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. Author manuscript; available in PMC: 2016 Mar 24.
Published in final edited form as: J Org Chem. 2015 Dec 4;80(23):11672–11685. doi: 10.1021/acs.joc.5b01951

Figure 4.

Figure 4

Becke3LYP/6-31G* calculations for the asynchronous endo and exo transition structures for the reaction of acetylene dicarboxylic acid with isoprene by Singleton et al. 2001.