CuI catalyzed N-arylation of amide as a key step for the preparation of 3-aryl β-carbolin-1-ones†
Abstract
An expedient synthetic route for 3-aryl β-carbolin-1-ones was developed starting from ethyl acetamidocyanoacetate and chalcone derivatives. The five- and six-membered nitrogen-containing rings in the β-carbolin-1-ones were elaborated efficiently by an intramolecular ketone-nitrile annulation and an intramolecular N-arylation of amide respectively.