Three‐Component Protocol for Modular Assembly of Triphenylamine‐Tethered 2‐Arylquinolines and Their Photophysical Properties

ABSTRACT A Cu(OTf) 2 ‐catalyzed three‐component reaction of arylamines, aromatic aldehydes, and functionalized phenylacetylenes has been successfully accomplished. This strategy provides a wide range of structurally diversified triphenylamine‐tethered 2‐arylquinoline derivatives in good yields with a variety of extended π‐structures and functional group compatibility. The strategy described here is easily scalable and several useful synthetic transformations of the prepared functionalized 2‐arylquinoline derivatives were also performed. Furthermore, the photophysical properties of the synthesized products were evaluated, exhibiting interesting fluorescence properties with large Stokes shifts.