1: benzoylaminobenzene With tert.-butyl lithium in tetrahydrofuran; pentane T=-78°C; 2 h; 2: chloro-trimethyl-silane in tetrahydrofuran; pentane T=-78 - 20°C;

palladium diacetate; acetic acid; p-benozquinone T=70°C; Fujiwara-Moritani reaction; 2 h;

palladium diacetate; p-benozquinone in acetic acid T=70°C; 2 h;