hydrogen; ammonium formate; palladium on activated charcoal in methanol Heating;

1: 1) NEt3, TiCl4, 2) H2, Raney nickel / 1) cyclohexane, CH2Cl2, 2) EtOH, 5 bar, RT, 10 d 2: 94 percent / H2, ammonium formate / 10percent Pd-C / methanol / Heating View Scheme