Search

Your search keyword '"Mirskova Anna N"' showing total 57 results
Start Over Author "Mirskova Anna N" Journal chemischer informationsdienst
57 results on '"Mirskova Anna N"'

9. ChemInform Abstract: Nucleophilic Reactions at the Vinylic Center. Part 17. Formation of Derivatives of 1,3,4-Thiadiazole and 1,3,4-Oxadiazole by the Reactions of 2,2-Dichlorovinyl Sulphones with Thiosemicarbazide and Semicarbazide

Author

I. D. Kalikhman, Mirskova Anna N, B. A. Shainyan, and L. N. Indyukova

Subjects
Chemical kinetics, Semicarbazide, chemistry.chemical_compound, Monomer, Semicarbazides, Thiadiazoles, chemistry, Nucleophile, Aryl, Organic chemistry, Oxadiazole, General Medicine, Medicinal chemistry
Abstract

The reaction of 2,2-dichlorovinyl sulfones with thiosemicarbazide and semicarbazide, leading to the formation of 2-alkyl(aryl)sulfonylmethyl-5-amino-1,3,4-thiadiazoles and 2-alkyl(aryl)sulfonylmethyl-5-amino-1,3,4-oxadiazoles respectively, was investigated. In contrast, the reactions of sulfonylacetic esters with thiosemicarbazide and semicarbazide lead to the formation of 3-sulfonyl-methyl-5-mercapto-1,2,4-triazoles and 3-sulfonylmethyl-5-hydroxy-1,2,4-triazoles respectively. The derivatives of 1,3,4-thiadiazole and 1,3,4-oxadiazole are formed from the 2,2-dichlorovinyl sulfones by substitution of the two chlorine atoms with subsequent cyclization of the intermediately formed salts.

Published
1986
Full Text
View/download PDF

10. ChemInform Abstract: SYNTHESIS OF BIOLOGICALLY ACTIVE HYDRAZONES AND SUBSTITUTED PYRAZOLES FROM .beta±beta.-DICHLOROVINYL KETONES

Author

Mirskova Anna N, Galina G. Levkovskaya, and M. G. Voronkov

Subjects
chemistry.chemical_classification, chemistry.chemical_compound, Semicarbazide, Ketone, chemistry, Hydrazine, Biological activity, General Medicine, Pyrazole, Beta (finance), Medicinal chemistry
Abstract

1. Alkylβ,β-dichlorovinyl ketones react with semicarbazide and thiosemicarbazide to form hydrazones, while arylβ,β-dichlorovinyl ketones react with semicarbazide to form previously unknown N-carbaminopyrazoles. 2. The reaction of methylβ, β-dichlorovinyl ketone with hydrazine yields 3-methyl-5-(3′-methyl-5′-chloropyrazolyl)pyrazole.

Published
1981
Full Text
View/download PDF

15. ChemInform Abstract: DIMERS OF α-OXOTHIOKETENES

Author

I. D. Kalikhman, Galina G. Levkovskaya, Tamara I. Vakul'skaya, M. G. Voronkov, V. A. Pastunovich, and Mirskova Anna N

Subjects
Chemistry, Stereochemistry, General Medicine
Abstract

Bei der Reaktion der Alkalisalze (II) mit β,β-Dichlorvinyl-methyl-keton (I) in Ather bei 30 - 40°C erhalt man die zwei isomeren Verbindungen (IV) und (V), deren Mengenverhaltnis von dem verwendeten Alkalisalz abhangig ist.

Published
1977
Full Text
View/download PDF

40. ChemInform Abstract: DIFFERENT REACTION OF ALKYL β,β-DICHLOROVINYL SULFONES WITH P-BROMOANILINE

Author

I. D. Kalikhman, V. Yu. Vitkovskii, M. G. Voronkov, P. V. Makerov, Mirskova Anna N, and Alexander V. Martynov

Subjects
chemistry.chemical_classification, chemistry.chemical_compound, Chemistry, Stereochemistry, 4-Bromoaniline, General Medicine, Alkyl
Abstract

1 Bei Reaktionen der Dichl orvinylsulfone (I) mit p-Bromanilin in siedendem Ethanol = entstehen neben den erwarteten Amidinen (III), wahrscheinlich durch Solvolyse primar gebildeter Imidoylchloride, die Amide (II).

Published
1980
Full Text
View/download PDF

46. ChemInform Abstract: REAKTIONEN VON ALKYL-(BETA,BETA-DICHLORVINYL)-KETONEN MIT ANILIN

Author

A. S. Atavin, Mirskova Anna N, I. D. Kalikhman, and Galina G. Levkovskaya

Subjects
Chemistry, General Medicine, Medicinal chemistry
Abstract

Die Dichlorvinylketone (I) reagieren mit Anilin (im Uberschus eingesetzt) in I)iathyl- ather, Benzol oder Athanol exotherm zu den Dianilinovinylketimin-hydrochloriden (II); bei der alkalischendbder sauren Hydrolyse dieser Ketimine entstehen die 1)ianilinoymylketone (III).

Published
1975
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results