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24 results on '"A. M. Skvortsov"'

9. Cyanoacetylene and its derivatives

Author

Yu. M. Skvortsov, A. N. Volkov, V. B. Modonov, G. A. Kalabin, Boris A. Trofimov, and Anastasiya G. Mal'kina

Subjects
chemistry.chemical_compound, chemistry, Cyanoacetylene, Organic chemistry, General Chemistry
Abstract

Tertiary cyanoacetylenic carbinols in the presence of alkalis undergo autoheterocyclization with the formation of 2,2-dialkyl-4,5-di(cyanomethylidene)oxetanes.

Published
1980
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10. Cyanoacetylene and its derivatives 1. Synthesis of substituted cyanoacetylenes and their reaction with glycols

Author

A. G. Mal'kina, V. V. Gedymin, E. B. Oleinikova, A. N. Volkov, Yu. M. Skvortsov, I. V. Kazin, and Boris A. Trofimov

Subjects
chemistry.chemical_compound, Chemistry, Yield (chemistry), Cyanide, Intramolecular cyclization, Cyanoacetylene, chemistry.chemical_element, Organic chemistry, General Chemistry, Copper
Abstract

1. We have established conditions for the reaction of bromophenylacetylene with copper (I) cyanide whereby the yield of phenylcyanoacetylene can be increased from 37 to 80%. 2. The reaction of phenylcyanoacetylene and cyanoacetylenic alcohols with 1,2- and 1,3-glycols does not terminate with the formation of substitutedβ-organyloxyacrylonitriles; the latter undergo intramolecular cyclization to the corresponding 2-(cyanomethyl)-1,3-dioxolanes and 1,3-dioxanes.

Published
1978
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11. Synthesis of 1,2,4-triazolo[3,2-b]-1,3-thiazines

Author

Abramova Nina D, A. G. Mal'kina, B. V. Trzhtsinskaya, Alexander I. Albanov, Yu. M. Skvortsov, and G. G. Skvortsova

Subjects
chemistry.chemical_compound, Potassium hydroxide, chemistry, Potassium, Organic Chemistry, Heteroatom, Organic chemistry, Hydroxide, Cyanoacetylene, chemistry.chemical_element, Medicinal chemistry, Triethylamine
Abstract

1,2,4-Triazolo[3,2-b]-1,3-thiazines were obtained by the reaction of 1,2,4,-triazole-3-thiones with an equimolar amount of 1-phenyl-2-cyanoacetylene in the presence of triethylamine or potassium hydroxide. It is shown that triazolethiones form N,S diadducts upon reaction with a twofold excess of cyanoacetylene. The nature of the heteroatom in the exo position of the heteroring affects the direction of addition to phenylcyanoacetylene. 2,4-Bis(1-phenyl-2-cyanovinylene)-1,2,4-triazol-3-one was synthesized.

Published
1982
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19. ChemInform Abstract: CYANOACETYLENE AND ITS DERIVATIVES. 1. SYNTHESIS OF SUBSTITUTED CYANOACETYLENES AND THEIR REACTION WITH GLYCOLS

Author

E. B. Oleinikova, Yu. M. Skvortsov, A. N. Volkov, V. V. Gedymin, A. G. Mal'kina, I. V. Kazin, and Boris A. Trofimov

Subjects
chemistry.chemical_compound, chemistry, Yield (chemistry), Cyanide, Intramolecular cyclization, Cyanoacetylene, chemistry.chemical_element, General Medicine, Medicinal chemistry, Copper
Abstract

1. We have established conditions for the reaction of bromophenylacetylene with copper (I) cyanide whereby the yield of phenylcyanoacetylene can be increased from 37 to 80%. 2. The reaction of phenylcyanoacetylene and cyanoacetylenic alcohols with 1,2- and 1,3-glycols does not terminate with the formation of substitutedβ-organyloxyacrylonitriles; the latter undergo intramolecular cyclization to the corresponding 2-(cyanomethyl)-1,3-dioxolanes and 1,3-dioxanes.

Published
1978
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20. ChemInform Abstract: CYANOACETYLENE AND ITS DERIVATIVES. 3. BASE-CATALYZED AUTOHETEROCYCLIZATION OF CYANOACETYLENE CARBINOLS

Author

Yu. M. Skvortsov, Anastasiya G. Mal'kina, G. A. Kalabin, Y. I. Volkov, V. B. Modonov, and Trofimov Boris A

Subjects
chemistry.chemical_compound, chemistry, Stereochemistry, Cyanoacetylene, General Medicine, Base (exponentiation), Medicinal chemistry, Catalysis
Abstract

Behandelt man 1-Cyan-3,3-dialkyl-3-hydroxy-1-propin (II) mit NaOH-haltigem Dioxan, so entsteht 2,2-Dia1ky1-3,4-di-cyanmethyliden-oxethan (IV).

Published
1981
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21. ChemInform Abstract: SYNTHESIS OF 1,2,4-TRIAZOLO(3,2-B)-1,3-THIAZINES

Author

B. V. Trzhtsinskaya, Abramova Nina D, A. G. Mal'kina, Alexander I. Albanov, G. G. Skvortsova, and Yu. M. Skvortsov

Subjects
Potassium hydroxide, chemistry.chemical_compound, chemistry, Heteroatom, Cyanoacetylene, General Medicine, Triethylamine, Medicinal chemistry
Abstract

1,2,4-Triazolo[3,2-b]-1,3-thiazines were obtained by the reaction of 1,2,4,-triazole-3-thiones with an equimolar amount of 1-phenyl-2-cyanoacetylene in the presence of triethylamine or potassium hydroxide. It is shown that triazolethiones form N,S diadducts upon reaction with a twofold excess of cyanoacetylene. The nature of the heteroatom in the exo position of the heteroring affects the direction of addition to phenylcyanoacetylene. 2,4-Bis(1-phenyl-2-cyanovinylene)-1,2,4-triazol-3-one was synthesized.

Published
1983
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23. Reaction of benzimidazole-2-thione with cyanoacetylene alcohols

Author

Abramova Nina D, Yu. M. Skvortsov, G. G. Skvortsova, Anastasiya G. Mal'kina, and L. V. Andriyankova

Subjects
chemistry.chemical_compound, Benzimidazole, Chemistry, Group (periodic table), Cyanoacetylene, Organic chemistry, General Chemistry
Abstract

2-Iminobenzimidazo-1,3-thiazines containing a hydroxyl group were obtained by the reaction of benzimid-azole-2-thione with tertiary cyanoacetylene alcohols. It was observed that they have enhanced stability toward alkalis.

Published
1984
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