Catalytic Asymmetric Synthesis of Chiral Transition-Metal Complexes by the Use of Modern Organic Transformation

钼催化不对称合环复分解（ARCM）对1,2-二烯丙基二茂铁衍生物的动力学拆分得到相应的（4,7-二氢独立基）铁（II）衍生物，产率高，对映选择性高。同样，通过ARCM对（1,2,3-三烯丙烯基）-茂金属进行去对称，得到了相应的（1,4-二氢芴基）-茂金属衍生物。c对称的锆石可通过ARCM转化为相应的c3桥平面手性锆石，具有较高的对映选择性。所得的平面手性氧化锆配合物可作为不对称碳金属化反应的催化剂。用mo催化的ARCM实现了外消旋平面手性（芳烃）铬配合物的动力学拆分，具有优异的对映选择性。由此得到的旋光性（溴芳烃）铬配合物是各种平面手性（芳烃）铬配合物的优良前体。

Kinetic resolution of 1,2-diallylferrocene derivatives by Mo-catalyzed asymmetric ring-closing metathesis (ARCM) gave the corresponding (4,7-dihydroindenyl)iron(II) derivatives in good yields with high enantioselectivity. In the same way, desymmetrization of (1,2,3-triallylindenyl)-metallocenes by ARCM provided the corresponding (1,4-dihydrofluorenyl)-metallocene derivatives in high ee's.The Cs-symmetric zirconocenes could be converted to the corresponding C3-bridged planar-chiral ansa-zirconocenes by ARCM with high enantioselectivity. The obtained planar-chiral ansa-zirconocene complexes could be applicable to the asymmetric carbometallation reaction as catalysts.Kinetic resolution of the racemic planar-chiral (arene)chromium complexes was realized by Mo-catalyzed ARCM with excellent enantioselectivity. The optically active (bromoarene)chromium complex thus obtained is an excellent precursor to various planar-chiral (arene)chromium complexes.