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dc.contributor.author | Sharipova S. | |
dc.contributor.author | Gilmutdinova A. | |
dc.contributor.author | Krivolapov D. | |
dc.contributor.author | Khisametdinova Z. | |
dc.contributor.author | Kataeva O. | |
dc.contributor.author | Kalinin A. | |
dc.date.accessioned | 2018-04-05T07:08:53Z | |
dc.date.available | 2018-04-05T07:08:53Z | |
dc.date.issued | 2017 | |
dc.identifier.issn | 0009-3122 | |
dc.identifier.uri | http://dspace.kpfu.ru/xmlui/handle/net/129391 | |
dc.description.abstract | © 2017, Springer Science+Business Media, LLC. [Figure not available: see fulltext.] Methods are presented for the preparation of isomeric (Е)-3-, (Е)-6-, (Е)-7-[4-(dimethylamino)phenylethenyl] quinoxalin-2-ones and 2-phenylquinoxalines – compounds of “donor–π-bridge” type, which serve as precursors for new nonlinear optical chromophores with potentially high first hyperpolarizability values. The introduction of dimethylanilinoethenyl moiety at position 3 of the quinoxaline system was achieved in good yields by fusion of 3-methyl derivatives with 4-(dimethylamino)benzaldehyde at 220°С in the presence of catalytic amounts of acetic anhydride and pyridine during the synthesis of 3-(dimethylaminophenylethenyl)quinoxalin-2-ones or as a result of condensation of these reactants by the action of 20 М sodium hydroxide solution in the presence of Aliquat 336 during the synthesis of 3-(dimethylaminophenylethenyl)-2-phenylquinoxalines. The introduction of dimethylanilinoethenyl moiety at positions 6 and 7 was achieved by Heck reaction of p-dimethylaminovinylbenzene with 6- or 7-bromoquinoxalines in the presence of palladium acetate. The structures of isomeric 6-bromo- and 7-bromo-3-methyl derivatives of quinoxalines were confirmed by X-ray diffraction analysis. | |
dc.relation.ispartofseries | Chemistry of Heterocyclic Compounds | |
dc.subject | (Е)-[4-(dimethylamino)phenyl]ethenylquinoxalines | |
dc.subject | first hyperpolarizability | |
dc.subject | nonlinear optical chromophores | |
dc.subject | X-ray diffraction analysis | |
dc.title | Synthesis of isomeric (E)-[4-(dimethylamino)phenyl]-vinylquinoxalines – precursors for a new class of nonlinear optical chromophores | |
dc.type | Article | |
dc.relation.ispartofseries-issue | 5 | |
dc.relation.ispartofseries-volume | 53 | |
dc.collection | Публикации сотрудников КФУ | |
dc.relation.startpage | 504 | |
dc.source.id | SCOPUS00093122-2017-53-5-SID85020715488 |