Alkynylation of cyclopropyl trifluoromethyl ketone catalyzed by CuF 2 ·2H 2 O/4,7-diphenyl-1,10-phenanthroline

Bimetallic copper and zinc-catalyzed oxidative cycloaddition of 3-aminopyridazines and nitriles: a direct synthesis of 1,2,4-triazolo[1,5-b]pyridazines via C–N and N–N bond-forming process

One-pot formation of 1,2,4-triazolo[1,5-b]pyridazine derivatives is presented in this manuscript, in which the targets are offered via cooperative Cu(i)/Zn(ii)-catalyzed tandem C–N addition and I₂/KI-mediated intramolecular N–N bond formation.