hydrogen; palladium on activated charcoal in methanol; benzene P=2325.2 - 2850.2 Torr; 3 h;

1: 98 percent / H2 / 10percent Pd-C / methanol; benzene / 3 h / 2325.2 - 2850.2 Torr 2: 1.) aq. NaNO2, conc. HCl, 2.) Cu2O / 1.) acetone, 0 deg C, 2.) 40 to 43 deg C, 30 min 3: 2.) AcOH, conc. HCl / 1.) sulfolane, 115 to 120 deg C, 80 min, 2.) H2O, 85 to 90 deg c, 12 h View Scheme