[CH3:1][O:2][C:3](=[O:12])[CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[C:7]([NH2:11])[CH:6]=1.CCN(C(C)C)C(C)C.[Cl:22][C:23]1[N:28]=[C:27](Cl)[N:26]=[CH:25][N:24]=1>CN(C=O)C.CCOC(C)=O.O>[CH3:1][O:2][C:3](=[O:12])[CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[C:7]([NH:11][C:27]2[N:28]=[C:23]([Cl:22])[N:24]=[CH:25][N:26]=2)[CH:6]=1
(3-Amino-phenyl)-acetic acid methyl ester was prepared by reacting 3-aminophenylacetic acid with acetyl chloride in MeOH to afford the corresponding methyl ester, HCl salt, (3.09 g, 15.324 mmol). The ester was dissolved in DMF (5 ml) with DIEA (2.67 ml, 15.324 mmol) and cooled to 0° C. To this solution was added dropwise a 0° C. solution of DMF (5 ml) containing 2,4-dichloro-1,3,5-triazine (2.297 g, 15.324 mmol) and DIEA (2.67 ml, 15.324 mmol). The reaction was stirred at ODC for 15 min and then at RT for 1 h. The reaction mix was diluted with EtOAc and water. The layers were separated, and the aqueous layer was extracted twice with EtOAc. The combined organic layers were washed 4 times with brine and dried over Na2SO4. The crude was concentrated down and dried under reduced pressure, giving [3-(4-chloro-[1,3,5]triazin-2-ylamino)-phenyl]-acetic acid methyl ester (4.3 g, 100%).
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