R. Hoogenboom, G. Kickelbick, U. Schubert:
"Synthesis and Characterization of Novel Substituted 3,6-Di(2-pyridyl)pyridazine Metal-Coordinating Ligands";
European Journal of Organic Chemistry, (2003), S. 4887 - 4896.

Kurzfassung englisch:
The synthesis of novel functionalized 3,6-di(2-pyridyl)pyridazines via an inverse electron demand Diels-Alder reaction between the corresponding 3,6-di(2-pyridyl)-1,2,4,5-tetrazine and various alkynes is reported. The resulting 3,6-di(2-pyridyl)pyridazines were investigated using X-ray crystallography, IR spectroscopy, and NMR spectroscopy, whereby several 2D NMR spectroscopic techniques were exploited to conclusively assign all proton- and carbon-resonances. In addition, it was demonstrated that the functionalized 3,6-di(2-pyridyl)pyridazines are capable of forming [2 ◊ 2] grid-like metal complexes with copper(I) and silver(I) ions.

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