Eu(fod)3-Catalyzed rearrangement of allylic esters possessing a chelating site. Application to enediyne synthesis

Add time:07/24/2019    Source:sciencedirect.com

A number of 1,2-dialkynyl-3-alkyl or 3-aryl allylic esters underwent a facile Eu(fod)3-catalyzed rearrangement at 20–132 °C to give exclusively cis-enediynes. The esters capable of forming a chelate with Eu(III) exhibited a remarkably enhanced reactivity; the C3 aryl group facilitated the rearrangement as well.

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