Application of Photosensitizer 2, 4, 5, 6-Tetrakis(carbazol-9-yl)-1, 3-dicyanobenzene in Photo-induced Transition-Metal-Free Organic Synthesis

Abstract

Visible-light-promoted organic synthesis is an important research hotspot and frontier in organic chemistry in recent years. Particularly, as a novel organic photosensitizer, 2,4,5,6-tetrakis(carbazol-9-yl)-1,3-dicyanobenzene (4CzIPN) has showed excellent catalytic performance in visible-light-induced radical reactions. The recent progress on the transition-metalfree photosynthesis under visible-light catalyzed by 4CzIPN is reviewed, and the application of 4CzIPN for photocatalytic organic transformations from different precursors (including silicon reagent, carboxylic acid and its derivatives, sulfurcontaining reagent and fluorine reagent) is included.