Dinuclear catalysts for the ring opening polymerization of lactide

Catalytic metal-based systems for controlled statistical copolymerisation of lactide with a lactone

Diiminopyrrolide copper alkoxide complexes, LCuOR (OR(1)=N,N-dimethylamino ethoxide, OR(2)=2-pyridyl methoxide), are active for the polymerization of rac-lactide at ambient temperature in benzene to yield polymers with M(w)/M(n)=1.0-1.2. X-ray diffraction studies showed bridged dinuclear complexes in the solid state for both complexes. While LCuOR(1) provided only atactic polylactide, LCuOR(2) produced partially isotactic polylactide (P(m)=0.7). The difference in stereocontrol is attributed to a dinuclear active species for LCuOR(2) in contrast to a mononuclear species for LCuOR(1).

Isotactic rac‐Lactide Polymerization with Copper Complexes: The Influence of Complex Nuclearity

Traceless switch organocatalysis enables multiblock ring-opening copolymerizations of lactones, carbonates, and lactides: by a one plus one approach in one pot

Strategies for the synthesis of block copolymers with biodegradable polyester segments

Pseudo-first-order rate constants for the polymerization of rac-lactide with dimeric (nacnacBnCu(μ-OiPr))2 (nacnacBn = deprotonated N,N′-dibenzyl-2-amino-4-imino-pent-2-ene), 1, in acetonitrile, TH...

J J WhitehorneTodd

Papers

Lactide, β-butyrolactone, δ-valerolactone, and ε-caprolactone polymerization with copper diketiminate complexes