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

1: 83 percent / 50percent NaOH / dimethylsulfoxide / 1 h / Ambient temperature 2: 82 percent / K3Fe(CN)6, 50percent NaOH / H2O; benzene / 1 h / Ambient temperature View Scheme

n-Pentyl nitrite; toluene-4-sulfonic acid Heating; Yield given;