4-Amino-2,6-dichlorophenol → N2,N4-bis-(3,5-dichloro-4-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine

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In like manner to the preparation of N2,N4-bis(3-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine, the reaction of 2,4-dichloro-5-fluoropyrimidine with 3,5-dichloro-4-hydroxyaniline gave N2,N4-bis-(3,5-dichloro-4-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine. LCMS: ret. time: 21.26 min.; purity: 88%; MS (m/e): 450 (M+); 1H NMR (DMSO-d6): δ 9.96 (1H, s), 9.59 (1H, s), 9.47 (1H, s), 9.37 (1H, s), 8.22 (1H, d, J=3.6 Hz), 7.79 (2H, s), 7.74 (2H, s).

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