N-Heterocyclic Carbene-Catalyzed Intramolecular Aldehyde-Nitrile Cross Coupling: An Easy Access to 3-Aminochromones.

An immense effort has been made to develop an efficient strategy for the carbon−carbon bond formation between aldehyde and nitrile intramolecularly using an N-heterocyclic carbene catalyst to derive 3-aminochromone derivatives in good to excellent yields (80−95%).