[Br:1][C:2]1[CH:10]=[C:9]([F:11])[CH:8]=[CH:7][C:3]=1[C:4](O)=[O:5].BrC1C=CC(Cl)=CC=1[CH2:20][O:21][CH2:22]OC>>[Br:1][C:2]1[CH:10]=[C:9]([F:11])[CH:8]=[CH:7][C:3]=1[CH2:4][O:5][CH2:20][O:21][CH3:22]This compound was made from 2-bromo-4-fluorobenzoic acid in the same manner as compound 18d and was used for the next step without purification.
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