B<sub>2</sub>pin<sub>2</sub>-Mediated Cascade Cyclization/Aromatization Reaction: Facial Access to Functionalized Indolizines
作者:Xiaoning Li、Zunsheng Chen、Weiming Chen、Xin Xie、Hui Zhou、Yingmei Liao、Fuchao Yu、Jiuzhong Huang
DOI:10.1021/acs.orglett.2c02905
日期:2022.10.14
Herein, a B2pin2-mediated radical cascade cyclization/aromatization reaction of enaminone with pyridine is described. This strategy provides a practical way for the construction of valuable functionalized indolizines under metal-, external oxidant-, and base-free conditions, which could be compatible with various kinds of functional groups, such as halogen, π-system, heterocycle, ferrocenyl, etc. A
在此,描述了烯胺酮与吡啶的 B 2 pin 2介导的自由基级联环化/芳构化反应。该策略为在无金属、无外部氧化剂和无碱条件下构建有价值的功能化中氮化合物提供了一种实用的方法,它可以与各种功能基团相容,如卤素、π-系统、杂环、二茂铁基、 etc. 初步的机理研究表明,原位形成的吡啶-硼基自由基引发了反应的发生。