Synthesis and Electronic Properties of 3-Acceptor-Substituted and 3,7-Bisacceptor-Substituted Phenothiazines
作者:Markus Sailer、Michael Nonnenmacher、Thomas Oeser、Thomas J. J. Müller
DOI:10.1002/ejoc.200500539
日期:2006.1
3-Acceptor-substituted and 3,7-bisacceptor-substituted phenothiazines can be synthesized in moderate to excellent yields through Suzuki cross-coupling reactions between phenothiazin-3-yl pinacolyl boronates or phenothiazin-3,7-diyl bis(pinacolyl boronates) and electron-deficient (hetero)aryl halides. The electronic properties of (hetero)aryl-substituted N-methyl phenothiazines (UV/Vis absorption, fluorescence
通过吩噻嗪-3-基频哪醇硼酸酯或吩噻嗪-3,7-二基双(频哪醇硼酸酯)和吩噻嗪-3,7-二基双(频哪醇硼酸酯)和缺电子(杂)芳基卤化物。(杂)芳基取代的 N-甲基吩噻嗪的电子特性(UV/Vis 吸收、荧光、氧化还原电位)可以与前沿分子轨道的计算能量相关。硝基取代衍生物显示出电子两性行为,显示出可逆氧化和可逆还原。吩噻嗪基对(2,5-二硝基)亚苯基桥连二元组 13 的 X 射线结构分析揭示了分子之间的供体-受体相互作用。吡啶基和嘧啶基衍生物发出荧光,量子产率 (Φf) 高达 49%,可被视为具有氧化还原活性的荧光团。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)