Organophotoredox‐Catalyzed Cascade Radical Annulation of 2‐(Allyloxy)arylaldehydes with
<i>N</i>
‐(acyloxy)phthalimides: Towards Alkylated Chroman‐4‐one Derivatives
作者:Sanju Das、Sushanta Kumar Parida、Tanumoy Mandal、Laxmikanta Sing、Suman De Sarkar、Sandip Murarka
DOI:10.1002/asia.201901735
日期:2020.3.2
approach for the synthesis of highly important 3-alkyl substituted chroman-4-one scaffold is developed using visible light induced radicalcascade cyclization strategy. The reaction is initiated through the generation of alkyl radicals from N-(acyloxy)phthalimides under photoredox conditions, which subsequently undergo intermolecular cascaderadical cyclization on 2-(allyloxy)arylaldehydes to afford chroman-4-one