Zobrazeno 1 - 10
of 36
pro vyhledávání: '"T. I. Yushmanova"'
Autor:
T. I. Yushmanova, V. Yu. Vitkovskii, E. N. Medvedeva, V. A. Lopyrev, Lyudmila V. Klyba, M. G. Voronkov
Publikováno v:
Journal of Fluorine Chemistry. 34:209-227
Main pathways in the electron-impact induced mass spectrometric fragmentation of hydrazides and alkylhydrazides of alkanecarboxylic acids have been studied. The effect of the structure of fluorinated acyl group and hydrocarbon radical on the dissocia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e742b6761abf9a92b87d110399fb5ea
https://doi.org/10.1016/s0022-1139(00)85071-x
https://doi.org/10.1016/s0022-1139(00)85071-x
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 29:1911-1914
It has been demonstrated by means of19F NMR that l-acyl-2-alkyl (phenyl) hydrazines are the main products of the monoacylation of alkyl- and phenylhydrazine with derivatives of perfluorocarboxylic acids. The preferred conformations with respect to th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91ac2e9a725d643a8b6c175ba69fa1b7
https://doi.org/10.1007/bf00949655
https://doi.org/10.1007/bf00949655
Autor:
T. I. Yushmanova, G. V. Rassolova, E. N. Medvedeva, V. A. Lopyrev, T. V. Kasfaik, S. M. Ponomareva
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 31:1965-1968
1. The NH acidity (pKa) of a series of carboxylic acid hydrazides and trifluoroacetamide in water was determined. 2. A linear dependence which correlated the pKa values of RCONHNH2 hydrazides with theσ* constants of the R substituents was found. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9de731f220c4d2d657f6b48fea61c48
https://doi.org/10.1007/bf00950632
https://doi.org/10.1007/bf00950632
Publikováno v:
Die Makromolekulare Chemie. 175:757-773
The cationic polymerization of vinylacetylenes can be implemented using an excess of catalysts, such as BF3O(C2H5)2, SnCl4, H2SO4, CCl3COOH, CF3COOH (20–50 mol per 100 mol monomer). This is due to the formation of a charge-transfer complex between
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::181e97f20562cae971d0f4a224bdfccb
https://doi.org/10.1002/macp.1974.021750306
https://doi.org/10.1002/macp.1974.021750306
Autor:
T. I. Yushmanova, V. A. Lopyrev, M. G. Voronkov, E. N. Mevedeva, Nina N. Chipanina, G. I. Sarapulova, Yu. L. Frolov
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 29:1915-1919
1. The introduction of a phenyl or alkyl substituent at the β-nitrogen atom in the hydrazides of carboxylic acids and their fluorinated analogs leads to a trans orientation of the unshared pairs of electrons on the nitrogen atoms. 2. The influence o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2fff08bf17efb96da2441c366a7dd5d
https://doi.org/10.1007/bf00949656
https://doi.org/10.1007/bf00949656
Autor:
Nina N. Chipanina, G. V. Rassolova, L. I. Volkova, T. V. Kashik, Yu. L. Frolov, T. I. Yushmanova, V. A. Lopyrev, G. I. Sarapulova
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 35:942-945
1. The reaction of 1-fluoroacyl-1,2-dimethylhydrazides with phenol and trifluoroacetic acid in a medium of CCl4 and MeCN takes place with the formation of a molecular H complex, and the oxygen atom in the C=O group is the H bond acceptor in the hydra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab29e3d8ccb52802ed93cc1f4de77296
https://doi.org/10.1007/bf00955354
https://doi.org/10.1007/bf00955354
Autor:
Yu. L. Frolov, L. I. Volkova, Nina N. Chipanina, T. I. Yushmanova, R. G. Sultangareev, N. A. Khlopenko, V. A. Lopyrev, G. I. Sarapulova
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 33:2056-2060
1. The absorption bands In the UV spectra of 1-methylhydrazides of aromatic acids have been assigned to specific types of electronic transitions. It has been shown that the amide fragment plays the decisive role in determining the nature of the elect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1db5ccc7e447ca5c07da66d7822aa452
https://doi.org/10.1007/bf00954081
https://doi.org/10.1007/bf00954081
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 28:1760-1764
It was established by the1H and19F NMR method that the insertion of fluorine atoms in the acyl radical of mono- and diacylmethylhydrazines has a substantial effect on the population of the rotamers, without noticeably changing the activation energy o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4da4ee6add10cb0f8859221722208e90
https://doi.org/10.1007/bf00951018
https://doi.org/10.1007/bf00951018
Autor:
V. V. Keiko, V. A. Lopyrev, M. G. Voronkov, Nina N. Chipanina, Yu. L. Frolov, T. I. Yushmanova, E. N. Medvedeva, G. I. Sarapulova
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 30:557-560
1. The molecules of 1-acetyl-, 1-trifluoroacetyl-, and 1-difluoroacetyl-1,2-dimethylhydrazines form hydrogen bonds, which remain in dilute solutions and, partly, in the gaseous state. 2. Associations in 1-acetyl-1,2-dimethylhydrazine are evidently re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b794f3c300527b5c4bf77b778b90cc5
https://doi.org/10.1007/bf00949711
https://doi.org/10.1007/bf00949711
Publikováno v:
Polymer Science U.S.S.R.. 13:2319-2324
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90e42446c597ad46d0f1191002800307
https://doi.org/10.1016/0032-3950(71)90439-4
https://doi.org/10.1016/0032-3950(71)90439-4