Chemical Journal of Kazakhstan最新文献_第10页

ARYLSULPHONATES OF SPIROPYRAZOLINES AND O-TOSILATE-β-(BENZIMIDAZOL-1-YL)PROPIOAMIDOXYME AS THE PRODUCTS OF β-AMINOPROPIOAMIDOXIMES TOSYLATION 螺吡唑啉的芳基磺酸盐和邻苯甲磺酸盐-β-(苯并咪唑-1-酰基)丙胺肟甲酰基化产物

Chemical Journal of Kazakhstan Pub Date : 2021-06-30 DOI: 10.51580/2021-1/2710-1185.25

L. Kayukova, G. Baitursynova, E. Yergaliyeva, B. A. Zhaksylyk, N. Yelibayeva, A. Kurmangaliyeva, Almaty Kazakhstan Jsc «Al-Farabi KazNU»

{"title":"ARYLSULPHONATES OF SPIROPYRAZOLINES AND O-TOSILATE-β-(BENZIMIDAZOL-1-YL)PROPIOAMIDOXYME AS THE PRODUCTS OF β-AMINOPROPIOAMIDOXIMES TOSYLATION","authors":"L. Kayukova, G. Baitursynova, E. Yergaliyeva, B. A. Zhaksylyk, N. Yelibayeva, A. Kurmangaliyeva, Almaty Kazakhstan Jsc «Al-Farabi KazNU»","doi":"10.51580/2021-1/2710-1185.25","DOIUrl":"https://doi.org/10.51580/2021-1/2710-1185.25","url":null,"abstract":"Pyrazolinium structures have practically valuable biological properties. Their methods of synthesis mainly consist in the reactions of cyclization of steroid compounds containing an enone fragment with a variety of hydrazines. We have previously obtained new spiropyrazolinium compounds by hydrolysis of 3-(β-heteroamino)ethyl-5-aryl-1,2,4-oxadiazoles and by arylsulfochlorination of β-aminopropioamidoximes. The aim of the work is to reveal the dependence of the structure of the final β-aminopropioamidoximes tosylation products from the structure of the starting amidoxime and strength of base. Methodology. The tosylation of β-aminopropioamidoximes was carried out in chloroform using diisopropylethylamine as a base. The synthesis was carried out at room temperature for 15–20 h. The progress of the reaction was monitored by TLC. After completion of the reaction, the precipitate was filtered off, followed by evaporation of the filtrate and additional precipitation of the product; the combined precipitates were recrystallized from isopropanol. Results and discussion. The products of tosylation of β-aminopropioamidoximes were obtained in 45‒65% yields and identified using physicochemical and spectral [IR, NMR (1H and 13C)] characteristics, tosylation of β-aminopropioamidoximes (β-amino group: piperidin-1-yl, morpholine -1-yl, thiomorpholin-1-yl, 4-phenyl-piperazin-1-yl) proceeds with the formation of spirocyclic compounds ‒ arylsulfonates of 2-amino-1,5-diazaspiro [4.5]-dec-1-ene-5-ammonium; tosylation of β-(benzimidazol-1-yl)propioamidoxime gives the product on the oxygen atom of the amidoxime group.","PeriodicalId":9856,"journal":{"name":"Chemical Journal of Kazakhstan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91450146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Structure and Properties of the di- ((2S) -2-amino-3- (1H-indol-3-yl)propionate)-dihydro-tetraiodide 二- (2S) -2-氨基-3- (1h -吲哚-3-酰基)丙酸二氢四碘化物的结构与性质

Chemical Journal of Kazakhstan Pub Date : 2021-06-30 DOI: 10.51580/2021-1/2710-1185.31

A. Sabitov, S. Turganbay, A. Dzhumagazieva

引用次数: 0

THE ECOLOGICAL CONDITION OF THE GEOSYTEMS OF THE LAKE ALAKOL 盐湖地质系统的生态状况

Chemical Journal of Kazakhstan Pub Date : 2021-06-30 DOI: 10.51580/2021-1/2710-1185.23

G. Mukanova, M. A. Tileuzhanova, K. Sadykov

{"title":"THE ECOLOGICAL CONDITION OF THE GEOSYTEMS OF THE LAKE ALAKOL","authors":"G. Mukanova, M. A. Tileuzhanova, K. Sadykov","doi":"10.51580/2021-1/2710-1185.23","DOIUrl":"https://doi.org/10.51580/2021-1/2710-1185.23","url":null,"abstract":"The water management Basin is a geoecological system, the core of which is rivers, and the connecting elements are waste water. Therefore, it is very important to study and recognize not only the Basic Laws of the functioning of this geosystem, but also the processes that ensure its Sustainable Development and dynamics of evolution and allow us to develop reliable and at the same time safe water use management methods for Natural Resources. The article considers the geoecological situation of the Alakol watershed. Physical and chemical studies of the Alakol Basin, the lake system located on the territory of two administrative districts of East Kazakhstan region and Alakol District of Almaty region were carried out according to St RK 1432-2005. Territorial recreational systems located on the shores of the lake near the villages of Akshi, Koktuma, Kabanbai, Koktal are subject to the greatest anthropogenic impact in the process of recreational use, so the basis of our research is an assessment of their geoecological state. According to the results of research in the waters of the Alakol water reservoir on hydromorphological parameters, a large number of dangerous pollutants, including compounds of heavy metals, pesticides, ammonia, ammonium, ammonium, ammonium, ammonium. Based on this analysis, it is possible to determine the specifics of the formation of the level of contamination in the basin of Lake Alakol, as well as to compare the level of contamination and classify the range of concentrations of the element under study. This, in turn, will allow the public to assess the level of pollution of water resources and adopt appropriate solutions.","PeriodicalId":9856,"journal":{"name":"Chemical Journal of Kazakhstan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85053610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DETERMINATION OF THE CONCENTRATION AND SEPARATION OF VANADYLPORPHYRIN COMPLEXES BY EXTRACTION FROM OIL OF THE OIL AND GAS DISTRICT “NORTH BUZACH” 北布扎克油气区原油萃取钒基卟啉络合物的浓度测定及分离

Chemical Journal of Kazakhstan Pub Date : 2021-06-30 DOI: 10.51580/2021-1/2710-1185.27

Z. Myltykbayeva, Z. Yeshova, A. Seisembekova, M. Smaiyl

引用次数: 0

INVESTIGATION OF VARIOUS PHOSPHATE CORROSION INHIBITORS IN CARBON DIOXIDE 各种磷酸盐缓蚀剂在二氧化碳中的研究

Chemical Journal of Kazakhstan Pub Date : 2021-06-30 DOI: 10.51580/2021-1/2710-1185.32

A. Niyazbekova, T. Shakirov, G.N. Urinbaeva

引用次数: 0

PREVENTING INORGANIC SCALE FORMATION IN THE UZEN AND ZHETYBAI FIELDS BY USING SCALE INHIBITORS 应用阻垢剂防治乌津、浙特白油田无机结垢

Chemical Journal of Kazakhstan Pub Date : 2021-06-30 DOI: 10.51580/2021-1/2710-1185.28

A. Tarbanov, A. Khabiev, Y. Ayapbergenov

{"title":"PREVENTING INORGANIC SCALE FORMATION IN THE UZEN AND ZHETYBAI FIELDS BY USING SCALE INHIBITORS","authors":"A. Tarbanov, A. Khabiev, Y. Ayapbergenov","doi":"10.51580/2021-1/2710-1185.28","DOIUrl":"https://doi.org/10.51580/2021-1/2710-1185.28","url":null,"abstract":"Development of the oil industry in Kazakhstan at the current stage is characterized by a decrease in the quality of the raw material base. In the total balance of fields under development, the fields that have entered the late stage of development prevail and, consequently, there is a significant deterioration in their structure, an increase in the share of hard-to-recover oil reserves, watering of beds and well production.One of the main challenges during the development of the field is the deposition of inorganic salts in the oilfield equipment. This article describes the main reasons for the formation of solid inorganic deposits in oil fields, methods of scale inhibitors, as well as the classification of scale inhibitors. Presents the physical and chemical characteristics of the objects under study: the properties of oils and watersof Uzen and Zhetybai oil fields and the chemical reagents – inhibitors of scale formations. Based on the results of laboratory studies, scale inhibitors were selected, which showed high efficiency (90 - 100 %) to prevent the precipitation of CaCO3, CaSO4 and BaSO4 under the conditions of Uzen and Zhetybai oil fields. The study was conducted in the center of scientific and laboratory research branch of KMG Engineering LLP \"KazNIPImunaygas\".","PeriodicalId":9856,"journal":{"name":"Chemical Journal of Kazakhstan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76033156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SYNTHESIS OF POLYIMIDES OF ARILACYCLIC STRUCTURE 苯环结构聚酰亚胺的合成

Chemical Journal of Kazakhstan Pub Date : 2021-06-30 DOI: 10.51580/2021-1/2710-1185.34

A. V. Druzhinina, M. Suleimenova, O. A. Almabekov, A. K. Kusainova

{"title":"SYNTHESIS OF POLYIMIDES OF ARILACYCLIC STRUCTURE","authors":"A. V. Druzhinina, M. Suleimenova, O. A. Almabekov, A. K. Kusainova","doi":"10.51580/2021-1/2710-1185.34","DOIUrl":"https://doi.org/10.51580/2021-1/2710-1185.34","url":null,"abstract":"The article describes methods for producing polymeric materials based on tetra-carboxylic acid dianhydrides obtained by photochemical or solar irradiation from furan and maleic anhydride. The procedure of synthesis of aryl-alicyclic polyimides based on 7-оxsоdiciklo (2,2,1)-gepten -2,3- dicarboxylic acid(MAF) and diaminodiphenyl oxide diamines (DADFO) and dioxytriphenyldiamine (DOTFDA) in polar aprotic amide-type solvents has been studied in detail in the presence of a basic catalyst type: trimethyl-amine.The nature and reactivity of staring monomers affect the process of obtaining polyimides. The optimal conditions for obtaining polyimides with intrinsic viscosity values of 1.30-1.64 dl/g have been found. Physicochemical, electrical and thermal proper-ties of the synthesized polyimides have been investigated. It was found that they have increased elasticity, high tensile strength. Elongation at break of polyimide films reaches 30-43%, tensile strength is 130-180 MPa. According to their electrical properties, these polyimides are classified as medium-frequency dielectrics. In addition, they differ in thermoplasticity in the range from 210 ºС to 250 ºС, have thermal stability and do not decompose at heating in air to temperatures of 335-390 ºС, and the presence of oxide groups in the structure of polymers increases the solubility of polyimides.","PeriodicalId":9856,"journal":{"name":"Chemical Journal of Kazakhstan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81119354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

OBTAINING MESOPHASE PITCHES FROM COAL TAR 从煤焦油中提取中间相沥青

Chemical Journal of Kazakhstan Pub Date : 2021-06-30 DOI: 10.51580/2021-1/2710-1185.24

A. Imangazy

{"title":"OBTAINING MESOPHASE PITCHES FROM COAL TAR","authors":"A. Imangazy","doi":"10.51580/2021-1/2710-1185.24","DOIUrl":"https://doi.org/10.51580/2021-1/2710-1185.24","url":null,"abstract":"This article presents the results of research on mesophase pitch production from coal tar. The preparation of mesophase pitch was carried out by heat treatment in an argon atmosphere at temperatures of 300, 350, and 400 °C. The resulting carbon pitches were analyzed by scanning electron microscopy, Raman spectroscopy, and energy-dispersive analysis. An increase in the degree of surface degradation and the number of mesophase centers per unit area was observed with an increase in the treatment temperature to 300 °C. At 350 °C, a transition from an isotropic to an anisotropic structure was observed, where the mesophase centers were about 2 μm in size. A similar anisotropic structure was observed for a sample of coal tar obtained at 400 °C, and in some areas, a layered structure was observed, which could be associated with an increase in the graphitization degree of the samples. The particle size of the mesophase increases to 3.5-5 microns. The results of energy dispersive analysis showed that an increase in temperature leads to a decrease in the sulfur content. At 400 °C, sulfur is completely removed from the coal tar pitch composition. A correlation between the heat treatment temperature and the structure of the obtained pitch was established.","PeriodicalId":9856,"journal":{"name":"Chemical Journal of Kazakhstan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88597917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

EXTRACTION OF YTTRIUM IONS BY INTERPOLYMER SYSTEMS BASED ON INDUSTRIAL IONITES 基于工业离子离子的互聚体系萃取钇离子

Chemical Journal of Kazakhstan Pub Date : 2021-03-14 DOI: 10.51580/2021-1/2710-1185.14

T. Jumadilov, B. Totkhuskyzy, L. Yskak, J. Gražulevičius

引用次数: 0

INFLUENCEOFCROSSLINKINGAGENTON ELECTROCHEMICAL AND CONFORMATIONAL BEHAVIOR OF MOLECULARLY IMPRINTED POLYMERS BASED ON METHACRYLIC ACID AND 4-VINYLPYRIDINE IN AN AQUEOUS MEDIUM 交联剂对甲基丙烯酸和4-乙烯基吡啶分子印迹聚合物在水介质中的电化学和构象行为的影响

Chemical Journal of Kazakhstan Pub Date : 2021-03-14 DOI: 10.51580/2021-1/2710-1185.11

T. Jumadilov, R. Kondaurov, A. Imangazy, Khuangul Khimersen

{"title":"INFLUENCEOFCROSSLINKINGAGENTON ELECTROCHEMICAL AND CONFORMATIONAL BEHAVIOR OF MOLECULARLY IMPRINTED POLYMERS BASED ON METHACRYLIC ACID AND 4-VINYLPYRIDINE IN AN AQUEOUS MEDIUM","authors":"T. Jumadilov, R. Kondaurov, A. Imangazy, Khuangul Khimersen","doi":"10.51580/2021-1/2710-1185.11","DOIUrl":"https://doi.org/10.51580/2021-1/2710-1185.11","url":null,"abstract":"Molecularly imprinted polymers (MIPs) based on methacrylic acid (MAA) and 4-vinylpyridine (4VP) of two types have been synthesized (the difference in types is based on the use of ethylene glycol dimethacrylate (EGDMA) and diethylene glycol dimethacrylate (DEGDMA) as a crosslinking agent). Salts of cerium, praseodymium, neodymium, samarium, and europium were used as templates for the synthesis. Control samples of Molecularly imprinted polymers were also synthesized (samples synthesized in exactly the same way, but without the templates).Electrochemical and conformational behavior of the synthesized structures in an aqueous medium was studied. Molecularly imprinted polymers are weakly exposed to swelling and ionization due to tight crosslinking, while it should be noted that a high degree of crosslinking leads to high mechanical strength of macromolecular structures.Comparison of the measured parameters (electrical conductivity, pH) of molecularly imprinted polymers containing a template with control samples of MIP indicate the presence of cavities complementary to the template (rare-earth metal ion) used in their synthesis. In the presence of MIP synthesized in the presence of EGDMA (MIP-1) higher values of electrical conductivity and pH are observed as compared to MIP synthesized in the presence of DEGDMA (MIP-2) due to less tight crosslinking.","PeriodicalId":9856,"journal":{"name":"Chemical Journal of Kazakhstan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85834338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0