Cobalt(II) complexes supported by iminomethylpyridine derived ligands: Synthesis, characterization and catalytic application towards methyl methacrylate and rac-lactide polymerisations was written by Lee, Jaegyeong;Kim, Kyeonghun;Lee, Hyosun;Nayab, Saira. And the article was included in Polyhedron in 2021.Safety of 2-Methoxyethylamine The following contents are mentioned in the article:
A series of cobalt(II) complexes, [LnCoCl2] (Ln = L-A – L-F), supported by iminomethylpyridine derivatives were synthesized. The crystal structures of [L-ACoCl2], [L-DCoCl2] and [L-ECoCl2] were identified by X-ray diffraction studies and they showed five-coordinated distorted square pyramidal geometries. All the complexes synthesized were evaluated as potential mediators for the coordination polymerization of Me methacrylate (MMA), in the presence of modified methylaluminoxane (MMAO). The Co(II) complex with the ligand (E)-N’,N’-dimethyl-N3-(pyridin-2-ylmethylene)propane-1,3-diamine displayed the highest catalytic activity (4.48 x 104 g PMMA / mol Co h) for MMA polymerization Regardless of the ligand architecture, syndio-enriched poly(Me methacrylate) (PMMAs) with high mol. weights (11.1 x 105 g/mol) were furnished. Addnl., the in situ generated di-Me Co(II) complexes polymerized racemic-lactide (rac-LA), yielding hetero-enriched polylactide (PLA). Importantly, the stereoselectivities of the Co(II) complexes towards PLA were found to be influenced by the steric and electronic properties of the amine substituents. This study involved multiple reactions and reactants, such as 2-Methoxyethylamine (cas: 109-85-3Safety of 2-Methoxyethylamine).
2-Methoxyethylamine (cas: 109-85-3) belongs to ethers. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Safety of 2-Methoxyethylamine
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem