1: hydrazine hydrate / Raney nickel / aq. ethanol / 5 h / Heating 2: 1.) conc. HCl, NaNO2 / 1.) <5 deg C, 2.) 1h, 80 deg C 3: K2CO3 / acetone / 6 h / Heating View Scheme

1: 1.) conc. HCl, NaNO2 / 1.) <5 deg C, 2.) 1h, 80 deg C 2: K2CO3 / acetone / 6 h / Heating View Scheme

potassium carbonate in acetone 6 h; Heating;