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 Найдено в других БД:Каталог книг и продолжающихся изданий (2)Публикации Чарушина В.Н. (27)
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Общее количество найденных документов : 89
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1.
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    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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2.
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    6-Polyfluoroalkylated 2-thiouracils in the synthesis of pyrimido[2,1-b][1,3,5]thiadiazines by the double Mannich reaction [Electronic resource] / O. G. Khudina, A. E. Ivanova, Ya. V. Burgart, V. I. Saloutin, M. A. Kravchenko // Journal of Fluorine Chemistry. - 2013. - Vol.147. - P31-35
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ALIPHATIC AND AROMATIC AMINES -- ETHYLENEDIAMINE -- FORMALDEHYDE
Аннотация: 6-Polyfluoroalkyl-2-thiouracils react with formaldehyde and primary amines in EtOH (MeCN) at 2-mercapto and 3-amino groups to yield pyrimido[2,1-b][1,3,5] thiadiazines via the multicomponent double Mannich reaction. The structure of 3-benzyl-8-nonafluorobutyl-3,4-dihydro-2H,6H-pyrimido[2,1-b][1,3,5] thiadiazin-6-one was studied by the X-ray diffraction analysis. The use of ethylenediamine in these reactions yields 3,3′-ethane-1,2-diyl- bis(pyrimido[2,1-b]thiadiazinone) as a result of the bis-double Mannich cyclocondensation. 8-Polyfluoroalkyl-pyrimido[2,1-b]thiadiazines exhibit weak tuberculostatic activity

\\\\Expert2\\NBO\\Journal of Fluorine Chemistry\\2013, v. 147, p.31.pdf
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3.
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   A 10


   
    A catalyst and additive-free three-component reaction of highly electrophilic azides with cyclic ketones and cycloaliphatic amines. Synthesis of novel N-heteroaryl amidines [Electronic resource] / I. Efimov, N. Beliaev, T. Beryozkina, P. A. Slepukhin, V. A. Bakulev // Tetrahedron Letters. - 2016. - Vol. 57, № 18. - С. 1949-1952
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
SULFONYL AMIDINES; -- KETENE N,X-ACETALS -- CYCLOADDITION REACTIONS
Аннотация: Highly electrophilic 5-azido-1-methyl-4-nitro-1H-imidazole and sulfonyl azides were demonstrated to react with alicyclic amines and cyclic ketones in the absence of any catalyst or additive to afford novel N-(4-nitroimidazol-5-yl)- or N-sulfonylamidines respectively. Based on single crystal X-ray analysis, a revision of the previously reported data of Gao and co-workers on the direction of the reaction of sulfonyl azides with endocyclic enamines was made. The reaction of 2,6-diazidopyridine with an enamine, 4-(cyclohex-1-en-l-yl)morpholine, proceeded with cyclization of the azide moiety onto the pyridine C=N bond to form an amidine bearing the tetrazolo[1,5-a]pyridine fragment.

\\\\expert2\\NBO\\Tetrahedron Letters\\2016, v. 57, p. 1949.pdf
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4.
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   A 10


   
    A new family of Chromophores based on 2-pyridines and oxazoles for the off-resonant optical kerr effect [Text] : доклад, тезисы доклада / O. N. Chupakhin, G. L. Rusinov, D. G. Beresnev, N. A. Itsikson, I. G. Ovchinnikova, O. V. Fedorova // XXth European Colloquium on Heterocyclic Chemistry, Stockholm,Sweden, 18-21 Aug. 2002 г. - Stockholm, 2002. - PG:1
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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5.
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   A 10


   
    A simple and convenient synthesis of 4-methyl-3-nitro-2-trihalomethyl-2H-chromenes from N-unsubstituted imines of 2-hydroxyacetophenones and trichloro(trifluoro)ethylidene nitromethanes [Text] / V. Yu. Korotaev, V. Ya. Sosnovskikh, I. B. Kutyashev, A. Yu. Barkov, E. G. Matochkina, M. I. Kodess // Tetrahedron. - 2008. - Vol. 64, № 22. - P5055-5060
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The reaction of N-unsubstituted imines of 2-hydroxyacetophenones with trichloro(trifluoro)ethylidene nitromethanes in the presence of DABCO proceeds via tandem oxa-Michael/aza-Henry additions (in dichloromethane) or aza-Michael addition (in benzene) to give 4-methyl-3-nitro-2-trichloro(trifluoro)methyl-2H-chromenes or 1,1,1-trichloro(trifluoro)-3-nitro-N-[1-(2-hydroxyaryl)ethylidene]propan-2-amines, respectively????

\\\\Expert2\\nbo\\Tetrahedron\\2008, v. 64, N22, p. 5050.pdf
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6.
Инвентарный номер: нет.
   
   A 19


   
    Acylactive kinetic resolution of racemic heterocyclic amines using amino acids derivatives [Text] : доклад, тезисы доклада / D. A. Gruzdev, G. L. Levit, E. N. Chulakov, L. Sh. Sadretdinova, T. V. Matveeva, E. A. Il"ichyova, V. P. Krasnov // Fifth International Conference on Organic Chemistry for young Scientists (InterYCOS-2009) "Universities Contribution in the Organic Chemistry Progress", devoted to the 175 th anniversary of D.I.Mendeleevs birthday and 80th anniversary of the Chemistry department of St. Petersburg State University foundation, Saint-Petersburg, 22-25 june 2009 : abstr. - СПб., 2009. - P45 (1-11). - Bibliogr. : p. 46 (9 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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7.
Инвентарный номер: нет.
   
   A 19


   
    Acylative kinetic resolution of racemic amines using N-phthaloyl-(S)-amino acyl chlorides [Text] / D. A. Gruzdev, G. L. Levit, V. P. Krasnov, E. N. Chulakov, L. Sh. Sadretdinova, A. N. Grishakov, M. A. Ezhikova, M. I. Kodess, V. N. Charushin // Tetrahedron: Asymmetry . - 2010. - Vol. 21, № 8. - P936-942
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A comparative study of the kinetic resolution of racemic 2-methyl-1,2,3,4-tetrahydroquinoline and 2,3-dihydro-3-methyl-4H-1,4-benzoxazine using N-phthaloyl-(S)-amino acyl chlorides as chiral acylating agents is described. Temperature and solvent effects on the stereochemical features have been examined. It has been found that N-phthaloyl-(S)-phenylalanyl and N-phthaloyl-(S)-2-phenylglycyl chlorides bearing aromatic substituents close to the stereogenic centre are more stereoselective acylating agents than N-phthaloyl-(S)-alanyl chloride. For the preparative kinetic resolution of racemic amines N-phthaloyl-(S)-phenylalanyl chloride proved to be the most appropriate chiral acylating agent

\\\\Expert2\\nbo\\Tetrahedron Asymmetry\\2010, v. 21, p.936.pdf
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8.
Инвентарный номер: нет.
   
   A 19


   
    Acylative kinetic resolution of racemic amines with N-protected (S)-amino acyl chlorides / D. A. Gruzdev, G. L. Levit, V. P. Krasnov, V. N. Charushin // 18th European Symposium on Organic Chemistry ESOC-2013, Marseille, France, 7-12 July 2013 : book of abstracts. - Marseille (France) , 2013. - 244 (P1-184)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
RACEMIC AMINES -- CHLORIDES -- ACYLATIVE KINETIC RESOLUTION

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9.
Инвентарный номер: нет.
   
   A 19


   
    Acylative kinetic resolution of racemic amines with profens and amino acids derivatives / V. P. Krasnov, G. L. Levit, D. N. Kozhevnikov, M. I. Kodess, D. A. Gruzdev, E. N. Chulakov, V. N. Charushin // International Congress on Organic Chemistry, dedicated to the 150-th anniversary of the Butlerov's Theory of Chemical Structure of Organic Compounds, Kazan, September 18-23, 2001 : book of abstr. - Kazan, 2011. - С. 85
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
KINETIC RESOLUTION -- S-AMINES -- RACEMIC AMINES

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10.
Инвентарный номер: нет.
   
   A 19


   
    Acylative kinetic resolution of racemic heterocyclic amines with (R)-2-phenoxypropionyl chloride / S. A. Vakarov [и др.] // Tetrahedron: Asymmetry . - 2016. - Vol. 27, № 24. - С. 1231-1237. - Bibliogr. : p. 1236-1237 (15 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
HETEROCYCLIC AMINES -- BENZOXAZINES -- 2-METHYLINDOLINE -- KINETIC RESOLUTION
Аннотация: The acylative kinetic resolution of racemic heterocyclic amines such as 3,4-dihydro-3-methyl-2H-[1,4]benzoxazines, 3,4-dihydro-3-methyl-2H-[1,4]benzothiazine, 2-methyl-1,2,3,4-tetrahydro-quinolines and 2-methylindoline with enantiopure (R)-2-phenoxypropionyl chloride has been studied. It has been found that acylation of 3,4-dihydro-3-methyl-2H-[1,4]benzothiazine proceeds with the best stereoselectively when compared with other racemic amines. An efficient method for the preparation of (S)-3,4-dihydro-3-methyl-2H-[1,4]benzothiazine (99.4% ee) via a kinetic resolution protocol was developed. The possibility of recycling (R)-2-phenoxypropionic acid has been demonstrated.

\\\\expert2\\NBO\\Tetrahedron Asymmetry\\2016, v. 27, p.1231.pdf
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