Ammonia → HCID 59497258, compound

Participants

Reaction Steps

To the THF (1.0 mL) suspension of 3-(3-Naphthalen-1-ylmethyl-2-oxo-2,3-dihydro-benzimidazol-1-yl)-propionic acid (50 mg, 0.14 mmol) at room temperature are added ammonia 0.5 M solution in dioxane (1.4 mL, 0.72 mmol) and 1-hydroxybenzotriazole (94 mg, 0.7 mmol). Then N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide (118 mg, 0.61 mmol) is added in small portions. The reaction mixture is stirred for 20 hr and then water (5 mL) is added and the mixture is extracted with EtOAc (3×10 mL). The organic layers are combined, dried over MgSO4 and concentrated to give crude product. Purification by preparative TLC using 5% MeOH in CH2Cl2 affords 37 mg (74%) of 3-(3-Naphthalen-1-ylmethyl-2-oxo-2,3-dihydro-benzimidazol-1-yl)-propionamide. LCMS (ESMS): m/z 346.12 (M+H+).

Provenance & Evidence