Triethylamine → N-{4-[2-(Butyroylamino)pyridin-4-yl]oxyphenyl}-N'-cyclopropylurea

Participants

Reaction Steps

Phenyl N-{4-[2-(butyroylamino)pyridin-4-yl]oxyphenyl}carbamate (0.116 g), cyclopropylamine (0.034 g), triethylamine (0.041 ml) and tetrahydrofuran (10 ml) were heated together in a sealed tube at 100° C. for 1 hour. NH type silica gel was added to the reaction solution, the solvent was distilled off under reduced pressure and the reaction product was adsorbed onto the silica gel. The silica gel was charged into a dry column packed with NH type silica gel, and column purification was performed (ethyl acetate). The solvent was distilled off under reduced pressure, ethyl acetate and hexane were added to the residue, and the precipitated solid was filtered out to obtain 20 mg of the target substance as a white solid.

Provenance & Evidence