2,4-Dichloro-5-fluoropyrimidine → 2-chloro-N4-(3,5-dimethyl-4-methoxyphenyl)-5-fluoro-4-pyrimidineamine

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In a manner analogous to the preparation of N4-(3,4-ethylenedioxyphenyl)-N2-(3-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine, the reaction of 3,5-dimethyl-4-methoxyaniline (400 mg, 2.6 mmol) and 2,4-dichloro-5-fluoropyrimidine (200 mg, 1.2 mmol) gave 2-chloro-N4-(3,5-dimethyl-4-methoxyphenyl)-5-fluoro-4-pyrimidineamine. The reaction of 2-chloro-N4-(3,5-dimethyl-4-methoxyphenyl)-5-fluoro-4-pyrimidineamine and 3-(methoxycarbonylmethyleneoxy)aniline (650 mg, 3.6 mmol) gave N4-(3,5-dimethyl-4-methoxyphenyl)-5-fluoro-N2-(3-methoxycarbonylmethyleneoxyphenyl)-2,4-pyrimidinediamine (180 mg, 35%). 1H NMR (CD3OD): δ 2.20 (s, 6H), 3.70 (s, 3H), 3.74 (s, 3H), 4.52 (s, 2H), 6.76 (ddd, J=0.9, 2.4 and 8.4 Hz, 1H), 7.03–7.08 (m, 2H), 7.24 (m, 3H), 7.96 (d, J=5.4 Hz, 1H); 19F NMR (282 MHz, CD3OD): δ −162.92; LCMS: ret. time: 23.13 min.; purity: 100%; MS (m/e): 427.04 (MH+).

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