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Computational mechanistic study of palladium(II)-catalyzed carboxyalkynylation of an olefin using an iodine(III) oxidant reagent
The Pd(II)-catalyzed chemical transformations using an iodine(III) oxidant are mostly believed to proceed via a Pd(IV)/Pd(II) catalytic cycle. The present computational study, however, demonstrates that this statement is not always true, and, in some particular cases, an alternative mechanism could be operative. Herein, the reaction mechanism of the Pd(II)-catalyzed carboxyalkynylation of an olefin using an alkynyl benziodoxolone reagent was elucidated with the aid of density functional theory calculations. The catalytic reaction was found to proceed via a mechanism in which a Pd(II) vinylidene-like complex, not a Pd(IV) complex, plays a leading role. The mechanistic understanding of the carboxyalkynylation reaction may have significant implications in a variety of processes catalyzed by transition metal complexes in the presence of alkynyl benziodoxolones.
History
Publication title
OrganometallicsVolume
33Issue
24Pagination
7318-7324ISSN
0276-7333Department/School
School of Natural SciencesPublisher
Amer Chemical SocPlace of publication
1155 16Th St, Nw, Washington, USA, Dc, 20036Rights statement
Copyright 2014 American Chemical SocietyRepository Status
- Restricted