[N+:1]([C:4]1[CH:12]=[C:11]([N+]([O-])=O)[CH:10]=[C:6](C(O)=O)[C:5]=1[OH:16])([O-:3])=[O:2].C1C=CC2N(O)N=NC=2C=1.CC(C)N=C=NC(C)C>>[N+:1]([C:4]1[CH:12]=[CH:11][CH:10]=[CH:6][C:5]=1[OH:16])([O-:3])=[O:2]This material was prepared from 3,5-dinitrosalicylic acid (1d) (1 g, 4.4 mmol), HOBt (1 g, 7.4 mmol), DIC (1,3-diisopropylcarodiimide, 1 mL, 6.4 mmol), and an amino macroporous resin (1 g, 0.4 mmol) using a procedure similar to polystyrene resin (PS-2a).
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