Asymmetric Synthesis of Enantioenriched 6-Hydroxyl Butyrolactams Promoted by N-Heterocyclic Carbene
作者:Zhouli Hu、Ying Zhu、Zhenqian Fu、Wei Huang
DOI:10.1021/acs.joc.9b01490
日期:2019.8.16
Herein, an efficient route to synthesize 6-hydroxyl butyrolactams has been successfully developed via an N-heterocyclic carbene-catalyzed formal [3 + 2] annulation of bromoenals with α-amino ketones, followed by reduction. Remarkably, enantioenriched epi-neoclausenamide, which is one of the clausenamide derivatives, could be efficiently prepared by this strategy.
在本文中,已经成功地通过N-杂环卡宾催化的溴化烯与α-氨基酮的正式[3 + 2]环合,然后还原的方法成功开发了合成6-羟基丁内酰胺的有效途径。值得注意的是,对映体富集的epi -neoclausenamide,这是黄皮衍生物之一,可以有效地通过该策略制备。