Visible light promoted oxygenation of oxazolidinones by an anthraquinone-resorcinol based donor–acceptor polymer as a heterogeneous photocatalyst

Abstract

The direct conversion of 2-oxazolidinone to oxazolidine-2,4-dione can be achieved by C(sp³)–H bond activation using a heterogeneous photocatalyst. Here, a donor–acceptor (D–A) conjugated heterogeneous polymer (ACP) was employed as an efficient photocatalyst for the oxidation. Upon light irradiation, ACP functions as a photo-base and facilitates the reaction via a proton-coupled electron transfer (PCET) mechanism.