Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Nazar M. Tsizorik"'
Autor:
Maxim А. Nechayev, Nazar M. Tsizorik, Yevhenii V. Hrynyshyn, A. V. Bol’but, M. V. Vovk, Anna R. Musiychuk
Publikováno v:
Chemistry of Heterocyclic Compounds. 56:1554-1559
Methylpyrazolo[1,5-a]pyrazine-4-carboxylates were synthesized by palladium-catalyzed carbonylation of 4-chloropyrazolo[1,5-a]-pyrazines at elevated pressure and converted via nitrile intermediates to the corresponding amidoximes and amidines. Cycloco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06c30df14a02b0956dc06dc99bf23a01
https://doi.org/10.1007/s10593-020-02849-4
https://doi.org/10.1007/s10593-020-02849-4
Publikováno v:
Chemistry of Heterocyclic Compounds. 55:1070-1074
4-Bromopyrazolo[1,5-a]pyrazines react with aryl(hetaryl)boronic acids in the presence of catalytic amounts of Pd(dppf)Cl2·CH2Cl2 and an excess of Cs2CO3 in the MeCN–H2O, 9:1 solvent system with the formation of 4-aryl(hetaryl)pyrazolo[1,5-a]pyrazi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42d3b3eec83f4ca948fb958fc0357a1e
https://doi.org/10.1007/s10593-019-02579-2
https://doi.org/10.1007/s10593-019-02579-2
Publikováno v:
Chemistry of Heterocyclic Compounds. 55:893-896
A reaction of 4-chloropyrazolo[1,5-a]pyrazines with tert-butyl cyanoacetate proceeded via the formation of tert-butyl cyano(pyrazolo- [1,5-a]pyrazin-4(5H)-ylidene)ethanoates as intermediates and led to pyrazolo[1,5-a]pyrazin-4-ylacetonitriles, which
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c64aa37b0d0a02fd31483193d61b7519
https://doi.org/10.1007/s10593-019-02554-x
https://doi.org/10.1007/s10593-019-02554-x
Publikováno v:
Chemistry of Heterocyclic Compounds. 54:1075-1078
4-Chloropyrazolo[1,5-a]pyrazines react with ethyl isocyanoacetate to form ethyl imidazo[1,5-a]pyrazolo[5,1-c]pyrazine-1-carboxylates, hydrolysis of which yields the corresponding acids and reduction gives alcohols oxidized by the action of the Dess
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a442a7e811dd902709204a364f384c89
https://doi.org/10.1007/s10593-018-2395-7
https://doi.org/10.1007/s10593-018-2395-7
Autor:
Yevhenii V. Hrynyshyn, M. V. Vovk, Nazar M. Tsizorik, Anna R. Musiychuk, Nadezhda V. Panasenko, A. V. Bol’but
Publikováno v:
Chemistry of Heterocyclic Compounds. 54:710-716
4-Hydrazinylpyrazolo[1,5-а]pyrazines were obtained by reactions of 4-chloropyrazolo[1,5-а]pyrazines with hydrazine hydrate and further combined with compounds having one reactive site (triethyl orthoformate, acetic anhydride, ethyl chloroformate, p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b41af61263735a08939986d1c1605f10
https://doi.org/10.1007/s10593-018-2337-4
https://doi.org/10.1007/s10593-018-2337-4
Publikováno v:
Chemistry of Heterocyclic Compounds. 53:1242-1247
4-Chloropyrazolo[1,5-а]pyrazines reacted with anthranilic acids forming 8Н-pyrazolo[5',1':3,4]pyrazino[2,1-b]quinazolin-8-ones representing a new heterocyclic system.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5da6e8de5320be731e2c4c7fd42f0b88
https://doi.org/10.1007/s10593-018-2196-z
https://doi.org/10.1007/s10593-018-2196-z