Organophotoredox‐mediated Formal [3+2]‐Cycloaddition of 2
<i>H</i>
‐Azirines with Aryldiazonium Salts: Direct Access to Trisubstituted 1,2,4‐Triazoles
作者:Poornima Mishra、Prashant Kumar、Oj Shikhar Srivastava、Namrata Rastogi
DOI:10.1002/asia.202300007
日期:——
work documents an organophotoredox-mediated formal [3+2]-cycloaddition of 2H-azirines with aryl diazonium tetrafluoroborate salts to yield 1,3,5-trisubstituted 1,2,4-triazoles. The reaction furnishes a regioisomeric mixture of 1,2,4-triazoles in case of unsymmetrically substituted azirines. It is noteworthy that aryl radical generation from diazonium salt under visible light photoredox conditions could
目前的工作记录了有机光氧化还原介导的正式 [3+2]-2 H-氮杂环加成与芳基重氮四氟硼酸盐生成 1,3,5-三取代的 1,2,4-三唑。在不对称取代的氮杂环丙烷的情况下,该反应提供 1,2,4-三唑的区域异构混合物。值得注意的是,通过仔细选择反应条件,可以成功避免在可见光光氧化还原条件下重氮盐产生芳基自由基。