Tuning the Electronic Properties of Acetylenic Fluorenes by Phosphaalkene Incorporation
作者:Yurii V. Svyaschenko、Andreas Orthaber、Sascha Ott
DOI:10.1002/chem.201503430
日期:2016.3.14
Versatile synthetic protocols for 2,7‐ and 3,6‐diacetylenic fluorene‐9‐ylidene phosphanes (F9Ps) were developed. Protodesilylation of trimethylsilyl‐protected acetylenic F9Ps affords terminal acetylenes that can be employed in Sonogashira and Glaser‐type C−C coupling reactions to give thienyl‐decorated and butadiyne‐bridged fluorene‐9‐ylidene phosphanes, respectively. As evidenced by UV/Vis spectroscopy
开发了用于2,7-和3,6-二乙炔芴-9-亚烷基膦(F9Ps)的通用合成方案。三甲基甲硅烷基保护的炔烃F9P的原甲硅烷基化可提供末端乙炔,可用于Sonogashira和Glaser型C-C偶联反应中,分别得到噻吩修饰的和丁二炔桥接的芴9-亚烷基膦。如UV / Vis光谱学和循环伏安法所证明,并从头算计算得到证实,F9Ps中P中心的存在可显着减少源自LUMO水平稳定的HOMO-LUMO分裂。乙炔取代图案的变化是影响光学和电子特性的另一种工具。而3,6-二取代的F9P在400 nm附近具有很强的吸收,主要是由于π–π *跃迁,2,