Zobrazeno 1 - 10
of 104
pro vyhledávání: '"J. Stradins"'
Autor:
Edgars Liepinsh, J. Stradins, S. Stupnikova, Baiba Turovska, Sergey Belyakov, S. Grinberga, I. Goba, I. Turovskis
Publikováno v:
Chemistry of Heterocyclic Compounds. 44:1483-1490
The electrochemical oxidation of 4-monoalkyl-substituted 1,4-dihydropyridines has been studied in an aprotic medium and in the presence of pyridine. In an aprotic medium the products of oxidation are both 4-alkyl-substituted and 4-unsubstituted pyrid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f64da760aae8d432916d17a158e30ba
https://doi.org/10.1007/s10593-009-0211-0
https://doi.org/10.1007/s10593-009-0211-0
Autor:
J. Stradins
Publikováno v:
Chemistry of Heterocyclic Compounds. 43:127-142
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f07bbd2c096bc2934dd76832815e2df4
https://doi.org/10.1007/s10593-007-0023-z
https://doi.org/10.1007/s10593-007-0023-z
Publikováno v:
Chemistry of Heterocyclic Compounds. 43:175-186
It has been shown that chemical oxidation of the methyl ester of 3,4,5-trimethoxycarbonyl-1,2,6-trimethyl-1,4-dihydropyridine to the pyridinium salt, requiring forcing experimental conditions, may be replaced by electrochemical oxidation. On electroc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c013a038df5a10c9041cfe190e7614e6
https://doi.org/10.1007/s10593-007-0029-6
https://doi.org/10.1007/s10593-007-0029-6
Autor:
J. Stradins, M. Griga, L. Sile, Aivars Krauze, Larisa Baumane, Sergey Belyakov, L. Chernova, Gunars Duburs
Publikováno v:
Chemistry of Heterocyclic Compounds. 41:362-373
We have obtained 4-aryl-2-carbamoylmethylthio-5-ethoxycarbonyl-1,4-dihydropyridine-3-carboxylic acid nitriles by S-alkylation of the corresponding 2-thioxo-1,2,3,4-tetrahydropyridine-3-carboxylic acid nitrile by iodoacetamide or one-pot multicomponen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::499cd719cc518c2425ac09ae31c58a02
https://doi.org/10.1007/s10593-005-0156-x
https://doi.org/10.1007/s10593-005-0156-x
Autor:
J. Stradins
Publikováno v:
Chemistry of Heterocyclic Compounds. 41:16-23
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e72d8f11e82e123e892ba17ae62bfaf
https://doi.org/10.1007/s10593-005-0109-4
https://doi.org/10.1007/s10593-005-0109-4
Autor:
J. Stradins
Publikováno v:
Chemistry of Heterocyclic Compounds. 41:11-15
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7966327d772c384a332aaf78a498a6c
https://doi.org/10.1007/s10593-005-0108-5
https://doi.org/10.1007/s10593-005-0108-5
Publikováno v:
Chemistry of Heterocyclic Compounds. 40:1235-1242
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3aa145ad2ad757b0ba8cdd2f534ebcec
https://doi.org/10.1023/b:cohc.0000048306.08560.c9
https://doi.org/10.1023/b:cohc.0000048306.08560.c9
Publikováno v:
Chemistry of Heterocyclic Compounds. 40:753-758
A study was carried out on the electrochemical oxidation of 1,4-dihydropyridines, found as substituents in pyridinium salts, which are strong electron acceptors. The potentials for their oxidation in acetonitrile were determined. NMR spectroscopy was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6108992e54f7f903ee8d4eef890ef1fe
https://doi.org/10.1023/b:cohc.0000040771.98660.f0
https://doi.org/10.1023/b:cohc.0000040771.98660.f0
Publikováno v:
Chemistry of Heterocyclic Compounds. 39:1600-1607
It was established that 9b-substituted 5,9b-dihydroindenopyridines are formed in addition to the reduction products on preparative electrochemical reduction of 5-oxoindeno[1,2-b]pyridinium perchlorates at a mercury electrode in acetonitrile in the pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e09fa6f91fc8e281a0d5c5ab8a683c52
https://doi.org/10.1023/b:cohc.0000018337.96922.7d
https://doi.org/10.1023/b:cohc.0000018337.96922.7d
Publikováno v:
Chemistry of Heterocyclic Compounds. 39:1591-1599
Nitriles of 4-aryl-2-carbamoylmethylthio-5-ethoxycarbonyl-6-hydroxy-1,4,5,6-tetrahydropyridine-3-carboxylic acids were obtained by the alkylation of 1,4,5,6-tetrahydropyridine-2-thiolate with iodoacetamide or by a three-component synthesis by condens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe0775428d5b8e6909d115507535ebb4
https://doi.org/10.1023/b:cohc.0000018336.52691.a7
https://doi.org/10.1023/b:cohc.0000018336.52691.a7