Zobrazeno 1 - 10
of 48
pro vyhledávání: '"M. V. Kazankov"'
Publikováno v:
Scopus-Elsevier
How 6-amino derivatives of pyrimidinoanthrone react with mineral acids has been established by IR and electronic spectroscopy and quantum mechanical calculations. Monoprotonation occurs at the cyclic nitrogen in position 3 and the second protonation
Publikováno v:
Chemistry of Heterocyclic Compounds. 30:957-963
4-Amino derivatives of pyrimidinoanthrone exist in the form of an aminoketone isomer in the crystalline state in neutral organic solutions, but in acid and alkaline media the tautomeric equilibrium is shifted toward formation of ionic forms of the im
Autor:
M. V. Kazankov, O. A. Zotova
Publikováno v:
ChemInform. 26
Publikováno v:
ChemInform. 27
Publikováno v:
ChemInform. 27
How 6-amino derivatives of pyrimidinoanthrone react with mineral acids has been established by IR and electronic spectroscopy and quantum mechanical calculations. Monoprotonation occurs at the cyclic nitrogen in position 3 and the second protonation
Autor:
O. A. Zotova, M. V. Kazankov
Publikováno v:
ChemInform. 31
Publikováno v:
Chemistry of Heterocyclic Compounds. 10:1185-1191
By an analysis of the IR spectra of solutions of aminoanthrapyridones in chloroform it was demonstrated that the primary and secondary amino groups in the 1 and 6 positions form an intermolecular hydrogen bond with the CO groups; the amino groups in
Publikováno v:
Chemistry of Heterocyclic Compounds. 14:1116-1119
The acidities of anthraquinone and its 1- and 6-hydroxy derivatives were studied. It is shown that the anthrone ring in the anthrapyridone molecule displays a strong electron-acceptor effect that stabilizes the anion during the development in the pyr
Autor:
M. V. Kazankov, E. G. Sadovykh
Publikováno v:
Chemistry of Heterocyclic Compounds. 14:1100-1103
Pyrroloanthrone (6H-naphth[1,2,3-c,d]indol-6-one) and N-methylpyrroloanthrone, which was obtained from it by methylation in alkaline media, undergo electrophilic substitution (nitration, bromination, and diazo coupling) selectively in the 1 position.
Publikováno v:
Journal of Applied Spectroscopy. 27:1556-1561