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. Author manuscript; available in PMC: 2014 May 22.
Published in final edited form as: Angew Chem Int Ed Engl. 2014 Mar 3;53(10):2556–2591. doi: 10.1002/anie.201302572

Scheme 6.

Scheme 6

Enyne cycloisomerization/Cope rearrangement duets postulated to involve divinylcyclopropane intermediates. (a) [Chung, 2010, Ref. [15a]] (b) [Iwasawa, 2006, Ref. [15b]]