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Reagents and conditions: (a)683 Ni(cod)2, DMF, 100 °C; (b)683,684 I2, AgNO2, DCM/MeCN, rt; (c)683,684 NaBH4, Pd/C, DCM/MeOH, rt; (d)683 PhICl2, CHCl3, 0 °C; (e)684 PbO2, DCM, rt; (f)683 PbO2, DCM, rt, and then, SnCl2, DCM, rt; (g)683 4-tert-butylaniline, Pd-PEPPSI-IPr, NaOt-Bu, toluene, 120 °C.
