Triethylamine → 1-Naphthalenecarboxamide, 6-[(2-amino-4-pyrimidinyl)oxy]-N-[4-fluoro-3-(trifluoromethyl)phenyl]-

Participants

Reaction Steps

To a suspension of 2.58 g (9.2 mMol) 6-(2-amino-pyrimidin-4-yloxy)-naphthalene-1-carboxylic acid in 50 ml DMF, 12.8 ml (92 mMol) Et3N, 490 mg (4.0 mMol) DMAP, 1.41 ml (11 mMol) 4-fluoro-3-trifluoromethyl-aniline and finally 11 ml propylphosphonic anhydride (50% in DMF; 19 mMol) are added. The mixture is stirred for 1 h and then concentrated in vacuo. The residue is diluted with water and EtOAc, the aq. phase is separated off and extracted twice with EtOAc. The organic layers are washed with water and brine, dried (Na2SO4) and concentrated. Column chromatography (SiO2; CH2Cl2/EtOAc 2:1→1:1→1:2) and re-crystallization from CH3CN gives the title compound: m.p.: 205° C.

Provenance & Evidence