1: With sodium carbonate; 1-n-butyl-3-methylimidazolium tetrafluoroborate; tetrakis(triphenylphosphine) palladium(0) in water; N,N-dimethyl-formamide T=110°C; Suzuki-Miyaura cross-coupling; 2 h; 2: With trifluoroacetic acid in dichloromethane 1 h; Further stages.;

1,1'-bis-(diphenylphosphino)ferrocene; 1,1'-bis(diphenylphosphanyl)ferrocenenickel(II) chloride; potassium iodide in diethyl ether; toluene T=80°C; 10 h;

1: 4-bromo-phenol With di-isopropyl azodicarboxylate; triphenylphosphine; Wang resin in tetrahydrofuran T=20°C; 2: 4-ethylbenzeneboronic acid With sodium carbonate; tetrakis(triphenylphosphine) palladium(0) in ethylene glycol dimethyl ether; water T=80°C; Suzuki reaction; 3: With trifluoroacetic acid in dichloromethane 0.166667 h;

potassium carbonate; palladium on activated charcoal