Palladium-assisted "aromatic metamorphosis" of dibenzothiophenes into triphenylenes.Two new palladium-catalyzed reactions of aromatic sulfur compounds enabled the conversion of dibenzothiophenes into triphenylenes in four steps.  2) palladium-catalyzed arylative ring opening of the sulfonium salt with a sodium tetraarylborate,  4) palladium-catalyzed intramolecular C-S/C-H coupling through electrophilic palladation. 
Palladium
Palladium-assisted "aromatic metamorphosis" of dibenzothiophenes into triphenylenes.Two new palladium-catalyzed reactions of aromatic sulfur compounds enabled the conversion of dibenzothiophenes into triphenylenes in four steps. 
palladium-catalyzed reactions
2) palladium-catalyzed arylative ring opening of the sulfonium salt with a sodium tetraarylborate, 
palladium-catalyzed arylative ring opening
4) palladium-catalyzed intramolecular C-S/C-H coupling through electrophilic palladation. 
palladium-catalyzed intramolecular C-S/C-H coupling