Synthesis of 6-substituted phenanthridines by metal-free, visible-light induced aerobic oxidative cyclization of 2-isocyanobiphenyls with hydrazines?

Green Chemistry Pub Date: 2014-01-29 DOI: 10.1039/C3GC42517G

Abstract

Irradiation of hydrazines with visible-light in the presence of organic dye eosin B generates various types of functional radicals, which are trapped by 2-isocyanobiphenyls to give 6-substituted phenanthridines.

Graphical abstract: Synthesis of 6-substituted phenanthridines by metal-free, visible-light induced aerobic oxidative cyclization of 2-isocyanobiphenyls with hydrazines
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