An Enantiomerically Pure Adamantylimido Molybdenum Alkylidene Complex. An Effective New Catalyst for Enantioselective Olefin Metathesis

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• 作者：W. C. Peter Tsang ; Jesper A. Jernelius ; G. A. Cortez ; Gabriel S. Weatherhead ; Richard R. Schrock ; and Amir H. Hoveyda
• 刊名：Journal of the American Chemical Society
• 出版年：2003
• 出版时间：March 5, 2003
• 年：2003
• 卷：125
• 期：9
• 页码：2591 - 2596
• 全文大小：161K
• 年卷期：v.125,no.9(March 5, 2003)
• ISSN：1520-5126

文摘

An enantiomerically pure Mo-based complex that bears an alkylimido ligand is prepared andcharacterized through NMR spectroscopy and X-ray analysis. Mo complex 4 is the only reported chiralalkylimido catalyst; all previous chiral complexes are arylimido systems. These studies show that the chiralMo catalyst exists exclusively as the syn isomer and that it offers unique reactivity and selectivity profilesin asymmetric olefin metathesis.