Readily accessible and easily modifiable Ru-based catalysts for efficient and Z-selective ring-opening metathesis polymerization and ring-opening/cross- metathesis

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机构：

[1] Khan, R. Kashif M.

[2] Torker, Sebastian

[3] Hoveyda, Amir H.

来源：

Hoveyda, A.H. (amir.hoveyda@bc.edu) | 1600年 / American Chemical Society卷 / 135期

关键词：

Rationally designed Ru-based catalysts for efficient Z-selective olefin metathesis are featured. The new complexes contain a dithiolate ligand and can be accessed in a single step from commercially available precursors in 68-82% yield. High efficiency and exceptional Z selectivity (93:7 to >98:2 Z:E) were achieved in ring-opening metathesis polymerization (ROMP) and ring-opening/cross-metathesis (ROCM) processes; the transformations typically proceed at 22 C and are operationally simple to perform. Complete conversion was observed with catalyst loadings as low as 0.002 mol %; and turnover numbers of up to 43 000 were achieved without rigorous substrate purification or deoxygenation protocols. X-ray data and density functional theory computations provide support for key design features and shed light on mechanistic attributes. © 2013 American Chemical Society;

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摘要：

Journal article (JA)

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