1: 82 percent / N,N-dimethylaniline / 6 h / Heating 2: 1) OsO4, KJO4; 2) PPA / 1) ethyl acetate, water, 2 h, 2) heating, 20 min View Scheme

ammonium formate; palladium on activated charcoal in methanol 1.5 h; Heating;