Water‐Promoted Metal‐Free Aerobic Oxidative Annulation for the Multicomponent Synthesis of Acridine‐1,8‐Diones Derivatives and Their Photophysical Studies

Abstract

Among the optimistic areas of research, is the creation of novel C‐C, C‐N, and C‐O bonds by replacing toxic and waste‐generating chemicals with alcohols as more sustainable and greener reagents. The co‐existence of molecular oxygen and TBHP was admired by its capacity to oxidize and cyclize to form biologically active acridine‐1,8‐dione derivatives from alcohol, aniline and dimedone without any metal catalyst. The decomposition of TBHP and aeration of molecular oxygen on the surface of water was the key factor for effective catalytic outcome. The current method exhibits tolerance for diverse substrates to afford acridine‐1,8‐dione derivatives (18 compounds) with high yield (up to 95%). Additionally, the photophysical properties of the acridine‐1,8‐dione derivatives were also studied and found that few of the acridine‐1,8‐dione derivatives have shown appreciable AIEE behaviour.