Abstract
Calix[4]arenes with both ligating and methoxy poly(ethylene glycol) groups appended have been synthesized using several approaches, involving the formation of sulfonyl ester groups on the wide rim, Schiff base derivatives on the narrow rim, and thioether groups on both the wide and narrow rims. These new derivatives have been characterized by a combination of infrared and 1H NMR spectroscopy. Compounds 10 and 11 are insoluble in both water and aqueous poly(ethylene glycol), but the other new compounds are soluble.
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Shen, J., Koch, H.F. & Roundhill, D.M. Synthesis and Characterization of Calix[4]arene Functionalized Poly(ethylene glycol) Derivatives. Journal of Inclusion Phenomena 38, 57–67 (2000). https://doi.org/10.1023/A:1008110906627
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DOI: https://doi.org/10.1023/A:1008110906627