Cyanoacetic acid → 2-Cyano-N-(2,4-dimethoxybenzyl)-N-[2-(3-fluorobenzoyl)-4-methoxyphenyl]acetamide

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Reaction Steps

To a solution of cyanoacetic acid (43.0 mg, 0.511 mmol) in 1 mL of dichloromethane at room temperature was added PCl5 (106 mg, 0.511 mmol). The mixture was heated to reflux for 10 minutes. A solution of {2-[(2,4-dimethoxybenzyl)amino]-5-methoxyphenyl}(3-fluorophenyl)methanone (101 mg, 0.255 mmol) in 1 mL dichloromethane was added, and the reaction was refluxed for an additional 1.5 hours. The reaction was partitioned between EtOAc and saturated NaHCO3 solution, and the organic layer was washed with brine, dried over Na2SO4, filtered, and concentrated in vacuo. The titled product was isolated as a yellow foam (117 mg, 99% yield) which was used in the next step without further purification. Proton NMR for the product was consistent with the titled compound. ESI+ MS: 463.2 [M+H]+.

Provenance & Evidence