Modular C-H functionalization cascade of aryl iodides.

We report the first example of ipso-borylation for the modular 1,2-bisfunctionalization of aryl iodides via C-H functionalization. The carbon-boron bond is used as a lynchpin to access ipso carbon-carbon, carbon-nitrogen, carbon-oxygen, and carbon-halogen (Cl, Br, I) bonds. The utility of our methodology is illustrated through quick, modular syntheses of the pharmaceuticals Abilify and Flunixin.