A 10 A new approach to condensed pyridines [Electronic resource] / M. M. Krayushkin, V. N. Yarovenko, I. P. Sedishev, A. A. Andreiko, N. N. Mochul`skaya, V. N. Charushin // Mendeleev Communications. - 2005. - Vol. 15, № 4. - P151-152 Рубрики: ХИМИЧЕСКИЕ НАУКИ \\\\Cserver\\Dist\\НБО\\Электронная библиотека_Библиогр1\\Mendeleev Communications\\2005, v.15, N 4,p.151.pdf |
S 98 Synthesis of pyridines from 1,2,4-triazines under high pressure [Electronic resource] / M. M. Krayushkin, I. P. Sedishev, V. N. Yarovenko, I. V. Zavarzin, S. K. Kotovskaya, D. N. Kozhevnikov, V. N. Charushin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2008. - Vol. 44, № 3. - P407-411 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: A procedure has been proposed for the synthesis of pyridines from 1,2,4-triazine derivatives and bicyclo[2.2.1]hepta-2,5-diene under high pressure in the presence of lithium perchlorate as catalyst \\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2008, 44 (3), 407.pdf |
T 19 Tandem AN—AN reactions in the synthesis of 1H-pyrrolo[3,2-e]-1,2,4-triazines and products of their oxidative transformations [Electronic resource] / V. N. Charushin, N. N. Mochul`skaya, A. A. Andreiko, M. I. Kodess, I. A. Litvinov, O. G. Sinyashin, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2003. - Vol. 52, № 8. - P1740-1749 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The reactions of 3-aryl-1,2,4-triazines with -aminovinyl ketones or ethyl -aminocrotonates in acetic anhydride at room temperature afforded cyclic products of the tandem nucleophilic addition, viz., 3a,4,7,7a-tetrahydro-1H-pyrrolo[3,2-e]-1,2,4-triazines, in good yields. Under oxidative conditions, the latter compounds underwent the pyrrole-ring opening under the action of potassium permanganate to form the corresponding triazinones and were transformed into thriazolyl-substituted pyridines under the action of selenious acid \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2003, 52 (8), 1740.pdf |
2,6-Bis(5-trifluoromethylpyrazol-3-yl)pyridine : complexation with selected d-metals [Text] : доклад, тезисы доклада / E. F. Khmara, D. L. Chizhov, A. A. Sidorov, G. G. Alexandrov, V. I. Filyakova, G. L. Rusinov, I. L. Eremenko, V. N. Charushin // International conference "Topical Problems of Organometallic and Coordination Chemistry", V Razuvaev lectures, N. Novgorod, September 3-9 2010 : book of abstracts . - Nizhny Novgorod, 2010. - P34 : рис. - Bibliogr. : p. 34 (2 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ |
C 47 Charushin, V. N. Ring transformations in reactions of heterocyclic compounds with nucleophiles. The conversion of 5-nitropyrimidine into pyridine derivatives by CH-acitve nitriles [Electronic resource] / V. N. Charushin, H. C. Van der Plas // Recueil des Travaux Chimiques des Pays-Bas. - 1983. - Vol. 102, № 7-8. - P373-377. - Bibliogr. : p. 377 (19 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): 5-NITROPYRIMIDINES -- CH-ACITVE NITRILES Аннотация: Nitriles R–CH2CN where R is CN, SO2C6H5, C6H4-NO2-p, C6H4-CF3-m, are effective reagents for converting 5-nitropyrimidine (1) into 2-amino-5-nitro-3-R-pyridines (7). In reactions of 1 with cyanoacetic acid derivatives (methyl, ethyl, tert-butyl esters), 3-cyano-5-nitro–2(1H)-pyridone is formed in addition to 7. Ketonic nitriles, such as 3-oxobutyronitrile and 3-oxo–3-phenylpropionitrile, react with 1 to form 2-methyl- and 2-phenyl-5-nitro-3-cyanopyridine, respectively. Plausible mechanisms are discussed. The reaction of 1 with N-(cyanoacetyl)carbamate provides a facile synthetic route to 1,2,3,4-tetrahydro-6-nitropyrido[2,3-d]pyrimidine-2,4-dione. \\\\expert2\\nbo\\Recueil des Travaux Chimiques des Pays-Bas\\1983. V. 102, N 7-8. P. 377.pdf |
S 98 Synthesis of 6-thienyl-substituted 2-amino-3-cyanopyridines [Electronic resource] / E. V. Verbitskiy, E. M. Cheprakova, M. G. Pervova, G. G. Danagulyan, G. L. Rusinov, O. N. Chupakhin, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2015. - С. 689-694. - Bibliogr. : p. 694 (25 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): PYRIMIDINES -- TRANSFORMATIONS OF HETEROCYCLE -- PYRIDINES Аннотация: An efficient method for the synthesis of 6-thienyl-substituted 2-amino-3-cyanopyridines by the ring transformation in the corresponding pyrimidines was developed. Further modification of the pyridines obtained under conditions of a room temperature aerobic Suzuki reaction in the presence of trans-bis(dicyclohexylamine) palladium(II) acetate as a catalyst was studied. \\\\expert2\\nbo\\Russian Chemical Bulletin\\2015, 64 (3), 689-694.pdf |
R 30 Reactivity of 3-alkynylthio-1-ethyl-1,2-4-triazinium salts in intramolecular Diels-Alder reactions [Electronic resource] / V. N. Charushin, Beb Van Veldhuizen, Henk C. van der Plas, Casper H. Stam // Tetrahedron. - 1989. - Vol. 45. - С. 6499-6510. - Bibliogr. : p. 6510 (20 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): 1,2,4-TRIAZINES -- TRIETHYLOXONIUM TETRAFLUOROBORATE -- DIELS-ALDER REACTIONS Аннотация: Quaternization of 3-(3-butynylthio) and 3-(4-pentynyltio) substituted 1,2,4-triazines with triethyloxonium tetrafluoroborate in CH2Cl2 at room temperature occurs exclusively at N-1 yielding 3-alkynylthio-1-ethyl-1,2,4-triazinium salts, as unequivocally shown by the 13C NMR and X-ray crystallographic data. 3-Alkynylthio-1-ethyl-5-phenyl-1,2,4-triazinium salts undergo the intramolecular Diels-Alder reaction into the corresponding thieno [2,3-b]- and thiopyrano [2,3-b]pyridines under considerably milder conditions than the corresponding neutral 1,2,4-triazines. \\\\expert2\\nbo\\Tetrahedron\\1989, v. 45, p. 6499.pdf |
U 52 Unexpected formation of diethyl 2-ethoxy-6-CF.sub.3-2H-pyran-3,5-dicarboxylate from the condensation of ethyl 4,4,4-trifluoroacetoacetate with CH(OEt).sub.3 / Y. S. Kudyakova, D. N. Bazhin, P. A. Slepukhin, Ya. V. Burgart, V. I. Saloutin, V. N. Charushin // Tetrahedron Letters. - 2017. - Vol. 58, № 8. - P744-747 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): PYRAN -- DETRIFLUOROACETYLATION -- ETHYL TRIFLUOROACETOACETATE -- CONDENSATION -- PYRIDINES Аннотация: The one-step preparation of diethyl 2-ethoxy-6-CF3-2H-pyran-3,5-dicarboxylate via the condensation of ethyl 4,4,4-trifluoroacetoacetate with CH(OEt)3 has been reported and a plausible mechanism for this transformation is discussed. To demonstrate the synthetic potential of the obtained pyran, the reactions with ammonia and aromatic amines to give trifluoromethylated pyridine derivatives are presented. |
Design of fluorescent sensors based on azaheterocyclic push-pull systems towards nitroaromatic explosives and related compounds: a review / E. V. Verbitskiy, G. L. Rusinov, O. N. Chupakhin, V. N. Charushin // Dyes and pigments. - 2020. - Vol. 180. - P108414 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): NITROAROMATIC EXPLOSIVES -- FLUORESCENCE QUENCHING -- PYRIDINES -- PYRAZINE -- PYRIMIDINES -- TRIAZINES Аннотация: Highly sensitive and selective detection of nitro containing high energy organic compounds such as picric acid (PA), 2,4,6-trinitrotoluene (TNT) and 2,4-dinitrotoluene (DNT) has become a challenging task due to concerns over national security, criminal investigations and environment protections. Among various known detection methods, fluorescence sensors have gained special attention in recent time. The family of fluorescent sensors based on push-pull systems that incorporate nitrogen heterocycles as an electron-withdrawing group have a growing interest due to their high sensitivity, selectivity and easy tuning. The fluorescent sensors discussed in this review are classified and organized according to used azaheterocyclic scaffold, their functionality and their ability to detect of nitroaromatics by fluorescence quenching. |
A 10 A new synthesis of 4'-trifluoromethyl-2,2':6',2"-terpyridine / V. I. Filyakova, N. S. Boltacheva, M. G. Pervova, V. N. Charushin // Mendeleev Communications. - 2021. - Vol. 31, № 3. - P388-389 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ORGANOFLUORINE COMPOUNDS -- b-AMINOVINYL KETONES -- REGIOISOMERISM -- HETEROCYCLIZATION -- PYRIDINES -- 2,2':6',2''-TERPYRIDINES Аннотация: Reflux of two isomeric 3-amino-4,4,4-trifluoro-1-(2-pyridyl)but-2-en-1-one and 3-amino-1,1,1-trifluoro-4-(2-pyridyl)-but-3-en-2-one in acetic acid affords 4′-trifluoromethyl-2,2′:6′,2″-terpyridine (37%) with 1.4% admixture of 6′-trifluoromethyl-2,2′:4′,2″-terpyridine. |
Synthesis and photophysical properties of pyridyl- and quinolinyl-substituted bis(arylthienyl)pyridines / T. N. Moshkina, E. V. Nosova, A. E. Kopotilova [et al.] // Journal of photochemistry and photobiology A: Chemistry. - 2022. - Vol. 427. - Ст. 113805 Рубрики: ХИМИЧЕСКИЕ НАУКИ |