Is the reaction sequence in phosphine-catalyzed [8+2] cycloaddition controlled by electrophilicity?

Chem Commun (Camb)

Green Catalysis Center, and College of Chemistry, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, P. R. China. and School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, P. R. China.

Published: January 2021

In the presence of multiple electrophiles, the reaction sequence is a critical mechanistic problem. Here, we report a theoretical study on the mechanism of phosphine-catalyzed [8+2] cycloaddition of heptafulvenes and allenoate. DFT calculations showed that electrophilicity is the barrier for nucleophilic attack, while it fails in the prediction of priority.

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Source
http://dx.doi.org/10.1039/d0cc07370aDOI Listing

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