Výsledky vyhledávání - "M. N. Rudaya"

Stereoisomerism of?-polyfluoroalkyl-?,?-enones

Autor: Vera I. Filyakova, K. I. Pashkevich, R. R. Latypov, M. N. Rudaya

Publikováno v: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 40:1496-1499

β-Polyfluoroalkyl-α,β-enones formed in the E,Z form are converted by the action of atmospheric oxygen into a 93∶7 mixture of E,Z and Z,E isomers in the dark and 60∶40 mixture of these isomers in the light. The Z isomer of 1-phenyl-4,4, 4-trifl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::adadbc6fcaf79baa1a7b4c707cd08c0e
https://doi.org/10.1007/bf00961266

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Conformational structure of esters of fluorinated acylpyruvic acids

Autor: Z. E. Skryabina, K. I. Pashkevich, P. N. Kondrat'ev, M. N. Rudaya, T. A. Sinitsyna, Viktor I. Saloutin

Publikováno v: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 39:1273-1277

Esters of fluorinated acylpyruvic acids were obtained for the first time. PMR and IR spectroscopy, dipole moment measurements, and quantum chemical calculations showed that these compounds exist as equilibrium mixtures of E and Z enolic isomers.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ef4c604b9f0170f4eeca4a48855f480b
https://doi.org/10.1007/bf00962397

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Reactions of fluoroalkyl-?-ketoesters with ammonia

Autor: Viktor I. Saloutin, L. G. Egorova, A. N. Fomin, K. I. Pashkevich, M. N. Rudaya

Publikováno v: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 35:1438-1442

1. It has been found that β-ketoesters containing highly fluorinated substituents [CF3, or H(CF2)4] react with ammonia to give β-aminocrotonate esters, or under severe conditions, β-ketoamides. The latter react with a tenfold excess of ammonia to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3f3e3e643bb85ec04c58a165b9109fec
https://doi.org/10.1007/bf00954820

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Vilsmeier-Haack reaction for polyfluorinated ?-dicarbonyl compounds

Autor: M. N. Rudaya, Viktor I. Saloutin, M. B. Bobrov, K. I. Pashkevich

Publikováno v: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 37:1617-1620

1. Polyfluorinated β-ketoesters in the Vilsmeier-Haack reaction form α-formyl-β-chlorovinyl esters. An unsubstituted β-chlorovinyl ester is formed in the case of methyl 4,4-difluoro-3-hydroxybutenoate along with the α-formyl derivative. 2. The r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::decdcb6cd6997a630a1d6a42e2070e95
https://doi.org/10.1007/bf00961110

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Halogenation of fluoroalkyl-substituted ?-ketoesters

Autor: M. N. Rudaya, Z. E. Skryabina, K. I. Pashkevich, Viktor I. Saloutin

Publikováno v: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 33:1016-1022

1. The bromination of fluoroalkyl-substituted β-ketoesters using bromine gives unstable α-bromo derivatives which undergo intermolecular rearrangement to yield the starting β-ketoesters and α,α-dibromo-β-ketoesters. 2. An IR spectroscopic and d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f0e7bfb2bc3721d7222dff904376293a
https://doi.org/10.1007/bf01141716

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Group dipole moments of fluoroalkyl substituents

Autor: M. N. Rudaya, K. I. Pashkevich, Viktor I. Saloutin

Publikováno v: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 33:1653-1655

1. The magnitudes and directions of the dipole moments of fluoroalkyl groups X(CF2)n, where X=F or H, n=1, 2, and 4, have been determined. It has been revealed that there is an increase in the dipole moments of fluoroalkyl groups as the number of F a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bcfabdec6a43b5e36ba644fe781dcd38
https://doi.org/10.1007/bf00959199

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