Chemistry Proceedings (Nov 2022)

Rearrangement of Imidazolidine to Piperazine Rings in the Presence of Dy<sup>III</sup>

  • Julio Corredoira-Vázquez,
  • Paula Oreiro-Martínez,
  • Ana M. García Deibe,
  • Jesús Sanmartín-Matalobos,
  • Matilde Fondo

DOI
https://doi.org/10.3390/ecsoc-26-13547
Journal volume & issue
Vol. 12, no. 1
p. 30

Abstract

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The formation of imidazolidines from secondary amines and aldehydes is well known. This small cycle can act as a nitrogen donor, and it is usually stable when it coordinates to metal ions. Sometimes, imidazolidines acting as ligands undergo breaking of the C-N bond when coordinating to the metal center, yielding related amines. However, the reorganization of the imidazolidine into a piperazine ring is quite an unusual process. In this work, we describe the transformation of a zinc complex with a ligand containing two imidazolidine moieties into a zinc complex with a piperazine fragment as donor, in the presence of a dysprosium salt.

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