Tetra-tert-butyltetraoxa[8]circulene and Its Unusual Aggregation Behaviour
作者:Theis Brock-Nannestad、Christian B. Nielsen、Magnus Schau-Magnussen、Peter Hammershøj、Theis K. Reenberg、Asger B. Petersen、Denis Trpcevski、Michael Pittelkow
DOI:10.1002/ejoc.201100966
日期:2011.11
first example of the synthesis of a tetraoxa[8]circulene with only four substituents by means of BF 3 ·OEt 2 mediated tetramerisation of tert-butyl-1,4-benzoquinone. Two of the four regioisomers of tetra-tert-butyltetraoxa[8]circulene have been isolated and characterised by single-crystal X-ray analysis. It was found that the tetra-tert-butyltetraoxa[8]circulenes aggregate in solution through a cooperative
我们描述了通过 BF 3 ·OEt 2 介导的叔丁基-1,4-苯醌四聚作用合成只有四个取代基的四氧杂[8]环烯的第一个例子。四叔丁基四氧杂 [8] 环烯的四种区域异构体中的两种已被分离出来,并通过单晶 X 射线分析进行了表征。发现四叔丁基四氧杂[8]环烯在溶液中通过协同聚合机制聚集,尽管用大叔丁基取代基官能化。