Catalyst-Free Synthesis of Fused Triazolo-Diazepino[5,6-b]Quinoline Derivatives via a Sequential Ugi-4CR–Nucleophilic Substitution–Intramolecular Click Reaction

Abstract

A convenient, post-transformational reaction has been ­developed for the construction of highly diversified quinoline-fused triazolo-diazepinones featuring four diversification points by employing a catalyst-free Ugi four-component–nucleophilic substitution–intra­molecular click cycloaddition sequence. This approach provides a wide scope of products with good yields and high bond-forming efficiency.