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1.
Инвентарный номер: нет.
   
   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.)
ББК 54
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
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2.
Инвентарный номер: нет.
   
   O-72


   
    Organolithium compounds in the nucleophilic substitution of hydrogen in arenes and hetarenes [Electronic resource] / I. S. Kovalev, D. S. Kopchuk, G. V. Zyryanov, V. L. Rusinov, O. N. Chupakhin, V. N. Charushin // Russian Chemical Reviews. - 2015. - Vol. 84, № 12. - С. 1191-1225. - Bibliogr. : p. 1224-1225 (237 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
NUCLEOPHILIC SUBSTITUTION -- HYDROGEN -- ARENES AND HETARENES
Аннотация: The review considers the most typical examples of the direct non-activated non-catalytic C–C bond formation in arenes and their metal complexes activated by electron-withdrawing substituents in the aromatic nucleus and in hetarenes (azines and their N-oxides, porphyrins, etc.) upon the reactions with aliphatic and (hetero)aromatic (hetero)organolithium nucleophiles. Particular attention is given to the direct introduction of nitroxide radicals and (hetero)organic moieties into mono-, di- and triazines and their N-oxides. The influence of the structures of the (hetero)aromatic substrate and the (hetero)organolithium nucleophile on the reaction pathway and rate and on the structure of the reaction product is analyzed.

\\\\expert2\\nbo\\Russian Chemical Reviews\\2015, V.84, N12, p. 1191-1225.pdf
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3.
Инвентарный номер: нет.
   
   T 19


   
    Tandem A(N)-A(N) reactions in the synthesis of tetrahydrothiazolo[4,5-e][1,2,4]triazines / N. N. Mochul`skaya, P. A. Slepukhin, V. N. Charushin, M. I. Kodess // Mendeleev Communications. - 2016. - Vol. 26, № 5. - С. 375-377. - Bibliogr. : p. 377 (14 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
TRIAZINES -- ACETIC ANHYDRIDE -- SYNTHESIS
Аннотация: Reaction of 3-aryl-1,2,4-triazines with S,N-dinucleophilic N-(het)arylthioureas in acetic anhydride at room temperature affords the cyclization products, tetrahydrothiazolo[4,5-e]-[1,2,4]triazines in good yields. The structure of the heterocyclic system thus formed was confirmed by X-ray diffraction analysis.

\\\\expert2\\NBO\\Mendeleev Communications\\2016, v.26, p. 375-377.pdf
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4.
Инвентарный номер: нет.
   
   T 82


   
    Transition-Metal-Free Cross-Dehydrogenative Coupling of Triazines with 5,7-Dihydroxycoumarins / I. A. Khalymbadzha, O. N. Chupakhin, R. F. Fatykhov, V. N. Charushin, A. V. Schepochkin, V. G. Kartsev // Synlett. - 2016. - Vol. 27, № 18. - С. 2606-2610. - Bibliogr. : p. 2609-2610 (20 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
TRIAZINES -- 5,7-DIHYDROXYCOUMARINS -- DEHYDROGENATIVE

\\\\expert2\\NBO\\Synlett\\2016, V.27, p.2606-2610.pdf
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5.
Инвентарный номер: нет.
   
   A 23


   
    Aerobic oxidative C-H/C-H coupling of azaaromatics with indoles and pyrroles in the presence of TiO2 as a photocatalyst [Electronic resource] / I. A. Utepova, M. A. Trestsova, O. N. Chupakhin, V. N. Charushin, A. A. Rempel // Green Chemistry. - 2015. - Vol. 17, № 8. - С. 4401-4410. - Bibliogr. : p. 4409-4410 (30 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
BOND ACTIVATION -- INHIBITORS -- HYDROGEN
Аннотация: In this paper we wish to report a highly selective and benign method for the double C-H/C-H coupling of azaaromatics with indoles or pyrrole in the presence of air oxygen/TiO2, as an effective photocatalytic oxidative system. It has been shown that this versatile approach can be applied for direct C-H functionalisation of a variety of azaaromatic systems, such as mono-, di- and triazines, substituted and unsubstituted azines and their benzo-annelated analogues.

\\\\expert2\\nbo\\Green Chemistry\\2015, v.17, N 8, p.4401-4410.pdf
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6.
Инвентарный номер: нет.
   
   R 30


   
    Reactions of azinium cations. 8. Electron structures of 3-substituted 1,2,4-triazines and protonation, quaternization, and reactions with nucleophiles [Electronic resource] / S. G. Alekseev, P. A. Torgashev, M. A. Fedotov, A. I. Rezvukhin, S. V. Shorshnev, A. V. Belik, V. N. Charushin, O. N. Chupakhin // Chemistry of Heterocyclic Compounds. - 1988. - Vol. 24, № 4. - С. 434-441. - Bibliogr. : p. 440-441 (34 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
1,2,4-TRIAZINES -- NUCLEOPHILES
Аннотация: The electron structures of 3-substituted 1,2,4-triazines and isomeric N-methyltriazinium salts were calculated by the CNDO/2 method. The results of the calculations were compared with the parameters of the 13C, 15N, and 14N NMR spectra, as well as with experimental data on the protonation, N-alkylation, and reactions of 1,2,4-triazines with simple nucleophiles. The protonation centers of 1,2,4-triazines were determined by means of 1H, 13C, and 14N NMR spectroscopy. The covalent adducts formed by the proton salts of 3-methoxy-, 3-methylthio-, 3-morpholino-, and 3-pyrrolidino-1,2,4-triazine with water and methanol were recorded by 1H NMR spectroscopy.

\\\\expert2\\nbo\\Chemistry of Heterocyclic Compounds\\1988, v.24, N 4, p. 434.pdf
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7.
Инвентарный номер: нет.
   
   B 39


   
    Behavior of Monocyclic 1,2,4-Triazines in Reactions with C-, N-, O-, and S-Nucleophiles [Electronic resource] / V. N. Charushin, S. G. Alexeev, O. N. Chupakhin, H. C. Van der Plas // Advances in Heterocyclic Chemistry. - 1989. - Vol. 46 (C). - С. 73-142. - Bibliogr. : p. 135-142 (200 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
1,2,4-TRIAZINES -- NITROGEN-CONTAINING HETEROCYCLES
Аннотация: Among the six-membered nitrogen-containing heterocycles the 1,2,4-triazines have attracted the attention of chemists for a long time. This is due to the fact that many 1,2,4-triazine derivatives are biologically active and are used in medicine and agriculture. Moreover, 1,2,4-triazines are of chemical interest. They proved to be very susceptible to attack by all kinds of nucleophiles, leading to the addition, and subsequently either substitution or cyclization, and ring transformation. This continuing and lively interest in this area of heterocyclic chemistry has produced a great number of publications and patent applications. This chapter concentrates on the behavior of monocyclic 1,2,4-triazines in reactions with C-, N-, 0-, and S-nucleophiles, because the important features of general character established for simple 1,2,4-triazines can evidently be applied to other derivatives including condensed 1,2,4-triazines.

\\\\expert2\\nbo\\Advances in Heterocyclic Chemistry\\1988. V. 46 (C). P. 73-142.pdf
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8.
Инвентарный номер: нет.
   
   C 98


   
    Cyclization of azinium cations with bifunctional nucleophiles. 27. Actoacetamides in synthesis of derivatives of a new heterocyclic system of pyrrolo[3,2-E]-1,2,4-triazine [Electronic resource] / S. G. Alekseev, V. N. Charushin, O. N. Chupakhin, G. G. Aleksandrov, S. V. Shorshnev, A. I. Chernyshev // Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. - 1989. - Vol. 38, № 7. - С. 1501-1507. - Bibliogr. : p. 1507 (14 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PYRROLO-1,2,4-TRIAZINES -- NUCLEOPHILIC DIADDITION -- ACETOACETOAMIDES
Аннотация: A new approach to the synthesis of condensed pyrrolo-1,2,4-triazines was carried out, based on the nucleophilic diaddition of acetoacetoamides to 1,2,4-triazine derivatives

\\\\expert2\\nbo\\Russian Chemical Bulletin\\1989. V. 38, N 7. P. 1501.pdf
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9.
Инвентарный номер: нет.
   
   K 39


   
    Ketenaminals as 1,3-dinucleophiles in the synthesis of condensed 1,4-diazines and 1,2,4-triazines (Letter) [Electronic resource] / V. N. Charushin, S. G. Alexeev, O. N. Chupakhin, H. C. Van der Plas // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1989. - Vol. 38, № 2. - С. 438. - Bibliogr. : p. 438 (2 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
1,3-DINUCLEOPHILES -- KETENAMINALS

\\\\expert2\\nbo\\Russian Chemical Bulletin\\1989. V. 38, N 2. P. 438.pdf
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10.
Инвентарный номер: нет.
   


   
    2-Aminooxazoles as novel dienophiles in the inverse demand Diels–Alder reaction with 1,2,4-triazines / A. P. Krinochkin, G. Mallikarjuna Reddy, D. S. Kopchuk [et al.] // Mendeleev Communications. - 2021. - Vol. 31, № 4. - P542-544
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
1,2,4-TRIAZINES -- OXAZOL-2-AMINES -- DIELS–ALDER REACTION -- 2,2'-BIPYRIDIN-3-OLS
Аннотация: High temperature coupling of 6-aryl-5-cyano-3-(pyridin-2-yl)-1,2,4-triazines with 2-amino-4-aryloxazoles proceeds as the inverse demand Diels–Alder reaction between the oxazole moiety as dienophile and the 1,2,4-triazine moiety as diene to construct new 4,5-diaryl-6-cyano-3-hydroxypyridin-2-yl fragment. A reaction mechanism is proposed, and the structure of the key-product is proved by the X-ray diffraction analysis.

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