1: in N,N-dimethyl-formamide T=20°C; Suzuki coupling; 0.0833333 h; 2: With tetrakis(triphenylphosphine) palladium(0); K3PO4*3H2O in water; N,N-dimethyl-formamide T=100°C; Suzuki coupling; 18 h; Inert atmosphere;

1.1: potassium carbonate / acetone / 5 h / Reflux 2.1: N,N-dimethyl-formamide / 0.08 h / 20 °C 2.2: 18 h / 100 °C / Inert atmosphere View Scheme