1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → N-(4-tert-butyl-phenyl)-2,6-difluoro-nicotinamide

Participants

Reaction Steps

A solution of 2,6-difluoropyridine-3-carboxylic acid (3.2 g, 20 mmol), t-butylaniline (3.0 g, 20 mmol), HOBt (2.6 g, 20 mmol), EDAC (8 g, 40 mmol), and DIEA (8 mL) in CH2Cl2 (80 mL) was stirred at RT for 1 h. The mixture was washed with aq. NaHCO3 and brine. The organic solution was dried over Na2SO4 and concentrated in vacuo. The residue was purified via flash chromatography on silica (Hex:EtOAc=4:1) to give a light yellow flaky crystal as desired product.

Provenance & Evidence