建立了通向带有两个通过两个萘-1,4-二烷基连接在5和7位的两个苯并[ a ]蒽单元的环烷的合成途径,并通过X射线结构分析证实了其结构。由于结构上的限制,两个萘基从平面度上变形,并将它们连接至苯并[ a ]蒽单元的键显着弯曲。环烷的紫外-可见光谱和荧光光谱与相应的单体多环芳烃7-(1-萘基)苯并[ a ]蒽的光谱相比发生了红移。
Improved Synthesis of Aryl-Substituted Anthracenes and Heteroacenes
作者:Guijie Li、Shaolin Zhou、Guowei Su、Yuanhong Liu、Peng George Wang
DOI:10.1021/jo7017334
日期:2007.12.1
[Graphics]A Bronsted acid-catalyzed highly efficient construction,of substituted arylanthracenes and heteroacenes is described, which is assumed to be initiated through the facile formation of a benzylic cation intermediate. This method offers several advantages in comparison with known aromatic cyclodehydration reactions such as high selectivities, mild reaction conditions, and easily accessible starting materials.
An Unusual Elbs-type Reaction Observed during a Study of the Cyclization of Ketones<sup>1,2</sup>
作者:Frank A. Vingiello、Alexej BoŘkovec、Walter Zajac