Diisopropylethylamine → HCID 69714729, compound

Participants

Reaction Steps

A solution of 4-(1-benzyl-5-chloro-2-oxo-3-pyridinyl)-L-phenylalanine methyl ester hydrochloride (100 mg, 0.23 mmol), 2-chloro-6-methylbenzoic acid (47 mg, 0.28 mmol), DIEA (200 μL, 1.2 mmol) and HBTU (133 mg, 0.35 mmol) in DMF (2 mL) was stirred at room temperature for 18 hr. The mixture was concentrated, the residue was dissolved in ethyl acetate (15 mL), was washed with 0.5 N HCl (1×5 mL), sat. NaHCO3 (1×5 mL), brine (1×5 mL) and was dried (MgSO4). The residue obtained upon evaporation was chromatographed on 25 g of silica gel, eluting with 45:55 ethyl acetate:hexane to give 4-(1-benzyl-5-chloro-2-oxo-3-pyridinyl)-N-[(2-chloro-6-methylphenyl)carbonyl]-L-phenylalanine methyl ester (74 mg, 58%). Obs. Mass 397.1313. Calcd. Mass 397.1320 (M+H)

Provenance & Evidence