Coronene and related polycyclic aromatic hydrocarbons (PAHs) have received significant interest over recent decades due to the development of liquid crystals and organic semiconducting materials. The ring assembly by a domino reaction of fluorinated allenes (1,2‐propadienes) has facilitated the synthesis of these π‐extended molecules. The domino reaction of 1,1‐difluoroallenes under indium catalysis afforded π‐extended aryne precursors. The Diels—Alder reactions of the arynes, followed by aromatization and aryl—aryl coupling successfully provided PAHs including ‘half HBCs’ (hexabenzocoronenes). More information can be found in the Full Paper by Junji Ichikawa et al. on page 1384 in Issue 8, 2020 (DOI: 10.1002/asia.202000069).

中文翻译：

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封面功能：氟化菲林作为前驱体：基于多米诺环组装的PAH合成，使用1,1-二氟丙二烯（Chem。Asian J. 8/2020）

由于液晶和有机半导体材料的发展，在最近的几十年中，并苯和相关的多环芳烃（PAH）引起了人们的极大兴趣。氟化烯（1,2-丙二烯）的多米诺反应引起的环组装促进了这些π-扩展分子的合成。1,1-二氟丙二烯在铟催化下的多米诺反应提供了π-延伸的芳烃前体。芳烃的狄尔斯-阿尔德反应，然后进行芳构化和芳基-芳基偶联，成功地提供了包括“半六溴代六丁烯”在内的多环芳烃。有关更多信息，请参见Ichikawa等人的论文全文。就在第8年，2020年1384页（：10.1002 / asia.202000069 DOI）。