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合成了7种含三氮唑的硫代(或二硫代)氨基磷酸酯衍生物。通过元素分析、IR及1HNMR确证了化合物的结构。生物活性测试结果表明,这些化合物均有一定的杀菌、除草和植物生长调节活性。 相似文献
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1,2 二芳取代 1,1’ 二氟乙烷主要用作混合液晶添加剂以达到降低粘度增加响应速度的作用,同时也可以增加混晶的工作温度范围和抗紫外辐照的能力,并且能够实现低压驱动,文献报道的4种合成方法(硫缩醛的氟化、炔的氟化加成、酮的氟化以及腙的氟化[1,2])或反应条件苛刻,或转化率低,作者参考文献[3,4,5]对反应改进后发现,当在80℃、DAST(二乙胺基三氟化硫络合物)与乙二醇二甲醚的混合溶剂(体积比为3∶1)中进行酮的氟化反应时可达到95%的转化率。合成路线如下。1 实验部分1 1 仪器与试剂美国Nicolet60XR型红外光谱仪,日本JEOL公司FX … 相似文献
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3,6—二芳基—1,2,4—三唑并[3,4,b]—1,3,4—噻二唑化合物的合成 总被引:1,自引:1,他引:0
3-芳基-4-氨基-5-巯基-1,2,4-三唑与芳酸在三氯氧磷的作用下合成了10个标题化合物,通过元素分析、红外光谱、核磁共振氢谱和质谱确证了它们的结构.对反应条件作了简略的讨论.部分化合物具有较强的生物活性. 相似文献
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2,2-二(4-羟基-3,5-二硝基苯基)丙烷和2,2-二(4-羟基-3-硝基苯基)丙烷的合成 总被引:2,自引:0,他引:2
双酚A在不同的ω(HNO3)溶液中硝化可得到不同的产物。在ω(HNO3)=22%的硝酸溶液中硝化,反应温度30℃所得产物为2,2-二(4-羟基-3-硝基苯基)丙烷,在ω(HNO3)=63%的硝酸溶液中硝化,采用三段温度控制法(0℃-30℃-50℃)所得产物为2,2-二(4-羟基-3,5-二硝基苯基)丙烷。产物经柱色谱纯化后,其元素分析、IR,^1H NMR,^13C NMR和MS数据与结构相符。 相似文献
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近年来,分子中含有1,2,4-三唑的非有机磷化合物作为杀菌剂和植物生长调节剂已受到广泛重视.为进一步开发有机磷和三唑类农药新品种,科学工作者合成了含三唑的有机磷化合物,发现某些化合物对植物的白粉病及锈病具有较强的生理活性,故进一步合成和研究各类新型含三唑的有机磷化合物具有较大的意义。作者曾报道某些含三唑的二硫代磷酸酯类化合物的合成及生物活性,发现某些化合物具有一定的杀菌、除草及调节植物生长作用. 相似文献
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2—芳基—5—巯基—1,3,4—三唑衍生物的合成 总被引:1,自引:2,他引:1
报道了7种双(2-芳基-1,3,4-三唑-5-基)二硫化物(2a ̄2g)和5种1-乙基-2-芳基-1,3,4-三唑-5-乙硫醚的合成。化合物结构经元素分析、红外光谱、核磁共振氢谱及质谱确证。生物活性测定结果表明,2b和3b具有较强的抗菌活性。 相似文献
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Martha Cecilia Rosales-Hernndez Jessica E. Mendieta-Wejebe Itzia I. Padilla-Martínez Efrn V. García-Bez Alejandro Cruz 《Molecules (Basel, Switzerland)》2022,27(18)
The (thio)urea and benzothiazole (BT) derivatives have been shown to have a broad spectrum of biological activities. These groups, when bonded, result in the 2-(thio)ureabenzothizoles (TBT and UBT), which could favor the physicochemical and biological properties. UBTs and TBTs are compounds of great importance in medicinal chemistry. For instance, Frentizole is a UBT derivative used for the treatment of rheumatoid arthritis and systemic lupus erythematosus. The UBTs Bentaluron and Bethabenthiazuron are commercial fungicides used as wood preservatives and herbicides in winter corn crops. On these bases, we prepared this bibliography review, which covers chemical aspects of UBTs and TBTs as potential therapeutic agents as well as their studies on the mechanisms of a variety of pharmacological activities. This work covers synthetic methodologies from 1935 to nowadays, highlighting the most recent approaches to afford UBTs and TBTs with a variety of substituents as illustrated in 42 schemes and 13 figures and concluded with 187 references. In addition, this interesting review is designed on chemical reactions of 2-aminobenzothiazoles (2ABTs) with (thio)phosgenes, iso(thio)cyanates, 1,1′-(thio)carbonyldiimidazoles [(T)CDI]s, (thio)carbamoyl chlorides, and carbon disulfide. This topic will provide information of utility for medicinal chemists dedicated to the design and synthesis of this class of compounds to be tested with respect to their biological activities and be proposed as new pharmacophores. 相似文献
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A. Yu. Egorova V. A. Sedavkina Z. Yu. Timofeeva 《Chemistry of Heterocyclic Compounds》2001,37(5):550-553
The amination of 4-oxoalkanoic acids and their esters by the action of ammonia and ammonium acetate leads to the formation of N-unsubstituted 5-alkyl(aryl)pyrrol-2-ones, which exist in solution in the form of a mixture of isomers in a ratio depending on the nature of the substituent at position 5 of the heterocycle. 相似文献
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2,4-Dichlorophenoxyacetyl(thio)urea and S-(+)-3-methyl-2-(4-chlorophenyl)butyramides were synthesized via acylation,aminolysis,esterification and addition reactions,and the partial new compounds have desirable bioactive activity. 相似文献
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Ali Kakanejadifard Toraj Hayati Azam Rezayat 《Phosphorus, sulfur, and silicon and the related elements》2013,188(7):1511-1515
A series of Schiff bases containing four to six coordination sites N2S2 X2(X = O,N) 2-(2-(2-(aryl)methyleneamino)phenylthio)ethylthio)-N-((aryl)methylene)benzeneamine (2c–f) were prepared from the reaction of 1,2-di(2-aminophenylthio)ethane (1) with aromatic aldehydes. All compounds were characterized by means IR, mass, 1H and 13C NMR spectroscopy, and elemental analysis, and in the case of 2b with a single crystal X-ray diffraction. The X-ray crystal structure of 2b showed that the resonance occurs between aromatic rings, through the C=N bonds of the molecule. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file. 相似文献
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6-取代-3-(3,4,5-三甲氧基苯基)-1,2,4-三唑[3,4-b][1,3,4]噻二唑的合成与生物活性 总被引:1,自引:0,他引:1
以3,4,5-三甲氧基苯甲酸为原料,通过4步反应得到4-氨基-5-(3,4,5-三甲氧基苯基)-3-巯基-1,2,4-三唑,再与取代芳酸反应,得到11个6-取代-3-(3,4,5-三甲氧基苯基)-1,2,4-三唑[3,4-b][1,3,4]噻二唑衍生物5a~5k。其结构经IR,1H NMR,MS和元素分析确证。初步生物活性测试结果表明部分化合物有一定的杀菌活性。 相似文献
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A procedure was developed for the preparation of 2- and 3-pyridinyl(aryl)methanones by the reactions of aryllithium with methyl pyridinecarboxylate and methyl esters of substituted phenylcarboxylic acids. 相似文献
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Andrey V. Khramchikhin Mariya A. Skrylnikova Iana L. Esaulkova Ekaterina O. Sinegubova Vladimir V. Zarubaev Maxim A. Gureev Aleksandra M. Puzyk Vladimir A. Ostrovskii 《Molecules (Basel, Switzerland)》2022,27(22)
This study of the interaction system of binucleophilic 3-substituted 4-amino-4H-1,2,4-triazole-5-thiols and 3-phenyl-2-propynal made it possible to develop a new approach to synthesis of such isomeric classes as 7-benzylidene-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine and 8-phenyl-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazepine. Among the 20 compounds studied in vitro against influenza A/Puerto Rico/8/34 (H1N1) virus, half of them demonstrated selectivity index (SI) of 10 or higher and one of them (4-((3-phenylprop-2-yn-1-yl)amino)-4H-1,2,4-triazole-3-thiol) possessed the highest (SI > 300). Docking results and values showed that the preferred interactant for our ligands was M2 proton channel of the influenza A virus. Protein-ligand interactions modeling showed that the aliphatic moiety of ligands could negatively regulate target activity level. 相似文献