sodium hydroxide in water T=20°C; 2 h;

potassium carbonate in dimethyl sulfoxide T=110°C; 24 h;

1: 1.) phenyl-lithium, 2.) lithium naphthalenide / 1.) diethyl ether, THF, -78 deg C, 30 min, 2.) -78 deg C, 2 h 2: 91 percent / H2O / diethyl ether; tetrahydrofuran / Ambient temperature; reactions with other electrophiles View Scheme

1: NaH / dimethylformamide 2: 30 percent / Bu3SnH; AIBN / benzene / Heating View Scheme