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. Author manuscript; available in PMC: 2011 Jan 15.
Published in final edited form as: Bioorg Med Chem Lett. 2009 Nov 18;20(2):665. doi: 10.1016/j.bmcl.2009.11.056

Scheme 1.

Scheme 1

Reagents and conditions: (a) 3,5-bis(CF3)PhCOCl, aq NaOH, RT, overnight; or 3,5-bis(CF3)PhCOCl, triethylamine (TEA), CH2Cl2 ; (b) 4-ClPhNH2, EDC, HOBt, DIPEA, THF, RT, overnight.