Výsledky vyhledávání - "T. G. Koksharova"

Some nucleophilic substitution reactions of s-triazolo[1,5-c]pyrimidines

Autor: N. V. Volkova, T. G. Koksharova, L. N. Dianova

Publikováno v: Chemistry of Heterocyclic Compounds. 28:321-323

Nucleophilic substitution of 5-methylthio- and 5-cyanomethylthio-7-amino-s-triazolo[1,5-c]pyrimidines has been carried out using sodium hydroxide, ammonia, hydrazine hydrate, and four amines. The cyanomethyl group is particularly reactive under these

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eba6a7d140de4e93e93de0bcbb9752f7
https://doi.org/10.1007/bf00529378

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Synthesis of the ethyl ester of the mononitrile of malonic acid by the catalytic carbonylation of benzenesulfonyloxyacetonitrile

Autor: A. R. Tumanova, N. V. Volkova, A. L. Lapidus, S. D. Pirozhkov, V. S. Mokrushin, Vasiliy A. Bakulev, T. G. Koksharova

Publikováno v: Bulletin of the Russian Academy of Sciences Division of Chemical Science. 41:178-180

A new method has been developed for the synthesis of the ethyl ester of the mononitrile of malonic acid by the carbonylation of benzenesulfonyloxyacetonitrile in absolute ethanol in the presence of cobalt carbonyl. The yield of the desired product wa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::131119c31e19a331599554aaa9671651
https://doi.org/10.1007/bf00863942

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Acylation of 1-oxo-4-hydroxypyridazino[4,5-b]quinoxaline

Autor: T. G. Koksharova, V. N. Konyukhov, Z. V. Pushkareva, L. N. Dianova, N. S. Utyuganova

Publikováno v: Chemistry of Heterocyclic Compounds. 13:330-333

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d386847806bf475ebb54d7efa8ef5152
https://doi.org/10.1007/bf00470322

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Aminonitrile rearrangement of s-triazolo[1,5-c]pyrimidines upon reaction with aryl (alkyl) halides

Autor: N. V. Volkova, T. G. Koksharova, V. N. Konyukhov, L. N. Dianova, Vasiliy A. Bakulev, O. S. Anisimova

Publikováno v: Chemistry of Heterocyclic Compounds. 21:355-358

Aminonitrile cleavage of the cyclic system was observed in the reaction of s-triazolo[1,5-c]pyrimidine derivatives with aryl (alkyl) halides in an alkaline medium or in dimethylfonnamide. It is shown that this transformation proceeds through the form

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7c9284f787296bc11c88df934e9b6eae
https://doi.org/10.1007/bf00506680

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Some properties of 1-oxo-4-hydroxypyridazino[4,5-b]quinoxaline

Autor: N. S. Utyuganova, V. N. Konyukhov, Z. V. Pushkareva, L. N. Dianova, T. G. Koksharova

Publikováno v: Chemistry of Heterocyclic Compounds. 13:326-329

The dissociation constants of 1-oxo-4-hydroxypyridazino[4,5-b]quinoxaline were measured by potentiometric titration. It is shown that this compound is a dibasic acid. Its reaction with organic bases, acids, alkalis, and oxidizing agents was studied.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::21fed03550c5d3a189e6acad854fde19
https://doi.org/10.1007/bf00470321

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