mz5b00209_si_002.cif (37.39 kB)
Alkali-Metal Monophenolates with a Sandwich-Type Catalytic Center as Catalysts for Highly Isoselective Polymerization of rac-Lactide
dataset
posted on 2015-05-19, 00:00 authored by Zhongran Dai, Yangyang Sun, Jiao Xiong, Xiaobo Pan, Jincai WuHighly
isoselective ring-opening polymerization (ROP) of rac-lactide is a challenge for sodium and potassium complexes
under mild conditions. In this work, three sodium and potassium complexes
with a sandwich-type catalytic center are highly active catalysts
for the polymerization of rac-lactide and show high
isoselectivities with Pm values of 0.72–0.82. The best isoselectivity of Pm = 0.82 is the highest value for alkali-metal
complexes under mild conditions. The molecular weights of the obtained
PLA are close to the theoretical values, and the molecular weight
distributions are narrow.