Enantioselective Preparation of Planar-Chiral Transition Metal Complexes by Asymmetric Olefin-Metathesis Reactions in Metal Coordination Spheres.

摘要: Planar-chiral transition metal complexes are useful chiral auxiliaries in organic and organometallic chemistry, they have been utilized as ligands, catalysts, or building blocks, etc. Despite the importance of such planar-chiral species asymmetric synthesis, their preparation optically active forms is still a challenging problem. Indeed, reported examples catalytic enantioselective synthesis rare, this has developing area field. In personal account, recent results from our research group on various summarized. The ring-closing metathesis reactions catalyzed by well-defined molybdenum-alkylidene powerful methods to control planar chirality ferrocenes, ruthenocenes, (η6 -arene)chromium complexes, (η5 -cyclopentadienyl)manganese(I) complexes. Application enantiomerically enriched obtained described well.