Synthesis and polymerization of optically active L ‐[α‐(N‐p‐acryloxybenzoyl)alanine ethyl esters]

New optically active monomers L‐[α‐(N‐p‐acryloxybenzoyl)alanine ethyl esters] (I) and their polymers were synthesized. The title monomers (I) were prepared by the reaction of 1‐p‐acryloxybenzoyloxy‐4‐chlorobenzotriazoles (II) with L‐alanine ethyl ester hydrochloride, by aminolysis of the active monoester. The new typical active ester (II) was synthesized by the N‐hydroxy compound active‐ester methods in excellent yield. Before the synthesis of the optically active monomers was carried out, a model study of the aminolysis of the two active esters was performed.