Search

Your search keyword '"A. M. Skvortsov"' showing total 54 results
Start Over Author "A. M. Skvortsov" Journal chemischer informationsdienst
54 results on '"A. M. Skvortsov"'

3. ChemInform Abstract: STUDY OF 1-AZABICYCLICS. 21. BASICITY, STEREOCHEMISTRY AND PROTON AND CARBON-13 NMR SPECTRA OF PYRROLIZIDINE AND ITS HOMOLOGS IN AQUEOUS AND ACETONITRILE-WATER SOLUTIONS. PREDICTING THE PKA VALUE OF TRANS-FUSED PYRROLIZIDINE

Author

I. M. Skvortsov, I. V. Antipova, and V. V. Negrebetskii

Subjects
chemistry.chemical_compound, Aqueous solution, chemistry, Proton, Stereochemistry, Pyrrolizidine, Organic chemistry, General Medicine, Carbon-13 NMR, Acetonitrile, Spectral line
Published
1982
Full Text
View/download PDF

22. ChemInform Abstract: REACTION OF TERTIARY CYANOACETYLENIC ALCOHOLS WITH HYDROGEN BROMIDE

Author

A. N. Volkov, O. M. Rylova, Yu. M. Skvortsov, E. B. Oleinikova, and Boris A. Trofimov

Subjects
chemistry.chemical_compound, Chemistry, Hydrogen bromide, Intramolecular cyclization, General Medicine, Medicinal chemistry
Abstract

The addition of HBr to tertiary cyanoacetylenic alcohols is accompanied by intramolecular cyclization, which leads to the hydrobromides of bromiminodihydrofurans.

Published
1984
Full Text
View/download PDF

32. ChemInform Abstract: ABNORMAL CASE INVOLVING THE FORMATION OF ALKYLPYRROLES FROM OXIMES OF β-HYDROXY KETONES AND ACETYLENE

Author

E. B. Oleinikova, Trofimov Boris A, Al'bina I. Mikhaleva, and Yu. M. Skvortsov

Subjects
chemistry.chemical_compound, Acetylene, Chemistry, Organic chemistry, General Medicine, Medicinal chemistry, Pyrrole derivatives
Abstract

Aus 2-Methyl-1-hydroxy-3-butanon-oxim (I) erhalt man bei der Umsetzung mit Acetylen (II) in Dimethylsulfoxid bei 100°C unter einem Druck von 14 at nicht das zu erwartende Pyrrol (III), sondern unter Abspaltung von Formaldehyd das 1-Vinyl-2,3-dimethyl-pyrrol (IV).

Published
1979
Full Text
View/download PDF

34. 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
Full Text
View/download PDF

38. 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
Full Text
View/download PDF

39. ChemInform Abstract: RESEARCH ON 1-AZABICYCLES. XVIII. DETERMINATION OF THE CONFIGURATION OF 3-ALKYLPYRROLIZIDINES BY THE COMPETITIVE QUATERNIZATION METHOD. PROSPECTS FOR THE PREPARATIVE APPLICATION OF THE METHOD

Author

I. M. Skvortsov and I. V. Antipova

Subjects
Chemistry, Organic chemistry, General Medicine
Abstract

An mehreren Beispielen wird gezeigt, das die Quatemierung von Gemischen 3-substituierter cis- und trans-Pyrrolizidine stereospezifisch verlauft.

Published
1978
Full Text
View/download PDF

45. 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
Full Text
View/download PDF

48. ChemInform Abstract: UNTERSUCHUNGEN UEBER 1-AZABICYCLEN 11. MITT. DIE STEREOCHEMIE DER HYDRIERUNG VON 5- UND 7-(BETA-HYDROXYAETHYL)-1,2-DIHYDROPYRROLIZIN AN RHODIUM UND NICKEL, DIE KONFIGURATIONSBESTIMMUNG DER REAKTIONSPRODUKTE

Author

V. M. Levin and I. M. Skvortsov

Subjects
Chemistry, General Medicine, Medicinal chemistry
Abstract

Die Hydrierung der Dihydropyrrolidine (I) und (IV) uber 2,5% Rh/AI2O3 und Raney-Nickel fuhrt zu Gemischen der Verbindungen (II) und (III) und (V) und (VI), wobei jeweils die Bildung der cis-Verbindungen (II) und (V) uberwiegt.

Published
1973
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results