Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Katarína Špirková"'
Publikováno v:
ARKIVOC, Vol 2005, Iss 5, Pp 96-102 (2005)
Externí odkaz:
https://doaj.org/article/a950617feb154e6cbe06016e606b7c64
Publikováno v:
ARKIVOC, Vol 2005, Iss 5, Pp 96-102 (2005)
Scopus-Elsevier
Scopus-Elsevier
By modification of the known literature procedures, the key intermediate product – Nphenyl(phenylimino)methylchloromethanimidoyl chloride 3 was prepared. Nucleophilic substitution reactions of the prepared imidoyl chloride with various secondary am
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::07c51dbd3f4bb664711f483b2fb7941f
https://doi.org/10.3998/ark.5550190.0006.509
https://doi.org/10.3998/ark.5550190.0006.509
Autor:
Štefan Stankovský, Katarína Špirková
Publikováno v:
Collection of Czechoslovak Chemical Communications. 61:957-961
Preparation of some substituted 2H-imidazo[1,2-c]quinazolin-3-ones (2a-2f) and 2,3-dihydropyrimido[1,2-c]quinazolin-4-ones (3a-3c) by reaction of corresponding 3H-quinazoline-4-thiones (1a-1d) with amino acid esters is described. IR, 1H NMR and 13C N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02463bb144ee32890a782290adfc7996
https://doi.org/10.1135/cccc19960957
https://doi.org/10.1135/cccc19960957
Synthesis of Some Derivatives of 8-Aminomethyl- and 8-Azolylmethyl-2-phenyl-3H-quinazoline-4-thiones
Autor:
Štefan Stankovský, Katarína Špirková
Publikováno v:
Collection of Czechoslovak Chemical Communications. 60:705-708
Alkylation of cyclic amines and imides by 8-chloromethyl-2-phenyl-3H-quinazoline-4-thione, prepared by intramolecular cyclization of N-(2-chloromethylphenyl)benzimidoyl isothiocyanate, afforded ten N,N-disubstituted 8-aminomethyl-2-phenyl-3H-quinazol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3de15310c88516ee500c20014e7b88bb
https://doi.org/10.1135/cccc19950705
https://doi.org/10.1135/cccc19950705
Publikováno v:
Folia Microbiologica. 39:471-474
Eight 4-quinazolylthiosemicarbazides and nine of their structural analogues have been tested for antibacterial effects and for structure activity relationships. 9-Chloro-5-morpholino-1,2,4-triazolo[4,3-c]quinazoline-3-thione has demonstrated the high
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc57eac328a45c97f4048cf2b6acb7c2
https://doi.org/10.1007/bf02814064
https://doi.org/10.1007/bf02814064
Publikováno v:
Collection of Czechoslovak Chemical Communications. 59:243-246
Several biological activities have been attributed to the quinazoline and triazole derivatives. Combining two known active heterocyclic moieties, we prepared a series of 3-aryl-5-morpholino-9-chloro-s-triazolo[4,3-c]quinazolines by an oxidative cycli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06c816d3d471f3b78ee6af490b966cd1
https://doi.org/10.1135/cccc19940243
https://doi.org/10.1135/cccc19940243
Publikováno v:
Collection of Czechoslovak Chemical Communications. 59:1463-1466
The azole rings combined with carbonyl group via methylene bridge or with imidoyl group directly are frequent structural units of organic compounds possessing phytoefectorical and mainly pesticidal activities. In this connection we realized to prepar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84ae1c9a3361e44836af8ce63927ff62
https://doi.org/10.1135/cccc19941463
https://doi.org/10.1135/cccc19941463
Publikováno v:
Collection of Czechoslovak Chemical Communications. 59:222-226
The paper describes the cyclization reactions of substituted 1-(4'-quinazolyl)-4-phenylthiosemicarbazides (Ia - Ie). The thermal intramolecular cyclization gives 2H-1,2,4-triazolo[4,3-c]quinazoline-3-thiones (IIa - IId). Heating of I with HgO gives 3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad76e0fb5f2806348cf0fddce48cdbff
https://doi.org/10.1135/cccc19940222
https://doi.org/10.1135/cccc19940222
Publikováno v:
Collection of Czechoslovak Chemical Communications. 58:2211-2214
A series of substituted derivatives of triazolyl acetanilides (IIa - IIn) by reaction of 1-chloroacetanilides with 1,2,4-triazole was prepared. The basic IR and 1H NMR spectral data of final products are presented. Investigation of herbicidal, fungic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e27c448fd8578aa6952a73f6bd9ac18f
https://doi.org/10.1135/cccc19932211
https://doi.org/10.1135/cccc19932211
Autor:
Katarína Špirková, Štefan Stankovský
Publikováno v:
Collection of Czechoslovak Chemical Communications. 57:2203-2207
Preparation of 1-(5-substituted-2-furyl)-2-phenylsulfonyl-2-furoyl ethylenes (IIa-IId) using the Lehnert modification of Knoevenagel condensation, as well as substitution nucleophilic reactions of the 1-(5-bromo-2-furoyl)-2-phenylsulfonyl-2-furoyl de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e035627e7e476a52b4cd0b4d96dd6203
https://doi.org/10.1135/cccc19922203
https://doi.org/10.1135/cccc19922203