Comparative study on post‐polymerization modification of C1 poly(benzyl 2‐ylidene‐acetate) and its C2 analog poly(benzyl acrylate). Issue 5 (25th September 2015) - Krappitz, Tim
ABSTRACT: The present study investigates the challenging approach of post‐polymerization modification on polymers with a sterically demanding reaction center. Therefore, the general possibility to functionalize polymethylene moieties was investigated. Poly(benzyl 2‐ylidene‐acetate) was synthesized by polymerization of benzyl 2‐diazoacetate utilizing [( L ‐prolinate)Rh I (1, 5‐dimethyl‐1, 5‐cyclooctadiene)] as a catalyst. Subsequently, the modification of C1 polymerized poly(benzyl 2‐ylidene‐acetate) with amines was analyzed and the obtained data set was compared with experimental data derived for the C2 analog poly(benzyl acrylate). This is the first study on post‐polymerization modification utilizing densely functionalized polymethylenes as starting materials. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem.2016, 54, 686–691 Abstract : Post‐polymerization modification of C1 polymers, obtained from polymerization of carbene precursors, and C2 polymers, obtained from classic radical polymerization of functional acrylates, result in different products during amidation reactions. This was tested for bulk reaction of non‐activated ester polymers with amines.