TEMPO-Mediated Interrupted 6π-Photocyclization of <i>ortho</i>-Biaryl-Appended 1,3-Dicarbonyl Compounds toward 10-Phenanthrenols
作者:Jun-Li Li、Zhao Yang、Shigang Shen、Xiu-Long Yang、Xiaoying Niu
DOI:10.1021/acs.joc.3c01316
日期:2024.1.5
halogen-, and base-free TEMPO-mediated interrupted 6π-photocyclization/dehydrogenative aromatization of ortho-biaryl-appended 1,3-dicarbonyl compounds for the preparation of 10-phenanthrenols. The reaction involves rapid photocycloaddition via a 1,2-biradical of 1,3-dicarbonyl compounds, followed by subsequent dehydrogenative aromatization of 1,4-biradical intermediates using TEMPO as the commercially available
在本文中,我们提出了一个光诱导催化剂、无卤素和无碱 TEMPO 介导的间断 6π-光环化/脱氢芳构化邻位联芳基连接的 1,3-二羰基化合物用于制备 10-菲酚的示例。该反应涉及通过 1,3-二羰基化合物的 1,2-双自由基进行快速光环加成,然后使用 TEMPO 作为市售氧化剂而不是被 TEMPO 捕获以形成烷氧基胺产物,随后对 1,4-双自由基中间体进行脱氢芳构化。