Triethylamine → HCID 67954579, compound

Participants

Reaction Steps

To a stirred solution of 1,6-dihydro-6-oxo-2-phenyl-1-(phenylmethyl)-5-pyrimidinecarboxylic acid (i.e. the product from Step C) (1.00 g, 3.26 mmol) in dichloromethane (30 mL) at 0° C., was added oxalyl chloride (823 mg, 6.53 mmol) followed by a catalytic amount of N,N-dimethylformamide (2 drops). The reaction mixture was allowed to warm to room temperature and stir for 1 h. Then the reaction mixture was concentrated under reduced pressure. To the resulting residue was added dichloromethane (30 mL) and 1,3-cyclohexanedione (440 mg, 3.90 mmol), followed by triethylamine (990 mg, 9.80 mmol), and the reaction mixture was stirred at room temperature for 30 min Saturated aqueous ammonium chloride solution was added to the reaction mixture, which was then extracted with dichloromethane. The organic layer was dried (MgSO4) and concentrated under reduced pressure. The residue was purified by column chromatography eluting with 50% ethyl acetate in hexanes to afford the title product as a white solid (500 mg).

Provenance & Evidence