Nonproductive Events in Ring-Closing Metathesis Using Ruthenium Catalysts

作者:Stewart Ian C; Keitz Benjamin K; Kuhn Kevin M; Thomas Renee M; Grubbs Robert H*
来源:Journal of the American Chemical Society, 2010, 132(25): 8534-+.
DOI:10.1021/ja1029045

摘要

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.

  • 出版日期2010-6-30