Highly Regio‐, Diastereo‐, and Enantioselective Synthesis of Tetrahydroazepines and Benzo[
<i>b</i>
]oxepines through Palladium‐Catalyzed [4+3] Cycloaddition Reactions
作者:Barry M. Trost、Zhijun Zuo
DOI:10.1002/anie.201911537
日期:2020.1.13
A novel Pd0 -catalyzed asymmetric [4+3] annulation reaction of two readily accessible starting materials has been developed for building seven-membered heterocyclic architectures. The potential [3+2] side pathway could be suppressed though fine tuning of the conditions. A broad scope of cycloaddition donors and acceptors participated in the transformation with excellent chemo-, regio-, diastereo-,
已经开发出一种新颖的Pd0催化的两种易于获取的起始材料的不对称[4 + 3]环化反应,用于构建七元杂环体系。通过条件的微调可以抑制潜在的[3 + 2]旁通路。大量的环加成供体和受体以优异的化学选择性,区域选择性,非对映异构体和对映体选择性参与了转化,从而形成了有价值的四氢a庚因和苯并[b]氧杂环丁烷。