Iterative Dianion Relay Along the Ring: Formation of gem-Bis(trimethylsilyl) Cyclopentenones from 2,5-Bis(trimethylsilyl) Oxy-cyclopentadienyl Dianions and Acid Chlorides
作者:Heng Li、Lantao Liu、Zitao Wang、Fei Zhao、Shaoguang Zhang、Wen-Xiong Zhang、Zhenfeng Xi
DOI:10.1002/chem.201100830
日期:2011.6.27
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.