Ring‐Opening Metathesis Polymerization of Amino Acid‐Functionalized Norbornene Diamide Monomers: Polymerization Behavior and Chiral Recognition Ability of the Polymers

Abstract

Abstract Amino acid‐derived novel norbornene monomers were synthesized and polymerized with ruthenium catalysts. The polymerization rates were affected by the stereo structure of the monomers; exo,exo ‐NBL underwent ROMP faster to give the polymers in higher yields than the endo,exo ‐counterpart. The Grubbs 2nd generation catalyst was the most effective for the amino acid‐based monomers. A polymer gel was synthesized by the copolymerization of exo,exo ‐NBL with 2.5 mol‐% of bifunctional norbornene monomer. The gel adsorbed larger amounts of ( R )‐phenylalaninol and N ‐(benzyloxycarbonyl)alanine than those of the ( S )‐isomers. magnified image