The electronic and steric properties of tailored cyclopentadienyl (Cp) ligands are powerful handles to modulate the catalytic properties of their metal complexes. This requires the individual preparation, purification and storage of each ligand/metal combination. Alternative, ideally in situ, complexation protocols would be of high utility. We disclose a new approach to access Cp metal complexes. Common metal precursors rapidly react with cyclopentadienyl carbinols via β-carbon eliminations to directly give the Cp-metal complexes. An advantage of this is the direct and flexible use of storable pre-ligands. No auxiliary base is required and the Cp complexes can be prepared in situ in the reaction vessel for subsequent catalytic transformations.

中文翻译：

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β-碳消除策略可方便地就地获得环戊二烯基金属络合物

量身定制的环戊二烯基（Cp）配体的电子和位阻性质是调节其金属配合物催化性质的有力手段。这需要每种配体/金属组合的单独制备，纯化和储存。替代地，理想地原位地，络合方案将是高度有用的。我们公开了一种访问Cp金属络合物的新方法。常见的金属前体通过β-碳消除与环戊二烯基甲醇迅速反应，直接得到Cp-金属配合物。这样的优点是可存储的预配体的直接和灵活的使用。不需要辅助碱，并且可以在反应容器中原位制备Cp络合物用于后续的催化转化。