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aReagents and conditions: (a) i. MeNH2 in THF, cat. AcOH, CHCI3/MeOH, Na2SO4, r.t., ii. NaBH4, MeOH, 0 °C - r.t., iii. Boc2O, THF, r.t.; (b) K4Fe(CN)6 × 3 H2O, t-BuXPhos, t-BuXPhos G3, KOAc, H2O/dioxane, 100 °C; (c) [(PPh3)2PdCI2], Cul, Et3N, 70 °C; (d) TBAF in THF, THF, 0 °C; (e) H2, Pd/C, MeOH, r.t.
