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Reagents and conditions: (a) Pd(OAc)2 (4 mol %), rac-BINAP (6 mol %), Cs2CO3, toluene, 130 °C. (b) Pd(OAc)2 (10 mol %), Xantphos (15 mol %), Xantphos Pd G3 (5 mol %), K3PO4, Mo(CO)6, toluene, 100 °C. (c) 2 M NaOH, MeOH, rt. (d) amine, TBTU, DIPEA, DMF, rt.
