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. Author manuscript; available in PMC: 2008 Sep 5.
Published in final edited form as: Org Lett. 2007 Jan 18;9(2):215–218. doi: 10.1021/ol062643a

Figure 1.

Figure 1

1H NMR experiment: Reaction of 3 with K2CO3 in CD3OD. (1) starting material 3; (2) 10 min reaction, 3 + cyclic intermediate + acyclic intermediate + benzyl alcohol + product 6; (3) 50 min reaction, product 6 + benzyl alcohol. See Scheme 4 for resonance letter assignments.