1: 67 percent / HCl conc. / ethanol / 2 h / Heating 2: 1.) N2H4*H2O, 2.) pyridine / 1.) ethanol, heating, 3h, precipitate dissolved in CH3OH, heating 4h, 2.) 60 - 70 deg C, 30 min View Scheme

1: 1)KOH, 2)tetraethylammonium chloride / 1) methanol, 60 deg C, 10 - 15 min and methanol distilled out, 2) CHCl3, heating 1h 2: 1.) N2H4*H2O, 2.) pyridine / 1.) ethanol, heating, 3h, precipitate dissolved in CH3OH, heating 4h, 2.) 60 - 70 deg C, 30 min View Scheme

pyridine; hydrazine hydrate 1.) ethanol, heating, 3h, precipitate dissolved in CH3OH, heating 4h, 2.) 60 - 70 deg C, 30 min; Yield given. Multistep reaction;