hydrogen; palladium on activated charcoal in perchloric acid; ethanol Ambient temperature;

Multi-step reaction with 2 steps 1: 1.) H2; 2.) NaBH4 / 1.) Adams catalyst / 1.) EtOH, 24 deg C, 2 h; 2.) RT2: Hg(OAc)2-EDTA / aq. acetic acid / 1.5 h / Heating