potassium fluoride; sodium hydride in N,N-dimethyl-formamide 24 h; Ambient temperature;

potassium tert-butylate in tert-butyl alcohol; benzene 3 h; Heating;

1: 87 percent / t-BuOK / 2-methyl-propan-2-ol; benzene / 3 h / Heating 2: 95 percent / dichloro(1,5-cyclooctadiene)palladium(II) / acetonitrile / 24 h / Ambient temperature View Scheme