A practical approach for the synthesis of tetracyclic pyrroloquinazolines using photoredox strategy has been developed. The visible-light-promoted intramolecular single-electron-transfer process between photocatalyst and N-(2-iodobenzyl)-N-acylcyanamides is considered to be involved in this transformation. Targeted pyrroloquinazoline derivatives (15 examples) are presented in good isolated yields (30%-88%).

Photoredox-catalyzed difunctionalizations of alkenes with O-acyl hydroxylamine derivatives are described. The solvent tunes the outcome of these reactions. Diamidation and oxidative amidation of alkenes can be achieved in CHCN and DMSO, respectively. A variety of 1,2-diamidates and α-amino ketones bearing many functional groups are prepared using Ir(ppy) as the photocatalyst under visible light irradiation.

A novel approach has been reported for the preparation of biaryl sultams using visible-light-promoted denitrogenative cyclization of 1,2,3,4-benzothiatriazine-1,1-dioxides.

Ap ractical and efficient method hasb een developed for the preparation of polysubstituted furans by using av isible-light-promoted photoredox approach. The one-pot synthesis involves ar adical cyclization/deprotection/aromatization reactions equence that proceeds smoothly under mild conditions, which makes this transformation ap owerful tool for the synthesis of av ariety of highly substitutedf urans.

A novel approach to biaryl sultams by photo‐induced denitrogenative cyclization of 1,2,3,4‐benzothiatriazine‐1,1‐dioxides is developed.