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Synthesis and Chiroptical Properties of Quinoxaline‐Fused Polyaza[5]–[7]helicenes with Orange‐Color CPL Emissions
Helvetica Chimica Acta ( IF 1.5 ) Pub Date : 2021-02-24 , DOI: 10.1002/hlca.202100016 Takashi Otani 1 , Takuma Sasayama 2 , Masashi Horiuchi 2 , Shunnosuke Okauchi 1 , Hidetoshi Kawai 3 , Maho Kitahara 4 , Yoshitane Imai 4 , Takanori Shibata 5
Helvetica Chimica Acta ( IF 1.5 ) Pub Date : 2021-02-24 , DOI: 10.1002/hlca.202100016 Takashi Otani 1 , Takuma Sasayama 2 , Masashi Horiuchi 2 , Shunnosuke Okauchi 1 , Hidetoshi Kawai 3 , Maho Kitahara 4 , Yoshitane Imai 4 , Takanori Shibata 5
Affiliation
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We achieved a two‐type synthesis of quinoxaline‐fused polyaza[5]‐ and [7]helicenes through consecutive N−H/C−H coupling with a hypervalent iodine reagent as a key reaction. By fusing electron‐deficient quinoxaline, these polyazahelicenes constitute an efficient donor‐acceptor type of molecule with absorption edges that reach up to approximately 650 nm. Evaluating the chiroptical properties reveals that the polyazahelicene exhibits a rare orange circularly polarized glow with a luminescence dissymmetry factor (glum value) of 0.003.
中文翻译：
具有橙色CPL排放的喹喔啉融合的聚氮杂[5] – [7]螺旋烯的合成和手性性质
我们通过连续的NH / CH偶联以及高价碘试剂作为关键反应，实现了喹喔啉融合的聚氮杂[5]-和[7]螺旋的两种合成。通过融合缺乏电子的喹喔啉，这些聚氮杂苯并三烯构成了一种高效的供体-受体类型的分子，其吸收边可达约650 nm。对手性的评价表明，聚叠氮烯具有罕见的橙色圆偏振光，其发光不对称系数（g lum值）为0.003。
更新日期：2021-04-14
中文翻译：
具有橙色CPL排放的喹喔啉融合的聚氮杂[5] – [7]螺旋烯的合成和手性性质
我们通过连续的NH / CH偶联以及高价碘试剂作为关键反应，实现了喹喔啉融合的聚氮杂[5]-和[7]螺旋的两种合成。通过融合缺乏电子的喹喔啉，这些聚氮杂苯并三烯构成了一种高效的供体-受体类型的分子，其吸收边可达约650 nm。对手性的评价表明，聚叠氮烯具有罕见的橙色圆偏振光，其发光不对称系数（g lum值）为0.003。
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