Transition-Metal-Free [4+2] Cyclocondensation of Diaryliodonium salts Accessing Phenazine, Phenothiazine, Phenoxazine and Dioxane Derivatives

We report here a versatile transition-metal-free synthesis of diverse heterocycles from novel ortho-fluorinated nitro-diaryliodonium salts. The protocol shows broad functional-group tolerance and supports late-stage derivatization, as demonstrated by the synthesis...