Multicomponent strategies for the diversity-oriented synthesis of blue emissive heterocyclic chromophores

Consecutive multicomponent syntheses of blue-emissive five- and six-membered heterocycles can be efficiently achieved by alkynylation-cyclocondensation, alkynylation-cyclization, and by alkynylationcycloisomerization sequences starting from simple ar(o)yl halides, alkynes, and bifunctional nucleophiles. The diversity-oriented nature of this approach enables the introduction of numerous substituents and thereby the electronic fine-tuning of the target luminophores.