3-Aminobenzonitrile → N2,N4-bis(3-cyanophenyl)-5-fluoro-2,4-pyrimidinediamine

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In a manner analogous to the preparation of N2,N4-bis(3-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine, 3-aminobenzonitrile (177 mg, 1.5 mmol) and 2,4-dichloro-5-fluoropyrimidine (50 mg, 0.3 mmol) gave N2,N4-bis(3-cyanophenyl)-5-fluoro-2,4-pyrimidinediamine (75 mg, 76%). 1H NMR (acetone-d6): δ 7.33 (dt, J=1.8, 7.8 Hz, 1 H), 7.46-7.52 (m, 2 H), 7.59 (t, J=7.8 Hz, 1 H), 7.90 (ddd, J=0.9, 2.1 and 8.4 Hz, 1 H), 8.09 (ddd, J=1.2, 2.4 and 8.4 Hz, 1 H), 8.17 (d, J=3.3 Hz, 1 H), 8.31 (m, 1 H), 8.35 (t, J=2.1 Hz, 1 H), 8.98 (br, 1 H, NH), 9.02 (br, 1 H, NH); 19F NMR (282 MHz, acetone-d6): δ−165.80; LCMS: 24.64 min.; purity: 98.02%; MS (m/e): 331.01 (MH+).

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