1: 85 percent / hydrazin hydrate (98 percent) / Raney nickel / dimethylformamide / 10 h / Heating 2: 65 percent / benzene / 8 h / Heating View Scheme

hydrazine hydrate; nickel in N,N-dimethyl-formamide 10 h; Heating;

1: 85 percent / hydrazin hydrate (98 percent) / Raney nickel / dimethylformamide / 10 h / Heating 2: 65 percent / benzene / 8 h / Heating View Scheme

1: 85 percent / hydrazin hydrate (98 percent) / Raney nickel / dimethylformamide / 10 h / Heating 2: 65 percent / benzene / 8 h / Heating 3: 55 percent / hydrazin hydrate (98 percent) / Pd-C (10 percent) / dimethylformamide / 12 h / Heating View Scheme