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Synthesis of [2+2] Schiff base macrocycles by a solvent templating strategy and halogen bonding directed assembly

Citation

Taylor, CM and Kilah, NL, Synthesis of [2+2] Schiff base macrocycles by a solvent templating strategy and halogen bonding directed assembly, Journal of Inclusion Phenomena and Macrocyclic Chemistry, 102 pp. 543-555. ISSN 1388-3127 (2022) [Refereed Article]


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Copyright Statement

The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0), License (https://creativecommons.org/licenses/by/4.0/), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.

DOI: doi:10.1007/s10847-022-01137-2

Abstract

Schiff base imine condensations are a useful tool for macrocycle synthesis and applications within supramolecular chemistry. Here we address the mixtures of products that can arise from template free synthesis using dicarbonylheterocycles and diamines, and look to develop metal-free template methods for selective macrocycle formation. A range of alkyl α,ω-diamines were combined with phenanthroline and pyridine heterocyclic dicarbaldehydes under standard literature conditions. The reaction conditions were modified to demonstrate a relationship between choice of solvent and product equilibria. It was observed that benzene and toluene could shift a mixture of products and unreacted starting materials to form predominantly one imine product for a number of systems. Once the macrocyclic products had been characterized in selected solvents, iodinated halogen bonding guest molecules were added to direct macrocycle assemblies using non-covalent interactions. Studies to investigate host guest suitability and halogen bond interactions were conducted, and it was found that tetraiodoethylene had an influence on the formation of a phenanthroline based macrocycle. Proof of concept experiments were performed to show the influence of the guest molecule, tetraiodoethylene, on the macrocyclic products formed under competitive dynamic combinatorial chemistry conditions.

Item Details

Item Type:Refereed Article
Keywords:Schiff base, halogen bond, host guest, solvent control, templation
Research Division:Chemical Sciences
Research Group:Macromolecular and materials chemistry
Research Field:Supramolecular chemistry
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the chemical sciences
UTAS Author:Taylor, CM (Miss Chloe Taylor)
UTAS Author:Kilah, NL (Dr Nathan Kilah)
ID Code:155366
Year Published:2022
Funding Support:Australian Research Council (DE150100263)
Web of Science® Times Cited:1
Deposited By:Chemistry
Deposited On:2023-02-16
Last Modified:2023-03-16
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