Isolation of Pure Disubstituted E Olefins through Mo-Catalyzed Z-Selective Ethenolysis of Stereoisomeric Mixtures
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- 作者：Smaranda C. Marinescu ; Daniel S. Levine ; Yu Zhao ; Richard R. Schrock ; Amir H. Hoveyda
- 刊名：Journal of the American Chemical Society
- 出版年：2011
- 出版时间：August 3, 2011
- 年：2011
- 卷：133
- 期：30
- 页码：11512-11514
- 全文大小：723K
- 年卷期：v.133,no.30(August 3, 2011)
- ISSN：1520-5126
文摘
Monoaryloxide鈥損yrrolide (MAP) complexes of molybdenum were employed for the selective ethenolysis of 1,2-disubstituted Z olefins in the presence of the corresponding E olefins. Reactions were performed in the presence of 0.02鈥?.0 mol % catalyst at 22 掳C under 20 atm ethylene. We have demonstrated that the Z isomer of an easily accessible E:Z mixture can be destroyed through ethenolysis and the E alkene thereby isolated readily in high yield and exceptional stereoisomeric purity.