Zobrazeno 1 - 10
of 57
pro vyhledávání: '"V. Ya. Fain"'
Publikováno v:
Russian Journal of Organic Chemistry. 49:696-701
Keto-enol and amine-imine tautomerism and equilibria with trans-conformers are characteristic of 1-(alkyl,aryl)amino-4-hydroxy-9,10-anthraquinones. Amino forms possess 1,10- and 1,4-, but not 9,10-quinoid structure. Various tautomeric and conformeric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d233a2d94da39ec9ecd3f387386b031e
https://doi.org/10.1134/s1070428013050102
https://doi.org/10.1134/s1070428013050102
Publikováno v:
Russian Journal of Physical Chemistry A. 87:623-627
Based on the example of 1,4,5,8-tetraamino-9,10-anthraquinone, a method is described for establishing the tautomeric compositions and sequences of tautomeric transformations that occur in known samples of quinones. An analysis of electronic absorptio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::479ea3792e1454481b9e10fca0334c01
https://doi.org/10.1134/s0036024413040109
https://doi.org/10.1134/s0036024413040109
Publikováno v:
Russian Journal of General Chemistry. 83:485-491
Compounds widely known as 1,4-bis(alkylamino)-9,10-anthraquinones are in fact neither individual substances nor substituted 9,10-anthraquinones but equilibrium mixtures of tautomers. Their aminoimine tautomeric transformations follow the sequence 4,9
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5833ccda14c465d6c1c4cccef3e70d6
https://doi.org/10.1134/s1070363213030146
https://doi.org/10.1134/s1070363213030146
Publikováno v:
Russian Journal of General Chemistry. 82:1558-1566
Structure and amino-imine tautomerism of α-aminoanthraquinones, 1,5-and 1,8-diaminoanthraquinones, as well as 1,4,5-triamino-9,10-anthraquinones was studied. We found that in the study of properties of the compounds prone to tautomeric transformatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c96d2cb1e1dce723ff3d840fcf1d6b8
https://doi.org/10.1134/s1070363212090186
https://doi.org/10.1134/s1070363212090186
Publikováno v:
Russian Journal of Organic Chemistry. 48:667-675
The fine structure of the πl,π*-absorption of hydroxyanthraquinones solutions in sulfuric acid arises due to the existence of the protonated forms as equilibrium mixtures of tautomers and conformers distinguished by the positions of the π-bonds, c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3190f1770a010c8a315d36d38f88b393
https://doi.org/10.1134/s1070428012050065
https://doi.org/10.1134/s1070428012050065
Publikováno v:
Russian Journal of Organic Chemistry. 48:376-382
Chemistry of 9,10-anthraquinones is considered as chemistry of isomeric anthraquinones existing in dynamic equilibrium with each other. Diversity of electronic absorption spectra of the same compounds is determined by tautomeric transformations. Aliz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a27f319ddb439db0e09dea08a678a1b
https://doi.org/10.1134/s1070428012030074
https://doi.org/10.1134/s1070428012030074
Publikováno v:
Russian Journal of General Chemistry. 80:2470-2477
The products of reaction of α-hydroxyanthraquinones with boric acid are mixtures of 9,10-, 1,10 -, 1,4- and 1,5-quinoid tautomeric complexes of boric acid and borate esters differing by the coordination bonds with carbonyl groups existing in the dyn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f602752712022fbeb6dfe4189fdf9b2
https://doi.org/10.1134/s1070363210120121
https://doi.org/10.1134/s1070363210120121
Publikováno v:
Russian Journal of General Chemistry. 80:1986-1995
Existing views on the deprotonation and complexation of 1-amino-4-hydroxyanthraquinone are wrong. This compound, its anions, and complexes with metals are not individual substances, but they form a dynamic equilibrium mixture of keto-enol (keto-oxide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc1d7b6935933d7f1d6f2fb9370b5a05
https://doi.org/10.1134/s107036321010018x
https://doi.org/10.1134/s107036321010018x
Publikováno v:
Russian Journal of Coordination Chemistry. 36:396-400
Diversity of electronic absorption spectra of the metal complexes with 1-amino-4-hydroxyan-thraquinone is a consequence of the fact that they exist as equilibrium mixtures of tautomers with the isomeric quinoid structure of the ligand. These complexe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2887f187510ce65f87ef66da213951b7
https://doi.org/10.1134/s1070328410050131
https://doi.org/10.1134/s1070328410050131
Publikováno v:
Russian Journal of Organic Chemistry. 46:655-660
The disperse dye red 2C regarded as 1-amino-4-hydroxy-9,10-anthraquinone is not a 9,10-anthraquinone derivative. It is characterized by a keto-enol and amino-imine tautomerism, and it consists of equilibrium mixtures of tautomers and conformers conta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::779ca7137490de68d37def3a240cb800
https://doi.org/10.1134/s107042801005009x
https://doi.org/10.1134/s107042801005009x