ChemInform Abstract: The [2 + 2] Cycloaddition—Retroelectrocyclization and [4 + 2] Hetero‐Diels—Alder Reactions of 2‐(Dicyanomethylene)indan‐1,3‐dione with Electron‐Rich Alkynes: Influence of Lewis Acids on Reactivity.

Etienne J Donckele,Aaron D Finke,Corinne Boudon,Laurent Ruhlmann,Francois Diederich,Nils Trapp

doi:10.1002/chin.201546030

ChemInform Abstract: The [2 + 2] Cycloaddition—Retroelectrocyclization and [4 + 2] Hetero‐Diels—Alder Reactions of 2‐(Dicyanomethylene)indan‐1,3‐dione with Electron‐Rich Alkynes: Influence of Lewis Acids on Reactivity.

Etienne J Donckele, Aaron D Finke + Show 4 more

https://doi.org/10.1002/chin.201546030

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Journal: ChemInform

Publication Date: Oct 27, 2015

#Cycloaddition Retroelectrocyclization #Influence Of Lewis Acids + Show 4 more

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Abstract

AbstractDepending on the presence of a Lewis acid, 2‐(dicyanomethylene)indan‐1,3‐dione (I) reacts with electron‐rich alkynes either to cyanobuta‐1,3‐dienes via formal [2 + 2] cycloaddition—retroelectrocyclization or to fused 4H‐pyrans via formal [4 + 2] hetero‐Diels—Alder reaction.

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