Optically active helical vinylbiphenyl polymers with reversible thermally induced stereomutation

Abstract

A series of novel chiral vinylbiphenyl monomers, (+)-2-[(<italic>S</italic>)-alkoxycarbonyl]-5-(4′-hexyloxyphenyl)styrene (<bold>S-(+)-I-Mm</bold>, <italic>m</italic> = 0, 1, 2, 3)/(−)-2-[(<italic>R</italic>)-<italic>sec</italic>-butyloxycarbonyl]-5-(4′-hexyloxyphenyl)styrene (<bold>R-(−)-I-M0</bold>), were designed and synthesized to search for new building blocks of optically active helical polymers.