Regioselective C−H Xanthylation as a Platform for Polyolefin Functionalization |
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| Authors: | Jill B. Williamson William L. Czaplyski Erik J. Alexanian Frank A. Leibfarth |
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| Affiliation: | Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA |
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| Abstract: | Polyolefins that contain polar functional groups are important materials for next‐generation lightweight engineering thermoplastics. Post‐polymerization modification is an ideal method for the incorporation of polar groups into branched polyolefins; however, it typically results in chain scission events, which have deleterious effects on polymer properties. Herein, we report a metal‐free method for radical‐mediated C?H xanthylation that results in the regioselective functionalization of branched polyolefins without coincident polymer‐chain scission. This method enables a tunable degree of polymer functionalization and capitalizes on the versatility of the xanthate functional group to unlock a wide variety of C?H transformations previously inaccessible on branched polyolefins. |
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| Keywords: | amidyl radicals C− H functionalization photochemistry polymer modification polymers |
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