Zobrazeno 1 - 10
of 44
pro vyhledávání: '"S. M. Shostakovskii"'
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 24:2346-2350
It is known that the cyclopropyl group promotes stabilization of carbocations, like vinyl or other unsaturated fragments [1-3]. There is no unanimity on the question of its effectiveness as a bridge group in the transmission of T-electronic effects.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b55830570333a4ab1c066112e2393d36
https://doi.org/10.1007/bf00921645
https://doi.org/10.1007/bf00921645
Autor:
A. A. Retinski, A. A. Kamalyutdinova-Salikhova, S. G. Vul'fson, V. V. Keiko, S. M. Shostakovskii, Anatoly N. Vereshchagin, B. A. Arbuzov
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 27:2526-2529
The meso- and dl-bis-2,2-dichlorocyclopropyl ethers exist in solution in a gauche-gauche type of conformation, with the three-membered rings arranged along different sides of the C-O-C plane.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::014c72e19ea880c21ee0f3ec832a8ccf
https://doi.org/10.1007/bf00941120
https://doi.org/10.1007/bf00941120
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 26:533-538
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cd5cd89eecb16af73ef21ac953cc89e
https://doi.org/10.1007/bf01179461
https://doi.org/10.1007/bf01179461
Publikováno v:
Pharmaceutical Chemistry Journal. 19:770-775
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15e6a7bb9ba5d99c854ba57d5f2c60c3
https://doi.org/10.1007/bf00766631
https://doi.org/10.1007/bf00766631
Autor:
S. M. Shostakovskii, A. M. Kamalyutdinova, Anatoly N. Vereshchagin, A. A. Retinskii, B. A. Arbuzov, S. G. Vul'fson, T. K. Voropaeva
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 27:515-520
1. The relation of polar and steric effects determines the position of the two-gauche-conformer equilibrium point in the gem-dichlorocyclopropyl alkyl and gem-dichlorocyclopropyl aryl ethers with radical orientation toward the CCl2 and CH2 groups. 2.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9646e7a5b5f97e4d56c33ae2bb3111d
https://doi.org/10.1007/bf00923928
https://doi.org/10.1007/bf00923928
Autor:
A. B. Grigor'ev, V. I. Kadentsev, N. S. Nikol'skii, T. K. Voropaeva, O. S. Chizhov, A. A. Retinskii, A. Ya. Podel'ko, S. M. Shostakovskii
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 27:1779-1782
1. A study has been made of the behavior of the geometrical isomers of the alkyl-and vinyloxy-2-chlorocyclopropanes under electron impact and chemical ionization. 2. Chemical-ionization methods can be used to distinguish the cis and trans isomers in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4827e528a69de4d9a37af312289e495b
https://doi.org/10.1007/bf00929223
https://doi.org/10.1007/bf00929223
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 27:319-325
1. The principal direction of alkoxy-gem-dichlorocyclopropane M+ ion breakdown is that leading to the formation of gem-dichlorocyclopropyl ions, and the alkyl ions resulting from their decomposition, together with rearranged fragments with m/e 90, 91
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccd3105cec9d45ec10b0e74c7cad4f2a
https://doi.org/10.1007/bf00923868
https://doi.org/10.1007/bf00923868
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 28:491-497
1. A study has been made of certain aspects of the behavior of the cyclopropyl thioethers under electron impact (EI) and chemical ionization. 2. The presence of the cyclopropane ring (CPR) gives rise to strong [M-alkene]+ ion peaks in the EI spectra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88b463bd686cabb2634eb74a06cb4eb9
https://doi.org/10.1007/bf00924819
https://doi.org/10.1007/bf00924819
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 26:107-112
1. We have studied the partial and complete LiAlH4 reduction of gem-dichlorocyclopropyl ethers to 2-chlorocyclopropyl and cyclopropyl ethers. 2. In the partial reduction of gem-dichlorocyclopropyl ethers the chlorine atom cis to the substituent is se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d3a6d03b1325df0049ecde5b022a5e3
https://doi.org/10.1007/bf00921504
https://doi.org/10.1007/bf00921504
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 27:2042-2045
1. The chlorosubstituted cyclopropyl ethers have been studied through13C NMR spectra and their configurations established. 2. The13C chemical shifts in the three-membered ring have been correlated with the steric characteristics of the alkoxy substit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f56d7971f8587d836a3c4bd95f13c9e
https://doi.org/10.1007/bf00946523
https://doi.org/10.1007/bf00946523