1: 85 percent / K3Fe(CN)6, 50percent NaOH / H2O; benzene / 1 h / Ambient temperature 2: 79 percent / 50percent NaOH / dimethylsulfoxide / 3 h / Ambient temperature View Scheme

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