Výsledky vyhledávání - "V. A. Slavinskaya"

Autor: V. A. Slavinskaya, N. O. Saldabol, J. Popelis

Publikováno v: Chemistry of Heterocyclic Compounds. 37:1021-1024

Vilsmeier formylation of 2-(2-furyl)-substituted imidazo[1,2-a]pyridine and imidazo[1,2-a]pyrimidine, and also 6-(2-furyl)imidazo[2,1-b]thiazole with 1 mole of reagent occurs at the free position of the imidazole ring, while with an excess of the rea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::15809f21028549fa06ccbb14b84d6e1b
https://doi.org/10.1023/a:1012799920436

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Synthesis and conversions of 2-acetyl-5-methyl-4-nitrofuran. Isomerization and beckman rearrangement of the oxime

Autor: E. E. Liepin'sh, N. O. Saldabol, Yu. Yu. Popelis, V. A. Slavinskaya, I. Mazheika

Publikováno v: Chemistry of Heterocyclic Compounds. 35:1415-1422

2-Acetyl-5-methyl-4-nitrofuran and 3,5-dinitro-α-methylfuran were obtained by the reaction of 70% nitric acid with 2-acetyl-5-methylfuran, its oxime and semicarbazone in concentrated H2SO4. ω-Bromonitro ketone and a series of 5-methyl-4-nitro-2-fur

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::efd2bdb300d6c88ddd105339a9d3543d
https://doi.org/10.1007/bf02251814

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Hydrogenation of derivatives of 2-oxo-4-(2-thienyl)butenoic acid at palladium and nickel catalysts

Autor: I. V. Turovskis, V. A. Slavinskaya, E. Kh. Korchagova, Edmunds Lukevics, D. E. Sile, Yu. Balodis, G. F. Rozental, S. Kh. Grinberga, N. G. Panchenko

Publikováno v: Chemistry of Heterocyclic Compounds. 34:1127-1131

The hydrogenation of sodium and ethyl 2-oxo-4-(2-thienyl)butenoate at Raney nickel and palladium black was investigated. With Raney nickel the reaction products were the corresponding derivatives of 2-oxo-4-(2-thienyl)butyric acid and 2-hydroxy-4-(2-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c2ac81f576a88e6bdf78dd62f90e194f
https://doi.org/10.1007/bf02319489

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Hydrogenation of 4-(2-furyl)-2-oxobutenoic acid sodium salt on Raney nickel

Autor: E. Kh. Korchagova, N. G. Panchenko, M. Yu. Katkevich, I. U. Lipsbergs, V. A. Slavinskaya, D. E. Sile, Edmunds Lukevics

Publikováno v: Chemistry of Heterocyclic Compounds. 34:35-39

The hydrogenation of 4-(2-furyl)-2-oxobutenoic acid sodium salt on a nickel catalyst has been studied. Using Raney nickel catalyst, the corresponding salts of 4-(2-furyl)-2-oxobutanoic acid, 4-(2-furtyl)-2-hydroxybutanoic acid, and aliphatic hydrogen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5cabc18768310a6d5307731aa7c49c60
https://doi.org/10.1007/bf02290609

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Synthesis of several heteryldehydropeptides by the oxazolone method

Autor: I. U. Lipsbergs, E. Kh. Korchagova, M. Katkevich, V. A. Slavinskaya, I. V. Turovskii, D. E. Sile, E. Lukevits

Publikováno v: Chemistry of Heterocyclic Compounds. 31:202-205

(E)-N-Benzolydehydro-3-(3-pyridyl)-alanyltryptophan was synthesized in 89% yield by the reaction of 2-phenyl-4-(3-pyridylidene)-5(4H)-oxazolone with tryptophan. The reaction of 4-[1-(2-furyliden)ethyl]- and 4-(3-pyridyliden)2-phenyl-5(4H)-oxazolones

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::72bc699263df02812807706563b51a68
https://doi.org/10.1007/bf01169680

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Synthesis of?-substituted?-amino acids by the alkylation of 5-oxazolinone derivatives

Autor: D. E. Sile, M. Yu. Katkevich, E. Lukevits, E. Kh. Korchagova, V. A. Slavinskaya

Publikováno v: Chemistry of Heterocyclic Compounds. 30:724-728

Methods have been developed for the alkylation of 5-oxazolinone derivatives in DMF in the presence of K2CO3, KOH, or diisopropylethylamine and a phase transfer catalyst as well as for the preparation ofα-methyl-phenylalanine,α-methylalanine,α-meth

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a7e1669e879db9259fa04877a3684a34
https://doi.org/10.1007/bf01166316

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