Short and Efficient Synthesis of Coronene Derivatives via Ruthenium-Catalyzed Benzannulation Protocol
作者:Hung-Chin Shen、Jhih-Meng Tang、Hsu-Kai Chang、Chia-Wei Yang、Rai-Shung Liu
DOI:10.1021/jo0512599
日期:2005.11.1
TpRuPPh3(CH3CN)2PF6 (3 mol %) was very active in catalytic benzannulation of 1-phenyl-2-ethynylbenzenes in dichloroethane (60 °C, 36 h) to afford phenanthrene in 95% yield. This method is applicable to the synthesis of various polycyclic aromatic hydrocarbons via two- and four-fold benzannulations, including various substituted coronene derivatives (53−86% yields) using this catalyst at a moderate