Abstract
A new family of copolymers based on styrene and a polymerizable cinchonidine thioamide derivative was synthesized by conventional radical polymerization. The copolymers were tested as homogeneous supported organocatalysts in the enantioselective decarboxylative protonation (EDP) of α-aminomalonate hemiesters giving access to α-amino acids under very mild conditions. These macromolecular catalysts could be prepared on a large scale and outperformed their unsupported analogues providing the desired products in high yield and enantioselectivity. Furthermore, recycling experiments were conducted which showed good enantioselectivities.
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