Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Greta Utecht-Jarzyńska"'
Autor:
Greta Utecht-Jarzyńska, Karolina Nagła, Grzegorz Mlostoń, Heinz Heimgartner, Marcin Palusiak, Marcin Jasiński
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 17, Iss 1, Pp 1509-1517 (2021)
In-situ-generated N-aryl nitrile imines derived from trifluoroacetonitrile efficiently react with polycyclic 1,4-quinones, yielding fused pyrazole derivatives as the exclusive products. The reactions proceed via the initially formed [3 + 2]-cycloaddu
Externí odkaz:
https://doaj.org/article/d6009c320dec4dfcb6dace9414d92297
Autor:
Anna Kowalczyk, Kamil Świątek, Małgorzata Celeda, Greta Utecht-Jarzyńska, Agata Jaskulska, Katarzyna Gach-Janczak, Marcin Jasiński
Publikováno v:
Materials, Vol 16, Iss 2, p 856 (2023)
The synthesis of two series of monocyclic and bicyclic trifluoromethylated 4,5-dihydro-1,2,4-triazin-6(1H)-one derivatives based on (3+3)-annulation of methyl esters derived from natural α-amino acids with in situ generated trifluoroacetonitrile imi
Externí odkaz:
https://doaj.org/article/6c2b3c1b65204f5d9c683e4039f95bd2
Publikováno v:
Molecules, Vol 27, Iss 23, p 8446 (2022)
A solvent-free two-step synthesis of polyfunctionalized pyrazoles under ball-milling mechanochemical conditions was developed. The protocol comprises (3 + 2)-cycloaddition of in situ generated nitrile imines and chalcones, followed by oxidation of th
Externí odkaz:
https://doaj.org/article/8ae070dd42a74a02be99c94d982e0b10
Publikováno v:
Organic Letters. 24:2499-2503
A general approach for preparation of two types of polyfunctionalized 3-trifluoromethylpyrazoles is reported. The protocol comprises (3 + 2)-cycloaddition of the
Publikováno v:
European Journal of Organic Chemistry. 2020:6740-6748
To gain a deeper understanding of the formation of the synthetically important 3,6‐dihydro‐2H‐1,2‐oxazines, the 6‐endo‐trig cyclization of allenyl‐substituted hydroxylamines was experimentally investigated in detail employing a model co
Publikováno v:
Comprehensive Heterocyclic Chemistry IV ISBN: 9780128186565
Comprehensive Heterocyclic Chemistry IV
Comprehensive Heterocyclic Chemistry IV
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f21395afe133073b358e68314fe9c33
https://doi.org/10.1016/b978-0-12-818655-8.00078-0
https://doi.org/10.1016/b978-0-12-818655-8.00078-0
Publikováno v:
Molecules; Volume 27; Issue 23; Pages: 8446
A solvent-free two-step synthesis of polyfunctionalized pyrazoles under ball-milling mechanochemical conditions was developed. The protocol comprises (3 + 2)-cycloaddition of in situ generated nitrile imines and chalcones, followed by oxidation of th
Autor:
Grzegorz Mlostoń, Aleksandra Michalak, Marcin Jasiński, Justyna Banaś, Greta Utecht-Jarzyńska
Publikováno v:
Journal of Fluorine Chemistry. :8-14
The in situ generated highly electrophilic nitrile imines derived from trifluoroacetonitrile are efficiently trapped by monomeric mercaptoacetaldehyde at room temperature in THF solution. The initially formed 1:1 adducts undergo spontaneous cyclizati
Autor:
Eduard B. Rusanov, Marcin Jasiński, Sergiy S. Mykhaylychenko, Grzegorz Mlostoń, Yuriy G. Shermolovich, Greta Utecht-Jarzyńska
Publikováno v:
Journal of Fluorine Chemistry. 242:109702
Fluorine-rich 1,3,4-thiadiazole derivatives were prepared by 1,3-dipolar cycloaddition of the in situ generated N-aryl-trifluoroacetonitrile imines with tertiary polyfluoroalkanethioamides (N,N-dialkyl thioamides). Reactions were performed under mild
Publikováno v:
Journal of Fluorine Chemistry. 241:109691
In situ generated arynes react with nitrile imines derived from trifluoroacetonitrile at 0 °C in THF solutions yielding 3-trifluoromethyl-1H-indazole derivatives as the only intermolecular products. The reaction corresponds the expected (3 + 2)-cycl