Nonproductive events in ring-closing metathesis using ruthenium catalysts.

ABSTRACT: The relative TONs of productive and nonproductive metathesis reactions of diethyl diallylmalonate are compared for eight different ruthenium-based catalysts. Nonproductive cross metathesis is proposed to involve a chain-carrying ruthenium methylidene. A second more-challenging substrate (dimethyl allylmethylallylmalonate) that forms a trisubstituted olefin product is used to further delineate the effect of catalyst structure on the relative efficiencies of these processes. A steric model is proposed to explain the observed trends.

SUBMITTER: Stewart IC 

PROVIDER: S-EPMC2908527 | biostudies-literature | 2010 Jun

REPOSITORIES: biostudies-literature