Search Results - "Lebedˈ, P. S."

Ethyl 5-amino-3-oxo-1,2-dihydro-1H-pyrazole-1-carboxylate in the selective synthesis of partially hydrogenated pyrazolo[3,4-b]pyridin-3-ones by Lebedˈ, P. S., Mozgovaya, N. G., Kos, P. O., Vovk, M. V.

“…Ethyl 5-amino-3-oxo-1,2-dihydro-1 H -pyrazole-1-carboxylate undergoes selective cyclocondensation with 1,3-dicarbonyl compounds or their synthetic equivalents…”
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Synthesis of new polyfunctional 5,6,7,8-tetrahydroimidazo-[1,5-c]pyrimidin-5-ones by the aza-Wittig reaction followed by intramolecular cyclization and 1,3-prototropic shift by Lebed’, P. S., Kos, P. O., Polovinko, V. V., Tolmachev, A. A., Vovk, M. V.

“…Ethyl 2-oxo-6-[(triphenyl-λ 5 -phosphanylidene)aminomethyl]-1,2,3,4-tetrahydropyrimidine-5-carboxylates reacted with organic isocyanates according to the…”
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Synthesis of 2-aryl-2,4,6-tris(trifluoromethyl)-1,2-dihydro-1,3,5-triazines by reaction of arylmagnesium bromides with trifluoroacetonitrile by Vovk, M. V., Bol’but, A. V., Lebed’, P. S., Mel’nichenko, N. V.

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Non-isocyanate synthesis of N-(1,3-Thiazol-2-yl)ureas by Vovk, M. V., Lebed’, P. S.

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Heterocyclization of functionalized heterocumulenes with C,N- and C,O-binucleophiles: IV. Reactions of 1-chloroalkylheterocumulenes and N-(1-chloroalkylidene)carbamates with 2-benzimidazolylacetonitriles and methyl 2-benzimidazolylacetates by Vovk, M. V., Lebed?, P. S., Pirozhenko, V. V., Tsymbal, I. F.

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Synthesis of 1-substituted 5-acetyl (ethoxycarbonyl)-2,3-dihydropyrazolo-[3,4-b]pyridin-3-ones by Lebed’, P. S., Mozgovaya, N. G., Manoilenko, O. V., Tolmachova, V. S., Vovk, M. V.

“…1-Substituted 5-aminopyrazol-3-ones react selectively with ethoxymethylidene β-dicarbonyl compounds (3-ethoxymethylidene-2,4-pentanedione, diethyl…”
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Heterocyclization of functionalized heterocumulenes with C,N-, C,O, and C,S-binucleophiles: IX. Reaction of 1-aryl-1-chloro-2,2,2-trifluoroethyl isocyanates with sulfanylacetic acid esters as a convenient synthetic route to 2-aryl-2-trifluoromethyl-4-oxo-1,3-thiazolidine-5-carboxylates by Vovk, M. V., Lebed’, P. S., Polovinko, V. V., Manoilenko, O. V.

“…1-Aryl-1-chloro-2,2,2-trifluoroethyl isocyanates reacted with methyl and ethyl sulfanylacetates to give the corresponding alkyl…”
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Unusual Cyclization of N-(1-Aryl-1-chloro-2,2,2-trifluoroethyl)-N'-(p-tolyl)-carbodiimides in the Presence of Triethylamine by Vovk, M. V., Lebed', P. S., Chernega, A. N., Pirozhenko, V. V.

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Synthesis and some transformations of 5-isoxazolylsulfonyl chlorides by Lebed, P. S., Tolmachov, A. O., Zubchuk, Yu. O., Boyko, O. M., Vovk, M. V.

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Heterocyclizations of Functionalized Heterocumulenes with C,N- and C,O-Dinucleophiles: II. Reaction of 1-Chloro- and 1,1-Dichloroalkyl Isocyanates and 1-Chloroalkylidenecarbamates with 2-Bensothiazolylacetonitrile, 2-Benzothiazolylacetates, and Bis(2-benzothiazolyl)methane by Vovk, M. V., Lebed', P. S., Sukach, V. A., Kornilov, M. Yu

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1,1-Dichloro-2,2,2-trihaloethyl Isocyanates and N-(1-Chloro-2,2,2-trihaloethylidene)urethanes in the Synthesis of 4-Trihalomethyl-2H-1,3-benzoxazin-2-ones by Vovk, M. V., Bol'but, A. V., Lebed', P. S., Boiko, V. I.

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Heterocyclization of Functionalized Heterocumulenes with C,N- and C,O-Binucleophiles. 1. Cyclocondensation of 1-Chloroalkylheterocumulenes and N-(1-Chloroalkylidene)urethanes with 2-Cyanomethylpyridine by Vovk, M. V., Lebed, P. S., Chernega, A. N., Pirozhenko, V. V., Boiko, V. I., Tsymbal, I. F.

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O-Acylation of 3-Methylpyrazol-5-ones with Acylisothiocyanates by Vovk, Mykhaylo V., Bol'but, Andrij V., Lebed', Pavlo S.

“…3-Methylpyrazol-5-ones 1 react by the O-acylation pattern with acylisothiocyanates 2 in the solvent mixture ethanol-dioxane in the presence of the equimolar…”
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