isomerization of 1,3-dienes is described. In the combination of a CoCl2 precatalyst with an amido-diphosphine-oxazoline ligand, the geometrical isomerization of E/Z mixtures of 1,3-dienes proceed in a stereoconvergent manner, affording (E) isomers in high stereoselectivity. This facile transformation features a broad substrate scope with good functional group tolerance and could be scaled up to the
描述了一种有效的
钴催化的 1,3-二烯几何异构化。在 CoCl 2预催化剂与酰胺基-
二膦-
恶唑啉
配体的组合中,1,3-二烯的E / Z混合物的几何异构化以立体收敛的方式进行,从而提供具有高立体选择性的 ( E ) 异构体。这种简单的转化具有广泛的底物范围和良好的官能团耐受性,并且可以在催化剂负载量为 1 mol % 的情况下顺利放大至克级。