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. Author manuscript; available in PMC: 2019 Jan 2.
Published in final edited form as: Chem Commun (Camb). 2018 Dec 13;54(100):14089–14092. doi: 10.1039/c8cc08533a

Fig. 3.

Fig. 3

Transition-state structures for the (3+2) cycloadditions of 4a with DIBAC and ABNBD (activation free energies and predicted rate constants are shown below each structure).