Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Grigorii A. Nikiforov"'
Autor:
Grigorii A. Nikiforov, Remir G. Kostyanovsky, Yurii A. Strelenko, Konstantin A. Lyssenko, S. V. Usachev, Ivan I. Chervin
Publikováno v:
Mendeleev Communications. 13:136-139
Novel cyclic hydrazines 4–8 with sterically hindered (4, 6, 7) or arrested (5, 8) nitrogen inversion were synthesised; pyrazolydine 5 was separated into enantiomers by chiral chromatography; the crystal structures of salts 5a and 5b were studied by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::596f0442fa97e189217cccfcedb06c1b
https://doi.org/10.1070/mc2003v013n03abeh001751
https://doi.org/10.1070/mc2003v013n03abeh001751
Autor:
Ivan I. Chervin, S. V. Usachev, Yurii A. Strelenko, Pavel A. Belyakov, Grigorii A. Nikiforov, Remir G. Kostyanovsky
Publikováno v:
Mendeleev Communications. 12:189-192
We found that (PriNH)2 with MeCHO form only pyrazoline 1 because of the competitive crotonization of the latter followed by reaction with hydrazine; pyrazoline 2, pyrazolidinones 6 and 9, pyrazolidinol 8 and pyrazolidine 7, in which the inversion of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68387179dbb09465fd2a0e2b49798062
https://doi.org/10.1070/mc2002v012n05abeh001626
https://doi.org/10.1070/mc2002v012n05abeh001626
Autor:
V. V. Ershov, Grigorii A Nikiforov
Publikováno v:
Russian Chemical Reviews. 44:816-822
The structure, multiplicity of the electronic states, and reactivity of cyclohexadienone carbenes are discussed. The literature on the chemical behaviour of such carbenes has not previously been surveyed. Only monocylic carbenes of the above type are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85487fce572e6c0ca7527af2e870ee1f
https://doi.org/10.1070/rc1975v044n10abeh002378
https://doi.org/10.1070/rc1975v044n10abeh002378
Autor:
Grigorii A Nikiforov, V. V. Ershov
Publikováno v:
Russian Chemical Reviews. 39:644-654
The specificity of a series of chemical properties of sterically hindered phenols depends greatly on their structure. In the series of 2,6-di-t-alkylphenols in which conjugation of the aromatic ring and hydroxyl group is retained (insignificant depar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e5277f0bf35cd5bedaa1b26a724cc46
https://doi.org/10.1070/rc1970v039n08abeh002012
https://doi.org/10.1070/rc1970v039n08abeh002012
Autor:
V. V. Ershov, Grigorii A Nikiforov
Publikováno v:
Russian Chemical Reviews. 35:817-833
CONTENTS I. Introduction 817 II. Tautomerism of phenols 818 III. Tautomerism of nitrosophenols 823 IV. Tautomerism of azophenols 825 V. Equilibrium phenol–quinonoid transformations of p-substituted phenols 827
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::610a9cb4d4a24cf8616fb04e77a321b5
https://doi.org/10.1070/rc1966v035n11abeh001541
https://doi.org/10.1070/rc1966v035n11abeh001541