Жарияланымдар / Публикации

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    Тип записи:Публикация,
    Synthesis of Amidophosphates Based on 1-Ethynyl-1-Aminocyclohexane Upon Microwave Activation and their Biological Activity
    (2023-03-20)
    Б. Ж. Джиембаев
    ;
    A. B. Kuandykova
    ;
    Nurgali Akylbekov
    ;
    Alexey B. Dobrynin
    ;
    Alexander Romanovich Burilov
    The researches for developing the methods for synthesizing new functionally substituted derivatives of alicyclic dialkylamidophosphates, establishing their structure, and searching for promising biologically active compounds in their series, are modern and relevant. The given study aimed to develop the synthesis of amidophosphates based on the example of phosphorylation of 1-ethynyl-1-aminocyclohexane with dialkyl phosphites in the presence of triethylamine in carbon tetrachloride in the Atherton-Todd reaction conditions using microwave irradiation of the reaction mixture. The reaction of 1-ethynyl-1-aminocyclohexane with dialkyl phosphites was carried out in a CCl4 excess at an equimolar ratio of reagents, triethylamine was used as an HCl acceptor. The highest yields of dialkyl- N-(1-ethynylcyclohexan-1-yl)amidophosphates were achieved by adding equimolar amounts of dialkyl phosphites to the mixture of 1-ethynyl-1-aminocyclohexane, triethylamine, and CCl4 followed by the subsequent activation of the mixture in a microwave reactor (MAS-II Plus MW) (MW 102 W, 115 °C, microwave irradiation time was 3‒5 min). The composition and structure of the obtained compounds were proved by elemental analysis, IR, 1H, 13C, 31P NMR spectroscopy, and X-ray diffraction analysis (XRD). The biological tests carried out in laboratory and field conditions allowed identifying diethyl-N-(1-ethynylcyclohexan-1-yl) amidophosphate among the synthesized compounds, which produces a high growth-regulating effect on the growth, development, and yield of agricultural crops.
    Цитирования (OpenAlex) 2Цитирования (OpenCitations) 1
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    Synthesis of New Symmetrical Diamidophosphates Based on meta-Phenylenediamine under Microwave Irradiation
    (Pleiades Publishing, 2023-06-01)
    A. B. Kuandykova
    ;
    Б. Ж. Джиембаев
    ;
    Alexander Romanovich Burilov
    ;
    Nurgali Akylbekov
    ;
    Elena Chugunova
    Abstract A new series of diphosphorylated amidophosphates was obtained as a result of the reaction of meta-phenylenediamine with dialkyl phosphites in the presence of CCl4 and triethylamine (Atherton–Todd reaction) under microwave irradiation. Structure of all the obtained amidophosphates was established on the basis of 31P, 1H, 13C NMR, IR spectroscopy and mass spectrometry methods, as well as single crystal X-ray diffraction and elemental analysis data.
    Цитирования (OpenAlex) 5Цитирования (OpenCitations) 2
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    Synthesis of new symmetrical diamidophosphates based on meta-phenylenediamine under microwave irradiation
    (Pleiades Publishing, 2023-06-15)
    A. B. Kuandykova
    ;
    Б. Ж. Джиембаев
    ;
    Alexander Romanovich Burilov
    ;
    Nurgali Akylbekov
    ;
    Elena Chugunova
    A new series of diphosphorylated amidophosphates was obtained as a result of the reaction of meta -phenylenediamine with dialkylphosphites in the presence of CCl4 and triethylamine (Atherton-Todd reaction) under microwave irradiation. Structure of all the obtained amidophosphates was established on the basis of 31P, 1H, 13C NMR, IR spectroscopy and mass spectrometry methods, as well as single crystal X-ray diffraction and elemental analysis data.
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    Тип записи:Публикация,
    Structure Property–Application Relationships of Spinel Ferrite Nanoparticles: From Synthesis to Functional Systems
    (Multidisciplinary Digital Publishing Institute, 2026-02-24)
    Mukhametkali Musagalievich Mataev
    ;
    Altynai Madiyarova
    ;
    Moldir Rashidovna Abdraimova
    ;
    Zhanar Yliasovna Tursinova
    ;
    Krishnamoorthy Ramachandran
    ). The physicochemical principles, advantages, and limitations of various synthesis techniques-including co-precipitation, combustion, sol-gel, thermal decomposition, hydrothermal, solvothermal, microwave-assisted, sonochemical, electrochemical, and solid-state reaction methods-are comparatively discussed. The influence of synthesis parameters on crystal structure, morphology, and cation distribution between tetrahedral and octahedral sites, as well as on magnetic, dielectric, and optical properties, is critically analyzed. Furthermore, the capabilities of characterization techniques such as X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive spectroscopy (SEM/EDS), Fourier-transform infrared spectroscopy (FTIR), FT-Raman spectroscopy, dielectric measurements, and magnetic measurements for investigating spinel ferrites are comprehensively summarized. Finally, the high potential of spinel ferrite nanoparticles for applications in electronics, microwave devices, water treatment, catalysis, sensors, and biomedical fields is highlighted.
    Цитирования (OpenAlex) 28
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    Perovskite Manganites: An Overview of Synthesis, Classification, Characterization, and Applications
    (Multidisciplinary Digital Publishing Institute, 2026-06-24)
    Marzhan Nurbekova
    ;
    Mukhametkali Musagalievich Mataev
    ;
    Moldir Rashidovna Abdraimova
    ;
    Zhanar Yliasovna Tursinova
    ;
    Zhadyra Durmenbayeva
    Perovskite manganites (AMnO3) and perovskite-like manganites (A′1−xAxMnO3) are complex oxide materials that have attracted significant attention from the scientific community in recent years due to their structural flexibility, mixed-valence state, tunable electronic configuration, and multifunctional properties. This review systematically analyzes the synthesis methods, structural classification, and physicochemical characterization of perovskite manganites, as well as their magnetic, optical, electrical, dielectric, and catalytic properties. The influence of solid-state reactions, sol–gel, Pechini, hydrothermal, co-precipitation, microwave, and other mild chemical approaches on phase purity, morphology, particle size, and oxygen stoichiometry was examined. The structural diversity of perovskite and perovskite-like manganites, including simple ABO3, double perovskites, multilayer, and low-dimensional systems, was characterized in relation to their functional properties. The review discussed the capabilities of methods for synthesizing and analyzing morphological properties, demonstrating the role of doping, cation substitution, oxygen vacancies, and Jahn–Teller distortions in controlling material properties. Prospects for the application of perovskite manganites in spintronics, magnetocaloric cooling, photocatalysis, gas-sensing devices, and energy conversion and storage systems were analyzed. This review highlights the structure–property–application relationship in perovskite manganites.
    Цитирования (OpenAlex) 2