Highly Functionalized Tricyclic Oxazinanones via Pairwise Oxidative Dearomatization and <i>N</i>-Hydroxycarbamate Dehydrogenation: Molecular Diversity Inspired by Tetrodotoxin
作者:Steffen N. Good、Robert J. Sharpe、Jeffrey S. Johnson
DOI:10.1021/jacs.7b07745
日期:2017.9.13
Benzenoids in principle represent attractive and abundant starting materials for the preparation of substituted cyclohexanes; however, the synthetic tools available for overcoming the considerable aromatic energies inherent to these building blocks limit the available product types. In this paper, we demonstrate access to heretofore unknown heterotricyclic structures by leveraging oxidative dearomatization
苯类原则上代表了用于制备取代环己烷的有吸引力且丰富的原料;然而,可用于克服这些构件固有的大量芳烃能量的合成工具限制了可用的产品类型。在本文中,我们通过使用普通氧化剂利用 2-羟甲基苯酚的氧化脱芳构化和同时进行的 N-羟基氨基甲酸酯脱氢,证明了获得迄今为止未知的杂三环结构。成对生成的、相互反应的物质然后参与第二阶段的酰基亚硝基 Diels-Alder 环加成反应。衍生的 [2.2.2]-oxazabicycles 具有四个正交官能团和三个立体中心,其反应化学显示下游产品具有相当大的多样性。