With  sodium methylate in  methanol  1.) r.t., 2 h; 2.) in refrigerator, 2 h;   

Multi-step reaction with 4 steps 1: 1.) silver trifluoromethanesulfonate, 2,4,6-trimethylpyridine, molecular sieves type 4A / 1.) dichloromethane, r.t., 1 h; 2.) dichloromethane, 4 h2: 89.9 percent / 60 percent acetic acid / H2O / 1.5 h / 85 °C3: 1.) 85 percent hydrazine hydrate / 1.) ethanol, 70 deg C, 15 min; 2.) pyridine, 90 deg C, 20 min4: 88.9 percent / 0.1 M sodium methoxide / methanol / 1.) r.t., 2 h; 2.) in refrigerator, 2 h