Generation of benzoinimidazo[1,5-a]imidazoles via a copper-catalyzed tandem reaction of carbodiimide and isocyanoacetate

摘要

Carbodiimide reacts with isocyanide catalyzed by copper(Ⅰ) iodide, leading to benzoimidazo[l,5-a]imidazoles in good yields. This reaction is efficient, and proceeds through a formal [3 + 2] cycloaddition and C-N coupling.