Dianionic relay linchpins: A new type of anion relay linchpin for migrating silyl groups was developed to form gem‐bis(trimethylsilyl) cyclopentenones containing a stable enol moiety. The dianion was relayed iteratively along the Cp ring with the exocyclic oxyanion as the posthouse (see scheme). Key intermediates were isolated and characterized to support the proposed reaction mechanism.
阳离子接力发夹:开发了一种用于迁移甲
硅烷基的新型阴离子接力发夹,以形成含有稳定烯醇部分的宝石-双(三甲基甲
硅烷基)
环戊烯酮。二价阴离子以环外
氧阴离子为邮递基,沿Cp环重复传递(见方案)。分离出关键中间体并进行了表征,以支持拟议的反应机理。