Asymmetric organocatalytic cascade Michael/hemiketalization/retro-Henry reaction of β,γ-unsaturated ketoesters with α-nitroketones
作者:Yaojun Gao、Qiao Ren、Woon-Yew Siau、Jian Wang
DOI:10.1039/c1cc11124h
日期:——
An unprecedented enantioselective organocatalytic Michael/hemiketalization/retro-Henry cascade sequence is described, which catalyzed by a simple bifunctional indane amine-thiourea catalyst. This process provides a new route to the enantioselective synthesis of 5-nitro-pent-2-enoates, a precursor to α-ketolactam.
描述了一种前所未有的对映选择性有机催化迈克尔/半缩酮化/逆亨利级联序列,该序列由简单的双功能茚满胺-硫脲催化剂催化。该过程为对映选择性合成 5-硝基-戊-2-烯酸酯(α-酮内酰胺的前体)提供了一条新途径。