1: 95 percent / conc. H2SO4, KNO3 / 0.5 h / -5 - 0 °C 2: H2 / 10percent Pd/C / methanol / Ambient temperature 3: methanol / 21 h / Ambient temperature View Scheme

1: H2 / 10percent Pd/C / methanol / Ambient temperature 2: methanol / 21 h / Ambient temperature View Scheme

in methanol 21 h; Ambient temperature; Yield given;