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. Author manuscript; available in PMC: 2013 Jul 11.
Published in final edited form as: J Am Chem Soc. 2012 Jun 27;134(27):11128–11131. doi: 10.1021/ja305117m

Figure 1.

Figure 1

Tentative stereochemical model for enantioselective bromolactonizations catalyzed by 5. (A) Preferred mode for cyclizations of 6a–e. (B) Preferred mode for cyclizations of 6f–h. (C) Preferred mode for cyclizations of 9a–c; model for 6-exo cyclizations of 9e,f is similar.