Convenient Synthesis of Tetra- and Hexaarylanthracenes by Means of RuH<sub>2</sub>(CO)(PPh<sub>3</sub>)<sub>3</sub>-Catalyzed C−H Arylation of Anthraquinone with Arylboronates
A new method for the synthesis of multiarylanthracenes was developed by means of the RuH2(CO)(PPh3)(3)-Catalyzed arylation of anthraquinone with arylboronates. This method consists of short and straightforward sequences starting with an easily accessible anthraquinone and is applicable to the syntheses of various multiarylanthracenes including those bearing twisted backbones.
Efficient synthesis of 3,6,13,16-tetrasubstituted-tetrabenzo[<i>a</i>,<i>d</i>,<i>j</i>,<i>m</i>]coronenes by selective C–H/C–O arylations of anthraquinone derivatives
An efficient synthesis of tetrabenzo[a,d,j,m]coronene derivatives having alkyl and alkoxy substituents at the 3, 6, 13, and 16-positions was achieved based on the ruthenium-catalyzed coupling reactions of anthraquinone derivatives with arylboronates via C–H and C–O bond cleavage. The reaction sequence involving the arylation, carbonyl methylenation, and oxidative cyclization effectively provided various