Fullerene bisadduct regioisomers containing an asymmetric diamide tether
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Four macrocyclic bis(pyrrolidino)fullerene regioisomers with e-edge, e-face, trans-4 and cis-2 addition patterns were synthesized from the corresponding monoadduct by Prato's cycloaddition in a yield of 50%, and fully characterized by spectroscopic techniques. Bisadduct regioisomers were isolated easily in a pure form using dry-flash column chromatography. The relative ratio of the isolated regioisomers e-edge/e-face/trans-41cis-2 was 1.0:1.9:1.5:4.9. Morphology of self-assembled structures of the four bisadduct regioisomers in solution was characterized using scanning electron microscopy.
Keywords:
bis(pyrrolidino)fullerene regioisomers / Prato's cycloaddition / Hexamethylene-Gly-Gaba diamide tether / NMR analysis / Self-orderingSource:
Tetrahedron, 2017, 73, 50, 7073-7078Publisher:
- Pergamon-Elsevier Science Ltd, Oxford
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Note:
- This is peer-reviewed version f the article: Kop TJ, Đorđević J, Bjelaković MS, Milić D, Fullerene bisadduct regioisomers containing an asymmetric diamide tether, Tetrahedron, 2017, 73, 50, 7073-7078, doi: dx.doi.org/10.1016/j.tet.2017.10.069
- http://cer.ihtm.bg.ac.rs/handle/123456789/2124
DOI: 10.1016/j.tet.2017.10.069
ISSN: 0040-4020