Tryptamine → 5-fluoro-N4-(3-hydroxyphenyl)-N2-[2-(indol-3-yl)ethyl]-2,4-pyrimidinediamine

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In like manner to the preparation of N4-(3,4-ethylenedioxyphenyl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine, the reaction of 2-chloro-5-fluoro-N4-(3-hydroxyphenyl)-4-pyrimidineamine (50 mg, 0.21 mmol) and tryptamine (100 mg, 0.62 mmol) gave 5-fluoro-N4-(3-hydroxyphenyl)-N2-[2-(indol-3-yl)ethyl]-2,4-pyrimidinediamine (40 mg, 53%). 1H NMR (CD3OD): δ 3.01 (t, J=7.2 Hz, 2 H), 3.61 (t, J=7.2 Hz, 2 H), 6.51 (ddd, J=0.9, 2.1 and 8.1 Hz, 1 H), 6.96 (td, J=0.9 and 7.2 Hz, 1 H), 7.03-7.09 (m, 3 H), 7.22 (d, J=7.5 Hz, 1

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