Preparation and Reactivity of Acyclic Chiral Allylzinc Species by a Zinc‐Brook Rearrangement
作者:Markus Leibeling、Khriesto A. Shurrush、Veronika Werner、Lionel Perrin、Ilan Marek
DOI:10.1002/anie.201602393
日期:2016.5.10
The zinc‐Brook rearrangement of enantiomerically enriched α‐hydroxy allylsilane produces a chiral allylzinc intermediate, which reacts with retention of configuration in the presence of an electrophile. Two remarkable features of this transformation are the stereochemical outcome during the formation of the allylzinc species and the complete stereocontrol in the organized six‐membered transition state
对映体富集的 α-羟基烯丙基硅烷的锌-布鲁克重排产生手性烯丙基锌中间体,在亲电子试剂的存在下与构型保持反应。这种转变的两个显着特征是烯丙基锌物种形成过程中的立体化学结果和有组织的六元过渡态中的完全立体控制,这导致了反应序列中手性的整体和完全转移。