Binuclear ketodiiminate magnesium complexes for the ROP of cyclic -Lactide and ε-Caprolactone

Homoleptic and heteroleptic ketodiiminate zinc complexes for the ROP of cyclic l-lactide

“…The introduction of a Cp*Zn moiety to ketodiiminate complexes yields lower molecular weight polymers. 42,46…”

“…The introduction of a Cp*Zn moiety to ketodiiminate complexes yields lower molecular weight polymers. 42,46 Kinetic studies Kinetic studies with complexes 2 and 3 were performed in toluene at 100 °C with monomer-to-metal ratios [LA] 0 /[Zn] 0 of 200 : 1 in a J-Young NMR tube. The ln{[M] 0 /[M] t } ratio was calculated by integration of the Me proton peaks in the 1 H NMR spectra from the polymer and the monomer (Fig.…”

“…MALDI-ToF mass spectra were recorded with a Bruker UltraeXtreme MALDI-ToF Scheme 2 Catalytically active mono-and bimetalic catalysts I, II and III. 36,37,42 mass spectrometer (Bruker Daltonik). The polymers were dissolved in THF (10 mg mL −1 ) using dihydroxy benzoic acid as the matrix in THF (20 mg mL −1 ).…”

“…Recently, our group reported the synthesis of binuclear magnesium complexes and their capability for the synthesis of cPLA and cPCL with high TOF values up to 712 800 h −1 under mild reaction conditions. 42 We herein report the synthesis of mono- and homodinuclear zinc ketodiiminate complexes and their catalytic activity for the synthesis of cPLA.…”

Trendbericht: Makromolekulare Chemie 2023

“…15) Schulz und Mitarbeitende präsentierten hingegen neue Mgbasierte Katalysatoren für die Ringöffnungspolymerisation von L-Lactid sowie ε-Caprolacton. 16) Mecking und Schunk gelang es sogar, Monomerbausteine für die Metathesepolymerisation aus Fettsäuren in lebenden Algen herzustellen. 17) Nachhaltig ist es auch, aus industriellen Abfällen neue Materialien herzustellen.…”