Asymmetric terpolymerization of styrene or its derivative and aliphatic 1-alkenes with CO catalyzed by Pd–(R,S)-BINAPHOS

Asymmetric terpolymerization of aliphatic 1-alkenes, vinylarenes and carbon monoxide has been studied using Pd–(R,S)-BINAPHOS complex as a catalyst. The glass transition temperature is changeable and dependent on the content of each olefin unit. The terpolymers synthesized by Pd-(R,S)-BINAPHOS system consist of higher 1-alkene content, the fact being in sharp contrast to the results with Pd–nitrogen ligand systems. The incorporation degree of [4-tert-butylstyrene–CO] unit in the terpolymer was much lower than that of [1-alkenes–CO] although the insertion of 4-tert-butylstyrene into acetylPd was faster than 1-alkenes.