β‐Functionalized and α,β‐Difunctionalized Ketones from 1‐Arylallylic Alcohols via Dipotassio α,β‐Dianion Intermediates
作者:Rikuo Hayashi、Kaori Ando、Taro Udagawa、Masahiro Sai
DOI:10.1002/adsc.202201047
日期:2023.3.21
(TMSCH2K). The reaction proceeded via the formation of the highly nucleophilic dipotassio α,β-dianion as the key intermediate, which served as a metal homoenolate equivalent. This protocol also allowed the one-pot synthesis of α,β-difunctionalized ketones using two different electrophiles, thus demonstrating its synthetic advantages over other protocols involving metal homoenolates.
本研究报道了在(三甲基甲硅烷基)甲基钾 (TMSCH 2 K)存在的情况下,从现成的 1-芳基烯丙醇合成多种 β-官能化酮。反应通过形成高度亲核的双钾 α,β-二价阴离子作为关键中间体,作为金属均烯醇化物等价物进行。该协议还允许使用两种不同的亲电子试剂一锅法合成 α,β-双官能化酮,从而证明其相对于其他涉及金属均烯醇化物的协议的合成优势。