Scheme 2. Synthesis of FeIII-HOPO-PhO-fluo.
Experimental conditions: (a) (COCl)2, DMF (cat.), CH2Cl2; (b) 4, NEt3, CH2Cl2; (c) HBr/AcOH; (d) fluorescein, NaOH (aq), FeBr3, EtOH.
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