Mechanistic Aspects of Olefin Metathesis

N. Calderon, E. A. Ofstead, W. A. Judy

doi:10.1002/anie.197604011

Mechanistic Aspects of Olefin Metathesis

DOI Web Site Web Site 被引用文献1件

書誌事項

公開日: 1976-07

権利情報

http://onlinelibrary.wiley.com/termsAndConditions#vor

DOI

10.1002/anie.197604011

公開者: Wiley

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<jats:title>Abstract</jats:title><jats:p>In this paper views regarding the nature of the transition state in olefin metathesis are discussed. Earlier concepts that assumed a pairwise scrambling mechanism have been recently challenged. Metathesis studies involving acyclic as well as cyclic olefins have been reported which strongly suggest a chain process that may involve a carbene‐to‐metallocycle interconversion as the pathway responsible for transalkylidenation. Catalytic systems that display a low apparent metathesis activity on terminal olefins display a unique specificity in cross reactions with internal olefins. Critical experiments indicate that terminal olefins rapidly undergo regenerative metathesis preferentially. Results suggest that in the transient metallocycle, the most stringent steric requirements occur at the β‐carbon, although the origin of this steric demand is not obvious.</jats:p>