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. Author manuscript; available in PMC: 2012 Aug 3.
Published in final edited form as: J Am Chem Soc. 2011 Jul 8;133(30):11492–11495. doi: 10.1021/ja205017e

Figure 1.

Figure 1

7Li NMR at −30 °C of 1 : 1 mixture of 7 and 9 with LiHMDS. Enolized separately and combined at −78 °C (Spectrum 1). Warming and recooling to −30 °C (Spectrum 2).