1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → 3-[4-(2-bromo-benzoyl)-piperazin-1-yl]-3-oxo-N-(5-phenyl-pyridin-2-yl)-propionamide

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Reaction Steps

DMAP (137 mg, 1.1 mmol) was added to 3-[4-(2-bromo-benzoyl)-piperazin-1-yl]-3-oxo-propionic acid (200 mg, 0.56 mmol) in DMF (2 mL) followed by EDCI (129 mg, 0.67 mmol) and HOBT (91 mg, 0.67 mmol). After 2 minutes, 5-phenyl-pyridin-2-ylamine (115 mg, 0.67 mmol) was added and stirring was continued at room temperature overnight. Cold water was then added and it was extracted with ethyl acetate. The organic layer was washed with brine, dried over Na2SO4, and concentrated under reduced pressure to afford 77 mg (27% yield) of 3-[4-(2-bromo-benzoyl)-piperazin-1-yl]-3-oxo-N-(5-phenyl-pyridin-2-yl)-propionamide. LC/MS [M+H]+: 507.1, 97.03%. 1H NMR (300 MHz, DMSO-d6): δ 10.8 (d, 1H), 8.7-8.6 (bs, 1H), 8.2-8.06 (m, 2H), 7.76-7.64 (m, 3H), 7.54-7.34 (m, 6H), 3.8-3.4 (m, 8H), 3.24-3.1 (m, 2H).

Provenance & Evidence