Abstract
AbstractPalladium catalyzed aminoarylation reactions are widely used to create new C−N bonds. It has been proved that the method of synthesis of 1H‐pyrazolo[3,4‐b]quinoxaline derivatives (PQX), consisting of the reductive cyclization of the corresponding pyrazole derivative, is the most universal method of PQX synthesis among the known and is regiospecific. The obtained x‐chloro‐1‐methyl‐3‐phenyl‐1H‐pyrazolo[3,4‐b]quinoxaline isomers were starting materials for the synthesis of N,N‐diethylamine derivatives. The position differentiation of these substituents strongly impact the emissive properties of the final compounds.
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