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Reagents and conditions: (a)378 Pd2(dba)3, Na2CO3, SPhos, toluene/ethanol/H2O (10:1:1), 110 °C; (b) 30% H2O2, acetic acid/chloroform (1:1), rt; (c) (1) Eaton’s reagent, rt, (2) pyridine/H2O, reflux; (d) NO2SbF6, DCM/MeCN, rt.
