Zobrazeno 1 - 10
of 99
pro vyhledávání: '"N. D. Obushak"'
Publikováno v:
Chemistry of Heterocyclic Compounds. 50:1748-1755
A convenient method for the synthesis of thieno[3,2-c]pyridinones was developed. A number of thiophene derivatives was prepared, and the possibility of using thiophene desamino derivatives for the design of potentially biologically active molecules w
Autor:
N. D. Obushak, A. O. Neshchadin, Roman Lytvyn, P. I. Yagodinets, N. O. Feilo, O. V. Elenich, O. V. Skripskaya
Publikováno v:
Russian Journal of Organic Chemistry. 49:1655-1660
3-(4-Acetylphenyl)-2H-chromen-2-one was obtained from 4-acetylphenyldiazonium chloride in the conditions of Meerwein reaction. Reactions of 3-[4-(2-bromoacetyl)phenyl]-2H-chromen-2-one with pyridine, 4-methylpyridine, quinoline, benzo[f]quinoline, an
Publikováno v:
Russian Journal of Organic Chemistry. 48:519-522
A simple and convenient procedure was proposed for the synthesis of 4-aryl-3-bromobutan-2-ones from methyl vinyl ketone and arenediazonium bromides under Meerwein reaction conditions.
Publikováno v:
Russian Journal of Organic Chemistry. 46:1550-1557
Bromination of ethyl 1-aryl-4-acetyl-5-methyl-1H-pyrazole-3-carboxylates gave ethyl 1-aryl-4-(bromoacetyl)-5-methyl-1H-pyrazol-3-carboxylates which were used to alkylate benzenethiol and heterocyclic thiones at the sulfur atom. Reactions of the resul
Publikováno v:
Chemistry of Heterocyclic Compounds. 46:495-499
3-Aryl-2-chloropropanal was obtained by the reaction of arenediazonium chlorides with acrolein in the presence of copper(II) chloride. N-Aryl(2-pyridyl)-5-(R-benzyl)-1,3-thiazole-2-amines were formed in high yield by the reaction of these aldehydes w
Publikováno v:
Russian Journal of Organic Chemistry. 46:894-897
Reactions of methyl 3-cyclopropyl-3-oxopropanoate with chloroacetone and ammonia, benzaldehyde and ammonia, and benzoquinone gave, respectively, methyl 2-cyclopropyl-5-methyl-1H-pyrrole-3-carboxylate, dimethyl 2,6-dicyclopropyl-4-phenyl-1,4-dihydropy
Publikováno v:
Chemistry of Heterocyclic Compounds. 46:50-55
The reaction of 2-acetylthiophene with acetylthiophene with arenediazonium chlorides in the presence of cupric chloride as catalyst gives 2-acetyl-5-arylthiophenes. These products react with 5-chloro- and 5-bromoisatins to give 6-chloro- and 6-bromo-
Publikováno v:
Russian Journal of Organic Chemistry. 46:556-560
Diazotization of 1-(aminophenyl)-1H-tetrazoles and subsequent treatment of the diazonium salts with sodium azide gave 1-(azidophenyl)-1H-tetrazoles which were brought into cyclization with ethyl acetoacetate and cyanoacetanilide to obtain 1,2,3-triaz
Publikováno v:
Russian Journal of General Chemistry. 80:836-841
Alkylation of 5-aryltetrazoles with N-arylchloroacetamides commonly proceeds regioselectively at 2 position of the tetrazole ring. The ratio of 1,5- and 2,5-regioisomers depends on the nature of a substituents in the benzene ring of the N-arylchloroa
Publikováno v:
Russian Journal of Organic Chemistry. 46:417-421
2-, 3-, and 4-[5-(1-Aryl-5-R-1H-1,2,3-triazol-4-yl)-1,3,4-oxadiazol-2-yl]pyridines were synthesized from the corresponding 1-aryl-5-R-1H-1,2,3-triazole-4-carbonyl chlorides and 2-, 3-, and 4-(1H-tetrazol-5-yl)-pyridines.