Zobrazeno 1 - 10
of 164
pro vyhledávání: '"A. N. Esipenko"'
Autor:
O. I. Sizaya, V. N. Britsun, S. V. Gatsenko, V. N. Chelyabieva, O. L. Gumenyuk, A. N. Esipenko
Publikováno v:
Protection of Metals and Physical Chemistry of Surfaces. 46:71-74
Effect of the nature and position of substituents in [1,3]thiazino[3,2-a]benzimidazol-4-ones on their efficiency as corrosion inhibitors for steel 20 (HCl, pH 0) was studied.
Publikováno v:
Russian Journal of Organic Chemistry. 45:1834-1842
Reactions of ethyl 1-alkyl-5-benzoyl-6-methylsulfanyl-2-oxo-1,2-dihydropyridine-3-carboxylates with nitrogen-containing 1,4- and 1,5-binucleophiles (o-phenylenediamine, o-aminobenzenethiol, ethane-1,2-diamine, and propane-1,3-diamine) involved recycl
Publikováno v:
Chemistry of Heterocyclic Compounds. 45:445-453
For the first time the possibility has been shown of recyclizing 1-alkyl-5-benzoyl-3-ethoxycarbonyl-6-methylthio-1,2-dihydropyridin-2-ones into 1,6-annelated bicyclic derivatives of 3-alkylcarbamoyl-5-benzoylpyridin-2-one, which takes place on reacti
Publikováno v:
Chemistry of Heterocyclic Compounds. 44:1429-1459
Data from the last six years on the heterocyclization of thioamides containing an active methylene group are analyzed and classified.
Publikováno v:
Chemistry of Heterocyclic Compounds. 44:979-984
[3+3] Cyclocondensation of 5-benzoyl-3-ethoxycarbonyl-6-methylthio-1-R-1,2-dihydropyrid-2-ones with heterocyclic N,N-and N,C-1,3-dinucleophiles proceeds regioselectively to give a series of new tri-and tetracyclic heterosystems, viz. derivatives of 5
Publikováno v:
Chemistry of Heterocyclic Compounds. 44:876-881
The reaction of 5-benzoyl-3-ethoxycarbonyl-6-methylthio-1-R-1,2-dihydropyridin-2-ones with the nitrogen-containing 1,4-dinucleophiles o-phenylenediamine, o-aminothiophenol, and ethylenediamine, proceeds as a recyclization, the products of which are d
Synthesis and reactions of 1-R-3-benzoyl-5-ethoxycarbonyl-6-oxo-1,2,3,6-tetrahydropyridine-2-thiones
Publikováno v:
Chemistry of Heterocyclic Compounds. 43:1411-1419
Cycloacylation of N-R-3-oxo-3-phenylpropanethioamides by diethyl ethoxymethylenemalonate occurs selectively to form 1-R-3-benzoyl-5-ethoxycarbonyl-6-oxo-1,2,3,6-tetrahydropyridine-2-thiones which are convenient starting materials for the synthesis of
Publikováno v:
Protection of Metals. 43:259-263
[1,3]Thiazino[3,2-a]benzoimidazol-4-ones were found to be effective inhibitors of the acid corrosion of steel 20 in 1 M HCl and 1 M H2SO4(pH 0) and valuable polyfunctional additives that enhance the anticorrosion properties and stimulate the formatio
Publikováno v:
Russian Journal of Organic Chemistry. 43:103-107
N-Aryl-3-oxobutanethioamides react with 2-amino-1,3-thiazole (2-amino-1,3-benzothiazole) in acetic acid to give mixtures of 7-methyl-5H-[1,3]thiazolo[3,2-a]pyrimidine-5-thione (2-methyl-4H-pyrimido-[2,1-b][1,3]benzothiazole-4-thione) and 5-arylimino-
Publikováno v:
Russian Journal of Organic Chemistry. 41:108-113
3-Aryl-1,2,4-triazole-5-thiones react with dimethyl acetylenedicarboxylate and methyl 3-phenyl-propynoate to afford the corresponding 5-substituted 2-aryl-7H-[1,2,4]triazolo[3,2-b][1,3]thiazin-7-ones. Treatment of 2-aryl-2,3-dihydro-4H-[1,3]thiazino[