hydrogen; palladium on activated charcoal in methanol P=760 Torr; 6 h; Ambient temperature;

sodium hydroxide; water 1 h; Heating / reflux;

1: 1.) cc. H2SO4; 2.) NH2OH / 1.) H2O, 70 deg C, 1.5 h; 2.) H2O, 12 h, r.t., pH=8-9 2: H2 / 10percent Pd-C / methanol / 6 h / 760 Torr / Ambient temperature View Scheme