Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Levente Pusztay"'
Publikováno v:
Journal of Heterocyclic Chemistry. 26:1755-1769
Ethyl 4-substituted 2-methyl-5-oxo-5,6-dihydro-1,6-naphthyridine-3-carboxylates 3a-h were synthetized in a one-step reaction from diethyl 2,6-diraethylpyridine-3,5-dicarboxylates 1a-h by aminomethinylation with 1,3,5-triazine (2). The 6-substitued de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5de3212331087239f74c7bcffd956b2
https://doi.org/10.1002/jhet.5570260644
https://doi.org/10.1002/jhet.5570260644
Publikováno v:
The Analyst. 117:371-373
During the infrared spectrometric investigation of a considerable number of 1,3-dicarbonyltetrahydropyridopyrimidine derivatives, frequency coupling of v(CO), O-cis, O-trans conformations and polymorphism were observed. It is generally accepted that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2852e244c2480cdffc9a06d2a7a68392
https://doi.org/10.1039/an9921700371
https://doi.org/10.1039/an9921700371
Publikováno v:
ChemInform. 21
Ethyl 4-substituted 2-methyl-5-oxo-5,6-dihydro-1,6-naphthyridine-3-carboxylates 3a-h were synthetized in a one-step reaction from diethyl 2,6-diraethylpyridine-3,5-dicarboxylates 1a-h by aminomethinylation with 1,3,5-triazine (2). The 6-substitued de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc6447334bc9ae55c57250b69937b829
https://doi.org/10.1002/chin.199022181
https://doi.org/10.1002/chin.199022181
Autor:
Levente Pusztay, István Hermecz, Miklós Hanusz, Benjamin Podányi, Miklós Fehér, Kálmán Simon, Zsolt Böcskei
Publikováno v:
HETEROCYCLES. 45:2175
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8539ba8ed7eb50a5adb47cce8e11a667
https://doi.org/10.3987/com-97-7919
https://doi.org/10.3987/com-97-7919
Publikováno v:
Journal of Heterocyclic Chemistry. 26:1061-1068
The structures of the title compounds, bearing five-, six-, seven-, or eight-membered rings, have been investigated by u.v. and 1H n.m.r. spectroscopy. In the 4-oxo derivatives the enol–enamine–imine tautomerism depends greatly on the ring size,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddfb000e8b17b98a8be316c530ba8b11
https://doi.org/10.1002/jhet.5570260428
https://doi.org/10.1002/jhet.5570260428
Autor:
Maria Balogh, Gábor Horváth, Kálmán Simon, Levente Pusztay, Zoltán Mészáros, István Hermecz, Péter Dvortsák
Publikováno v:
Journal of Heterocyclic Chemistry. 17:359-368
Ethyl 5-substituted-4-oxo-1,4-dihydro-3-pyridinecarboxylates were synthetized by reacting 1,3,5-triazine with 4-substituted ethyl acetoacetate derivatives in ethanol, in the presence of sodium ethoxide. The l-alkyl-5-substituted-4-oxo-1,4-dihydro-3-p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e924b44ef6d369723c9a0c0881d22403
https://doi.org/10.1002/jhet.5570170229
https://doi.org/10.1002/jhet.5570170229
Publikováno v:
Journal of Heterocyclic Chemistry. 17:175-179
1,4-Disubstituted-semicarbazide and thiosemicarbazide derivatives were synthetized from 5-substituted-4-oxo-1,4-dihydro-3-pyridinecarbohydrazides and cyclized to 3-mercapto-4H-1,2,4-triazoles. The obtained compounds could be S-methylated with methyl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8376af3444f037559ac7e43528235fad
https://doi.org/10.1002/jhet.5570170134
https://doi.org/10.1002/jhet.5570170134
Autor:
Osman Hassan Abdirizak, Levente Pusztay, Marianna Pongor-Csákvári, László Czakó, Árpád Kiss, István Hermecz, Agnes Horvath, Gábor Horváth
Publikováno v:
Journal of Heterocyclic Chemistry. 22:481-489
The characteristic features of ir and uv spectra of 43 4H-pyrido[1,2-a]pyrimidin-4-one derivatives with electron donor or acceptor groups in position 3, and positions 6, 7, 8, or 9, respectively, have been systematically studied. On the basis of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4e3aa79f1a68e42ad45a1b22696ea7b
https://doi.org/10.1002/jhet.5570220255
https://doi.org/10.1002/jhet.5570220255