4-Chloro-3-(trifluoromethyl)aniline → 4-Pyrimidinamine, 2-chloro-N-[4-chloro-3-(trifluoromethyl)phenyl]-5-fluoro-

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In like manner to the preparation of 2-chloro-5-fluoro-N4-[3-(1H-tetrazol-5-yl)phenyl]-4-pyrimidineamine the reaction of 2,4-dichloro-5-fluoropyrimidine with 4-chloro-3-trifluoromethylaniline gave 2-chloro-N4-(4-chloro-3-trifluoromethylphenyl)-5-fluoro-4-pyrimidineamine. 1H NMR (CDCl3): δ 8.15 (d, 1H, J=2.1 Hz), 7.96 (d, 1H, J=3 Hz), 7.91 (dd, 1H, J=2.7 Hz and 8.7 Hz), 7.53 (d, 1H, J=8.1 Hz), 7.06 (bs, 1H); 19F NMR (CDCl3): −17892 and −44402; LCMS: purity: 93%; MS (m/e): 326 (M+).

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