Triethylamine → HCID 57743093, compound

Participants

Reaction Steps

To a solution of 2-aminonicotinaldehyde x282 (8.19 mmol, 1 eq, 1 g) in 10 ml of EtOH, is added ethyl 3-(aminomethyl)hexanoate hydrochloride x31 (9.83 mmol, 1.2 eq, 2.06 g) and the resulting solution is stirred at room temperature for 1 h30. Then, triethylamine (9.0 mmol, 1.1 eq, 909 mg) is added and the mixture is stirred during 0.5 hour. Sodium borohydride is then added (9.83 mmol, 1.2 eq, 372 mg). The resulting mixture is stirred at room temperature for 20 hours, heated at 55° C. for 21 hours and then overnight at room temperature. Volatiles are removed under vacuum and CH2Cl2 (50 ml) and water (25 ml) are added. The organic layer is washed with water (25 ml) and dried over MgSO4. After filtration, volatiles are removed under reduced pressure. The crude product is purified by chromatography on silicagel (CH2Cl2/MeOH/NH4OH 98/2/0.2 (v/v/v)) and recrystallized in AcOEt to afford 1-[(2-aminopyridin-3-yl)methyl]-4-propylpyrrolidin-2-one 230 as a white solid (152 mg).

Provenance & Evidence