1: hydrogen / 10percent Pd on charcoal / methanol / 760 Torr / Ambient temperature 2: dicyclohexylcarbodiimid / dimethylformamide / Ambient temperature View Scheme

1: hydrogen / 760 Torr 2: hydrogen / 10percent Pd on charcoal / methanol / 760 Torr / Ambient temperature 3: dicyclohexylcarbodiimid / dimethylformamide / Ambient temperature View Scheme

1: 47 percent / acetic anhydride / 18 h / Ambient temperature 2: dicyclohexylcarbodiimid / dimethylformamide / Ambient temperature View Scheme

1: 85 percent / 0.5 M ethanolic sodium hydroxide / 24 h / Ambient temperature 2: 47 percent / acetic anhydride / 18 h / Ambient temperature 3: dicyclohexylcarbodiimid / dimethylformamide / Ambient temperature View Scheme

dicyclohexyl-carbodiimide in N,N-dimethyl-formamide Ambient temperature; Yield given;