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