O-Toluidine → 5,6-dimethyl-N4-(2-methylphenyl)-N2-(pyridin-2-ylmethyl)pyrimidine-2,4-diamine

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The titled compound was synthesized according to the procedure described for preparation of N4-cyclopentyl-5,6-dimethyl-N2-(pyridin-2-ylmethyl)pyrimidine-2,4-diamine (Example 29) using o-toluidine instead of cyclopentanamine. The crude material was purified by column chromatography eluting with mixture of chloroform/ethanol/20% water solution of ammonia (200:10:1), and then the final product was washed with diethyl ether to afford the titled compound as a white solid. 1H NMR (300 MHz, CDCl3) δ ppm 2.08 (s, 3H), 2.27 (s, 3H), 2.34 (s, 3H), 4.66 (d, J=3.2 Hz, 2H), 5.70 (bs, 1H), 6.14 (s, 1H), 7.01 (t, J=6.3 Hz, 1H), 7.13 (t, J=6.3 Hz, 2H), 7.18 (d, J=7.5 Hz, 1H), 7.24 (d, J=7.8 Hz, 1H), 7.58 (t, J=7.8 Hz, 1H), 7.84 (d, J=7.8 Hz, 1H), 8.54 (d, J=4.8 Hz, 1H); MS (ESI) m/z 320.7 (M+1)+.

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