Construction of five- and seven-membered rings facilitated by alkyne-azide functionality: access to quinoline fused triazolo-azepines

The synthesis of novel quinoline-fused triazolo-azepine derivatives has been reported using an intramolecular 1,3-dipolar azide-alkyne cycloaddition strategy. This method possesses considerable potential to synthesize five- and seven-membered rings in high yields (65-87%) without the necessity of metal catalysts or additives. Additionally, this methodology was applicable to pyridine and tetralone based adducts to afford triazolo-azepine derivatives. This intriguing chemistry offers numerous advantages, including metal-free and additive-free processes, applicability to gram scale synthesis, high atom economy and easy access to a diverse library of potential pharmacological compounds in high yields.

Recent Developments of Quinoline Derivatives and their Potential Biological Activities

Heterocyclic compounds containing the quinoline ring play a significant role in organic synthesis and therapeutic chemistry. Polyfunctionalized quinolines have attracted the attention of many research groups, especially those who work on drug discovery and development. These derivatives have been widely explored by the research biochemists and are reported to possess wide biological activities. This review focuses on the recent progress in the synthesis of heterocyclic compounds based-quinoline and their potential biological activities.