Visible-Light-Induced Annulation of Iodonium Ylides and 2-Isocyanobiaryls to Access 6-Arylated Phenanthridines

A 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene(4-CzIPN)-photocatalyzedcascade arylation/cyclization reaction of 2-isocyanobiaryls and iodoniumylides was established for the synthesis of 6-arylated phenanthridines.This is the first example of employing iodonium ylides as aryl radicalsources in a visible-light-induced radical cascade cyclization reaction.

Automated summary

A 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene(4-CzIPN)-photocatalyzed cascade arylation/cyclization reaction of 2-isocyanobiaryls and iodoniumylides was established for the synthesis of 6-arylated phenanthridines. This is the first example of employing iodonium ylides as aryl radical sources in a visible-light-induced radical cascade cyclization reaction.