Br[CH2:2][C:3]([O:5][CH2:6][CH3:7])=[O:4].[N+:8]([C:11]1[CH:16]=[CH:15][C:14]([OH:17])=[CH:13][CH:12]=1)([O-:10])=[O:9]>>[N+:8]([C:11]1[CH:16]=[CH:15][C:14]([O:17][CH2:2][C:3]([O:5][CH2:6][CH3:7])=[O:4])=[CH:13][CH:12]=1)([O-:10])=[O:9]Ethyl bromoacetate is reacted with para-nitrophenol under standard conditions to afford ethyl 2-(4-nitrophenoxy)acetate, which is elaborated to ethyl 2-(4-hydrazinophenoxy)acetate using the reduction/oxidation sequence described for Example Y.
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