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71.
Zyryanov V. A. Postovskii I. Ya. Nirenburg V. L. Rusinov V. L. 《Chemistry of Heterocyclic Compounds》1978,14(3):346-347
Chemistry of Heterocyclic Compounds - 相似文献
72.
V. L. Rusinov T. V. Dragunova V. A. Zyryanov G. G. Aleksandrov N. A. Klyuev O. N. Chupakhin 《Chemistry of Heterocyclic Compounds》1984,20(4):455-459
The reaction of the tetrazolediazonium ion with malonic acid dinitrile and nitroacetonitrile leads to the formation of 3-azido-5-amino-1,2,4-triazine derivatives. According to the mass-spectrometric data and the results of X-ray diffraction analysis, the crystalline compounds exist in the amino form. The facile hydrolysis of the amino and azido groups to azauracils is an argument in favor of the existence of the imino form in solution.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 557–561, April, 1984. 相似文献
73.
A Ru(II) porphyrin rapidly reacts with NO2/N2O4 with the formation of a stable Ru(II) nitrosyl nitrato complex. 相似文献
74.
[reaction: see text] A novel class of stable, mild, and size-shape-selective nitrosating agents for secondary amides is introduced. These are based on reversible entrapment and release of reactive nitrosonium species by calix[4]arenes. The NO(+) encapsulation controls the reaction selectivity. 相似文献
75.
The reactions of 3-aryl-1,2,4-triazin-5(2H)-ones with indoles and pyrroles in the presence of p-toluenesulfonyl chloride afforded 3-aryl-6-hetaryl-1,2,4-triazin-5(2H)-ones in high yields. The latter are products of the nucleophilic substitution of hydrogen. 相似文献
76.
Fluorescent Detection of 2,4‐DNT and 2,4,6‐TNT in Aqueous Media by Using Simple Water‐Soluble Pyrene Derivatives
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Dr. Igor S. Kovalev Olga S. Taniya Nataliya V. Slovesnova Grigory A. Kim Dr. Sougata Santra Prof. Grigory V. Zyryanov Dr. Dmitry S. Kopchuk Prof. Adinath Majee Prof. Valery N. Charushin Prof. Oleg N. Chupakhin 《化学:亚洲杂志》2016,11(5):775-781
Pyrene‐containing water‐soluble probes for the fluorescent detection of nitroaromatic compounds (NACs), such as explosive components (2,4‐DNT and 2,4,6‐TNT) and herbicides (2,4‐dinitrocresol, 2,4‐DNOC), in aqueous media are reported. In the probes, the introduction of surface‐active hydrophilic “heads” at the periphery of lipophilic (i.e., hydrophobic) pyrene “tails” resulted in the formation of highly fluorescent micelle‐like aggregates/pre‐associates in aqueous solutions at concentrations of ≤10?5 m . The enhanced fluorescence quenching of the herein reported architectures is achieved in the presence of ultra‐trace amounts of TNT or 2,4‐DNT with values of Stern–Volmer quenching constant close to 1×105 m ?1 and a detection limit as low as 182 ppb. The most hydrophilic probes demonstrated higher response to 2,4‐DNT over TNT. Filter paper test strips impregnated with 1×10?5 m solutions of the probes were able to detect TNT, 2,4‐DNT, and other NACs at levels as low as 50 ppb in water. 相似文献
77.
Palacios MA Wang Z Montes VA Zyryanov GV Anzenbacher P 《Journal of the American Chemical Society》2008,130(31):10307-10314
The focus of this study was to demonstrate that, in the luminescent sensors, the signal transduction may possibly be the most important part in the sensing process. Rational design of fluorescent sensor arrays for cations utilizing extended conjugated chromophores attached to 8-hydroxyquinoline is reported. All of the optical sensors utilized in the arrays comprise the same 8-hydroxyquinoline (8-HQ) receptor and various conjugated chromophores to yield a different response to various metal cations. This is because the conjugated chromophores attached to the receptor are partially quenched in their resting state, and upon the cation coordination by the 8-HQ, the resulting metalloquinolinolate complex displays a change in fluorescence. A delicate balance of conjugation, fluorescence enhancement, energy transfer, and a heavy metal quenching effect results in a fingerprint-like pattern of responses for each sensor-cation complex. Principal component analysis (PCA) and linear discriminant analysis (LDA) are used to demonstrate the contribution of individual sensors within the array, information that may be used to design sensor arrays with the smallest number of sensor elements. This approach allows discriminating between 10 cations by as few as two or even one sensor element. Examples of arrays comprising various numbers of sensor elements and their utility in qualitative identification of Ca(2+), Mg(2+), Cd(2+), Hg(2+), Co(2+), Zn(2+), Cu(2+), Ni(2+), Al(3+), and Ga(3+) ions are presented. A two-member array was found to identify 11 analytes with 100% accuracy. Also the best two of the sensors were tested alone and both were found to be able to discriminate among the samples with 99% and 96% accuracy, respectively. To illustrate the utility of this approach to a real-world application, identification of enhanced soft drinks based on their Ca(2+), Mg(2+), and Zn(2+) cation content was performed. The same approach to reducing array elements was used to construct three- and two-member arrays capable of identifying these complex analytes with 100% accuracy. 相似文献
78.
V. I. Lutsyk A. M. Zyryanov A. E. Zelenaya 《Russian Journal of Inorganic Chemistry》2008,53(5):794-799
Computer design with the kinematic specification of nonlinear and ruled surfaces is proposed for a T-x-y diagram of a ternary system with monotectic monovariant equilibrium. The three-dimensional model makes it possible not only to design any iso-or polythermal section but also to solve mass-balance problems associated with computer design of heterogeneous materials. 相似文献
79.
Reddy Guda Mallikarjuna Sravya Gundala Yuvaraja Gutha Camilo Alexandre Zyryanov Grigory V. Garcia Jarem Raul 《Research on Chemical Intermediates》2018,44(12):7491-7507
Research on Chemical Intermediates - Development of potent antibacterial and antifungal agents is a permanently new and unremitting investigation in the therapeutic field. Still, medicinal research... 相似文献
80.
Satyajit Samanta Rana Chatterjee Sachinta Mahato Alakananda Hajra Sougata Santra Grigory V. Zyryanov 《合成通讯》2018,48(14):1857-1866
An efficient and regioselective method was developed for the synthesis of β-(nitrooxy)-substituted amine derivatives by ring-opening of different aziridines with Zn(NO3)2·6H2O without using additives or catalyst. A library of β-(nitrooxy)-substituted amine derivatives having a variety of substituents has been synthesized. Excellent regioselectivity, high yields, clean reaction, ease of product isolation, easily accessible reactants, and solvent-free as well as environment friendly reaction conditions are the notable advantages of the present methodology. The nitrooxy derivative was successfully transformed into hydroxy derivative by simple reduction. Gram-scale synthesis demonstrates the potential applications of the present method. 相似文献