sodium hydroxide; potassium hexacyanoferrate(III) in water; benzene 1 h; Ambient temperature;

1: 57 percent / NaH (50percent in oil) / dimethylformamide / 0.5 h / Ambient temperature 2: 28 percent / 10percent NaOH / dimethylsulfoxide / 1 h / Ambient temperature 3: 82 percent / 50percent NaOH / dimethylsulfoxide / 1 h / Ambient temperature 4: 72 percent / K3Fe(CN)6, 50percent NaOH / H2O; benzene / 1 h / Ambient temperature View Scheme

1: 82 percent / 50percent NaOH / dimethylsulfoxide / 1 h / Ambient temperature 2: 72 percent / K3Fe(CN)6, 50percent NaOH / H2O; benzene / 1 h / Ambient temperature View Scheme

1: 28 percent / 10percent NaOH / dimethylsulfoxide / 1 h / Ambient temperature 2: 82 percent / 50percent NaOH / dimethylsulfoxide / 1 h / Ambient temperature 3: 72 percent / K3Fe(CN)6, 50percent NaOH / H2O; benzene / 1 h / Ambient temperature View Scheme