1: tetrakis(triphenylphosphine) palladium(0); N,N'-dimethyl-barbituric acid / dichloromethane / Reflux 2: methanol / 1 h / 20 °C 3: palladium 10 on activated carbon; hydrogen / methanol / 10 h / 20 °C View Scheme

1: tetrakis(triphenylphosphine) palladium(0); N,N'-dimethyl-barbituric acid / dichloromethane / Reflux 2: methanol / 1 h / 20 °C 3: palladium 10 on activated carbon; hydrogen / methanol / 10 h / 20 °C View Scheme