Perylene Synthesis by the Parallel Cycloaromatization of Adjacent Enediynes
摘要:
[GRAPHICS]As part of an investigation into new synthetic routes to poly(peri-naphthalene), the synthesis and cycloaromatization of tetraethynylbiphenyls is described. The temperature dependent cyclization of biphenyls containing unsubstituted alkynes provides the desired perylene in good yield.
Tellurium-Mediated Cycloaromatization of Acyclic Enediynes under Mild Conditions
作者:Chad A. Landis、Marcia M. Payne、David L. Eaton、John E. Anthony
DOI:10.1021/ja0389467
日期:2004.2.1
cycloaromatization product. We have developed conditions that form sodium telluride from inexpensive tellurium metal in situ, and that also perform the desilylation of silylated arenediynes in the same process. Under our conditions, we are able to perform desilylation and cycloaromatization at temperatures as low as 40 degrees C and on a scale as large as 5 g in standard laboratoryglassware.
无环烯二炔的环芳构化通常需要非常高的温度(> 160 摄氏度)和稀释条件才能以合成有用的产率进行。这些条件阻碍了反应产量,抑制了该反应在材料的大规模生产中的应用。碲化钠与无环芳二炔反应生成相应的碲碱,在温和加热下会挤出 Te 度,生成环芳构化产物。我们已经开发出从廉价的碲金属原位形成碲化钠的条件,并在同一过程中对甲硅烷基化芳烃进行脱甲硅烷基化。在我们的条件下,我们能够在低至 40 摄氏度的温度和大至 5 克的标准实验室玻璃器皿中进行脱甲硅烷基化和环芳构化。
Radical-Induced Cycloaromatization: Routes to Fluoranthenes and Acephenanthrylenes
作者:John E. Anthony、John L. Scott、Sean R. Parkin
DOI:10.1055/s-2003-43332
日期:——
The cycloaromatization of easily-prepared arenediynes is an efficient route to fused aromatic systems, but the requirement of very high temperatures to induce this reaction limits both scal- ability and generality. We demonstrate that cycloaromatization can be induced by addition of a radical species to an arenediyne unit. Tethering this radical to the enediyne leads to the formation of larg- er fused