[NH2:1][C:2]1[CH:3]=[CH:4][C:5]([Cl:11])=[C:6]([CH:10]=1)[C:7]([OH:9])=[O:8].[CH3:12][O:13][C:14]1[CH:22]=[CH:21][C:17]([C:18](Cl)=[O:19])=[CH:16][CH:15]=1>C1COCC1>[Cl:11][C:5]1[CH:4]=[CH:3][C:2]([NH:1][C:18](=[O:19])[C:17]2[CH:21]=[CH:22][C:14]([O:13][CH3:12])=[CH:15][CH:16]=2)=[CH:10][C:6]=1[C:7]([OH:9])=[O:8]5-Amino-2-chloro-benzoic acid (0.4 g, 2.32 mmol) was diluted with THF (12 mL), treated with 4-methoxy-benzoyl chloride (0.353 g, 2.23 mmol) and stirred for 16 h. Solvents were then removed and resulting solids were triturated with DCM. After filtration, the title compound was obtained as a white solid (0.5 g, 71%).
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