Electroreductive Coupling of Optically Active α,β-Unsaturated Carbonyl Compounds with Diaryl Ketones: Asymmetric Synthesis of 4,5,5-Trisubstituted γ-Butyrolactones
作者:Naoki Kise、Yusuke Hamada、Toshihiko Sakurai
DOI:10.1021/ol5013789
日期:2014.6.20
The electroreductive coupling of optically active N-E-crotonoyl- and N-cinnamoylimidazolidin-2-ones and oxazolidin-2-ones with diaryl ketones in the presence of chlorotrimethylsilane gave adducts with high diastereoselectivity. The adducts were readily transformed to optically active 4,5,5-trisubstituted γ-butyrolactones by treatment with TBAF.
在氯代三甲基硅烷的存在下,光学活性的N - E-巴豆酰基-和N-肉桂酰咪唑烷-2-酮和恶唑烷-2-酮与二芳基酮的电还原偶联产生具有高非对映选择性的加合物。通过用TBAF处理,将加合物容易地转化为旋光的4,5,5-三取代的γ-丁内酯。