Výsledky vyhledávání - "Yu. D. Churkin"

Nitro derivatives of the thiophene series. 2. Nitration of thienyl-substituted unsaturated methyl ketones

Autor: Yu. D. Churkin, K. Ya. Burshtein, A. S. Shashkov, L. V. Panfilova

Publikováno v: Chemistry of Heterocyclic Compounds. 17:232-235

The nitration of 4-(5-R-2-thienyl)-3-buten-2-ones with nitric acid in acetic anhydride is accompanied by the formation of a mixture of nitro isomers, whereas nitration with nitric acid and copper and aluminum nitrates in carbon tetrachloride, dichlor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2bc48ccb26a456e96b3aad6097616b4c
https://doi.org/10.1007/bf00505983

Zobrazit plný text záznamu

Primary selection of viral inhibitors in tissue culture

Autor: L. M. Zorin, A. N. Krasovskii, S. V. Zhavrid, O. M. Radul, G. S. Gritsenko, G. I. Zhungietu, Yu. D. Churkin, N. P. Gril, V. M. Plakunov, R. S. Belen'kaya, M. N. Shashikhina, T. I. Zileeva, G. E. Muntyan, A. B. Roman, M. A. Rekhter, A. E. Lipkin, V. I. Votyakov

Publikováno v: Pharmaceutical Chemistry Journal. 12:1423-1427

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3423dd05423b62dedf60b1c2e62e512d
https://doi.org/10.1007/bf00772637

Zobrazit plný text záznamu

Nitro derivatives of the thiophene series. 3. Study of the nitration of thiophene ?,?-unsaturated ketones in the presence of protic and aprotic acids

Autor: K. Ya. Burshtein, Yu. D. Churkin, A. S. Shashkov, L. V. Panfilova

Publikováno v: Chemistry of Heterocyclic Compounds. 17:549-552

The nitration of 4-(5-R-2-thienyl) but-3-en-2-ones (R = H, CH3, C2H5) with a nitrating mixture and group I and III metal nitrates in concentrated sulfuric and trifluoroacetic acids, as well as in the presence of aluminum chloride, was investigated. N

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::534a1c2d673b4663507da1325705cb97
https://doi.org/10.1007/bf00503477

Zobrazit plný text záznamu

?,?-Unsaturated carbonyl compounds and their derivatives

Autor: Yu. P. Kitaev, Yu. D. Churkin, V. I. Savin

Publikováno v: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 25:1221-1224

In theα,β-unsaturated aldehydes and ketones the s-trans and s-cis conformations differ in the character of the nonplanar deformational vibrations of the =CH bonds. The s-cis conformers are characterized by vibrations in the more high-frequency regi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9442cc30351aec75ffe167eca7f4ac46
https://doi.org/10.1007/bf00928055

Zobrazit plný text záznamu

Synthesis and structure of nitro derivatives of 4-(2-thienyl)-3-buten-2-one

Autor: M. Yu. Antipin, L. V. Panfilova, Yu. D. Churkin, Yu. T. Struchkov

Publikováno v: Chemistry of Heterocyclic Compounds. 15:975-978

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4f0b0f008bdff5dbab52309b5a463ca5
https://doi.org/10.1007/bf00473839

Zobrazit plný text záznamu

Biologically active thiophene derivatives. II. Synthesis and biological activity of some unsaturated thiophene ketones and their derivatives

Autor: Yu. D. Churkin, D. A. Kulikova, L. V. Panfilova

Publikováno v: Pharmaceutical Chemistry Journal. 14:227-229

It is known that certain thiophene compounds containing a carbonyl group possess antibacterial and antifungal activity [1-3]. Ketones of the thiophene series containing a nitro group, and also nitrovinylthiophenes, possess the ability to suppress the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8c351d18942db84f3c7fc6d3af19bbf0
https://doi.org/10.1007/bf00777453

Zobrazit plný text záznamu

Nitro derivatives of the thiophene series. 4. Nitration of thiophene derivatives with metal nitrates in acetic anhydride

Autor: L. V. Panfilova, Yu. D. Churkin, V. D. Lugovoi, N. V. Boiko

Publikováno v: Chemistry of Heterocyclic Compounds. 17:673-675

The nitration of 2-formylthiophene, 2-acetothienone, and unsaturated ketones of the thiophene series with copper and aluminum nitrates in acetic anhydride at various temperatures was studied. At low temperatures 2-acetothienone gives a mixture of 4-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fa8e179a10d2d688435e30628a438fc2
https://doi.org/10.1007/bf00506032

Zobrazit plný text záznamu

Biologically active thiophene derivatives. IV. Synthesis and antiviral activity of unsaturated ketones of the thiophene series

Autor: V. I. Votyakov, L. V. Panfilova, M. M. Timofeeva, Yu. D. Churkin, E. I. Boreko

Publikováno v: Pharmaceutical Chemistry Journal. 16:103-105

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::40ce0c0b62a6b516833cf19defcd9921
https://doi.org/10.1007/bf00762027

Zobrazit plný text záznamu

Synthesis of some thienyl-substituted ?,?-unsaturated ketones containing a nitro group

Autor: L. V. Panfilova, Yu. D. Churkin

Publikováno v: Chemistry of Heterocyclic Compounds. 16:810-812

A method for the condensation of nitroformylthiophenes with ketones of the aromatic and heterocyclic series by means of ammonium acetate in glacial acetic acid was developed. The method makes it possible to obtain thienyl-substituted α, β-unsaturat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a3026af8900f0c162bd280cf47c891db
https://doi.org/10.1007/bf00513159

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání