Benzoic Acid → HCID 59694170, compound

Participants

Reaction Steps

To a solution of N1-(1H-benzoimidazol-2-ylmethyl)-N1-(5,6,7,8-tetrahydro-quinolin-8-yl)-propane-1,3-diamine (166 mg, 0.50 mmol) in DMF (3 mL) was added 1-hydroxybenzotriazole hydrate (100 mg, 0.74 mmol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (142 mg, 0.74 mmol), and benzoic acid (73 mg, 0.59 mmol). The reaction mixture was stirred overnight at room temperature. Then it was diluted with ethyl acetate (40 mL) and water (25 mL). The organic layer was washed with saturated NaHCO3 (30 mL) and brine (30 mL), dried (Na2SO4), filtered, concentrated, and dried in vacuo to afford a yellow oil. Purification by radial chromatography on silica gel (1 mm plate; using NH4OH/CH3OH/CH2Cl2; 1:1:100→1:3:100) afforded the product as a yellow foam (80 mg, 37%). 1H NMR (CDCl3) δ 1.68-1.74 (m, 4H), 2.02-2.04 (m, 1H), 2.22 (m, 1H), 2.62-2.69 (m, 2H), 2.81 (t, 1H, J=4.8 Hz), 2.84-2.90 (m, 2H), 3.34-3.38 (m, 1H), 3.55-3.59 (m, 1H), 4.01-4.05 (m, 2H), 7.10-7.18 (m, 4H), 7.32 (t, 2H, J=7.8 Hz), 7.42-7.48 (m, 2H), 7.59 (dd, 2H, J=8.0, 1.5 Hz), 7.65 (br s, 1H), 8.43 (dd, 1H, J=3.9, 1.2 Hz).

Provenance & Evidence