<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The cyclization of chloride (IIIc), obtained via radical mediated C‐H functionalization of 3, 6‐dichloropyridazine, with various amines (IV) leads to a series of tetrahydropyridopyridazines (V) in 36‐62% yields.</p> </abstract>