1: 58.7 percent / Et3N / dimethylformamide / 0.5 h 2: 1.) pyridine, 2.) 0.1N NaOMe / 1.) 110 deg C, 18 h, 2.) MeOH View Scheme

pyridine; sodium methylate 1.) 110 deg C, 18 h, 2.) MeOH; Yield given. Multistep reaction;

1: 91.3 percent / SOCl2 / 0.5 h / Heating 2: 79.3 percent / dimethylformamide / 12 h / 100 °C 3: 98.8 percent / hydrazine hydrate / aq. ethanol / 1 h / Heating View Scheme