hydrogen cation in methanol Heating;

1: 70 percent / conc. HCl / methanol / 2 h / Heating 2: 1.) NaH / 1) acetonitrile, reflux, 1 h; 2) acetonitrile, reflux, 2 h 3: 49 percent / Bu3SnH, AIBN / toluene / 6 h / Heating View Scheme