Palladium-Catalyzed Synthesis of Substituted Pyrido[2,3-d]pyridazines at Positions 5 and 8

Abstract

Several synthetic strategies were developed for the preparation of highly substituted pyrido[2,3-d]pyridazines. We particularly focused on the impact of the pyridine nitrogen atom on pyridazine ring reactivity toward aromatic substitutions, alkylations, or pallado-catalyzed cross-coupling reactions.

Key words

palladium - heterocycles - catalysis - cross-coupling

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