Abstract
The epoxide ring in glycidyl butyrate (model compound) and in well-defined copolymers of glycidyl methacrylate (<40 mol %) and methyl methacrylate prepared by ATRP was efficiently opened with sodium azide in the presence of ammonium chloride in DMF at 50 °C. This click-type reaction led to the formation of the corresponding 1-hydroxy-2-azido compounds in high yields. The prepared azide-containing copolymers were functionalized in a second click reaction, the room temperature CuBr/N,N,N‘,N‘ ‘,N‘ ‘-pentamethyldiethylenetriamine-catalyzed 1,3-dipolar cycloaddition, of poly(ethylene oxide) methyl ether pentynoate to yield loosely grafted polymeric brushes with hydrophilic PEO side chains.
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