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Large-Scale Screens of Metagenomic Libraries
Published on: May 28, 2007
Facile access to monodisperse ultralarge rings
Muhammad Raza Shah1, Stefan Duda, Beate Müller
1Max-Planck-Institut für Polymerforschung, Ackermannweg 10, D-55128 Mainz, Germany.
Journal of the American Chemical Society
|May 2, 2003
Summary
Researchers developed a straightforward method to synthesize ultralarge monodisperse rings with 126, 174, and 294 atoms. This approach utilizes a carbonate covalent template, offering a novel route to macrocyclic compounds.
Area of Science:
- Macromolecular Chemistry
- Supramolecular Chemistry
- Organic Synthesis
Background:
- Synthesizing large monocyclic compounds presents significant challenges.
- Existing methods for [2]catenanes are not directly applicable to ultralarge rings.
- Covalent templating is a powerful strategy for macrocycle formation.
Purpose of the Study:
- To develop a facile and efficient method for accessing ultralarge monodisperse rings.
- To adapt known [2]catenane synthesis strategies for macrocycle preparation.
- To utilize a carbonate intermediate as a covalent template.
Main Methods:
- A modified reaction sequence involving cyclization and carbonate formation.
- Employing a carbonate covalent template that is readily formed and cleaved.
- Characterization of the resulting monocyclic products.
Main Results:
- Successful synthesis of monodisperse ultralarge rings with 126, 174, and 294 ring atoms.
- The carbonate intermediate served effectively as a covalent template.
- The synthesized macrocycles are constitutional isomers of corresponding catenanes.
Conclusions:
- A versatile and accessible synthetic route to ultralarge monodisperse rings has been established.
- The carbonate templating strategy is effective for constructing complex macrocyclic architectures.
- This method provides access to novel constitutional isomers of catenanes.
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