Nonproductive Events in Ring-Closing Metathesis Using Ruthenium Catalysts
作者:Ian C. Stewart、Benjamin K. Keitz、Kevin M. Kuhn、Renee M. Thomas、Robert H. Grubbs
DOI:10.1021/ja1029045
日期:2010.6.30
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