Nikita A. Kazin
Russian Academy of Sciences
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Featured researches published by Nikita A. Kazin.
RSC Advances | 2016
Roman A. Irgashev; Nikita A. Kazin; Grigory A. Kim; Gennady L. Rusinov; Valery N. Charushin
A series of new polycyclic compounds bearing the 5,11-dihydroindolo[3,2-b]carbazole ring system, as the common motif of their nine-ring scaffolds, has been successfully prepared with the usage of an efficient two-step strategy, based on the double Friedel–Crafts acylation of 5,11-dihexyl-6,12-di(hetero)aryl-substituted 5,11-dihydroindolo[3,2-b]carbazoles with 2-iodobenzoyl chloride in the presence of SnCl4, followed by regioselective palladium-catalyzed cyclization of the obtained 2,8-bis(2-iodobenzoyl) derivatives into the desired fused 9H-fluoren-9-ones. Some modifications of these nine-ring structures have been performed to afford compounds of the same family bearing the 9H-fluorene fragments. Basic photophysical and electrochemical properties as well as thermal stability of the new fused indolo[3,2-b]carbazole derivatives have been determined.
Beilstein Journal of Organic Chemistry | 2017
Roman A. Irgashev; Nikita A. Kazin; Gennady L. Rusinov; Valery N. Charushin
A new general approach to double nitration of 6,12-di(hetero)aryl-substituted and 6,12-unsubstituted 5,11-dialkyl-5,11-dihydroindolo[3,2-b]carbazoles by acetyl nitrate has been developed to obtain their 2,8-dinitro and 6,12-dinitro derivatives, respectively. A formation of mono-nitro derivatives (at C-2 or C-6) from the same indolo[3,2-b]carbazoles has also been observed in several cases. Reduction of 2-nitro and 2,8-dinitro derivatives with zinc powder and hydrochloric acid has afforded 2-amino- and 2,8-diamino-substituted indolo[3,2-b]carbazoles, while reduction of 6,12-dinitro derivatives under similar reaction conditions has been accompanied by denitrohydrogenation of the latter compounds into 6,12-unsubstituted indolo[3,2-b]carbazoles. Formylation of 6,12-dinitro derivatives has proved to occur only at C-2, while bromination of these compounds has taken place at both C-2 and C-8 of indolo[3,2-b]carbazole scaffold. Moreover, 6,12-dinitro-substituted indolo[3,2-b]carbazoles have been modified by the reactions with S- and N-nucleophiles. Notably, the treatment of 6,12-dinitro compounds with potassium thiolates has resulted in the displacement of both nitro groups, unlike potassium salts of indole or carbazole, which have caused substitution of only one nitro group.
Inorganic Materials: Applied Research | 2017
A. V. Dmitriyev; A. R. Yusupov; Roman A. Irgashev; Nikita A. Kazin; Eugene I. Mal'tsev; D. A. Lypenko; Gennady L. Rusinov; A. V. Vannikov; Valery N. Charushin
Novel compounds—substituted indolo[3,2-b]carbazoles (SIC)—which demonstrate semiconducting properties are synthesized. Electroluminescence (EL) is studied in multilayer diode structures based on SIC. The values of hole (6.38 × 10–5 cm2/(V s)) and electron mobilities (1.31 × 10–5 cm2/(V s)) of these electroactive materials are measured. It is estimated that heteroaromatic nuclei are the electron transport centers of SIC molecules.
Mendeleev Communications | 2016
Artem V. Dmitriev; Azat R. Yusupov; Roman A. Irgashev; Nikita A. Kazin; Eugene I. Mal’tsev; D. A. Lypenko; Gennady L. Rusinov; A. V. Vannikov; Valery N. Charushin
Synthesis | 2015
Roman A. Irgashev; Nikita A. Kazin; Grigory A. Kim; Gennady L. Rusinov; Valery N. Charushin
Tetrahedron Letters | 2017
Roman A. Irgashev; Nikita A. Kazin; Gennady L. Rusinov; Valery N. Charushin
Tetrahedron Letters | 2015
Nikita A. Kazin; Yuriy A. Kvashnin; Roman A. Irgashev; Wim Dehaen; Gennady L. Rusinov; Valery N. Charushin
Polyhedron | 2018
Il Son Khan; D. G. Samsonenko; Roman A. Irgashev; Nikita A. Kazin; Gennady L. Rusinov; Valery N. Charushin; M. S. Zavakhina; Vladimir P. Fedin
Dyes and Pigments | 2017
Roman A. Irgashev; Nikita A. Kazin; N. I. Makarova; I. V. Dorogan; Vladimir V. Malov; A. R. Tameev; Gennady L. Rusinov; A. V. Metelitsa; Vladimir I. Minkin; Valery N. Charushin
Arkivoc | 2018
Roman A. Irgashev; Nikita A. Kazin; Gennady L. Rusinov; Valery N. Charushin