A series of buta-1,3-dienes have been directly synthesized via a convenient palladium-catalyzed
homodehydrogenation coupling reaction of aromatic alkenes under mild conditions. The
homocoupling reaction enables a rapid synthesis of multisubstituted butadiene which
shows typical aggregation-induced emission enhancement (AIEE) characteristics because
it is practically not emissive in solution but emits blue fluorescence in aggregates.
Key words
buta-1,3-dienes - dehydrogenative coupling - aggregation-induced emission - blue fluorescence