sulfuric acid; potassium iodide; sodium nitrite 1.) 1 h, 2.) room temp., overnight; Yield given. Multistep reaction;

1: 80 percent / triphenylphosphine, palladium chloride, cuprous iodide, diethylamine / CH2Cl2 / 20 h / Ambient temperature 2: 78 percent / 40percent aq. methylamine / aq. ethanol / 2 h / Ambient temperature View Scheme