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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 4.

Figure 4

ESI-MS spectra following the conversion of 1 (m/z = 357.1) to 3 (389.2) and 4 (405.2): (A) 1; (B) 1 + 1 equiv. m-CPBA; (C) 1 + 2 equiv. m-CPBA; (D) 1 + 3 equiv. m-CPBA