N‐Benzyl aroyl‐S,N‐ketene acetals can be readily synthesized by condensation of aroyl chlorides and N‐benzyl 2‐methyl benzothiazolium salts in good to excellent yields, yielding a library of 35 chromophores with bright solid‐state emission and aggregation‐induced emission characteristics. Varying the substituent from electron‐donating to electron‐withdrawing enables the tuning of the solid‐state emission color from deep blue to red.

Quinoxalines represent bicyclic nitrogen‐containing heterocycles with a wide array of applications. They exhibit a multitude of biological activities relevant in medicinal chemistry as well as a plethora of luminescence properties. Quinoxaline syntheses exploit the whole raft of multicomponent syntheses from domino to sequential or consecutive reactions, harvesting well‐known synthetic concepts and reactions, such as Ugi‐reactions, but also leading to the development of novel reactions and sequences. Diversity‐oriented synthesis and transition metal catalyzed multicomponent reactions open efficient pathways to quinoxalines and quinoxaline‐containing moieties in a one‐pot fashion. This review outlines the underlying reaction‐based principles of multicomponent syntheses of quinoxalines and summarizes recent developments quinoxaline‐directed MCRs, illustrating their scopes.

N‐Benzyl‐aroyl‐S,N‐ketenacetale können durch die Kondensation von Aroylchloriden und N‐Benzyl‐2‐methylbenzothiazolium‐Salzen in guten bis ausgezeichneten Ausbeuten dargestellt werden, wodurch eine Substanzbibliothek bestehend aus 35 Chromophoren mit intensiver Festkörperemissions‐ und aggregationsinduzierten Emissions‐Eigenschaften aufgebaut werden konnte. Mittels Variation des Substituenten von elektronenschiebend bis elektronenziehend kann die Emissionsfarbe der Festkörperfluoreszenz gezielt von blau bis rot eingestellt werden.

Asymmetrically bridged aroyl-S,N-ketene acetals and aroyl-S,N-ketene acetal multichromophores can be readily synthesized in consecutive three-, four-, or five-component syntheses in good to excellent yields by several successive Suzuki-couplings of aroyl-S,N-ketene...

Consecutive four-component insertion–alkynylation–amination–Suzuki sequence furnishes bichromophores that emit white light upon aggregation-induced dual emission (AIDE) operating by partial energy transfer between the constituting chromophores.