Anomeric Activation of Thioglycosides and Preparation of Deoxyglycosides Using Polymer-Bound Iodate(I) Complexes.
2003
Abstract New thiophilic polymer-bound haloate(I) complexes are presented which are well suited for the polymer-assisted solution-phase activation of 2-deoxythioglycosides. In the presence of alcohols 2-deoxyglycosides are obtained in yields between 60 and 95%. Isolation of the target glycosides is further simplified by removing the byproduct diphenyldisulfide by reductive work-up. Here also a polymer-bound reagent, namely borohydride exchange resin, served as a tool for sequestering the sulfur-containing impurities.
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