Chimica Techno Acta (May 2022)

Improved method for the obtaining DTTA-appended 2,2’-bipyridine ligands for lanthanide cations

  • Dmitry S. Kopchuk,
  • Alexey P. Krinochkin,
  • Мaria I. Valieva,
  • Еkaterina S. Starnovskaya,
  • Yaroslav K. Shtaitz,
  • Svetlana S. Rybakova,
  • Evgeny D. Ladin,
  • Ekaterina A. Kudryashova,
  • Elvira R. Sharafieva,
  • Оleg N. Chupakhin

DOI
https://doi.org/10.15826/chimtech.2022.9.2.10
Journal volume & issue
Vol. 9, no. 2

Abstract

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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 by-products 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.

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