diphenylamine; tetrakis(triphenylphosphine) palladium(0) in tetrahydrofuran; methanol; water; ethyl acetate; toluene

1: pyrene; 1,3-dibromo-5,5-dimethyl-hydantoin in dichloromethane T=20°C; 1 h; 2: diphenylamine With tri-tert-butyl phosphine; palladium diacetate; caesium carbonate in o-xylene T=120°C; Buchwald-Hartwig Coupling; 48 h; Overall yield = 68 percent; Overall yield = 205 mg;

tris-(dibenzylideneacetone)dipalladium(0); sodium t-butanolate in toluene T=110°C; Buchwald-Hartwig coupling; Inert atmosphere;