1: 77.7 percent / 30percent ammonium hydroxide / methanol / 10 h / Ambient temperature 2: pyridine / CH2Cl2 / Ambient temperature 3: ammonia / CH2Cl2 / 3 h / Ambient temperature View Scheme

1: pyridine / CH2Cl2 / Ambient temperature 2: ammonia / CH2Cl2 / 3 h / Ambient temperature View Scheme

in N,N-dimethyl-formamide 3 h; Ambient temperature;