New Architectures of Polycyclic Aromatic Compounds

这项研究的重点是开发合成螺旋烯的方法。通过烯-烯的自由基环化反应，合成了一系列具有螺旋扭曲的4，5-二取代菲衍生物、螺烯及其相关的非平面多环芳烃。烯炔-烯的热分解也将被用来合成桥联的双(苯并荧烯)，而桥联双(苯并荧烯)又将作为合成4族金属的ANSA-茂金属配合物的前驱体。后者具有潜在的烯烃聚合用途。凭借这一奖项，有机和高分子化学计划支持西弗吉尼亚大学化学系王功刚博士的研究。王博士将专注于开发合成具有螺旋扭曲的多环芳烃(螺旋烯)的方法学。螺旋烯本质上是手性的，形成了一类具有有趣的光学和电学性质的材料。这项工作的更广泛影响是在材料科学领域以及不对称催化领域。此外，该项目为培训本科生，特别是那些来自代表人数不足的人群的本科生和研究生提供了一个极好的工具。

The focus of this research involves the development of synthetic methods for the production of helicenes. A variety of 4,5-disubstituted phenanthrene derivatives, helicenes and related nonplanar polycyclic aromatic hydrocarbons possessing a helical twist will be prepared via the radical cyclization reactions of enyne-allenes. Thermolysis of enyne-allenes will also be used to synthesize bridged bis(benzofluorene), which, in turn, will serve as precursors for the production of ansa-metallocene complexes of group 4 metals. The latter have potential use for olefin polymerization.With this award, the Organic and Macromolecular Chemistry Program is supporting the research of Dr. Kung K. Wang in the Department of Chemistry at West Virginia University. Dr. Wang will focus his work on developing methodology for the synthesis of polycyclic aromatic hydrocarbons possessing a helical twist (helicenes). The helicenes are inherently chiral and form a class of materials having interesting optical and electronic properties. The broader impact of the work is in the area of materials science as well as in the field of asymmetric catalysis. Further, the project presents an excellent vehicle for the training of both undergraduate students, especially those from underrepresented populations, and graduate students.