Sugars with a new functional group: Hydroxythio(thiocarbonate

Add time:08/15/2019    Source:sciencedirect.com

The preparation and some properties are described of two sugar derivatives containing a new functional group, namely hydroxythio(thiocarbonate) [ROC(=S)-SOH]. These derivatives were prepared by reaction of hydrogen peroxide with the O-(sodium thiolthiocarbonyl) derivative of 1,2:3,4-di-O-isopropylidene-α-D-galactopyranose (1) and 1,2:5,6-di-O-isopropylidene-α-D-glucofuranose (7). These derivatives are acidic enough to be titrated with alkali and, in presence of hydrogen peroxide, are able to initiate graft polymerization of acrylamide. The nature of the linkage between the sugars and polyacrylamide is (in part) a thioester type.

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