Ring Transformationof NitropyrimidinoneLeading to Versatile Azaheterocyclic Compounds
A review on novel ring transformations of dinitropyridones and nitropyrimidinones. The synthesis of functionalized molecules, such as nitroanilines, nitropyridines by the ring transformation of dinitropyridones as the nitromalonaldehyde equivalent.
Подобные документы
Two possible approaches to the phenothiazine ring that, to the authors’ knowledge, have not been explored yet. The attack of a nitrene onto a diary sulde, the "nitrogen equivalent" of the thionation reaction. The diene character of ve-membered rings.
научная работа, добавлен 05.03.2013Substituent tautomerism of six-membered ring heterocycles. Compounds with one, two or more potentially tautomeric functional group. The prototropic tautomerism of hydroxypyridine is a prototype for oxo-hydroxy tautomerization processes in heterocycles.
статья, добавлен 05.03.2013By Reaction with Alkyl Halides. Nucleophilic Addition. Oxidation of Ring Carbon Atoms Followed by Addition. Reduction of Exocyclic Double Bonds. Ring Cleavage Reactions. Coupling of Pyrazol-3-ones with Aryl Diazonium Salts. Oxidative Coupling, silylation.
учебное пособие, добавлен 05.03.2013Benzisothiazolium Salts. Heterocyclic Annulated Isothiazolium Salts. Structure. X-ray Diffraction. Molecular Spectra. Analytical methods. Reactivity, general survey. Oxidation to Sultims and Sultams. Ring Transformation in Other Heterocyclic Compounds.
статья, добавлен 05.03.2013Thiophene ring closure in pyridine derivatives. Syntheses of tri- and polycyclic systems based on thienopyridines. Pyridine ring closure in thiophene derivatives. Methods for the preparation of thieno[3,2-b]pyridine derivatives and their properties.
статья, добавлен 05.03.2013Using phosphoric acid and phosphor pent oxide as new catalyst for preparing of derivatives of benzoxazole. Use of benzoaxol ring in medicinal chemistry. Synthesis of 1,3-(Benzene-1,3-diyl) bis(benzoxazole). Synthesis of 3-(2-Hydroxynaphthol) benzoxazole.
статья, добавлен 21.01.2021Purines fused with five-membered heterocycles: pyrrolo-, oxazolo-, thiazolo-, imidazo-, pyrazolo-, triazolo- and tetrazolo-purines. Purines annulated with five-membered rings. Compounds with a greater selective efficacy without the unwanted side-effects.
статья, добавлен 05.03.2013History of the nucleophilic substitution of hydrogen in aromatic compounds, obtaining picric acid. Survey of SNH Substitution. Heterocyclizations Based on SNH Reactions. Intramolecular One-Step SNH Cyclizations; cascade Sequences Based on SNH Reactions.
научная работа, добавлен 05.03.2013The applications of leuco-dyes, of spiro compounds and tetrazolium salts. The transformation of the molecules in thermal and photo-imaging systems. Leuco compounds which are not formed by reduction of the parent dye. The chemistry of the phthalides.
книга, добавлен 05.03.2013Reductive opening of heterocycles as a source of functionalized organolithium compounds. Methods for homologation of heterocycles. Double lithiation of thianthrene. Phthalan: a versatile starting material. Homologation of six-membered heterocycles.
статья, добавлен 05.03.2013Heterocycles with one, two, three and four heteroatoms. Fused heterocycles incorporating pyridine rings. Quinolines, isoquinolines, and their fused rings. Spiroheterocycles and a solvent-free one-pot reaction of a mixture of meldrum’s or barbituric acid.
учебное пособие, добавлен 05.03.2013Convenient method of synthesis of optically active oxamoylaminoacids. Compounds have significant hepatoprotective, antiinflammatory and immunodepressant activities with low toxicity. Influence of investigated sudstances on rarametrs of specific immunity.
статья, добавлен 15.02.2014Applications heterocyclic compounds; approaches to synthesis. Familiarization with effective conversion of organic compounds into valuable fluorinated products. The use of fluorinated triazoles for the protection of metals and alloys from corrosion.
научная работа, добавлен 05.03.2013Synthesis of a polymer by the reaction between maleic acid and 2-methylquinoxaline 1,4-dioxide. Using photocatalysis during synthesis. The reaction of the polymer with maleic acid molecules. Determination of the reaction mechanism and polymer structure.
статья, добавлен 03.11.2020Testing scheme of the synthesis of ester atsalamov acids and subsequent cyclization of the intermediate 3-hydrazinopyridazine-2-ones with carbonyl-containing compounds to provide chemical diversity of the final products containing a practical substitute.
статья, добавлен 20.03.2016Synthesis semizwitterionic viologens for the crystal engineering of functional materials. Application of the control positions of molecules in crystals using hydrogen bonds. The triple helices had obtained by tunig the spacer between donor and acceptor.
статья, добавлен 17.02.2014Drugs based on the 1,2,4-triazole have a wide spectrum of biological activities. They are effective cardioprotectors, hepatoprotectors, anti-oxidants. Compounds with strong diuretic activity have been found among the newly synthesized compounds.
статья, добавлен 13.01.2017- 18. Synthesis and crystal structure of an Ag(I) complex of composition (C9H7N(C3H5))2[AgBr2]Br(H2O)2
Coordination behavior of Ag (I) with cations of N-allyl quinolinium. Synthesis of N-allyl quinolinium bromide. Determination of the structure of the x-ray crystal. Bromine ions of the second crystallographic type. Study silver nitrate compounds.
статья, добавлен 23.02.2017 Consideration of the results of x-ray diffraction of the considered chemical compounds. Structural properties of the films of magnesium oxide. Substantiation of optimum parameters of temperature of synthesis of organic and many inorganic compounds.
статья, добавлен 30.07.2016Chemical properties of organic compounds derived from ammonia. The mechanism of substitution of hydrogen for hydrocarbon radicals within molecules. Classification of the most common amines. Familiarization with the formula for the secondary amine.
презентация, добавлен 06.12.2016New facile method for the controllable synthesis of high quality single-phase nanowires with from nanowires templates. Detailed characterization of the superconducting and transport properties of nanowires. Synthesis of porous nanowires and nanotubes.
статья, добавлен 30.07.2016Synthesis of a methacrylic azomonomers based on para-aminoacetanilide to obtain functionalized polymers for orientation of liquid crystals. The kinetics of polymerization of synthesized azomonomers. Constants of thermo-induced radical polymerization.
статья, добавлен 21.12.2016- 23. Ir spectroscopy and tg analysis investigations of functionalized go and go-containing divinyl rubber
Analysis of the results of a study of graphene oxide and divinely rubber containing graphene oxide, functioning-RO (Oh)2 slot groups as a result of a kill-chlorophosphorylation reaction under the action of PCl3 in the presence of oxygen. Synthesis of GO.
статья, добавлен 10.05.2018 Reviews on "Heterocyclic Compounds" on aspects such as synthesis, reactionmechanisms, structure complexity, properties, reactivity, stability, fundamental and theoretical studies, biology, biomedical, pharmacology, applications in material sciences.
материалы конференции, добавлен 05.03.2013- 25. Copper(II) and nickel(II) with N-bis(salicylidene)thiosemicarbazide heterometal complex compounds
Heterometal coordination compounds of copper(II), nickel(II), alkaline-earth metals with N-bis(salicylidene)thiosemicarbazide have been synthesized. Using elemental analysis has been shown that the synthesized compounds have semi-conducting properties.
статья, добавлен 30.08.2016