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. Author manuscript; available in PMC: 2011 May 1.
Published in final edited form as: Bioorg Med Chem. 2010 Mar 27;18(9):3026–3035. doi: 10.1016/j.bmc.2010.03.053

Scheme 1a.

Scheme 1a

a Reagents and conditions: (a) Na2CO3, Pd(OAc)2, dioxane, H2O, 50 °C, overnight; (b) Trifluoromethanesulfonic anhydride, pyridine, CH2Cl2, RT, 2–5 h; (c) K3PO4, Pd(PPh3)4, Dioxane, 85 °C, overnight.