312612-69-4Relevant articles and documents
Pd catalyzed insertion of alkynes into cyclic diaryliodoniums: A direct access to multi-substituted phenanthrenes
Wu, Yongcheng,Wu, Fuhai,Zhu, Daqian,Luo, Bingling,Wang, Haiwen,Hu, Yumin,Wen, Shijun,Huang, Peng
, p. 10386 - 10391 (2015/10/28)
Cyclic diaryliodoniums remain unexplored compared to linear iodoniums. In our current work, internal alkynes were for the first time applied to react with cyclic iodoniums, catalyzed by Pd, resulting in a [4 + 2] benzannulation. Our work offers a new strategy to synthesize multi-substituted phenanthrene derivatives which are not easily accessed by conventional methods.
Chromium-mediated synthesis of polycyclic aromatic compounds from halobiaryls
Kanno, Ken-Ichiro,Liu, Yuanhong,Iesato, Atsushi,Nakajima, Kiyohiko,Takahashi, Tamotsu
, p. 5453 - 5456 (2007/10/03)
(Chemical Equation Presented) Reaction of 2,2′-dihalobiphenyl with butyllithium followed by the addition of chromium(III) chloride and alkynes afforded the corresponding phenanthrene derivatives via formal [4 + 2] cycloaddition. A variety of alkynes could be used for this reaction, such as alkyl, aryl, silyl, and alkoxycarbonyl alkynes. Repetitive process of the reaction gave more extended polycyclic compounds such as benzo[g]chrysene and azacyclopentaphenalene derivatives.
