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05:15
Solid-phase Synthesis of [4.4] Spirocyclic Oximes
Published on: February 6, 2019
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Synthesis and structures of three isoxazole-containing Schiff bases
Helen E Mason1, Judith A K Howard1, Hazel A Sparkes2
1Department of Chemistry, Durham University, South Road, Durham DH1 3LE, England.
Acta Crystallographica. Section C, Structural Chemistry
|September 5, 2020
Summary
Three novel isoxazole Schiff bases were synthesized and structurally characterized. These compounds exhibit UV-induced color changes, indicating potential applications in light-sensitive materials.
Area of Science:
- Organic Chemistry
- Supramolecular Chemistry
- Materials Science
Background:
- Schiff bases are versatile organic compounds with diverse applications.
- Isoxazole derivatives are known for their unique electronic and structural properties.
- Thermochromism and photochromism in organic molecules are areas of active research.
Purpose of the Study:
- To synthesize and characterize novel isoxazole-containing Schiff bases.
- To investigate the structural features, including hydrogen bonding and tautomeric forms.
- To explore the photophysical properties, specifically color changes upon UV irradiation.
Main Methods:
- Synthesis of three isoxazole Schiff bases.
- Single-crystal X-ray diffraction for structural determination.
- Spectroscopic analysis to confirm structure and study properties.
Main Results:
- Successful synthesis and structural elucidation of three isoxazole Schiff bases.
- Identification of intramolecular O-H...N hydrogen bonds and confirmation of enol tautomeric forms.
- Observation of visible color changes in all synthesized compounds upon UV light exposure, though not strongly thermochromic.
Conclusions:
- The synthesized isoxazole Schiff bases possess unique structural characteristics.
- The compounds demonstrate photochromic behavior upon UV irradiation.
- These findings contribute to the understanding of structure-property relationships in Schiff base derivatives.
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