetic investigation

    Aryl carbamates exhibit significant utility due to their diverse range of biological activities, including anticancer, antituberculosis, and...

    Chhinderpal Kaur, Debasish Mandal in Theoretical Chemistry Accounts
    Article 19 March 2024
  15. Carbalkoxilation of polyethylene polyamines with dialkyl carbonates

    The reaction of carbalkoxylation of polyethylene polyamines (PEPA) with various dialkyl carbonates, including fluorine-containing ones, was studied...

    A. M. Semenova, N. A. Malenkih, ... A. V. Pestov in Russian Chemical Bulletin
    Article 01 January 2022
  16. Assessing organophosphorus and carbamate pesticides in maize samples using MIP extraction and PSI-MS analyzes

    The indiscriminate utilization of agrochemicals causes environmental and animal life impacts. In this regard, methodologies have been developed to...

    Carla Freitas, Lucas S. Machado, ... Boniek G. Vaz in Journal of Food Science and Technology
    Article 04 May 2022
  17. Ecotoxicological and Human Health Risks of Pesticides in the Waters of Azagny Area (Grand Lahou, Cote d’Ivoire)

    The scope of this study is to know the level of contamination of pesticide residues and the related ecotoxicological risks in the waters of the...

    Ehounoud Hermann Narcisse N’dohou, Gnonsoro Urbain Paul, ... Yao Koffi Marcellin in Chemistry Africa
    Article 20 March 2023
  18. Non-innocent electrophiles unlock exogenous base-free coupling reactions

    Numerous important transition metal-catalysed reactions rely on stoichiometric quantities of an exogenous base to enable catalytic turnover. Despite...

    Georgios Toupalas, Bill Morandi in Nature Catalysis
    Article 26 April 2022
  19. Display of a novel carboxylesterase CarCby on Escherichia coli cell surface for carbaryl pesticide bioremediation

    Background

    Carbamate pesticides have been widely used in agricultural and forestry pest control. The large-scale use of carbamates has caused severe...

    Yan Liu, **aoliang Wang, ... Junmei Ding in Microbial Cell Factories
    Article Open access 28 May 2022
  20. Alternative Synthetic Routes to Dioxolanes and Thiadiazines

    Abstract

    The hydrolysis of 2-methylbut-3-yn-2-yl carbamate gave 4,4-dimethyl-5-methylidene-1,3-dioxo­lan-2-one, whereas...

    M. D. Isobaev, E. Kh. Pulatov, ... M. I. Jumaeva in Russian Journal of Organic Chemistry
    Article 01 March 2021
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