ammonium hydroxide in N,N-dimethyl-formamide 48 h; Ambient temperature;

1: dimethylformamide / 12 h / 60 °C 2: 28percent ammonium hydroxide / dimethylformamide / 48 h / Ambient temperature View Scheme

1: 46 percent / dimethylformamide / 12 h / Ambient temperature 2: 85 percent / dicyclohexylcarbodiimide / dimethylformamide / 48 h / Ambient temperature 3: 80 percent / 28percent ammonium hydroxide / dimethylformamide / 48 h / Ambient temperature View Scheme

1: 85 percent / dicyclohexylcarbodiimide / dimethylformamide / 48 h / Ambient temperature 2: 80 percent / 28percent ammonium hydroxide / dimethylformamide / 48 h / Ambient temperature View Scheme