Reactions of 6-(Dimethylamino)fulvene with diazoazoles and arene- and azolediazonium salts
作者:E. V. Sadchikova、D. L. Alekseeva、I. A. Ushakov、V. G. Nenajdenko
DOI:10.1134/s1070428017100098
日期:2017.10
6-(Dimethylamino)fulvene reacted with 3- and 4-substituted 5-diazoazoles, as well as with 4-substituted benzene- and pyrazole-5-diazonium salts, in an aprotic solvent with high regioselectivity at an extremely high rate to give acyclic coupling products at the α-carbon atom of the cyclopenta-1,3-diene fragment. The nature of the diazo component did not affect the reaction direction, rate, or yield
Interaction of 3,8-Disubstituted Imidazo-[5,1-C][1,2,4]Triazines with Nucleophiles**
作者:E. V. Sadchikova、V. S. Mokrushin*
DOI:10.1007/s10593-014-1557-5
日期:2014.10
4-aminoimidazo[5,1-с][1,2,4]triazine-3,8-dicarboxylate in reactions with nucleophiles and demonstrated the possibility of selective formation of monoamides by interaction with primary and secondary aliphatic amines. It was determined that the carbon atom at position 4 of imidazo[1,5-с][1,2,4]triazine system underwent nucleophilic attack, enabling the synthesis of imidazo-[1',5':3,4][1,2,4]triazino[5,6-b][1
Synthesis of 4-arylcarbamoyl-5-(2-hydroxynaphthylazo)imidazoles and 1-substituted naphtho[2,1-e]imidazo[5,1-c][1,2,4]triazines
作者:E. V. Sadchikova、V. S. Mokrushin
DOI:10.1007/s11172-006-0408-7
日期:2006.7
The reactions of β-naphthol with 5-diazoimidazoles and imidazolyl-5-diazonium salts containing chemically different carboxamide groups in position 4 were studied. Heterocyclization of 4-arylcarbamoyl-5-(2-hydroxynaphthylazo)imidazoles formed in these reactions was investigated. The presence of the NH fragment in the amide group prevents this process, the reaction giving instead 3-substituted 3,7-dihydroimidazo[4
作者:Vasiliy Bakulev、Wim Dehaen、Elena Sadchikova、Kristof Van Hecke、Koen Robeyns、Luc Van Meervelt、Vladimir Mokrushin、Albert Padwa
DOI:10.1055/s-2004-830895
日期:——
The cycloaddition of diazoazoles with acylisothiocyanates has been found to result in the formation of a 1,2,3,5-thiatriazine ring. This new reaction was used to prepare novel 8-substituted 4-[benzoylimino-4H-imidazo(pyrazolo)][5,1-d]-[1,2,3,5]thiatriazines. The structures of the compounds prepared were carefully studied by X-ray diffraction, IR and NMR spectroscopy.
研究发现,重氮唑与酰基异硫氰酸盐进行环加成反应可形成 1,2,3,5 硫三嗪环。这种新反应被用于制备新型 8 取代 4-[苯甲酰亚氨基-4H-咪唑(吡唑)][5,1-d]-[1,2,3,5]噻三嗪。通过 X 射线衍射、红外光谱和核磁共振光谱对所制备化合物的结构进行了仔细研究。
Non-aromatic azolo[5,1-<i>c</i>][1,2,4]triazines: a pot, atom and step economic (PASE) synthesis, mechanistic insight and fluorescence properties
作者:Elena V. Sadchikova、Nikolai A. Beliaev、Daria L. Alexeeva、Nikita E. Safronov、Nataliya P. Belskaya
DOI:10.1039/d2nj04085a
日期:——
4-dihydroimidazo[5,1-c][1,2,4]triazines was developed which significantly expanded the scope of these compounds for further studies of their biological activity. The structure and photophysical properties of the synthesized bicyclic heterocycles containing a 1,2,3-thiadiazole ring and several functional groups have been studied. The features of their absorption and emission are revealed, and preliminary directions
详细研究 β-1,2,3-噻二唑烯胺与含有重氮官能团的唑类的相互作用,可以确定 5-重氮唑盐和 5-重氮唑反应性的差异,从而导致实施各种反应机理和芳族或非芳族双环体系的形成。通过核磁共振光谱监测这种转变揭示了关键的不稳定中间体,该中间体在低温下被进一步分离,从而获得了指定结构的证据。一种制备新型 1,4-二氢吡唑并[5,1- c ][1,2,4]三嗪和 1,4-二氢咪唑[5,1 - c ] 的有效 PASE 方法][1,2,4]三嗪的开发显着扩大了这些化合物的范围,以进一步研究其生物活性。已经研究了合成的含有1,2,3-噻二唑环和几个官能团的双环杂环的结构和光物理性质。揭示了它们的吸收和发射特性,初步概述了它们作为新型荧光传感器的应用方向。