Zobrazeno 1 - 10
of 16
pro vyhledávání: '"N. G. Korzhenevskaya"'
Autor:
N. G. Korzhenevskaya
Publikováno v:
Russian Journal of Organic Chemistry. 44:1255-1260
Nucleophilic reactivity of alkylamines is determined by steric effect of the alkyl radicals. On the one hand, this effect hampers interaction of the reactant molecules and, on the other, changes bond angles at the nitrogen atom, thus favoring rehybri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59742f0cf016b5d1bcd564763c422316
https://doi.org/10.1134/s1070428008090017
https://doi.org/10.1134/s1070428008090017
Publikováno v:
Russian Journal of Organic Chemistry. 43:1475-1480
The main properties of phenylhydrazines are governed by the p-character of the unshared electron pair of the nitrogen of imino group changing in keeping with sp 3 → sp 2-regibridization of its atomic orbitals under the steric and electronic (-I eff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f321950a194070bd3adb277a525a9750
https://doi.org/10.1134/s1070428007100119
https://doi.org/10.1134/s1070428007100119
Publikováno v:
Russian Chemical Bulletin. 52:893-899
Changes in the hybrid state of atomic orbitals of nitrogen and p-character of LEP, which occur under the effect of saturated hydrocarbon radicals and polar substituents in aliphatic amines, differ substantially. Therefore, the effect of the both subs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c57fc648800aea5305a2fccdaea8e643
https://doi.org/10.1023/a:1024496225076
https://doi.org/10.1023/a:1024496225076
Publikováno v:
Russian Journal of Organic Chemistry. 37:1603-1610
Superbasic properties of naphthalene “protone sponges” are determined by the p character of the unshared electron pair on the nitrogen atom of the dialkylamino group and by distortion of the n,π* conjugation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8926418c39e86ad0dd2007a12b135a0b
https://doi.org/10.1023/a:1013868406075
https://doi.org/10.1023/a:1013868406075
Publikováno v:
Chemistry of Heterocyclic Compounds. 26:212-217
Betaine aldehydes of thiazole and imidazole containing substituted pyridinium and isoquinolinium cations were synthesized and their basicities were determined. The effect of the type of charge separation (betaine and ylid) and the nature of the heter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db419ecfd205012d943f7f1f0b273907
https://doi.org/10.1007/bf00499419
https://doi.org/10.1007/bf00499419
Publikováno v:
Chemistry of Heterocyclic Compounds. 21:157-160
A series of para-substituted 2,5-diphenyloxazoles was synthesized using Robinson-Gabriel procedure and the transfer of substituent electronic effects in these compounds was examined.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75b3ef3b99c0e508cb611458fa97fe2b
https://doi.org/10.1007/bf00504199
https://doi.org/10.1007/bf00504199
Publikováno v:
Theoretical and Experimental Chemistry. 9:508-514
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::512411cdf220491a821a420b6896deaf
https://doi.org/10.1007/bf00529071
https://doi.org/10.1007/bf00529071
Autor:
E. V. Titov, I. F. Vladimirtsev, E. A. Romanenko, I. V. Boldyrev, N. G. Korzhenevskaya, V. M. Cherkasov
Publikováno v:
Chemistry of Heterocyclic Compounds. 13:1006-1009
The reaction of 5-substituted 4,6-dichloro-2-aminopyrimidines with oxalyl chloride gives 2-isocyanatopyrimidines, the structures of which were proved by chemical means and the IR, PMR, and 35Cl nuclear quadrupole resonance spectra. The intermediate p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d24e3c03395700c05918431e87e36996
https://doi.org/10.1007/bf00472459
https://doi.org/10.1007/bf00472459
Publikováno v:
Theoretical and Experimental Chemistry. 8:121-126
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::673092283b7f2bd813b96c2b802e82e6
https://doi.org/10.1007/bf01185312
https://doi.org/10.1007/bf01185312
Publikováno v:
Chemistry of Heterocyclic Compounds. 11:78-80
It was shown by means of UV and IR spectroscopy and the ionization constants that the tautomeric equilibrium of 2-amino- and 2-mercapto derivatives of 3-methyl-3H-imidazo[4,5-b]pyridine is shifted to favor the amino and thione forms, respectively.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bba8f3e0af3f72a39328712ee06eb90c
https://doi.org/10.1007/bf00945279
https://doi.org/10.1007/bf00945279