1: H2, AcOH / 10percent Pd/C / ethanol / 60 °C 2: K2CO3, KI / butan-2-one / 17 h / Heating 3: 10percent HCl / 4 h / Heating 4: 1-ethyl-<3-(dimethylamino)propyl>carbodiimide hydrochloride / CH2Cl2 / 4 h / Ambient temperature View Scheme

1: 97 percent / K2CO3 / dimethylformamide / 6 h / 50 °C 2: 97 percent / N-chlorosuccinimide (NCS) / dimethylformamide / 2 h / 70 °C 3: 99 percent / NaOH, H2O / ethanol / 5 h / Heating 4: 1-ethyl-<3-(dimethylamino)propyl>carbodiimide hydrochloride / CH2Cl2 / 4 h / Ambient temperature View Scheme

1: 99 percent / NaOH, H2O / ethanol / 5 h / Heating 2: 1-ethyl-<3-(dimethylamino)propyl>carbodiimide hydrochloride / CH2Cl2 / 4 h / Ambient temperature View Scheme

1: 97 percent / N-chlorosuccinimide (NCS) / dimethylformamide / 2 h / 70 °C 2: 99 percent / NaOH, H2O / ethanol / 5 h / Heating 3: 1-ethyl-<3-(dimethylamino)propyl>carbodiimide hydrochloride / CH2Cl2 / 4 h / Ambient temperature View Scheme

1: K2CO3, KI / butan-2-one / 17 h / Heating 2: 10percent HCl / 4 h / Heating 3: 1-ethyl-<3-(dimethylamino)propyl>carbodiimide hydrochloride / CH2Cl2 / 4 h / Ambient temperature View Scheme

1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride in dichloromethane 4 h; Ambient temperature; Yield given;