Improved Method for the Obtaining DTTA-appended 2,2'-bipyridine Ligands for Lanthanide Cations

Improved Method for the Obtaining DTTA-appended 2,2'-bipyridine Ligands for Lanthanide Cations / D. S. Kopchuk, A. P. Krinochkin, M. I. Valieva [et al.] // Chimica Techno Acta. – 2022. – Vol. 9, N 2. – P. 20229210.

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2022

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Аннотация

The composition of the reaction mixture after DTTA tert-butyl ester alkylation with 6'-halomethyl-5-phenyl-2,2'-bipyridines was studied. In addition to the target product, DTTA-appended 2,2’-bipyridine, the corresponding 6'-hydroxymethyl-substituted 2,2’-bipyridine and (5'-phenyl-[2,2'-bipyridin]-6-yl)methyl formate were isolated as byproducts in some cases. Finally, an improved procedure for the DTTA tert-butyl ester alkylation with 6'-halomethyl-5-phenyl-2,2'-bipyridines by using Finkelstein reaction was developed.