1: 1.) 82percent hydrazine hydrate, 2.) KOH / 1.) diethylene glycol, reflux, 2.) 14 h, reflux 2: 78 percent / conc. H2SO4 / 12 h / Heating View Scheme

1: 1.) 82percent hydrazine hydrate, 2.) KOH / 1.) diethylene glycol, reflux, 2.) 14 h, reflux 2: 78 percent / conc. H2SO4 / 12 h / Heating 3: 1.) lithium alanate, 2.) aq.H2SO4 / 1.) THF, 2 h, reflux, 2.) methanol 4: 82 percent / HBr / 110 - 130 °C View Scheme