基于3-(苯并咪唑-2-基)喹喔啉-2(1 H)-与1,2-的环收缩,已开发出一种高效且通用的具有两个苯并咪唑片段的喹喔啉衍生物的合成方法。二氨基苯及其各种类型的取代和稠合衍生物。由于分子间和分子内过程,涉及桥联和相邻碳原子的大多数双-苯并咪唑基喹喔啉信号的几种形式之间的自缔合,质子交换,构象和/或互变异构交换,且NMR光谱中的苯并咪唑片段变宽。苯并咪唑片段与分子的喹喔啉核心之间的共轭作用比喹喔啉衍生物(10c)与其噻二唑[ f ]-(17)和吡咯并[ a ]-(19)环化了衍生物,导致整个分子的平面度更大。
A new procedure was proposed for synthesis of quinoxaline derivatives by N-alkylation of 2,6-di-tert-butyl-4-(o-R-sulfonylaminophenylimino)-2,5-cyclohexadienones and subsequent intramolecular spiro-cyclization. A necessary condition for the reaction to occur is a high mobility of hydrogen in the N-methylene group, which is activated by electron-acceptor aroyl or two ethoxycarbonyl groups.
Garnovskii, A. D.; Lukova, O. A.; Alekseenko, V. A., Russian Journal of Inorganic Chemistry, 1992, vol. 37, p. 653 - 656
作者:Garnovskii, A. D.、Lukova, O. A.、Alekseenko, V. A.、Komissarov, V. N.、Litvinov, V. V.、Kharabaev, N. N.
DOI:——
日期:——
Olekhnovich, R. Ya.; Korobov, M. S.; Lyubchenko, S. N., Journal of general chemistry of the USSR, 1992, vol. 62, # 4.2., p. 740 - 747
作者:Olekhnovich, R. Ya.、Korobov, M. S.、Lyubchenko, S. N.、Sukholenko, E. V.、Ryskina, T. A.、et al.
DOI:——
日期:——
Olekhnovich, R. Ya.; Korobov, M. S.; Lyubchenko, S. N., Journal of general chemistry of the USSR, 1992, vol. 62, p. 740 - 747
作者:Olekhnovich, R. Ya.、Korobov, M. S.、Lyubchenko, S. N.、Sukholenko, E. V.、Ryskina, T. A.、et al.
DOI:——
日期:——
A new facile, efficient synthesis and structure peculiarity of quinoxaline derivatives with two benzimidazole fragments
作者:Vakhid A. Mamedov、Nataliya A. Zhukova、Victor V. Syakaev、Aidar T. Gubaidullin、Tat'yana N. Beschastnova、Dil'bar I. Adgamova、Aida I. Samigullina、Shamil K. Latypov
DOI:10.1016/j.tet.2012.10.045
日期:2013.1
A highly efficient and versatile method for the synthesis of quinoxalinederivatives with two benzimidazole fragments have been developed on the basis of the ring contraction of 3-(benzimidazo-2-yl)quinoxalin-2(1H)-one with 1,2-diaminobenzene and its various types of substituted and condensed derivatives. Owing to the inter- and intramolecular processes, involving self association, proton exchange
基于3-(苯并咪唑-2-基)喹喔啉-2(1 H)-与1,2-的环收缩,已开发出一种高效且通用的具有两个苯并咪唑片段的喹喔啉衍生物的合成方法。二氨基苯及其各种类型的取代和稠合衍生物。由于分子间和分子内过程,涉及桥联和相邻碳原子的大多数双-苯并咪唑基喹喔啉信号的几种形式之间的自缔合,质子交换,构象和/或互变异构交换,且NMR光谱中的苯并咪唑片段变宽。苯并咪唑片段与分子的喹喔啉核心之间的共轭作用比喹喔啉衍生物(10c)与其噻二唑[ f ]-(17)和吡咯并[ a ]-(19)环化了衍生物,导致整个分子的平面度更大。
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作者:S. V. Kurbatov、N. I. Vikrishchuk、V. I. Simakov、D. N. Kuznetsov、Yu. A. Zhdanov、L. P. Olekhnovich
DOI:10.1023/a:1012399922502
日期:——
A new procedure was proposed for synthesis of quinoxaline derivatives by N-alkylation of 2,6-di-tert-butyl-4-(o-R-sulfonylaminophenylimino)-2,5-cyclohexadienones and subsequent intramolecular spiro-cyclization. A necessary condition for the reaction to occur is a high mobility of hydrogen in the N-methylene group, which is activated by electron-acceptor aroyl or two ethoxycarbonyl groups.