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. Author manuscript; available in PMC: 2012 May 10.
Published in final edited form as: J Am Chem Soc. 2010 Nov 11;132(48):17118–17129. doi: 10.1021/ja1045428

Figure 10.

Figure 10

UV-vis spectral changes observed in the reaction of 2 (0.5 mmol/L, blue solid line) with 6 equivalents PhCO2H in MeOH at −20 °C over a 3-min period yielding a mixture of compounds 3 and 5 (yellow solid line).