Abstract
The synthesis of 3-mono-O-hydroxyethyl cellulose using orthogonal protecting groups was realized. The reaction of 2,6-di-O-thexyldimethylsilyl cellulose with 2-(2-bromoethoxy)tetrahydropyran leads to a completely functionalized cellulose derivative. The complete removal of the protecting groups was possible by split off of the TDMS functions with tetrabutylammonium fluoride trihydrate and subsequently the tetrahydropyran moieties with hydrochloric acid. The structure of 3-mono-O-hydroxyethyl cellulose was confirmed by applying one and two-dimensional NMR spectroscopy. The novel polymer is soluble in water and does not show thermoreversible gelation.
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Acknowledgments
We are indebted to Dr. W. Günther for conducting the NMR experiments. The authors thank the Fachagentur Nachwachsende Rohstoffe (FNR)/BMVEL (project. no. 22003504 04NR035) for generous financial support. D. Fenn wishes to thank Dr. K. Petzold-Welcke and Dr. A. Koschella for helpful discussions regarding the synthesis.
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Fenn, D., Heinze, T. Novel 3-mono-O-hydroxyethyl cellulose: synthesis and structure characterization. Cellulose 16, 853–861 (2009). https://doi.org/10.1007/s10570-009-9297-x
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DOI: https://doi.org/10.1007/s10570-009-9297-x